El contenido no se encuentra disponible en el idioma seleccionado. Estamos trabajando continuamente para agregar más idiomas. Gracias por su apoyo.

Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
SoftWare Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive

ALM-18002 NodeManager Heartbeat Lost

Updated on 2022-08-12 GMT+08:00

Description

The system checks the number of lost NodeManager nodes every 30 seconds, and compares the number with the threshold. The Number of Lost Nodes indicator has a default threshold. The alarm is generated when the value of Number of Lost Nodes exceeds the threshold.

To change the threshold, on FusionInsight Manager, choose Cluster > Name of the desired cluster > Services > Yarn. On the displayed page, choose Configurations > All Configurations, and change the value of yarn.nodemanager.lost.alarm.threshold. You do not need to restart Yarn to make the change take effect.

The default threshold is 0. The alarm is generated when the number of lost nodes exceeds the threshold, and is cleared when the number of lost nodes is less than the threshold.

Attribute

Alarm ID

Alarm Severity

Automatically Cleared

18002

Major

Yes

Parameters

Name

Meaning

Source

Specifies the cluster for which the alarm is generated.

ServiceName

Specifies the service for which the alarm is generated.

RoleName

Specifies the role for which the alarm is generated.

HostName

Specifies the host for which the alarm is generated.

Lost Host

Specifies the list of hosts with lost nodes.

Impact on the System

  • The lost NodeManager node cannot provide the Yarn service.
  • The number of containers decreases, so the cluster performance deteriorates.

Possible Causes

  • NodeManager is forcibly deleted without decommission.
  • All the NodeManager instances are stopped or the NodeManager process is faulty.
  • The host where the NodeManager node resides is faulty.
  • The network between the NodeManager and ResourceManager is disconnected or busy.

Procedure

Check the NodeManager status.

  1. On the FusionInsight Manager, and choose O&M > Alarm > Alarms. Click before the alarm and obtain lost nodes in Additional Information.
  2. Check whether the lost nodes are hosts that have been manually deleted without decommission.

    • If yes, go to 3.
    • If no, go to 5.

  3. After the setting, Choose Cluster > Name of the desired cluster > Services > Yarn. On the displayed page, choose Configurations > All Configurations. Search for yarn.nodemanager.lost.alarm.threshold and change its value to the number of hosts that are not out of service and proactively deleted. After the setting, check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 4.

  4. Manually clear the alarm. Note that decommission must be performed before deleting hosts.
  5. On the FusionInsight Manager portal, choose Cluster > Hosts, and check whether the nodes obtained in 1 are healthy.

    • If yes, go to 7.
    • If no, go to 6.

  6. Rectify the node fault based on ALM-12006 Node Fault and check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 7.

Check the process status.

  1. On the FusionInsight Manager, choose Cluster > Name of the desired cluster > Services > Yarn > Instance, and check whether there are NodeManager instances whose status is not Good.

    • If yes, go to 10.
    • If no, go to 8.

  2. Check whether the NodeManager instance is deleted.

    • If yes, go to 9.
    • If no, go to 11.

  3. Restart the active and standby ResourceManager instances, and check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 13.

Check the instance status.

  1. Select NodeManager instances which running state is not Normal and restart them. Check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 11.

Check the network status.

  1. Log in to the management node, ping the IP address of the lost NodeManager node to check whether the network is disconnected or busy.

    • If yes, go to 12.
    • If no, go to 13.

  2. Rectify the network, and check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 13.

Collect fault information.

  1. On the FusionInsight Manager in the active cluster, choose O&M > Log > Download.
  2. Select Yarn in the required cluster from the Service.
  3. Click in the upper right corner, and set Start Date and End Date for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click Download.
  4. Contact the O&M personnel and send the collected logs.

Alarm Clearing

After the fault is rectified, the system automatically clears this alarm.

Related Information

None

Utilizamos cookies para mejorar nuestro sitio y tu experiencia. Al continuar navegando en nuestro sitio, tú aceptas nuestra política de cookies. Descubre más

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback