🗃️Usage Notes :: Ay Docs

Application

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有状态or无状态应用

AI

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Content ClaudeCode Linux Windows OpenCode OpenCode + GPT OpenCode + MiniMax OpenCode + Sonset

Building Tool

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Maven Gradle

CICD

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Articles FAQ ArgoCD sync 报 ‘context deadline exceeded’ 现象：argocd app sync 一直卡住，最终报 context deadline exceeded。原因：ArgoCD repo server git clone 超时（国内网络访问 GitHub 慢）。解法：配置 GitHub 代理加速： kubectl -n argocd exec deploy/argo-cd-argocd-repo-server -- sh -c ' cat > /tmp/gitconfig << "EOF" [url “https://ghfast.top/https://github.com/”] insteadOf = https://github.com/ [http] postBuffer = 2g version = HTTP/1.1 lowSpeedLimit = 0 lowSpeedTime = 999 [core] deltaBaseCacheLimit = 1g EOF'

Container

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Articles Build Smaller Image Network Mode Container Principle FQA Q1: difference between docker\podmn\buildah You can add standard markdown syntax: multiple paragraphs bullet point lists emphasized, bold and even bold emphasized text links etc. ...and even source code the possibilities are endless (almost - including other shortcodes may or may not work)

Database

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Elastic Search DSL FAQ Redis 连接报 ‘Connection refused’ 排查步骤：确认 Redis pod 在运行： kubectl -n storage get pods -l app.kubernetes.io/instance=redis-shared 确认 Service 端点正常： kubectl -n storage get endpoints redis-shared-master 从客户端 pod 内测试连通： kubectl exec -it -- redis-cli -h redis-shared-master.storage -a ping 如果外部应用连不上，确认使用的是正确的 namespace： redis-shared-master.storage.svc.cluster.local:6379 如果密码不对，从 secret 获取： kubectl -n storage get secret redis-shared-credentials -o jsonpath='{.data.redis-password}' | base64 -d PostgreSQL 连接报 ‘password authentication failed’ 确认密码 secret 存在：

Git

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Articles FAQ GitHub push 报 ‘Permission denied (publickey)’ 原因：本地 SSH key 未注册到 GitHub。解法： # 1. 查看本地公钥 cat ~/.ssh/id_ed25519.pub # 2. 复制到 GitHub → Settings → SSH and GPG keys → New SSH key # 3. 测试连接 ssh -T git@github.com GitHub Deploy Key 是什么？怎么用？ Deploy Key 是绑定到单个仓库的 SSH key，只对该仓库有读写权限。生成： ssh-keygen -t ed25519 -f opencode-deploy-key -C "my-repo-deploy" 配置：

HPC

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K8s

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K8s的理解 Cgroup在K8S中起什么作用 Headless VS ClusterIP Creating A Pod Deleting A Pod Deployment VS ReplicaSet Endpoint VS EndpointSlice ETCD如何调优 Flannel VS Calico Headless Service VS ClusterIP Helm Principle HPA More than 1k Nodes Network Policy Node NotReady Pause 容器 Pod在K8S中DNS解析流程和顺序当执行kubectl exec 命令时，发生了什么？ QoS 详解 Scheduler 服务发现 Service VS Endpoint StatefulSet StatefulSet 2 Talk between 2 pods in different nodes Talk with API Server

Monitor

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FAQ Homepage 页面空白或加载不出内容排查步骤：检查 pod 是否运行： kubectl -n monitor get pods -l app.kubernetes.io/name=homepage 检查 ConfigMap 是否更新（Homepage 配置热加载依赖 Reloader annotation）： kubectl -n monitor get configmap homepage -o yaml | head -20 查看 Homepage 容器日志： kubectl -n monitor logs -l app.kubernetes.io/name=homepage 如果修改了 services.yaml 或 bookmarks.yaml，需要触发 pod 重启： kubectl -n monitor rollout restart deploy/homepage Uptime Kuma 监控页面打不开排查步骤：

Networking

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Ingress Nginx 性能优化 Traefik VS Nginx

RPC

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Storage

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User Based Policy

Mirrors

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Gradle Tencent Mirror https://mirrors.cloud.tencent.com/gradle/gradle-8.0-bin.zip PIP Tuna Mirror -i https://pypi.tuna.tsinghua.edu.cn/simple pip install -i https://pypi.tuna.tsinghua.edu.cn/simple some-package Maven Mirror aliyunmaven * 阿里云公共仓库 https://maven.aliyun.com/repository/public