- What's New
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Product Bulletin
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Vulnerability Notices
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- Notice of Container Escape Vulnerability in NVIDIA Container Toolkit (CVE-2024-0132)
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- Notice of the NGINX Ingress Controller Vulnerability That Allows Attackers to Bypass Annotation Validation (CVE-2024-7646)
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- Notice of runC systemd Attribute Injection Vulnerability (CVE-2024-3154)
- Notice of the Impact of runC Vulnerability (CVE-2024-21626)
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- 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
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Kubernetes Version Release Notes
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Add-on Versions
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Cluster Versions
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User Guide
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Clusters
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Cluster Overview
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Kubernetes Version Release Notes
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- Patch Version Release Notes
- Buying a Cluster
- Connecting to a Cluster
-
Managing a Cluster
- Modifying Cluster Configurations
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-
Upgrading a Cluster
- Process and Method of Upgrading a Cluster
- Before You Start
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Troubleshooting for Pre-upgrade Check Exceptions
- Pre-upgrade Check
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-
Cluster Overview
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Nodes
- Node Overview
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Management Nodes
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- Modifying the Auto-Renewal Configuration of a Yearly/Monthly Node
- Stopping a Node
-
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
-
Workloads
- Overview
- Creating a Workload
-
Configuring a Workload
- Configuring Time Zone Synchronization
- Configuring an Image Pull Policy
- Using Third-Party Images
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- Configuring Container Lifecycle Parameters
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- Logging In to a Container
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- Scheduling
-
Network
- Overview
-
Container Network
- Overview
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Cloud Native Network 2.0 Settings
- Cloud Native 2.0 Network Model
- Configuring Pod Subnets of a Cluster
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-
Service
- Overview
- ClusterIP
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LoadBalancer
- Creating a LoadBalancer Service
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- Configuring Passthrough Networking for a LoadBalancer Service
- Setting the Pod Ready Status Through the ELB Health Check
- Headless Services
-
Ingresses
- Overview
-
LoadBalancer Ingresses
- Creating a LoadBalancer Ingress on the Console
- Creating a LoadBalancer Ingress Using kubectl
- Annotations for Configuring LoadBalancer Ingresses
-
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
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-
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
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- 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
-
Workloads
- Overview
- Creating a Deployment
- Creating a StatefulSet
- Creating a DaemonSet
- Creating a Job
- Creating a Cron Job
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- GPU Scheduling
- NPU Scheduling
- Managing Workloads and Jobs
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-
Configuring a Container
- Using a Third-Party Image
- Setting Container Specifications
- Setting Container Lifecycle Parameters
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- Setting Health Check for a Container
- Setting an Environment Variable
- Enabling ICMP Security Group Rules
- Configuring an Image Pull Policy
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- DNS Configuration
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- Adding Pod Annotations
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- Cloud Trace Service (CTS)
-
Best Practices
- Checklist for Deploying Containerized Applications in the Cloud
- Containerization
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-
Security
- Configuration Suggestions on CCE Cluster Security
- Configuration Suggestions on CCE Node Security
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- Auto Scaling
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- Permission
- Release
-
API Reference
- Before You Start
- API Overview
- Calling APIs
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APIs
- API URL
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Cluster Management
- Creating a Cluster
- Reading a Specified Cluster
- Listing Clusters in a Specified Project
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- Waking Up a Cluster
- Obtaining a Cluster Certificate
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- Querying a Job
- Binding/Unbinding Public API Server Address
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- Configuring Cluster Logs
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- Creating a Partition
- Obtaining Partition Details
- Updating a Partition
- Node Management
- Node Pool Management
- Storage Management
- Add-on Management
-
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
-
Chart Management
- Uploading a Chart
- Obtaining a Chart List
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- 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
-
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?
-
Workload Exception Troubleshooting
-
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?
-
Network Exception Troubleshooting
-
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?
-
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
Kubernetes Metrics Server
From version 1.8 onwards, Kubernetes provides resource usage metrics, such as the container CPU and memory usage, through the Metrics API. These metrics can be directly accessed by users (for example, by using the kubectl top command) or used by controllers (for example, Horizontal Pod Autoscaler) in a cluster for decision-making. The specific component is metrics-server, which is used to substitute for heapster for providing the similar functions. heapster has been gradually abandoned since v1.11.
metrics-server is an aggregator for monitoring data of core cluster resources. You can quickly install this add-on on the CCE console.
After installing this add-on, you can create HPA policies. For details, see Creating an HPA Policy.
The official community project and documentation are available at https://github.com/kubernetes-sigs/metrics-server.
Installing the Add-on
- Log in to the CCE console and click the cluster name to access the cluster console. In the navigation pane, choose Add-ons, locate Kubernetes Metrics Server on the right, and click Install.
- On the Install Add-on page, configure the specifications as needed.
- If you selected Preset, you can choose between Small or Large as needed. The system will automatically set the number of add-on pods and resource quotas according to the preset specifications. You can see the configurations on the console.
