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Docker/Docs/Docker配置2375端口.md
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Docker/Docs/Docker配置2375端口.md
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> 本文作者:丁辉
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# Docker配置2375端口
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## 方法一
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1. 配置 `/etc/docker/daemon.json` 文件
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```bash
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vi /etc/docker/daemon.json
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```
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内容如下
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```json
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{
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"hosts": ["tcp://0.0.0.0:2375", "unix:///var/run/docker.sock"]
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}
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```
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2. 重载并重启 Docker
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```bash
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systemctl daemon-reload
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systemctl restart docker
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```
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## 方法二
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1. 修改 `/usr/lib/systemd/system/docker.service` 文件
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```bash
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vi /usr/lib/systemd/system/docker.service
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```
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- 旧版 Docker
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```bash
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ExecStart=/usr/local/bin/dockerd -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock
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```
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- 新版 Docker
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```bash
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ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H fd:// --containerd=/run/containerd/containerd.sock
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```
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2. 重载并重启 Docker
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```bash
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systemctl daemon-reload
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systemctl restart docker
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```
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## 验证
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- 查看端口是否启动
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```bash
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netstat -anput | grep 2375
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```
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- 测试
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```bash
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docker -H tcp://192.168.1.10:2375 ps
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```
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# 配置证书访问
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1. 可以使用本脚本生成证书
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```bash
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curl -Os https://gitee.com/offends/Linux/raw/main/File/Shell/openssl-cert.sh && chmod 777 ./openssl-cert.sh
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```
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> 修改
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>
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> ```bash
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> IP="127.0.0.1" # 本地 IP 地址
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> PASSWORD="123456" # 证书密码
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> VALIDITY_PERIOD=3650 # 证书有效时间
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> ```
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2. 执行脚本
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```bash
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./openssl-cert.sh
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```
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3. 修改 `/usr/lib/systemd/system/docker.service` 文件
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```bash
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vi /usr/lib/systemd/system/docker.service
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```
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- 旧版 Docker
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```bash
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ExecStart=/usr/bin/dockerd --tlsverify --tlscacert=/etc/docker/cert/2375/ca.pem --tlscert=/etc/docker/cert/2375/server-cert.pem --tlskey=/etc/docker/cert/2375/server-key.pem -H unix:///var/run/docker.sock
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```
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- 新版 Docker
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```bash
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ExecStart=/usr/bin/dockerd --tlsverify --tlscacert=/etc/docker/cert/2375/ca.pem --tlscert=/etc/docker/cert/2375/server-cert.pem --tlskey=/etc/docker/cert/2375/server-key.pem -H tcp://0.0.0.0:2375 -H fd:// --containerd=/run/containerd/containerd.sock
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```
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4. 重载并重启 Docker
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```bash
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systemctl daemon-reload
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systemctl restart docker
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```
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5. 验证
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```bash
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docker --tlsverify --tlscacert=/etc/docker/cert/2375/ca.pem --tlscert=/etc/docker/cert/2375/server-cert.pem --tlskey=/etc/docker/cert/2375/server-key.pem -H tcp://192.168.1.10:2375 ps
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```
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# 问题记录
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> [方法一] 由于 Docker 在最近新版更换了容器引擎为 Containerd, daemon.json 文件如果配置原来的通信套接字文件路径是不行的,现在也没有更好的解决方案,本次我就记录一下从老外那里学来的方法。
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>
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> 嗯......为什么说这个方案也不是很对呢,因为他会替换你的 Docker 启动命令,那为什么不直接改 `docker.service` 呢?反正咱只是记录一下,通过修改 docker.service 方法我也放在 [方法二] 里了你们自己看吧
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1. 配置 `/etc/docker/daemon.json` 文件
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```bash
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vi /etc/docker/daemon.json
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```
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内容如下
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```json
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{
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"hosts": ["tcp://0.0.0.0:2375", "unix:///var/run/docker.sock"]
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}
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```
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2. 创建 `override.conf` 文件
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```bash
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mkdir -p /etc/systemd/system/docker.service.d/
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vi /etc/systemd/system/docker.service.d/override.conf
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```
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文件内容为
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```bash
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[Service]
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ExecStart=
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ExecStart=/usr/bin/dockerd --config-file /etc/docker/daemon.json
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```
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3. 重载并重启 Docker
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```bash
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systemctl daemon-reload
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systemctl restart docker
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```
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