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Cloud Container Engine
Cloud Container Engine
- What's New
- Function Overview
-
Product Bulletin
- Latest Notices
- Product Change Notices
- Cluster Version Release Notes
-
Vulnerability Notices
- Vulnerability Fixing Policies
- Notice of Container Escape Vulnerability in NVIDIA Container Toolkit (CVE-2024-0132)
- Notice of Linux Remote Code Execution Vulnerability in CUPS (CVE-2024-47076, CVE-2024-47175, CVE-2024-47176, and CVE-2024-47177)
- Notice of the NGINX Ingress Controller Vulnerability That Allows Attackers to Bypass Annotation Validation (CVE-2024-7646)
- Notice of Docker Engine Vulnerability That Allows Attackers to Bypass AuthZ (CVE-2024-41110)
- Notice of Linux Kernel Privilege Escalation Vulnerability (CVE-2024-1086)
- Notice of OpenSSH Remote Code Execution Vulnerability (CVE-2024-6387)
- Notice of runC systemd Attribute Injection Vulnerability (CVE-2024-3154)
- Notice of the Impact of runC Vulnerability (CVE-2024-21626)
- Notice on the Kubernetes Security Vulnerability (CVE-2022-3172)
- Privilege Escalation Vulnerability in Linux Kernel openvswitch Module (CVE-2022-2639)
- Notice on nginx-ingress Add-On Security Vulnerability (CVE-2021-25748)
- Notice on nginx-ingress Security Vulnerabilities (CVE-2021-25745 and CVE-2021-25746)
- Notice on the containerd Process Privilege Escalation Vulnerability (CVE-2022-24769)
- Notice on CRI-O Container Runtime Engine Arbitrary Code Execution Vulnerability (CVE-2022-0811)
- Notice on the Container Escape Vulnerability Caused by the Linux Kernel (CVE-2022-0492)
- Notice on the Non-Security Handling Vulnerability of containerd Image Volumes (CVE-2022-23648)
- Linux Kernel Integer Overflow Vulnerability (CVE-2022-0185)
- Linux Polkit Privilege Escalation Vulnerability (CVE-2021-4034)
- Notice on the Vulnerability of Kubernetes subPath Symlink Exchange (CVE-2021-25741)
- Notice of runC Vulnerability That Allows a Container Filesystem Breakout via Directory Traversal (CVE-2021-30465)
- Notice on the Docker Resource Management Vulnerability (CVE-2021-21285)
- Notice of NVIDIA GPU Driver Vulnerability (CVE-2021-1056)
- Notice on the Sudo Buffer Vulnerability (CVE-2021-3156)
- Notice on the Kubernetes Security Vulnerability (CVE-2020-8554)
- Notice of Apache containerd Security Vulnerability (CVE-2020-15257)
- Notice on the Docker Engine Input Verification Vulnerability (CVE-2020-13401)
- Notice of Kubernetes kube-apiserver Input Verification Vulnerability (CVE-2020-8559)
- Notice on the Kubernetes kubelet Resource Management Vulnerability (CVE-2020-8557)
- Notice on the Kubernetes kubelet and kube-proxy Authorization Vulnerability (CVE-2020-8558)
- Notice on Fixing Kubernetes HTTP/2 Vulnerability
- Notice on Fixing Linux Kernel SACK Vulnerabilities
- Notice on Fixing the Docker Command Injection Vulnerability (CVE-2019-5736)
- Notice on Fixing the Kubernetes Permission and Access Control Vulnerability (CVE-2018-1002105)
- Notice of Fixing the Kubernetes Dashboard Security Vulnerability (CVE-2018-18264)
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Product Release Notes
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Cluster Versions
- Kubernetes Version Policy
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Kubernetes Version Release Notes
- Kubernetes 1.29 Release Notes
- Kubernetes 1.28 Release Notes
- Kubernetes 1.27 Release Notes
- Kubernetes 1.25 Release Notes
- Kubernetes 1.23 Release Notes
- Kubernetes 1.21 (EOM) Release Notes
- Kubernetes 1.19 (EOM) Release Notes
- Kubernetes 1.17 (EOM) Release Notes
- Kubernetes 1.15 (EOM) Release Notes
- Kubernetes 1.13 (EOM) Release Notes
- Kubernetes 1.11 (EOM) Release Notes
- Kubernetes 1.9 (EOM) and Earlier Versions Release Notes
- Patch Versions
- OS Images
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Add-on Versions
- CoreDNS Release History
- CCE Container Storage (Everest) Release History
- CCE Node Problem Detector Release History
- Kubernetes Dashboard Release History
- CCE Cluster Autoscaler Release History
- NGINX Ingress Controller Release History
- Kubernetes Metrics Server Release History
- CCE Advanced HPA Release History
- CCE Cloud Bursting Engine for CCI Release History
- CCE AI Suite (NVIDIA GPU) Release History
- CCE AI Suite (Ascend NPU) Release History
- Volcano Scheduler Release History
- CCE Secrets Manager for DEW Release History
- CCE Network Metrics Exporter Release History
- NodeLocal DNSCache Release History
- Cloud Native Cluster Monitoring Release History
- Cloud Native Logging Release History
- CCE Cluster Backup & Recovery (End of Maintenance) Release History
- Kubernetes Web Terminal (End of Maintenance) Release History
- Prometheus (End of Maintenance) Release History
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Cluster Versions
- Service Overview
- Billing
- Kubernetes Basics
- Getting Started
-
User Guide
- High-Risk Operations
-
Clusters
-
Cluster Overview
- Basic Cluster Information
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Kubernetes Version Release Notes
- Kubernetes 1.29 Release Notes
- Kubernetes 1.28 Release Notes
- Kubernetes 1.27 Release Notes
- Kubernetes 1.25 Release Notes
- Kubernetes 1.23 Release Notes
- Kubernetes 1.21 (EOM) Release Notes
- Kubernetes 1.19 (EOM) Release Notes
- Kubernetes 1.17 (EOM) Release Notes
- Kubernetes 1.15 (EOM) Release Notes
- Kubernetes 1.13 (EOM) Release Notes
- Kubernetes 1.11 (EOM) Release Notes
- Release Notes for Kubernetes 1.9 (EOM) and Earlier Versions
- Patch Version Release Notes
- Buying a Cluster
- Connecting to a Cluster
-
Managing a Cluster
- Modifying Cluster Configurations
- Enabling Overload Control for a Cluster
- Changing Cluster Scale
- Changing the Default Security Group of a Node
- Deleting a Cluster
- Hibernating or Waking Up a Cluster
- Renewing a Yearly/Monthly Cluster
- Changing the Billing Mode of a Cluster from Pay-per-Use to Yearly/Monthly
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Upgrading a Cluster
- Process and Method of Upgrading a Cluster
- Before You Start
- Performing Post-Upgrade Verification
- Migrating Services Across Clusters of Different Versions
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Troubleshooting for Pre-upgrade Check Exceptions
- Pre-upgrade Check
- Node Restrictions
- Upgrade Management
- Add-ons
- Helm Charts
- SSH Connectivity of Master Nodes
- Node Pools
- Security Groups
- Arm Node Restrictions
- Residual Nodes
- Discarded Kubernetes Resources
- Compatibility Risks
- CCE Agent Versions
- Node CPU Usage
- CRDs
- Node Disks
- Node DNS
- Node Key Directory File Permissions
- kubelet
- Node Memory
- Node Clock Synchronization Server
- Node OS
- Node CPU Cores
- Node Python Commands
- ASM Version
- Node Readiness
- Node journald
- containerd.sock
- Internal Error
- Node Mount Points
- Kubernetes Node Taints
- Everest Restrictions
- cce-hpa-controller Limitations
- Enhanced CPU Policies
- Health of Worker Node Components
- Health of Master Node Components
- Memory Resource Limit of Kubernetes Components
- Discarded Kubernetes APIs
- IPv6 Support in CCE Turbo Clusters
- NetworkManager
- Node ID File
- Node Configuration Consistency
- Node Configuration File
- CoreDNS Configuration Consistency
- sudo
- Key Node Commands
