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87 lines
3.2 KiB
Markdown
87 lines
3.2 KiB
Markdown
# Docker Autoheal
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监控并重启不健康的 Docker 容器。此功能曾提议在增加 \``HEALTHCHECK`\` 后包含进来，但最终未能实现。此容器是一个临时替代品，直到有原生支持 \``--exit-on-unhealthy`\`[https://github.com/docker/docker/pull/22719](https://github.com/docker/docker/pull/22719)。
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## 支持的标签和 Dockerfile 链接
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* [`latest` (*Dockerfile*)](https://github.com/willfarrell/docker-autoheal/blob/main/Dockerfile) - 每日构建
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* [`1.1.0` (*Dockerfile*)](https://github.com/willfarrell/docker-autoheal/blob/1.1.0/Dockerfile)
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* [`v0.7.0` (*Dockerfile*)](https://github.com/willfarrell/docker-autoheal/blob/v0.7.0/Dockerfile)
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 [](http://microbadger.com/images/willfarrell/autoheal "Docker layer breakdown")
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## 如何使用
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### UNIX 套接字透传
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```bash
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docker run -d \
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--name autoheal \
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--restart=always \
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-e AUTOHEAL_CONTAINER_LABEL=all \
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-v /var/run/docker.sock:/var/run/docker.sock \
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willfarrell/autoheal
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```
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### TCP socket
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```bash
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docker run -d \
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--name autoheal \
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--restart=always \
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-e AUTOHEAL_CONTAINER_LABEL=all \
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-e DOCKER_SOCK=tcp://HOST:PORT \
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-v /path/to/certs/:/certs/:ro \
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willfarrell/autoheal
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```
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a) 在你的容器上应用标签 \``autoheal=true`\` 以使其被监控。
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b) 设置环境变量 \``AUTOHEAL_CONTAINER_LABEL=all`\` 以监控所有运行中的容器。
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c) 设置环境变量 \``AUTOHEAL_CONTAINER_LABEL`\` 为具有值 \``true`\` 的现有标签名称。
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注意：您必须首先将 `HEALTHCHECK` 应用于您的 Docker 镜像。详情请参阅 [https://docs.docker.com/engine/reference/builder/#healthcheck](https://docs.docker.com/engine/reference/builder/#healthcheck)。有关如何使用 mTLS 配置 TCP，请参阅 [https://docs.docker.com/engine/security/https/](https://docs.docker.com/engine/security/https/)。
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证书和密钥需要以下名称：
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* ca.pem
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* client-cert.pem
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* client-key.pem
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### 更改时区
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如果需要时区与本地机器一致，可以将 `/etc/localtime` 映射到容器中。
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```
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docker run ... -v /etc/localtime:/etc/localtime:ro
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```
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## ENV 默认设置
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```
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AUTOHEAL_CONTAINER_LABEL=autoheal
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AUTOHEAL_INTERVAL=5 # check every 5 seconds
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AUTOHEAL_START_PERIOD=0 # wait 0 seconds before first health check
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AUTOHEAL_DEFAULT_STOP_TIMEOUT=10 # Docker waits max 10 seconds (the Docker default) for a container to stop before killing during restarts (container overridable via label, see below)
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DOCKER_SOCK=/var/run/docker.sock # Unix socket for curl requests to Docker API
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CURL_TIMEOUT=30 # --max-time seconds for curl requests to Docker API
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WEBHOOK_URL="" # post message to the webhook if a container was restarted (or restart failed)
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```
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### 可选容器标签
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```
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autoheal.stop.timeout=20 # Per containers override for stop timeout seconds during restart
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```
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## 测试
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```bash
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docker build -t autoheal .
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docker run -d \
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-e AUTOHEAL_CONTAINER_LABEL=all \
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-v /var/run/docker.sock:/var/run/docker.sock \
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autoheal
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``` |