The smaller specification lacks HA capabilities, while the large specification has them. However, deploying multiple pods requires more compute resources.
- If you selected Custom, you can adjust the number of pods and resource quotas as needed. High availability is not possible with a single pod. If an error occurs on the node where the add-on instance runs, the add-on will fail.
- If you selected Preset, you can choose between Small or Large as needed. The system will automatically set the number of add-on pods and resource quotas according to the preset specifications. You can see the configurations on the console.
- Configure deployment policies for the add-on pods.
NOTE:
- Scheduling policies do not take effect on add-on instances of the DaemonSet type.
- When configuring multi-AZ deployment or node affinity, ensure that there are nodes meeting the scheduling policy and that resources are sufficient in the cluster. Otherwise, the add-on cannot run.
Table 1 Configurations for add-on scheduling Parameter
Description
Multi AZ
- Preferred: Deployment pods of the add-on will be preferentially scheduled to nodes in different AZs. If all the nodes in the cluster are deployed in the same AZ, the pods will be scheduled to different nodes in that AZ.
- Equivalent mode: Deployment pods of the add-on are evenly scheduled to the nodes in the cluster in each AZ. If a new AZ is added, you are advised to increase add-on pods for cross-AZ HA deployment. With the Equivalent multi-AZ deployment, the difference between the number of add-on pods in different AZs will be less than or equal to 1. If resources in one of the AZs are insufficient, pods cannot be scheduled to that AZ.
- Required: Deployment pods of the add-on are forcibly scheduled to nodes in different AZs. There can be at most one pod in each AZ. If nodes in a cluster are not in different AZs, some add-on pods cannot run properly. If a node is faulty, add-on pods on it may fail to be migrated.
Node Affinity
- Not configured: Node affinity is disabled for the add-on.
- Node Affinity: Specify the nodes where the add-on is deployed. If you do not specify the nodes, the add-on will be randomly scheduled based on the default cluster scheduling policy.
- Specified Node Pool Scheduling: Specify the node pool where the add-on is deployed. If you do not specify the node pool, the add-on will be randomly scheduled based on the default cluster scheduling policy.
- Custom Policies: Enter the labels of the nodes where the add-on is to be deployed for more flexible scheduling policies. If you do not specify node labels, the add-on will be randomly scheduled based on the default cluster scheduling policy.
If multiple custom affinity policies are configured, ensure that there are nodes that meet all the affinity policies in the cluster. Otherwise, the add-on cannot run.
Toleration
Using both taints and tolerations allows (not forcibly) the add-on Deployment to be scheduled to a node with the matching taints, and controls the Deployment eviction policies after the node where the Deployment is located is tainted.
The add-on adds the default tolerance policy for the node.kubernetes.io/not-ready and node.kubernetes.io/unreachable taints, respectively. The tolerance time window is 60s.
For details, see Configuring Tolerance Policies.
- Click Install.
Components
Component |
Description |
Resource Type |
---|---|---|
metrics-server |
Aggregator for the monitored data of cluster core resources, which is used to collect and aggregate resource usage metrics obtained through the Metrics API in the cluster |
Deployment |
Change History
Add-on Version |
Supported Cluster Version |
New Feature |
Community Version |
---|---|---|---|
1.3.60 |
v1.21 v1.23 v1.25 v1.27 v1.28 v1.29 |
CCE clusters 1.29 are supported. |
|
1.3.37 |
v1.21 v1.23 v1.25 v1.27 v1.28 |
CCE clusters 1.28 are supported. |
|
1.3.12 |
v1.19 v1.21 v1.23 v1.25 v1.27 |
None |
|
1.3.8 |
v1.19 v1.21 v1.23 v1.25 |
Synchronized time zones used by the add-on and the node. |
|
1.3.6 |
v1.19 v1.21 v1.23 v1.25 |
|
|
1.3.3 |
v1.19 v1.21 v1.23 v1.25 |
|
|
1.3.2 |
v1.19 v1.21 v1.23 v1.25 |
CCE clusters 1.25 are supported. |
|
1.2.1 |
v1.19 v1.21 v1.23 |
CCE clusters 1.23 are supported. |
|
1.1.10 |
v1.15 v1.17 v1.19 v1.21 |
CCE clusters 1.21 are supported. |
|
1.1.4 |
v1.15 v1.17 v1.19 |
Unified resource specification configuration unit. |
|
1.1.2 |
v1.15 v1.17 v1.19 |
Updated the add-on to its community version v0.4.4. |
|
1.1.1 |
v1.13 v1.15 v1.17 v1.19 |
Allows you to change the maximum number of invalid pods to 1. |
|
1.1.0 |
v1.13 v1.15 v1.17 v1.19 |
CCE clusters 1.19 are supported. |
|
1.0.5 |
v1.13 v1.15 v1.17 |
Updated the add-on to its community version v0.3.7. |
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