- Mounting of a Sock File on a Node
- HTTPS Load Balancer Certificate Consistency
- Node Mounting
- Login Permissions of User paas on a Node
- Private IPv4 Addresses of Load Balancers
- Historical Upgrade Records
- CIDR Block of the Cluster Management Plane
- GPU Add-on
- Nodes' System Parameters
- Residual Package Version Data
- Node Commands
- Node Swap
- nginx-ingress Upgrade
- ELB Listener Access Control
- Master Node Flavor
- Subnet Quota of Master Nodes
- Node Runtime
- Node Pool Runtime
- Number of Node Images
- OpenKruise Compatibility Check
- Compatibility Check of Secret Encryption
- Compatibility Between the Ubuntu Kernel and GPU Driver
- Drainage Tasks
- Image Layers on a Node
- Cluster Rolling Upgrade
- Rotation Certificates
- Ingress and ELB Configuration Consistency
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Cluster Overview
-
Nodes
- Node Overview
- Container Engines
- Node OSs
- Creating a Node
- Accepting Nodes for Management
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Management Nodes
- Managing Node Labels
- Managing Node Taints
- Resetting a Node
- Removing a Node
- Synchronizing the Data of Cloud Servers
- Draining a Node
- Deleting or Unsubscribing from a Node
- Changing the Billing Mode of a Node to Yearly/Monthly
- Modifying the Auto-Renewal Configuration of a Yearly/Monthly Node
- Stopping a Node
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Node O&M
- Node Resource Reservation Policy
- Space Allocation of a Data Disk
- Maximum Number of Pods That Can Be Created on a Node
- Differences in kubelet and Runtime Component Configurations Between CCE and the Native Community
- Migrating Nodes from Docker to containerd
- Optimizing Node System Parameters
- Configuring Node Fault Detection Policies
- Node Pools
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Workloads
- Overview
- Creating a Workload
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Configuring a Workload
- Configuring Time Zone Synchronization
- Configuring an Image Pull Policy
- Using Third-Party Images
- Configuring Container Specifications
- Configuring Container Lifecycle Parameters
- Configuring Container Health Check
- Configuring Environment Variables
- Configuring Workload Upgrade Policies
- Configuring Tolerance Policies
- Configuring Labels and Annotations
- Scheduling a Workload
- Logging In to a Container
- Managing Workloads
- Pod Security
- Scheduling
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Network
- Overview
-
Container Network
- Overview
-
Cloud Native Network 2.0 Settings
- Cloud Native 2.0 Network Model
- Configuring Pod Subnets of a Cluster
- Binding a Security Group to a Workload Using a Security Group Policy
- Binding a Subnet and Security Group to a Namespace or Workload Using a Container Network Configuration
- Configuring Shared Bandwidth for a Pod with IPv6 Dual-Stack ENIs
- VPC Network Settings
- Tunnel Network Settings
- Pod Network Settings
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Service
- Overview
- ClusterIP
- NodePort
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LoadBalancer
- Creating a LoadBalancer Service
- Configuring LoadBalancer Services Using Annotations
- Configuring HTTP/HTTPS for a LoadBalancer Service
- Configuring SNI for a LoadBalancer Service
- Configuring HTTP/2 for a LoadBalancer Service
- Configuring Timeout for a LoadBalancer Service
- Configuring Health Check on Multiple Ports of a LoadBalancer Service
- Configuring Passthrough Networking for a LoadBalancer Service
- Setting the Pod Ready Status Through the ELB Health Check
- Headless Services
