Bu sayfa henüz yerel dilinizde mevcut değildir. Daha fazla dil seçeneği eklemek için yoğun bir şekilde çalışıyoruz. Desteğiniz için teşekkür ederiz.

Easily Switch Between Product Types

You can click the drop-down list box to switch between different product types.

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
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
Situation Awareness
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
Help Center/ Cloud Container Engine/ FAQs/ Networking/ Network Exception Troubleshooting/ Why Does a Panic Occasionally Occur When I Use Network Policies on a Cluster Node?

Why Does a Panic Occasionally Occur When I Use Network Policies on a Cluster Node?

Updated on 2024-11-13 GMT+08:00

Scenario

Cluster version: v1.15.6-r1

Cluster type: CCE cluster

Network model: Container tunnel network

Node operating system: CentOS 7.6

After a network policy is configured for the cluster, the canal-agent network component on the node is incompatible with the CentOS 7.6 kernel. As a result, a kernel panic may occur.

Conditions

If any of the following conditions is not met, this issue will not occur:

  • The cluster version is v1.15.6-r1 and the container tunnel network model is used.
  • The CentOS 7.6 node uses the canal-agent component whose version is 1.0.RC10.1230.B005 or earlier. (CentOS 7.6 nodes created on or before February 23, 2021 use such component.)
  • You plan to use or have used network policies.

Fault Locating

Quick locating (for pay-per-use nodes)

Check whether your CentOS 7.6 node was created after February 24, 2021 on the CCE console.

Accurate locating (General)

If the cluster version is v1.15.6-r1, the network model is container tunnel network, the node OS is CentOS 7.6, and the canal-agent component version is 1.0.RC10.1230.B005.sp1 or later, the problem will not occur. If an earlier version is used (for example, 1.0.RC10.1230.B002), you are advised to reset or delete the node before configuring network policies.

Perform the following steps to query the version of the network component on the node:

  1. Prepare a node where kubectl can be used.
  2. Run the following command to query the CentOS node list:

    for node_item in $(kubectl get nodes --no-headers | awk '{print $1}') ; do kubectl get node ${node_item} -o yaml | grep CentOS >/dev/null; if [[ "$?" == "0" ]];then echo "${node_item} is CentOS node";fi;done

    The command output is as follows:

  3. Assume that the IP address of the target CentOS node is 10.0.50.187. Run the following command to check the canal-agent version:

    kubectl get packageversions.version.cce.io 10.0.50.187 -o yaml | grep -A 1 canal-agent

    The command output is as follows:

Solution

If you still want to use the node, reset the CentOS 7.6 nodes in the cluster to upgrade the networking components to the latest version. For details, see Resetting a Node.

If you want to delete the risky node and purchase a new one, see Deleting a Node and Buying a Node.

Sitemizi ve deneyiminizi iyileştirmek için çerezleri kullanırız. Sitemizde tarama yapmaya devam ederek çerez politikamızı kabul etmiş olursunuz. Daha fazla bilgi edinin

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback