Elastic Load Balance
Elastic Load Balance
Todos los resultados de "
" dentro de este producto
Todos los resultados de "
" dentro de este producto
Descripción general del servicio
Qué es ELB
Ventajas del producto
Cómo funciona ELB
Escenarios de la aplicación
Differences Between Dedicated and Shared Load Balancers
Tipos de productos de ELB
Detalles de comparación de características
Equilibrio de carga en una red pública o privada
Rutas de tráfico de red
Especificaciones de los balanceadores de carga dedicados
Facturación (balanceadores de carga compartidos)
Permisos
Conceptos de producto
Conceptos básicos
Región y AZ
Cómo funciona ELB con otros servicios
Pasos iniciales
Descripción general
Preparaciones para el uso de ELB
Uso de balanceadores de carga compartidos (nivel de entrada)
Uso de balanceadores de carga compartidos (nivel avanzado)
Guía del usuario
Balanceador de carga
Descripción general
Preparativos para crear un balanceador de carga
Creación de un balanceador de carga dedicado
Creación de un balanceador de carga compartido
Habilitación del rendimiento garantizado para un balanceador de carga compartido
Configuración de la protección de modificación para balanceadores de carga
Modificación del ancho de banda
Cambio de las especificaciones de un balanceador de carga dedicado
Cambio del modo de facturación o de la opción de facturación de ancho de banda
Cambio de una dirección IP
Vinculación de una dirección IP a o desvinculación de una dirección IP de un balanceador de carga
Adición o extracción de un ancho de banda compartido IPv6
Exportación de la lista de balanceadores de carga
Eliminación de un balanceador de carga
Oyente
Descripción general
Protocolos y puertos
Adición de un oyente de TCP
Adición de un oyente de UDP
Adición de un oyente de HTTP
Adición de un oyente de HTTPS
Adición de un oyente UDP (con un grupo de servidores Backend QUIC asociado)
Configuración de la protección de modificación para un oyente
Configuración de duraciones de tiempo de espera
Modificación o eliminación de un oyente
Dirección IP del cliente de transferencia (balanceadores de carga dedicados)
Transferir la dirección IP del cliente (balanceadores de carga compartidos)
Características avanzadas de los oyentes de HTTP/HTTPS
Política de reenvío (balanceadores de carga compartidos)
Política de reenvío (balanceadores de carga dedicados)
Reenvío avanzado (balanceadores de carga dedicados)
Reenvío avanzado
Gestión de una política de reenvío avanzado
Autenticación mutua
HTTP/2
Redirección de HTTP a HTTPS
Transferencia del EIP del balanceador de carga a los servidores backend
Política de seguridad de TLS
Certificado de SNI (para oyentes de HTTPS)
Grupo de servidores backend
Descripción general
Características principales
Comprobación de estado
Algoritmos de balanceo de carga
Sesión adhesiva
Modo de reenvío (balanceadores de carga dedicados)
Inicio lento (balanceadores de carga dedicados)
Creación de un grupo de servidores backend (balanceadores de carga dedicados)
Creación de un grupo de servidores backend (balanceadores de carga compartidos)
Modificación de un grupo de servidores backend
Descripción general
Modificación de la configuración de comprobación de estado
Cambio del algoritmo de balanceo de carga
Modificación de la configuración de sesión adhesiva
Modificación de la configuración de inicio lento (balanceadores de carga dedicados)
Cambio de un grupo de servidores backend
Consulta de un grupo de servidores backend
Eliminación de un grupo de servidores backend
Servidor backend (balanceador de carga dedicado)
Descripción general
Reglas de grupos de seguridad
Gestión de servidores backend
Adición de servidores backend
Consulta de servidores backend
Extracción de servidores backend
Cambio de las ponderaciones/puertos del servidor backend
Direcciones IP como servidores backend
Descripción general
Habilitación de IP as a Backend
Adición de direcciones IP como servidores backend
Consulta de servidores backend
Extracción de servidores backend
Cambio de las ponderaciones/puertos del servidor backend
Interfaces de red suplementarias
Adición de interfaces de red suplementarias
Consulta de interfaces de red suplementarias.
Extracción de interfaces de red suplementarias
Cambio de las ponderaciones/puertos de las interfaces de red suplementarias
Servidor Backend (balanceadores de carga compartidos)
Descripción general
Reglas de grupos de seguridad
Gestión de servidores backend
Adición de servidores backend
Consulta de servidores backend
Extracción de servidores backend
Cambio de las ponderaciones del servidor backend
Certificado
Introducción a los certificados
Certificado y formato de clave privada
Conversión de formatos de certificado
Adición de un certificado
Eliminación de un certificado
Vinculación de un oyente y sustitución del certificado enlazado a un oyente
Reemplazar el certificado vinculado a diferentes oyentes
Consulta de oyentes por certificado
Control de acceso
Control de acceso
Gestión de grupos de direcciones IP
Creación de un grupo de direcciones IP
Consulta de los detalles de un grupo de direcciones IP
Gestión de direcciones IP en un grupo de direcciones IP
Eliminación de un grupo de direcciones IP
Etiqueta
Registro de acceso
Protección para las operaciones de misión críticas
Monitoreo
Métricas de monitoreo
Configuración de una regla de alarmas
Creación de una regla de alarma
Modificación de una regla de alarma
Consulta de Métricas
Auditoría
Operaciones de clave registradas por CTS
Consulta de trazas
Cuotas
Apéndice
Configuración del módulo TOA
Referencia de la API
Antes de comenzar
Descripción general
Invocación de la API
Endpoint
Notas y restricciones
Conceptos
Selección de una versión de API
Consulta de datos en páginas
Descripción de la API
Llamada a APIs
Hacer una solicitud de API
Autenticación
Respuesta
API del balanceador de carga dedicado
Versión de la API
Consulta de versiones de API
Cuota
Consulta de cuotas
Consulta de uso de cuotas
Zona de disponibilidad
Consulta de AZ
Variante de Equilibrador de Carga
Consulta de variantes
Consulta de detalles de una variante
Balanceador de carga
Creación de un balanceador de carga
Consulta de balanceadores de carga
Viewing Details of a Load Balancer
Actualización de un balanceador de carga
Eliminación de un balanceador de carga
Consulta del árbol de estado de un equilibrador de carga
Certificado
Creación de un certificado
Consulta de certificados
Consulta de detalles de un certificado
Actualización de un certificado
Supresión de un certificado
Política de seguridad
Creación de una política de seguridad personalizada
Consulta de políticas de seguridad personalizadas
Consulta de detalles de una política de seguridad personalizada
Actualización de una política de seguridad personalizada
Eliminación de una política de seguridad personalizada
Consulta de políticas de seguridad del sistema
Grupo de direcciones IP
Creación de un grupo de direcciones IP
Consulta de grupos de direcciones IP
Consulta de detalles de un grupo de direcciones IP
Actualización de un grupo de direcciones IP
Eliminación de un grupo de direcciones IP
Actualización de direcciones IP en un grupo de direcciones IP
Eliminación de direcciones IP de un grupo de direcciones IP
Oyente
Adición de un oyente
Consulta de oyentes
Consulta de detalles de un listener
Actualización de un oyente
Eliminación de un oyente
Grupo de servidores de backend
Creación de un grupo de servidores backend
Consulta de grupos de servidores backend
Consulta de detalles de un grupo de servidores backend
Actualización de un grupo de servidores backend
Eliminación de un grupo de servidores backend
Servidor de backend
Adición de un servidor backend
Consulta de servidores backend
Ver detalles de un servidor backend
Actualización de un servidor backend
Eliminación de servidores backend
Comprobación de estado
Configuración de una comprobación de estado
Consulta de comprobaciones de estado
Consulta de detalles de una comprobación de estado
Actualización de una comprobación de estado
Eliminación de una comprobación de estado
Política de reenvío
Adición de una política de reenvío
Consulta de políticas de reenvío
Consulta de detalles de una política de reenvío
Actualización de una política de reenvío
Eliminación de una política de reenvío
Regla de reenvío
Adición de una regla de reenvío
Consulta de reglas de reenvío
Consulta de detalles de una regla de reenvío
Actualización de una regla de reenvío
Supresión de una regla de reenvío
API de Balanceador de carga compartido
Balanceador de carga
Creación de un balanceador de carga
Consulta de los balanceadores de carga
Consulta de detalles de un balanceador de carga
Consulta del árbol de estado de un balanceador de carga
Actualización de un balanceador de carga
Supresión de un balanceador de carga
Oyente
Adición de un oyente
Consulta de detalles de un oyente
Consulta de oyentes
Actualización de un oyente
Eliminación de un oyente
Grupo de servidores de backend
Adición de un grupo de servidores de backend
Consulta de grupos de servidores backend
Consulta de detalles de un grupo de servidores backend
Actualización de un grupo de servidores backend
Eliminación de un grupo de servidores backend
Servidor de backend
Adición de un servidor backend
Consulta de servidores backend
Consulta de detalles de un servidor backend
Actualización de un servidor backend
Eliminación de un servidor backend
Comprobación de estado
Configuración de una comprobación de estado
Consulta de comprobaciones de estado
Consulta de detalles de comprobación de estado
Actualización de un chequeo de estado
Eliminación de una comprobación de estado
Política de reenvío
Adición de una política de reenvío
Consulta de políticas de reenvío
Consulta de detalles de una política de reenvío
Actualización de una política de reenvío
Eliminación de una política de reenvío
Regla de reenvío
Adición de una regla de reenvío
Consulta de reglas de reenvío
Consulta de detalles de una regla de reenvío
Actualización de una regla de reenvío
Supresión de una regla de reenvío
Lista de confianza
Adición de una lista blanca
Consulta de detalles de una lista blanca
Consulta de listas blancas
Actualización de una lista blanca
Eliminación de una lista blanca
Certificado
Creación de un certificado
Consulta de certificados
Consulta de detalles de un certificado
Actualización de un certificado
Supresión de un certificado
API (API de OpenStack)
Etiqueta
Adición de una etiqueta a un balanceador de carga
Adición o eliminación de etiquetas de balanceador de carga por lotes
Consulta de todas las etiquetas de un balanceador de carga
Consulta de las etiquetas de todos los balanceadores de carga
Consulta de balanceadores de carga por etiqueta
Eliminación de una etiqueta de un balanceador de carga
Adición de una etiqueta a un oyente
Adición o eliminación de etiquetas de oyente por lotes
Consulta de todas las etiquetas de un oyente
Consulta de las etiquetas de todos los oyentes
Consulta de oyentes por etiqueta
Eliminación de una etiqueta de un oyente
Códigos de estado
Ejemplos
Creación de un balanceador de carga dedicado y vinculación de un nuevo EIP a él
Adición de un oyente a un balanceador de carga dedicado
Eliminación de un balanceador de carga dedicado
Creación de un balanceador de carga de red pública (compartido)
Consultar el ID de un ECS utilizado como servidor backend
Políticas de permisos y acciones admitidas
Introducción
Acciones admitidas
Balanceador de carga
Oyente
Grupo de servidores de backend
Servidor de backend
Comprobación de estado
Política de reenvío
Regla de reenvío
Whitelist
SSL Certificate
Cuota
Etiqueta
Precauciones para los permisos de API
Apéndice
Códigos de error
Códigos de estado
Métricas de monitoreo
Información general sobre los balanceadores de carga compartidos
Consulta de datos en páginas
Resultados de la consulta de secuenciación
Flujo de trabajo básico
Obtención de un ID de proyecto
API históricas
API de balanceador de carga mejorado compartido (OpenStack)
Balanceador de carga
Creación de un balanceador de carga
Consulta de los balanceadores de carga
Consulta de detalles de un balanceador de carga
Consulta del árbol de estado de un balanceador de carga
Actualización de un balanceador de carga
Supresión de un balanceador de carga
Oyente
Adición de un oyente
Consulta de oyentes
Consulta de detalles de un oyente
Actualización de un oyente
Eliminación de un oyente
Grupo de servidores de backend
Adición de un grupo de servidores de backend
Consulta de grupos de servidores backend
Consulta de detalles de un grupo de servidores backend
Actualización de un grupo de servidores backend
Eliminación de un grupo de servidores backend
Servidor de backend
Adición de un servidor backend
Consulta de servidores backend
Consulta de detalles de un servidor backend
Actualización de un servidor backend
Eliminación de un servidor backend
Comprobación de estado
Configuring a Health Check
Querying Health Checks
Querying Details of a Health Check
Updating a Health Check
Eliminación de una comprobación de estado
Política de reenvío
Adición de una política de reenvío
Consulta de directivas de reenvío
Consulta de detalles de una directiva de reenvío
Actualización de una política de reenvío
Eliminación de una política de reenvío
Regla de reenvío
Adición de una regla de reenvío
Consulta de reglas de reenvío
Consulta de detalles de una regla de reenvío
Actualización de una regla de reenvío
Supresión de una regla de reenvío
Lista de confianza
Adición de una lista blanca
Consulta de listas blancas
Consulta de detalles de una lista blanca
Actualización de una lista blanca
Eliminación de una lista blanca
Certificado
Creación de un certificado
Consulta de certificados
Consulta de detalles de un certificado
Actualización de un certificado
Supresión de un certificado
Consulta de Trabajo Asincrónico
Consulta de versiones
Pasos iniciales
Creación de un balanceador de carga
Obtención de un Token
Creación de un balanceador de carga
Creación de un balanceador de carga de red pública
Adición de un oyente
Creación de un grupo de servidores backend
Incorporación de servidores de backend
Configuración de una comprobación de estado
Adición de una política de reenvío
Adición de una regla de reenvío
Adición de una lista blanca
Creación de un certificado SSL
Preguntas frecuentes
Preguntas populares
Anormalidad del servicio
¿Por qué no puedo acceder a mis servidores backend con un balanceador de carga?
¿Qué puedo hacer si no se puede acceder a ELB o se interrumpe el enrutamiento de tráfico?
¿Cómo puedo manejar los códigos de error?
Funcionalidad de ELB
¿Se puede usar ELB por separado?
¿ELB admite las conexiones persistentes?
¿ELB admite FTP en servidores backend?
¿Puede ELB bloquear ataques de DDoS y proteger el código web?
¿Se asigna una EIP exclusivamente a un balanceador de carga?
¿Cuántos balanceadores de carga y oyentes puedo tener?
¿Qué tipos de API proporciona ELB? ¿Qué son los permisos de ELB?
¿Puedo ajustar el número de servidores backend cuando se está ejecutando un balanceador de carga?
¿Pueden los servidores backend ejecutar diferentes sistemas operativos?
¿Puedo configurar diferentes puertos backend para un balanceador de carga?
¿Se puede usar ELB en todas las cuentas o VPC?
¿Pueden los servidores backend acceder a los puertos de un balanceador de carga?
¿Puedo vincular una dirección IP pública comprada de un proveedor de nube de terceros a mi balanceador de carga?
¿Pueden tanto el oyente como el grupo de servidores de backend usar HTTPS?
¿Puedo cambiar la VPC y la subred de mi balanceador de carga?
¿Puedo actualizar un balanceador de carga compartido a un balanceador de carga dedicado sin interrumpir el enrutamiento del tráfico?
¿ELB admite redes IPv6?
Rendimiento de equilibrio de carga
¿Cómo puedo determinar el tiempo de respuesta del servidor basado en los datos y logs de supervisión?
¿Cómo puedo comprobar si hay incoherencias de tráfico?
¿Cómo puedo verificar si el tráfico está siendo distribuido uniformemente?
¿Cómo puedo comprobar si hay un retraso excesivo en el acceso?
¿Qué hago si un balanceador de carga falla una prueba de esfuerzo?
Balanceadores de carga
¿Qué es la cuota?
¿Cómo distribuye ELB el tráfico?
¿Cómo puedo acceder a un balanceador de carga en todas las VPC?
¿Cómo puedo configurar el equilibrio de carga para aplicaciones en contenedores?
¿Necesito configurar el ancho de banda de EIP para mis balanceadores de carga?
¿Puedo vincular varias EIP a un balanceador de carga?
¿Por qué se requieren varias direcciones IP al crear o habilitar un balanceador de carga dedicado?
¿Por qué las solicitudes de la misma dirección IP se enrutan a diferentes servidores backend cuando el algoritmo de equilibrio de carga es hash de IP de origen?
¿Pueden los servidores backend acceder a Internet con la EIP del balanceador de carga?
¿Los balanceadores de carga compartidos tienen especificaciones?
¿Se interrumpirá el enrutamiento de tráfico si se cambia el algoritmo de equilibrio de carga?
¿Cuál es la diferencia entre el ancho de banda incluido en cada especificación de un balanceador de carga dedicado y el ancho de banda de una EIP?
¿Cómo puedo combinar ELB y WAF?
Oyentes
¿Cuáles son las relaciones entre los algoritmos de equilibrio de carga y los tipos de sesión adhesiva?
¿Puedo vincular varios certificados a un oyente?
¿ELB dejará de distribuir el tráfico inmediatamente después de que se elimine un oyente?
¿Tiene ELB restricciones en la velocidad y el tamaño de carga de archivos?
¿Pueden varios balanceadores de carga enrutar las solicitudes a un servidor backend?