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Ingresses
- Overview
-
LoadBalancer Ingresses
- Creating a LoadBalancer Ingress on the Console
- Creating a LoadBalancer Ingress Using kubectl
- Annotations for Configuring LoadBalancer Ingresses
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Advanced Setting Examples of LoadBalancer Ingresses
- Configuring an HTTPS Certificate for a LoadBalancer Ingress
- Configuring SNI for a LoadBalancer Ingress
- Configuring Multiple Forwarding Policies for a LoadBalancer Ingress
- Configuring HTTP/2 for a LoadBalancer Ingress
- Configuring HTTPS Backend Services for a LoadBalancer Ingress
- Configuring Timeout for a LoadBalancer Ingress
- Configuring a Slow Start for a LoadBalancer Ingress
- Configuring a Range of Listening Ports for a LoadBalancer Ingress
- Nginx Ingresses
- DNS
- Configuring Intra-VPC Access
- Accessing the Internet from a Container
- Storage
- Observability
- Auto Scaling
- Namespaces
- ConfigMaps and Secrets
- Add-ons
- Helm Chart
- Permissions
- Settings
-
Old Console
- What Is Cloud Container Engine?
- High-Risk Operations and Solutions
- Clusters
-
Nodes
- Overview
- Buying a Node
- Accepting ECSs as Nodes into a Cluster
- Removing a Node
- Logging In to a Node
- Managing Node Labels
- Synchronizing Node Data
- Configuring Node Scheduling (Tainting)
- Resetting a Node
- Deleting a Node
- Stopping a Node
- Performing Rolling Upgrade for Nodes
- Formula for Calculating the Reserved Resources of a Node
- Creating a Linux LVM Disk Partition for Docker
- Data Disk Space Allocation
- Adding a Second Data Disk to a Node in a CCE Cluster
- Node Pools
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Workloads
- Overview
- Creating a Deployment
- Creating a StatefulSet
- Creating a DaemonSet
- Creating a Job
- Creating a Cron Job
- Managing Pods
- GPU Scheduling
- NPU Scheduling
- Managing Workloads and Jobs
- Scaling a Workload
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Configuring a Container
- Using a Third-Party Image
- Setting Container Specifications
- Setting Container Lifecycle Parameters
- Setting Container Startup Commands
- Setting Health Check for a Container
- Setting an Environment Variable
- Enabling ICMP Security Group Rules
- Configuring an Image Pull Policy
- Configuring Time Zone Synchronization
- DNS Configuration
- Pod Scale-in Priorities
- Configuring QoS Rate Limiting for Inter-Pod Access
- Adding Pod Annotations
- Affinity and Anti-Affinity Scheduling
- Networking
- Storage (CSI)
- Monitoring and Logs
- Namespaces
- Configuration Center
- Charts (Helm)
- Add-ons
- Auto Scaling
- Permissions Management
- Cloud Trace Service (CTS)
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Best Practices
- Checklist for Deploying Containerized Applications in the Cloud
- Containerization
- Migration
- Disaster Recovery
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Security
- Configuration Suggestions on CCE Cluster Security
- Configuration Suggestions on CCE Node Security
- Configuration Suggestions on CCE Container Runtime Security
- Configuration Suggestions on CCE Container Security
- Configuration Suggestions on CCE Container Image Security
- Configuration Suggestions on CCE Secret Security
- Auto Scaling
- Monitoring
- Cluster
- Networking
- Storage
- Container
- Permission
- Release
-
API Reference
- Before You Start
- API Overview
- Calling APIs
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APIs
- API URL
-
Cluster Management
- Creating a Cluster
- Reading a Specified Cluster
- Listing Clusters in a Specified Project
- Updating a Specified Cluster
- Deleting a Cluster
- Hibernating a Cluster