¿Cómo se usa WebSocket?
¿Por qué no puedo seleccionar el grupo de servidores backend de destino al agregar o modificar un oyente?
¿Por qué no puedo agregar un oyente a un balanceador de carga dedicado?
Servidores backend
¿Por qué el intervalo en el que los servidores backend reciben paquetes de comprobación de estado es diferente de lo que he configurado?
¿Pueden los servidores backend acceder a Internet después de estar asociados con un balanceador de carga?
¿Puede ELB distribuir el tráfico entre servidores que no son proporcionados por Huawei Cloud?
¿Por qué se accede con frecuencia a los servidores backend mediante direcciones IP en 100.125.0.0/16?
¿Puede ELB enrutar el tráfico a través de regiones?
¿Cada servidor backend necesita una EIP para recibir solicitudes de un balanceador de carga de red pública?
¿Cómo puedo comprobar las condiciones de red de un servidor backend?
¿Cómo puedo comprobar la configuración de red de un servidor backend?
¿Cómo puedo comprobar el estado de un servidor backend?
¿Cuándo se considera saludable un servidor backend?
¿Cómo puedo comprobar si se puede acceder a un servidor backend por una EIP?
¿Por qué el número de conexiones activas monitorizadas por Cloud Eye difiere del número de conexiones establecidas con los servidores backend?
¿Por qué puedo acceder a los servidores backend después de configurar una lista blanca?
¿Cuándo entrarán en vigor las ponderaciones modificadas?
¿Por qué la subred donde reside el balanceador de carga debe tener al menos 16 direcciones IP disponibles para habilitar IP como backend?
Comprobaciones de estado
¿Cómo soluciono problemas de un servidor backend insalubre?
¿Por qué el intervalo en el que los servidores backend reciben paquetes de comprobación de estado es diferente del intervalo configurado?
¿Cómo realiza ELB las comprobaciones de estado de UDP? ¿Cuáles son las precauciones para las comprobaciones de estado de UDP?
¿Por qué ELB envía frecuentemente solicitudes a servidores backend durante las comprobaciones de estado?
¿Cuándo comienza una comprobación de estado?
¿Los reintentos máximos incluyen comprobaciones de estado que consideran que los servidores backend son insalubres?
¿Qué hago si se generan muchos logs de acceso durante las comprobaciones de estado?
¿Qué códigos de estado se devolverán si los servidores backend están identificados como saludables?
Obtención de direcciones IP de origen
¿Cómo puedo transferir la dirección IP de un cliente?
Oyentes de HTTP/HTTPS
¿Qué protocolo debo seleccionar para el grupo de servidores backend al agregar un oyente de HTTPS?
¿Por qué hay una advertencia de seguridad después de configurar un certificado?
¿Por qué es una política de reenvío en el estado defectuoso?
¿Por qué no puedo agregar una política de reenvío a un oyente?
¿Por qué no puedo seleccionar un grupo de servidores backend existente al agregar una política de reenvío?
Sesiones persistentes
¿Cuáles son las diferencias entre las conexiones persistentes y las sesiones adhesivas?
¿Cómo puedo comprobar si las sesiones adhesivas no surtieron efecto?
¿Cómo pruebo sesiones adhesivas con comandos de Linux Curl?
¿Qué tipos de sesiones adhesivas admite ELB?
Certificados
¿Cómo puedo crear certificados de servidor y certificados de CA?
¿ELB admite certificados comodín?
¿Por qué el acceso a los servidores backend sigue siendo anormal incluso si he creado un certificado?
¿Se interrumpirá la red o el equilibrio de carga cuando se reemplace un certificado?
Registro de acceso
¿Por qué no se muestran los logs de acceso para mi balanceador de carga?
¿Qué información puedo proporcionar para ayudar al personal de O&M?
Monitoreo
¿Por qué la tasa de salida en la consola de ELB es incompatible con las estadísticas de uso de ancho de banda en la consola de Cloud Eye?
¿Cuáles son las diferencias entre los códigos de estado de capa 7 y los códigos de estado backend en las métricas de ELB?
¿Por qué hay un gran número de errores de HTTP 499?
Facturación
¿Cuándo necesito el ancho de banda público para ELB?
¿Se me facturará tanto el ancho de banda utilizado por el balanceador de carga como el ancho de banda utilizado por los servidores backend?
¿Necesito ajustar el ancho de banda de los balanceadores de carga compartida según el ancho de banda utilizado por los servidores backend?
¿Puedo modificar el ancho de banda de un balanceador de carga?
¿Qué funciones no estarán disponibles si un balanceador de carga está congelado?
What's New
Function Overview
Billing
Billing Overview
Billing Mode
Overview
Pay-per-Use Billing
Billing Items (Dedicated Load Balancers)
Billing Items (Shared Load Balancers)
Billing Examples
Bills
Arrears
Stopping Billing
Cost Management
FAQs
When Do I Need Public Bandwidth for ELB?
Will I Be Billed for Both the Bandwidth Used by the Load Balancer and the Bandwidth Used by Backend Servers?
Do I Need to Adjust the Bandwidth of Shared Load Balancers Based on the Bandwidth Used by Backend Servers?
Can I Modify the Bandwidth of a Load Balancer?
What Functions Will Become Unavailable If a Load Balancer Is Frozen?
Best Practices
Load Balancer Selection and Service Planning
Planning Subnets for Dedicated Load Balancers
Adding the IP Address of an On-Premises Server as a Backend Server of a Dedicated Load Balancer
Using IP as a Backend to Route Traffic Across Backend Servers
Overview
Routing Traffic to Backend Servers in a Different VPC from the Load Balancer
Routing Traffic to Backend Servers in the Same VPC as the Load Balancer
Adding a Load Balancer to an AS Group to Automatically Add or Remove Backend Servers
Security
ELB Security Best Practices
Configuring HTTPS at the Frontend and Backend for Access Encryption
Integrating WAF with ELB to Protect Your Websites
Using ELB and CNAD Advanced to Enhance the Defense Against DDoS Attacks
Using Cloud Eye to Monitor ELB Resources
Basic Functions
Using ELB to Redirect HTTP Requests to an HTTPS Listener for Higher Service Security
Configuring One-way Authentication When Adding an HTTPS Listener
Configuring Mutual Authentication When Adding an HTTPS Listener
Using a Dedicated Load Balancer for TLS Offloading (One-Way Authentication)
Using a Dedicated Load Balancer for TLS Offloading (Mutual Authentication)
Advanced Functions
Using QUIC to Accelerate Access to an Application
Using ELB to Distribute gRPC Requests to Improve Concurrency Efficiency
Using WebSocket for Real-time Messaging
Using a Dedicated Load Balancer to Forward Traffic by Port Ranges
Enabling IPv4/IPv6 Translation to Enable IPv6 Clients to Access IPv4 Services
Using a Dedicated Load Balancer at Layer 4 to Transfer Client IP Addresses
Using a Dedicated Load Balancer at Layer 7 to Transfer Client IP Addresses
Querying Client IP Addresses in ELB Access Logs
Forwarding Policies
Using Advanced Forwarding for Application Iteration
Distributing Traffic Based on the Same Domain Name but Different Paths
SDK Reference
SDK Overview
Videos
Glossary
More Documents
User Guide (ME-Abu Dhabi Region)
Service Overview
What Is Elastic Load Balance?
Product Advantages
Application Scenarios
How ELB Works
Network Type
ELB and Other Services
Product Concepts
Basic Concepts
Region and AZ
Load Balancer
Network Type
Preparing for Creation
Creating a Load Balancer
Changing Load Balancer Settings
Binding or Unbinding an EIP
Deleting a Load Balancer
Listener
Overview
Protocols and Ports
Adding a Listener
Load Balancing Algorithms
Sticky Session
Access Control
Modifying or Deleting a Listener
Advanced Settings for HTTP or HTTPS Listeners
Forwarding Policy
Mutual Authentication
HTTP/2
HTTP Redirection to HTTPS
SNI
Backend Server
Overview
Configuring Security Group Rules
Adding Backend Servers to or Removing Backend Servers
Health Check
Configuring a Health Check
Disabling the Health Check Function
Certificate
Certificate and Private Key Format
Converting Certificate Formats
Creating a Certificate
Access Logging
Monitoring
Monitoring Metrics
Setting an Alarm Rule
Adding an Alarm Rule
Modifying an Alarm Rule
Viewing Metrics
Auditing
Key Operations Recorded by CTS
Viewing Traces
FAQs
Questions Summary
ELB Usage
Service Abnormality
How Can I Check ELB Unavailability or Routing Interruption?
ELB Functionality
Can ELB Be Used Separately?
Is the EIP Assigned to a Load Balancer Exclusive?
How Many Load Balancers and Listeners Can I Have?
Can I Adjust the Number of Backend Servers When a Load Balancer is Running?
Can Backend Servers Run Different OSs?
Performance and Workloads
How Can I Check Traffic Inconsistency?
How Can I Check that Traffic Is Unbalanced?
How Can I Check High Access Delay of a Load Balancer?
What Should I Do If a Load Balancer's Performance Fails the Stress Test?
Load Balancer
How Does ELB Distribute Traffic?
How Can I Configure a Public or Private Network Load Balancer?
Listener
What Are the Relationships Between Load Balancing Algorithms and Sticky Session Types?
How Can ELB Support Multiple Certificates?
How Can I Use WebSocket?
Backend Server
Why Is the Interval at Which Backend Servers Receive Health Check Packets Is Different from the Configured Health Check Interval?
Can Backend Servers Access the Public Network After They Are Associated with a Load Balancer?
How Can I Check the Network Conditions of a Backend Server?
How Can I Check the Network Configuration of a Backend Server?
How Can I Check the Status of a Backend Server?
When Is a Backend Server Considered Healthy?
Health Check
What Should I Do If a Backend Server Is Unhealthy?
What Are the Precautions of Using UDP for Health Checks?
Why Does ELB Frequently Send Requests to Backend Servers During Health Checks?
Obtaining Source IP Addresses
How Can I Obtain the IP Address of a Client?
HTTP/HTTPS Listeners
Why Is the Security Warning Still Displayed After a Certificate Is Configured?
Sticky Session
What Should I Do If Sticky Sessions Fail to Take Effect?
What Types of Sticky Sessions Does ELB Support?
Appendix
Configuring the TOA Plug-in
Change History
API Reference (ME-Abu Dhabi Region)
Before You Start
Notes and Constraints
Concepts
API Overview
Calling APIs
Making an API Request
Authentication
Response
Getting Started
Creating a Load Balancer
Load Balancer APIs
Load Balancer
Creating a Load Balancer
Querying Load Balancers
Querying Details of a Load Balancer
Querying the Status Tree of a Load Balancer
Updating a Load Balancer
Deleting a Load Balancer
Listener
Adding a Listener
Querying Listeners
Querying Details of a Listener
Updating a Listener
Deleting a Listener
Backend Server Group
Adding a Backend Server Group
Querying Backend Server Groups
Querying Details of a Backend Server Group
Updating a Backend Server Group
Deleting a Backend Server Group
Backend Server
Adding a Backend Server
Querying Backend Servers
Querying Details of a Backend Server
Updating a Backend Server
Removing a Backend Server
Health Check
Configuring a Health Check
Querying Health Checks
Querying Details of a Health Check
Updating a Health Check
Deleting a Health Check
Forwarding Policy
Adding a Forwarding Policy
Querying Forwarding Policies
Querying Details of a Forwarding Policy
Updating a Forwarding Policy
Deleting a Forwarding Policy
Forwarding Rule
Adding a Forwarding Rule
Querying Forwarding Rules
Querying Details of a Forwarding Rule
Updating a Forwarding Rule
Deleting a Forwarding Rule
Whitelist
Adding a Whitelist
Querying Whitelists
Querying Details of a Whitelist
Updating a Whitelist
Deleting a Whitelist
Certificate
Creating a Certificate
Querying Certificates
Querying Details of a Certificate
Updating a Certificate
Deleting a Certificate
Load Balancer (Enterprise Project) APIs
Load Balancer
Creating a Load Balancer
Querying Load Balancers
Querying Details of a Load Balancer
Querying the Status Tree of a Load Balancer
Updating a Load Balancer
Deleting a Load Balancer
Listener
Adding a Listener
Querying Details of a Listener
Querying Listeners
Updating a Listener
Deleting a Listener
Backend Server Group
Adding a Backend Server Group
Querying Backend Server Groups
Querying Details of a Backend Server Group
Updating a Backend Server Group
Deleting a Backend Server Group
Backend Server
Adding a Backend Server
Querying Backend Servers
Querying Details of a Backend Server
Updating a Backend Server
Removing a Backend Server
Health Check
Configuring a Health Check
Querying Health Checks
Querying Health Check Details
Updating a Health Check
Deleting a Health Check
Forwarding Policy
Adding a Forwarding Policy
Querying Forwarding Policies
Querying Details of a Forwarding Policy
Updating a Forwarding Policy
Deleting a Forwarding Policy
Forwarding Rule
Adding a Forwarding Rule
Querying Forwarding Rules
Querying Details of a Forwarding Rule
Updating a Forwarding Rule
Deleting a Forwarding Rule
Whitelist
Adding a Whitelist
Querying Details of a Whitelist
Querying a Whitelist
Updating a Whitelist
Deleting a Whitelist
Certificate
Creating a Certificate
Querying Certificates
Querying Details of a Certificate
Updating a Certificate
Deleting a Certificate
Common Parameters
HTTP Status Codes of Load Balancers
Appendix
Monitoring Metrics
General Information About Load Balancers
Querying Data in Pages
Sequencing Query Results
Querying Versions
Basic Workflow
Obtaining a Project ID
Change History
User Guide (Paris Region)
Service Overview
What Is ELB?
Product Advantages
How ELB Works
Application Scenarios
Differences Between Dedicated and Shared Load Balancers
Load Balancing on a Public or Private Network
Network Traffic Paths
Specifications of Dedicated Load Balancers
Quotas and Constraints
Billing (Shared Load Balancers)
Billing (Dedicated Load Balancers)
Permissions
Product Concepts
Basic Concepts
Region and AZ
How ELB Works with Other Services
Getting Started
Overview
Process Flowchart
Using Shared Load Balancers (Entry Level)
Using Shared Load Balancers (Advanced Level)
Load Balancer
Overview
Preparations for Creating a Load Balancer
Creating a Dedicated Load Balancer
Creating a Shared Load Balancer
Configuring Deletion Protection for Load Balancers
Modifying the Bandwidth
Changing the Specifications of a Dedicated Load Balancer
Changing an IP Address
Binding an IP Address to or Unbinding an IP Address from a Load Balancer
Adding to or Removing from an IPv6 Shared Bandwidth
Exporting the Load Balancer List
Deleting a Load Balancer
Listener
Overview
Protocols and Ports
Adding a TCP Listener
Adding a UDP Listener
Adding an HTTP Listener
Adding an HTTPS Listener
Adding a UDP Listener (with a QUIC Backend Server Group Associated)
Configuring Timeout Durations
Modifying or Deleting a Listener
Transfer Client IP Address
Advanced Features of HTTP/HTTPS Listeners
Forwarding Policy (Shared Load Balancers)
Forwarding Policy (Dedicated Load Balancers)
Advanced Forwarding (Dedicated Load Balancers)
Advanced Forwarding
Managing an Advanced Forwarding Policy
Mutual Authentication
HTTP/2
HTTP Redirection to HTTPS
Rewriting the X-Forwarded-Host Field
SNI Certificate
Backend Server Group
Overview
Key Features
Health Check
Load Balancing Algorithms
Sticky Session
Slow Start (Dedicated Load Balancers)
Creating a Backend Server Group (Dedicated Load Balancers)
Creating a Backend Server Group (Shared Load Balancers)
Modifying a Backend Server Group
Overview
Modifying Health Check Settings
Changing the Load Balancing Algorithm
Modifying Sticky Session Settings
Modifying Slow Start Settings (Dedicated Load Balancers)
Changing a Backend Server Group
Viewing a Backend Server Group
Deleting a Backend Server Group
Backend Server (Dedicated Load Balancers)
Overview
Security Group Rules
Managing Backend Servers
Adding Backend Servers
Viewing Backend Servers
Removing Backend Servers
Changing Backend Server Weights
IP Addresses as Backend Servers
Overview
Enabling IP as a Backend
Adding IP Addresses as Backend Servers
Viewing Backend Servers
Removing Backend Servers
Changing Backend Server Weights
Backend Server (Shared Load Balancers)
Overview
Security Group Rules
Managing Backend Servers
Adding Backend Servers
Viewing Backend Servers
Removing Backend Servers
Changing Backend Server Weights
Certificate
Introduction to Certificates
Certificate and Private Key Format
Converting Certificate Formats
Adding, Modifying, or Deleting a Certificate
Replacing the Certificate Bound to a Listener
Replacing the Certificate Bound to Different Listeners
Querying Listeners by Certificate
Access Control
Access Control
Managing IP Address Groups
Creating an IP Address Group
Viewing the Details of an IP Address Group
Managing IP Addresses in an IP Address Group
Deleting an IP Address Group
TLS Security Policy
Tag
Access Logging
Monitoring
Monitoring Metrics
Setting an Alarm Rule
Creating an Alarm Rule
Modifying an Alarm Rule
Viewing Metrics
Auditing
Key Operations Recorded by CTS
Viewing Traces
Load Balancer Migration
Migrating from Classic Load Balancers to Shared Load Balancers
Permissions Management
Creating a User and Granting Permissions
Creating a Custom Policy
Quotas
FAQ
Popular Questions
Why Can't I Access My Backend Servers Through a Load Balancer?
What Can I Do If ELB Can't Be Accessed or Traffic Routing is Interrupted?
How Can I Handle Error Codes?
Can ELB Be Used Separately?
Does ELB Support Persistent Connections?
Does ELB Support FTP on Backend Servers?
Is an EIP Assigned Exclusively to a Load Balancer?
How Many Load Balancers and Listeners Can I Have?
What Types of APIs Does ELB Provide? What Are Permissions of ELB?
Can I Adjust the Number of Backend Servers When a Load Balancer is Running?
Can Backend Servers Run Different OSs?
Can I Configure Different Backend Ports for a Load Balancer?
Can ELB Be Used Across Accounts or VPCs?
Can Backend Servers Access the Ports of a Load Balancer?
Can Both the Listener and Backend Server Group Use HTTPS?
Can I Change the VPC and Subnet for My Load Balancer?
Can I Upgrade a Shared Load Balancer to a Dedicated Load Balancer Without Interrupting Traffic Routing?
Does ELB Support IPv6 Networks?
How Do I Check for Traffic Inconsistencies?
How Do I Check If Traffic Is Being Evenly Distributed?
How Do I Check If There Is Excessive Access Delay?
What Do I Do If a Load Balancer Fails a Stress Test?
Load Balancers
How Does ELB Distribute Traffic?
How Can I Access a Load Balancer Across VPCs?
How Can I Configure Load Balancing for Containerized Applications?
Why Can't I Delete My Load Balancer?
Do I Need to Configure EIP Bandwidth for My Load Balancers?
Can I Bind Multiple EIPs to a Load Balancer?
Why Multiple IP Addresses Are Required When I Create or Enable a Dedicated Load Balancer?
Why Are Requests from the Same IP Address Routed to Different Backend Servers When the Load Balancing Algorithm Is Source IP Hash?
Can Backend Servers Access the Internet Using the EIP of the Load Balancer?
Do Shared Load Balancers Have Specifications?
Will Traffic Routing Be Interrupted If the Load Balancing Algorithm Is Changed?
What Is the Difference Between the Bandwidth Included in Each Specification of a Dedicated Load Balancer and the Bandwidth of an EIP?
How Do I Combine ELB and WAF?
Listeners
What Are the Relationships Between Load Balancing Algorithms and Sticky Session Types?
Can I Bind Multiple Certificates to a Listener?
What HTTP Headers Can I Configure for an HTTP and HTTP Listener?
Will ELB Stop Distributing Traffic Immediately After a Listener Is Deleted?
Does ELB Have Restrictions on the File Upload Speed and Size?
Can Multiple Load Balancers Route Requests to One Backend Server?
How Is WebSocket Used?
Why Can't I Select the Target Backend Server Group When Adding or Modifying a Listener?
Why Cannot I Add a Listener to a Dedicated Load Balancer?
Backend Servers
Why Is the Interval at Which Backend Servers Receive Health Check Packets Different from What I Have Configured?
Can Backend Servers Access the Internet After They Are Associated with a Load Balancer?
Why Are Backend Servers Frequently Accessed by IP Addresses in 100.125.0.0/16?
Can ELB Route Traffic Across Regions?
Does Each Backend Server Need an EIP to Receive Requests from a Public Network Load Balancer?
How Do I Check the Network Conditions of a Backend Server?
How Can I Check the Network Configuration of a Backend Server?
How Do I Check the Status of a Backend Server?
When Is a Backend Server Considered Healthy?
How Do I Check Whether a Backend Server Can Be Accessed Through an EIP?
Why Is the Number of Active Connections Monitored by Cloud Eye Different from the Number of Connections Established with the Backend Servers?
Why Can I Access Backend Servers After a Whitelist Is Configured?
When Will Modified Weights Take Effect?
Why Must the Subnet Where the Load Balancer Resides Have at Least 16 Available IP Addresses for Enabling IP as a Backend?
Health Checks
How Do I Troubleshoot an Unhealthy Backend Server?
Why Is the Interval at Which Backend Servers Receive Health Check Packets Different from the Configured Interval?
How Does ELB Perform UDP Health Checks? What Are the Precautions for UDP Health Checks?
Why Does ELB Frequently Send Requests to Backend Servers During Health Checks?
When Does a Health Check Start?
Do Maximum Retries Include Health Checks That Consider Backend Servers Unhealthy?
What Do I Do If a Lot of Access Logs Are Generated During Health Checks?
What Status Codes Will Be Returned If Backend Servers Are Identified as Healthy?
Obtaining Source IP Addresses
How Can I Transfer the IP Address of a Client?
HTTP/HTTPS Listeners
Which Protocol Should I Select for the Backend Server Group When Adding an HTTPS Listener?
Why Is There a Security Warning After a Certificate Is Configured?
Why Is a Forwarding Policy in the Faulty State?
Why Can't I Add a Forwarding Policy to a Listener?
Why Cannot I Select an Existing Backend Server Group When Adding a Forwarding Policy?
Sticky Sessions
What Are the Differences Between Persistent Connections and Sticky Sessions?
How Do I Check If Sticky Sessions Failed to Take Effect?
How Do I Test Sticky Sessions Using Linux Curl Commands?
What Types of Sticky Sessions Does ELB Support?
Certificates
How Can I Create Server Certificates and CA Certificates?
Does ELB Support Wildcard Certificates?
Why Is Access to Backend Servers Still Abnormal Even If I Have Created a Certificate?
Will the Network or Load Balancing Be Interrupted When a Certificate Is Being Replaced?
Monitoring
Why Is the Outgoing Rate on the ELB Console Inconsistent with the Bandwidth Usage Statistics on the Cloud Eye Console?
What Are the Differences Between Layer-7 Status Codes and Backend Status Codes in ELB Metrics?
Change History
API Reference (Paris Region)
Before You Start
Overview
API Calling
Endpoints
Notes and Constraints
Concepts
API Overview
Calling APIs
Making an API Request
Authentication
Response
Getting Started
Creating a Load Balancer
Obtaining a Token
Dedicated Load Balancer APIs
API Version
Querying API Versions
Quota
Querying Quotas
Querying Quota Usage
AZ
Querying AZs
Load Balancer
Creating a Load Balancer
Querying Load Balancers
Viewing Details of a Load Balancer
Updating a Load Balancer
Deleting a Load Balancer
Querying the Status Tree of a Load Balancer
Certificate
Creating a Certificate
Querying Certificates
Viewing Details of a Certificate
Updating a Certificate
Deleting a Certificate
Security Policy
Creating a Custom Security Policy
Querying Custom Security Policies
Querying Details of a Custom Security Policy
Updating a Custom Security Policy
Deleting a Custom Security Policy
Querying System Security Policies
IP Address Group
Creating an IP Address Group
Querying IP Address Groups
Viewing Details of an IP Address Group
Updating an IP Address Group
Deleting an IP Address Group
Updating IP Addresses in an IP Address Group
Deleting IP Addresses from an IP Address Group
Listener
Adding a Listener
Querying Listeners
Viewing Details of a Listener
Updating a Listener
Deleting a Listener
Backend Server Group
Creating a Backend Server Group
Querying Backend Server Groups
Viewing Details of a Backend Server Group
Updating a Backend Server Group
Deleting a Backend Server Group
Backend Server
Adding a Backend Server
Querying Backend Servers
Viewing Details of a Backend Server
Updating a Backend Server
Removing a Backend Server
Health Check
Configuring a Health Check
Querying Health Checks
Viewing Details of a Health Check
Updating a Health Check
Deleting a Health Check
Forwarding Policy
Adding a Forwarding Policy
Querying Forwarding Policies
Viewing Details of a Forwarding Policy
Updating a Forwarding Policy
Deleting a Forwarding Policy
Batch Updating Forwarding Policy Priorities
Forwarding Rule
Adding a Forwarding Rule
Querying Forwarding Rules
Viewing Details of a Forwarding Rule
Updating a Forwarding Rule
Deleting a Forwarding Rule
Classic Load Balancer APIs
Load Balancer
Creating a Load Balancer (Discarded)
Deleting a Load Balancer
Deleting a Public Network Load Balancer
Modifying a Load Balancer
Querying Details of a Load Balancer
Querying Load Balancers
Listener
Adding a Listener
Deleting a Listener
Modifying a Listener
Querying Details of a Listener
Querying Listeners
Health Check
Configuring a Health Check
Deleting a Health Check
Modifying a Health Check
Querying Details of a Health Check
Backend ECS
Adding Backend ECSs
Removing Backend ECSs
Querying Backend ECSs
Quota
Querying Load Balancer or Listener Quotas
Certificate
Creating a Certificate
Deleting a Certificate
Modifying a Certificate
Querying Certificates
Querying the Job Status
Querying Monitoring Metrics
API Version
Querying All API Versions
Querying a Specific API Version
Enhanced Load Balancer APIs
Load Balancer
Creating a Load Balancer
Querying Load Balancers
Querying Details of a Load Balancer
Querying the Status Tree of a Load Balancer
Updating a Load Balancer
Deleting a Load Balancer
Listener
Adding a Listener
Querying Listeners
Querying Details of a Listener
Updating a Listener
Deleting a Listener
Backend Server Group
Adding a Backend Server Group
Querying Backend Server Groups
Querying Details of a Backend Server Group
Updating a Backend Server Group
Deleting a Backend Server Group
Backend Server
Adding a Backend Server
Querying Backend Servers
Querying Details of a Backend Server
Updating a Backend Server
Removing a Backend Server
Health Check
Configuring a Health Check
Querying Health Checks
Querying Details of a Health Check
Updating a Health Check
Deleting a Health Check
Forwarding Policy
Adding a Forwarding Policy
Querying Forwarding Policies
Querying Details of a Forwarding Policy
Updating a Forwarding Policy
Deleting a Forwarding Policy
Forwarding Rule
Adding a Forwarding Rule
Querying Forwarding Rules
Querying Details of a Forwarding Rule
Updating a Forwarding Rule
Deleting a Forwarding Rule
Whitelist
Adding a Whitelist
Querying Whitelists
Querying Details of a Whitelist
Updating a Whitelist
Deleting a Whitelist
Certificate
Creating a Certificate
Querying Certificates
Querying Details of a Certificate
Updating a Certificate
Deleting a Certificate
Appendix
Error Codes
Status Codes
Monitoring Metrics
General Information About SharedLoad Balancers
Querying Data in Pages
Sequencing Query Results
Basic Workflow
Obtaining a Project ID
Change History
User Guide (Kuala Lumpur Region)
Service Overview
What Is ELB?
Product Advantages
How ELB Works
Application Scenarios
Load Balancing on a Public or Private Network
Network Traffic Paths
Specifications of Dedicated Load Balancers
Quotas and Constraints
Permissions
Product Concepts
Basic Concepts
Region and AZ
How ELB Works with Other Services
Getting Started
Overview
Process Flowchart
Using Load Balancers (Entry Level)
Using Load Balancers (Advanced Level)
Load Balancer
Overview
Preparations for Creating a Load Balancer
Creating a Dedicated Load Balancer
Modifying the Bandwidth
Changing the Specifications of a Dedicated Load Balancer
Changing an IP Address
Binding an IP Address to or Unbinding an IP Address from a Load Balancer
Adding to or Removing from an IPv6 Shared Bandwidth
Exporting the Load Balancer List
Deleting a Load Balancer
Listener
Overview
Protocols and Ports
Adding a TCP Listener
Adding a UDP Listener
Adding an HTTP Listener
Adding an HTTPS Listener
Configuring Timeout Durations
Modifying or Deleting a Listener
Transfer Client IP Address
Advanced Features of HTTP/HTTPS Listeners
Forwarding Policy (Dedicated Load Balancers)
Mutual Authentication
HTTP/2
HTTP Redirection to HTTPS
Transferring the Load Balancer EIP to Backend Servers
SNI Certificate
Backend Server Group
Overview
Key Features
Health Check
Load Balancing Algorithms
Sticky Session
Slow Start (Dedicated Load Balancers)
Creating a Backend Server Group
Modifying a Backend Server Group
Overview
Modifying Health Check Settings
Changing the Load Balancing Algorithm
Modifying Sticky Session Settings
Modifying Slow Start Settings (Dedicated Load Balancers)
Changing a Backend Server Group
Viewing a Backend Server Group
Deleting a Backend Server Group
Backend Server
Overview
Security Group Rules
Managing Backend Servers
Adding Backend Servers
Viewing Backend Servers
Removing Backend Servers
Changing Backend Server Weights
IP Addresses as Backend Servers
Overview
Enabling IP as a Backend
Adding IP Addresses as Backend Servers
Viewing Backend Servers
Removing Backend Servers
Changing Backend Server Weights
Certificate
Introduction to Certificates
Certificate and Private Key Format
Converting Certificate Formats
Adding, Modifying, or Deleting a Certificate
Replacing the Certificate Bound to a Listener
Replacing the Certificate Bound to Different Listeners
Querying Listeners by Certificate
Access Control
Access Control
Managing IP Address Groups
Creating an IP Address Group
Viewing the Details of an IP Address Group
Managing IP Addresses in an IP Address Group
Deleting an IP Address Group
Access Logging
Monitoring
Monitoring Metrics
Setting an Alarm Rule
Creating an Alarm Rule
Modifying an Alarm Rule
Viewing Metrics
Auditing
Key Operations Recorded by CTS
Viewing Traces
Quotas
FAQ
Popular Questions
Service Abnormality
Why Can't I Access My Backend Servers Through a Load Balancer?
What Can I Do If ELB Can't Be Accessed or Traffic Routing is Interrupted?
How Can I Handle Error Codes?
ELB Functionality
Can ELB Be Used Separately?
Does ELB Support Persistent Connections?
Does ELB Support FTP on Backend Servers?
Is an EIP Assigned Exclusively to a Load Balancer?
How Many Load Balancers and Listeners Can I Have?
What Types of APIs Does ELB Provide? What Are Permissions of ELB?
Can I Adjust the Number of Backend Servers When a Load Balancer is Running?
Can Backend Servers Run Different OSs?
Can I Configure Different Backend Ports for a Load Balancer?
Can ELB Be Used Across Accounts or VPCs?
Can Backend Servers Access the Ports of a Load Balancer?
Can Both the Listener and Backend Server Group Use HTTPS?
Can I Change the VPC and Subnet for My Load Balancer?
Load Balancing Performance
How Do I Check for Traffic Inconsistencies?
How Do I Check If Traffic Is Being Evenly Distributed?
How Do I Check If There Is Excessive Access Delay?
What Do I Do If a Load Balancer Fails a Stress Test?
Load Balancers
How Does ELB Distribute Traffic?
How Can I Access a Load Balancer Across VPCs?
Do I Need to Configure EIP Bandwidth for My Load Balancers?
Can I Bind Multiple EIPs to a Load Balancer?
Why Multiple IP Addresses Are Required When I Create or Enable a Dedicated Load Balancer?
Why Are Requests from the Same IP Address Routed to Different Backend Servers When the Load Balancing Algorithm Is Source IP Hash?
Can Backend Servers Access the Internet Using the EIP of the Load Balancer?
Will Traffic Routing Be Interrupted If the Load Balancing Algorithm Is Changed?
What Is the Difference Between the Bandwidth Included in Each Specification of a Dedicated Load Balancer and the Bandwidth of an EIP?
Listeners
What Are the Relationships Between Load Balancing Algorithms and Sticky Session Types?
Can I Bind Multiple Certificates to a Listener?
Will ELB Stop Distributing Traffic Immediately After a Listener Is Deleted?
Does ELB Have Restrictions on the File Upload Speed and Size?
Can Multiple Load Balancers Route Requests to One Backend Server?
How Is WebSocket Used?
Why Can't I Select the Target Backend Server Group When Adding or Modifying a Listener?
Why Cannot I Add a Listener to a Dedicated Load Balancer?
Backend Servers
Why Is the Interval at Which Backend Servers Receive Health Check Packets Different from What I Have Configured?
Can Backend Servers Access the Internet After They Are Associated with a Load Balancer?
Can ELB Route Traffic Across Regions?
Does Each Backend Server Need an EIP to Receive Requests from a Public Network Load Balancer?
How Do I Check the Network Conditions of a Backend Server?
How Can I Check the Network Configuration of a Backend Server?
How Do I Check the Status of a Backend Server?
When Is a Backend Server Considered Healthy?
Why Can I Access Backend Servers After a Whitelist Is Configured?
When Will Modified Weights Take Effect?
Why Must the Subnet Where the Load Balancer Resides Have at Least 16 Available IP Addresses for Enabling IP as a Backend?
Health Checks
How Do I Troubleshoot an Unhealthy Backend Server?
Why Is the Interval at Which Backend Servers Receive Health Check Packets Different from the Configured Interval?
How Does ELB Perform UDP Health Checks? What Are the Precautions for UDP Health Checks?
Why Does ELB Frequently Send Requests to Backend Servers During Health Checks?
When Does a Health Check Start?
Do Maximum Retries Include Health Checks That Consider Backend Servers Unhealthy?
What Do I Do If a Lot of Access Logs Are Generated During Health Checks?
What Status Codes Will Be Returned If Backend Servers Are Identified as Healthy?
Obtaining Source IP Addresses
How Can I Transfer the IP Address of a Client?
HTTP/HTTPS Listeners
Which Protocol Should I Select for the Backend Server Group When Adding an HTTPS Listener?
Why Is There a Security Warning After a Certificate Is Configured?
Why Is a Forwarding Policy in the Faulty State?
Why Can't I Add a Forwarding Policy to a Listener?
Why Cannot I Select an Existing Backend Server Group When Adding a Forwarding Policy?
Sticky Sessions
What Are the Differences Between Persistent Connections and Sticky Sessions?
How Do I Check If Sticky Sessions Failed to Take Effect?
How Do I Test Sticky Sessions Using Linux Curl Commands?
What Types of Sticky Sessions Does ELB Support?
Certificates
How Can I Create Server Certificates and CA Certificates?
Does ELB Support Wildcard Certificates?
Why Is Access to Backend Servers Still Abnormal Even If I Have Created a Certificate?
Will the Network or Load Balancing Be Interrupted When a Certificate Is Being Replaced?
Monitoring
Why Is the Outgoing Rate on the ELB Console Inconsistent with the Bandwidth Usage Statistics on the Cloud Eye Console?
What Are the Differences Between Layer-7 Status Codes and Backend Status Codes in ELB Metrics?
Why Is There a Large Number of HTTP 499 Errors?
Change History
API Reference (Kuala Lumpur Region)
Before You Start
Endpoints
Notes and Constraints
Concepts
API Overview
Calling APIs
Making an API Request
Authentication
Response
APIs
Load Balancer
Creating a Load Balancer
Querying Load Balancers
Querying Details of a Load Balancer
Querying the Status Tree of a Load Balancer
Updating a Load Balancer
Deleting a Load Balancer
Listener
Adding a Listener
Querying Details of a Listener
Querying Listeners
Updating a Listener
Deleting a Listener
Backend Server Group
Adding a Backend Server Group
Querying Backend Server Groups
Querying Details of a Backend Server Group
Updating a Backend Server Group
Deleting a Backend Server Group
Backend Server
Adding a Backend Server
Querying Backend Servers
Querying Details of a Backend Server
Updating a Backend Server
Removing a Backend Server
Health Check
Configuring a Health Check
Querying Health Checks
Querying Health Check Details
Updating a Health Check
Deleting a Health Check
Forwarding Policy
Adding a Forwarding Policy
Querying Forwarding Policies
Querying Details of a Forwarding Policy
Updating a Forwarding Policy
Deleting a Forwarding Policy
Forwarding Rule
Adding a Forwarding Rule
Querying Forwarding Rules
Querying Details of a Forwarding Rule
Updating a Forwarding Rule
Deleting a Forwarding Rule
Whitelist
Adding a Whitelist
Querying Details of a Whitelist
Querying Whitelists
Updating a Whitelist
Deleting a Whitelist
Certificate
Creating a Certificate
Querying Certificates
Querying Details of a Certificate
Updating a Certificate
Deleting a Certificate
Permissions Policies and Supported Actions
Introduction
Supported Actions
Load Balancer
Listener
Backend Server Group
Backend Server
Health Check
Forwarding Policy
Forwarding Rule
Whitelist
SSL Certificate
Quota
Tag
Precautions for API Permissions
Appendix
Status Codes
Monitoring Metrics
General Information About Load Balancers
Querying Data in Pages
Sequencing Query Results
Basic Workflow
Obtaining a Project ID
Historical APIs
Load Balancer APIs (OpenStack)
Load Balancer
Creating a Load Balancer
Querying Load Balancers
Querying Details of a Load Balancer
Querying the Status Tree of a Load Balancer
Updating a Load Balancer
Deleting a Load Balancer
Listener
Adding a Listener
Querying Listeners
Querying Details of a Listener
Updating a Listener
Deleting a Listener
Backend Server Group
Adding a Backend Server Group
Querying Backend Server Groups
Querying Details of a Backend Server Group
Updating a Backend Server Group
Deleting a Backend Server Group
Backend Server
Adding a Backend Server
Querying Backend Servers
Querying Details of a Backend Server
Updating a Backend Server
Removing a Backend Server
Health Check
Configuring a Health Check
Querying Health Checks
Querying Details of a Health Check
Updating a Health Check
Deleting a Health Check
Forwarding Policy
Adding a Forwarding Policy
Querying Forwarding Policies
Querying Details of a Forwarding Policy
Updating a Forwarding Policy
Deleting a Forwarding Policy
Forwarding Rule
Adding a Forwarding Rule
Querying Forwarding Rules
Querying Details of a Forwarding Rule
Updating a Forwarding Rule
Deleting a Forwarding Rule
Whitelist
Adding a Whitelist
Querying Whitelists
Querying Details of a Whitelist
Updating a Whitelist
Deleting a Whitelist
Certificate
Creating a Certificate
Querying Certificates
Querying Details of a Certificate
Updating a Certificate
Deleting a Certificate
Querying Versions
Getting Started
Creating a Load Balancer
Change History
User Guide (Ankara Region)
Service Overview
What Is ELB?
Product Advantages
How ELB Works
Application Scenarios
Load Balancing on a Public or Private Network
Network Traffic Paths
Quotas and Constraints
Permissions
Product Concepts
Basic Concepts
Region and AZ
How ELB Works with Other Services
Load Balancer
Overview
Preparations for Creating a Load Balancer
Creating a Dedicated Load Balancer
Modifying the Bandwidth
Changing an IP Address
Binding an IP Address to or Unbinding an IP Address from a Load Balancer
Exporting the Load Balancer List
Deleting a Load Balancer
Listener
Overview
Adding a TCP Listener
Adding a UDP Listener
Adding an HTTP Listener
Adding an HTTPS Listener
Configuring Timeout Durations
Modifying or Deleting a Listener
Transfer Client IP Address
Advanced Features of HTTP/HTTPS Listeners
Forwarding Policy (Dedicated Load Balancers)
Mutual Authentication
HTTP/2
HTTP Redirection to HTTPS
Transferring the Load Balancer EIP to Backend Servers
SNI Certificate
Backend Server Group
Overview
Key Features
Health Check
Load Balancing Algorithms
Sticky Session
Slow Start (Dedicated Load Balancers)
Creating a Backend Server Group
Modifying a Backend Server Group
Overview
Modifying Health Check Settings
Changing the Load Balancing Algorithm
Modifying Sticky Session Settings
Modifying Slow Start Settings (Dedicated Load Balancers)
Changing a Backend Server Group
Viewing a Backend Server Group
Deleting a Backend Server Group
Backend Server
Overview
Security Group Rules
Managing Backend Servers
Adding Backend Servers
Viewing Backend Servers
Removing Backend Servers
Changing Backend Server Weights
IP Addresses as Backend Servers
Overview
Enabling IP as a Backend
Adding IP Addresses as Backend Servers
Viewing Backend Servers
Removing Backend Servers
Changing Backend Server Weights
Certificate
Introduction to Certificates
Certificate and Private Key Format
Converting Certificate Formats
Adding, Modifying, or Deleting a Certificate
Replacing the Certificate Bound to a Listener
Replacing the Certificate Bound to Different Listeners
Querying Listeners by Certificate
Access Control
Access Control
Managing IP Address Groups
Creating an IP Address Group
Viewing the Details of an IP Address Group
Managing IP Addresses in an IP Address Group
Deleting an IP Address Group
TLS Security Policy
Access Logging
Monitoring
Monitoring Metrics
Setting an Alarm Rule
Creating an Alarm Rule
Modifying an Alarm Rule
Viewing Metrics
Quotas
FAQ
Popular Questions
ELB Functionality
Can ELB Be Used Separately?
Does ELB Support Persistent Connections?
Does ELB Support FTP on Backend Servers?
Is an EIP Assigned Exclusively to a Load Balancer?
How Many Load Balancers and Listeners Can I Have?
What Types of APIs Does ELB Provide? What Are Permissions of ELB?
Can I Adjust the Number of Backend Servers When a Load Balancer is Running?
Can Backend Servers Run Different OSs?
Can I Configure Different Backend Ports for a Load Balancer?
Can ELB Be Used Across Accounts or VPCs?
Can Backend Servers Access the Ports of a Load Balancer?
Can Both the Listener and Backend Server Group Use HTTPS?