- Waking Up a Cluster
- Obtaining a Cluster Certificate
- Modifying Cluster Specifications
- Querying a Job
- Binding/Unbinding Public API Server Address
- Obtaining Cluster Access Address
- Obtaining a Cluster's Logging Configurations
- Configuring Cluster Logs
- Obtaining the Partition List
- Creating a Partition
- Obtaining Partition Details
- Updating a Partition
- Node Management
- Node Pool Management
- Storage Management
- Add-on Management
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Cluster Upgrade
- Upgrading a Cluster
- Obtaining Cluster Upgrade Task Details
- Retrying a Cluster Upgrade Task
- Suspending a Cluster Upgrade Task (Deprecated)
- Continuing to Execute a Cluster Upgrade Task (Deprecated)
- Obtaining a List of Cluster Upgrade Task Details
- Pre-upgrade Check
- Obtaining Details About a Pre-upgrade Check Task of a Cluster
- Obtaining a List of Pre-upgrade Check Tasks of a Cluster
- Post-upgrade Check
- Cluster Backup
- Obtaining a List of Cluster Backup Task Details
- Obtaining the Cluster Upgrade Information
- Obtaining a Cluster Upgrade Path
- Obtaining the Configuration of Cluster Upgrade Feature Gates
- Enabling the Cluster Upgrade Process Booting Task
- Obtaining a List of Upgrade Workflows
- Obtaining Details About a Specified Cluster Upgrade Task
- Updating the Status of a Specified Cluster Upgrade Booting Task
- Quota Management
- API Versions
- Tag Management
- Configuration Management
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Chart Management
- Uploading a Chart
- Obtaining a Chart List
- Obtaining a Release List
- Updating a Chart
- Creating a Release
- Deleting a Chart
- Updating a Release
- Obtaining a Chart
- Deleting a Release
- Downloading a Chart
- Obtaining a Release
- Obtaining Chart Values
- Obtaining Historical Records of a Release
- Obtaining the Quota of a User Chart
- Kubernetes APIs
- Permissions and Supported Actions
-
Appendix
- Status Code
- Error Codes
- Obtaining a Project ID
- Obtaining an Account ID
- Specifying Add-ons to Be Installed During Cluster Creation
- How to Obtain Parameters in the API URI
- Creating a VPC and Subnet
- Creating a Key Pair
- Node Flavor Description
- Adding a Salt in the password Field When Creating a Node
- Maximum Number of Pods That Can Be Created on a Node
- Node OS
- Data Disk Space Allocation
- Attaching Disks to a Node
- SDK Reference
-
FAQs
- Common FAQ
- Billing
- Cluster
-
Node
- Node Creation
-
Node Running
- What Should I Do If a Cluster Is Available But Some Nodes Are Unavailable?
- How Do I Log In to a Node Using a Password and Reset the Password?
- How Do I Collect Logs of Nodes in a CCE Cluster?
- What Should I Do If the vdb Disk of a Node Is Damaged and the Node Cannot Be Recovered After Reset?
- What Should I Do If I/O Suspension Occasionally Occurs When SCSI EVS Disks Are Used?
- How Do I Fix an Abnormal Container or Node Due to No Thin Pool Disk Space?
- How Do I Rectify Failures When the NVIDIA Driver Is Used to Start Containers on GPU Nodes?
- Specification Change
- OSs
- Node Pool
-
Workload
-
Workload Exception Troubleshooting
- How Can I Find the Fault for an Abnormal Workload?
- What Should I Do If Pod Scheduling Fails?
- What Should I Do If a Pod Fails to Pull the Image?
- What Should I Do If Container Startup Fails?
- What Should I Do If a Pod Fails to Be Evicted?
- What Should I Do If a Storage Volume Cannot Be Mounted or the Mounting Times Out?
- What Should I Do If a Workload Remains in the Creating State?
- What Should I Do If a Pod Remains in the Terminating State?
- What Should I Do If a Workload Is Stopped Caused by Pod Deletion?
- What Should I Do If an Error Occurs When I Deploy a Service on the GPU Node?
- How Can I Locate Faults Using an Exit Code?
- Container Configuration
- Scheduling Policies
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Others
- What Should I Do If a Cron Job Cannot Be Restarted After Being Stopped for a Period of Time?
- What Is a Headless Service When I Create a StatefulSet?
- What Should I Do If Error Message "Auth is empty" Is Displayed When a Private Image Is Pulled?
- What Is the Image Pull Policy for Containers in a CCE Cluster?
- What Can I Do If a Layer Is Missing During Image Pull?
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Workload Exception Troubleshooting
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Networking
-
Network Exception Troubleshooting
- How Do I Locate a Workload Networking Fault?
- Why Does the Browser Return Error Code 404 When I Access a Deployed Application?
- What Should I Do If a Container Fails to Access the Internet?
- What Should I Do If a Node Fails to Connect to the Internet (Public Network)?
- What Should I Do If Nginx Ingress Access in the Cluster Is Abnormal After the NGINX Ingress Controller Add-on Is Upgraded?
- What Could Cause Access Exceptions After Configuring an HTTPS Certificate for a LoadBalancer Ingress?
- Network Planning
- Security Hardening
-
Network Configuration
- How Can Container IP Addresses Survive a Container Restart?
- How Can I Check Whether an ENI Is Used by a Cluster?
- How Can I Delete a Security Group Rule Associated with a Deleted Subnet?
- How Can I Synchronize Certificates When Multiple Ingresses in Different Namespaces Share a Listener?
- How Can I Determine Which Ingress the Listener Settings Have Been Applied To?
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Network Exception Troubleshooting
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Storage
- How Do I Expand the Storage Capacity of a Container?
- What Are the Differences Among CCE Storage Classes in Terms of Persistent Storage and Multi-Node Mounting?
- Can I Create a CCE Node Without Adding a Data Disk to the Node?
- What Should I Do If the Host Cannot Be Found When Files Need to Be Uploaded to OBS During the Access to the CCE Service from a Public Network?
- How Can I Achieve Compatibility Between ExtendPathMode and Kubernetes client-go?
- Can CCE PVCs Detect Underlying Storage Faults?
- What Should I Do If a Yearly/Monthly EVS Disk Cannot Be Automatically Created?
- Namespace
-
Chart and Add-on
- What Should I Do If Installation of an Add-on Fails and "The release name is already exist" Is Displayed?
- How Do I Configure the Add-on Resource Quotas Based on Cluster Scale?
- How Can I Clean Up Residual Resources After the NGINX Ingress Controller Add-on in the Unknown State Is Deleted?
- Why TLS v1.0 and v1.1 Cannot Be Used After the NGINX Ingress Controller Add-on Is Upgraded?
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API & kubectl FAQs
- How Can I Access a Cluster API Server?
- Can the Resources Created Using APIs or kubectl Be Displayed on the CCE Console?
- How Do I Download kubeconfig for Connecting to a Cluster Using kubectl?
- How Do I Rectify the Error Reported When Running the kubectl top node Command?
- Why Is "Error from server (Forbidden)" Displayed When I Use kubectl?
- DNS FAQs
- Image Repository FAQs
- Permissions
- Videos
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Help Center/
Cloud Container Engine/
User Guide/
Clusters/
Upgrading a Cluster/
Troubleshooting for Pre-upgrade Check Exceptions/
SSH Connectivity of Master Nodes
SSH Connectivity of Master Nodes
Updated on 2024-11-11 GMT+08:00
Check Items
Check whether your master nodes can be accessed using SSH.
Solution
There is a low probability that the SSH connectivity check fails due to network fluctuations. Perform the pre-upgrade check again.
If the check still fails, submit a service ticket to contact technical support.
Parent Topic: Troubleshooting for Pre-upgrade Check Exceptions
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