Can I Change the VPC and Subnet for My Load Balancer?
Load Balancers
How Does ELB Distribute Traffic?
How Can I Access a Load Balancer Across VPCs?
Do I Need to Configure EIP Bandwidth for My Load Balancers?
Can I Bind Multiple EIPs to a Load Balancer?
Why Multiple IP Addresses Are Required When I Create or Enable a Dedicated Load Balancer?
Why Are Requests from the Same IP Address Routed to Different Backend Servers When the Load Balancing Algorithm Is Source IP Hash?
Can Backend Servers Access the Internet Using the EIP of the Load Balancer?
Will Traffic Routing Be Interrupted If the Load Balancing Algorithm Is Changed?
What Is the Difference Between the Bandwidth Included in Each Specification of a Dedicated Load Balancer and the Bandwidth of an EIP?
Listeners
What Are the Relationships Between Load Balancing Algorithms and Sticky Session Types?
Can I Bind Multiple Certificates to a Listener?
Will ELB Stop Distributing Traffic Immediately After a Listener Is Deleted?
Does ELB Have Restrictions on the File Upload Speed and Size?
Can Multiple Load Balancers Route Requests to One Backend Server?
How Is WebSocket Used?
Why Can't I Select the Target Backend Server Group When Adding or Modifying a Listener?
Why Cannot I Add a Listener to a Dedicated Load Balancer?
Backend Servers
Why Is the Interval at Which Backend Servers Receive Health Check Packets Different from What I Have Configured?
Can Backend Servers Access the Internet After They Are Associated with a Load Balancer?
Can ELB Route Traffic Across Regions?
Does Each Backend Server Need an EIP to Receive Requests from a Public Network Load Balancer?
How Do I Check the Network Conditions of a Backend Server?
How Can I Check the Network Configuration of a Backend Server?
How Do I Check the Status of a Backend Server?
When Is a Backend Server Considered Healthy?
Why Can I Access Backend Servers After a Whitelist Is Configured?
When Will Modified Weights Take Effect?
Why Must the Subnet Where the Load Balancer Resides Have at Least 16 Available IP Addresses for Enabling IP as a Backend?
Health Checks
How Do I Troubleshoot an Unhealthy Backend Server?
Why Is the Interval at Which Backend Servers Receive Health Check Packets Different from the Configured Interval?
How Does ELB Perform UDP Health Checks? What Are the Precautions for UDP Health Checks?
Why Does ELB Frequently Send Requests to Backend Servers During Health Checks?
When Does a Health Check Start?
Do Maximum Retries Include Health Checks That Consider Backend Servers Unhealthy?
What Do I Do If a Lot of Access Logs Are Generated During Health Checks?
What Status Codes Will Be Returned If Backend Servers Are Identified as Healthy?
Obtaining Source IP Addresses
How Can I Transfer the IP Address of a Client?
HTTP/HTTPS Listeners
Which Protocol Should I Select for the Backend Server Group When Adding an HTTPS Listener?
Why Is There a Security Warning After a Certificate Is Configured?
Why Is a Forwarding Policy in the Faulty State?
Why Can't I Add a Forwarding Policy to a Listener?
Why Cannot I Select an Existing Backend Server Group When Adding a Forwarding Policy?
Sticky Sessions
What Are the Differences Between Persistent Connections and Sticky Sessions?
How Do I Check If Sticky Sessions Failed to Take Effect?
How Do I Test Sticky Sessions Using Linux Curl Commands?
What Types of Sticky Sessions Does ELB Support?
Certificates
How Can I Create Server Certificates and CA Certificates?
Does ELB Support Wildcard Certificates?
Why Is Access to Backend Servers Still Abnormal Even If I Have Created a Certificate?
Will the Network or Load Balancing Be Interrupted When a Certificate Is Being Replaced?
Monitoring
Why Is the Outgoing Rate on the ELB Console Inconsistent with the Bandwidth Usage Statistics on the Cloud Eye Console?
What Are the Differences Between Layer-7 Status Codes and Backend Status Codes in ELB Metrics?
Why Is There a Large Number of HTTP 499 Errors?
Change History
API Reference (Ankara Region)
Before You Start
API Overview
Calling APIs
Making an API Request
Authentication
Response
APIs (V3)
API Version
Querying API Versions
Quota
Querying Quotas
Querying Quota Usage
AZ
Querying AZs
Load Balancer
Querying Load Balancers
Viewing the Details of a Load Balancer
Updating a Load Balancer
Deleting a Load Balancer
Querying the Status Tree of a Load Balancer
Certificate
Creating a Certificate
Querying Certificates
Querying the Details of a Certificate
Updating a Certificate
Deleting a Certificate
Security Policy
Creating a Custom Security Policy
Querying Custom Security Policies
Querying the Details of a Custom Security Policy
Updating a Custom Security Policy
Deleting a Custom Security Policy
Querying System Security Policies
IP Address Group
Creating an IP Address Group
Querying IP Address Groups
Querying the Details of an IP Address Group
Updating an IP Address Group
Deleting an IP Address Group
Updating IP Addresses in an IP Address Group
Deleting IP Addresses from an IP Address Group
Listener
Adding a Listener
Querying Listeners
Viewing the Details of a Listener
Updating a Listener
Deleting a Listener
Backend Server Group
Creating a Backend Server Group
Querying Backend Server Groups
Querying the Details of a Backend Server Group
Updating a Backend Server Group
Deleting a Backend Server Group
Backend Server
Adding a Backend Server
Querying Backend Servers
Viewing the Details of a Backend Server
Updating a Backend Server
Removing a Backend Server
Health Check
Configuring a Health Check
Querying Health Checks
Viewing the Details of a Health Check
Updating a Health Check
Deleting a Health Check
Forwarding Policy
Adding a Forwarding Policy
Querying Forwarding Policies
Querying the Details of a Forwarding Policy
Modifying a Forwarding Policy
Deleting a Forwarding Policy
Batch Modifying Forwarding Policy Priorities
Forwarding Rule
Adding a Forwarding Rule
Querying Forwarding Rules
Viewing the Details of a Forwarding Rule
Updating a Forwarding Rule
Deleting a Forwarding Rule
APIs (V2)
Load Balancer
Creating a Load Balancer
Querying Load Balancers
Querying Details of a Load Balancer
Querying the Status Tree of a Load Balancer
Updating a Load Balancer
Deleting a Load Balancer
Backend Server Group
Adding a Backend Server Group
Querying Backend Server Groups
Querying Details of a Backend Server Group
Updating a Backend Server Group
Deleting a Backend Server Group
Backend Server
Adding a Backend Server
Querying Backend Servers
Querying Details of a Backend Server
Updating a Backend Server
Removing a Backend Server
Health Check
Configuring a Health Check
Querying Health Checks
Querying Health Check Details
Updating a Health Check
Deleting a Health Check
Forwarding Policy
Adding a Forwarding Policy
Querying Forwarding Policies
Querying Details of a Forwarding Policy
Updating a Forwarding Policy
Deleting a Forwarding Policy
Forwarding Rule
Adding a Forwarding Rule
Querying Forwarding Rules
Querying Details of a Forwarding Rule
Updating a Forwarding Rule
Deleting a Forwarding Rule
Whitelist
Adding a Whitelist
Querying Details of a Whitelist
Querying Whitelists
Updating a Whitelist
Deleting a Whitelist
Certificate
Creating a Certificate
Querying Certificates
Querying Details of a Certificate
Updating a Certificate
Deleting a Certificate
APIs (OpenStack)
Tag
Adding a Tag to a Load Balancer
Batch Adding Load Balancer Tags
Batch Deleting Load Balancer Tags
Querying All Tags of a Load Balancer
Querying the Tags of All Load Balancers
Querying Load Balancers by Tag
Deleting a Tag from a Load Balancer
Adding a Tag to a Listener
Batch Adding Tags to a Listener
Batch Deleting Tags from a Listener
Querying All Tags of a Listener
Querying the Tags of All Listeners
Querying Listeners by Tag
Deleting a Tag from a Listener
Status Codes
Permissions and Supported Actions
Supported Actions (V2)
Load Balancer
Listener
Backend Server Group
Backend Server
Health Check
Forwarding Policy
Forwarding Rule
Whitelist
SSL Certificate
Quota
Tag
Precautions for API Permissions
Supported Actions (V3)
Load Balancer
Listener
Backend Server Group
Backend Server
Health Check
Forwarding Policy
Forwarding Rule
IP Address Group
Certificate
Security Policy
Quota
API Version
Availability Zone
Load Balancer Flavor
Precautions for API Permissions
Appendix
Error Codes
Status Codes
Obtaining a Project ID
Querying Data in Pages
Change History