一、背景

安装完docker和containerd之后，尝试重启docker的时候，报错如下：

systemctl restart docker

Job for docker.service failed because the control process exited with error code. See “systemctl status docker.service” and “journalctl -xe” for details.

使用"systemctl status docker.service" 查看错误详情：

Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.
[root@emc34 ~]# systemctl status docker.service
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Mon 2023-08-14 09:00:14 CST; 13s ago
     Docs: http://docs.docker.com
  Process: 1866 ExecStart=/usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current --init-path=/usr/libexec/docker/docker-init-current --seccomp-profile=/etc/docker/seccomp.json $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY $REGISTRIES (code=exited, status=1/FAILURE)
 Main PID: 1866 (code=exited, status=1/FAILURE)

Aug 14 09:00:14 emc34 systemd[1]: Starting Docker Application Container Engine...
Aug 14 09:00:14 emc34 dockerd-current[1866]: unable to configure the Docker daemon with file /etc/docker/daemon.json: the following directives ar...son-file)
Aug 14 09:00:14 emc34 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Aug 14 09:00:14 emc34 systemd[1]: Failed to start Docker Application Container Engine.
Aug 14 09:00:14 emc34 systemd[1]: Unit docker.service entered failed state.
Aug 14 09:00:14 emc34 systemd[1]: docker.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

这里给出了错误原因：

Aug 14 09:00:14 emc34 dockerd-current[1866]: unable to configure the Docker daemon with file /etc/docker/daemon.json: the following directives ar…son-file)

虽然/etc/docker/daemon.json文件内容已在多个机器上配置过，但我还是再检查了下json格式是否合法，其次看地址是否能通。

最后简化到最后这个样子，仍旧是重启docker失败。

{
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m",
    "max-file": "3",
    "labels": "production_status",
    "env": "os,customer"
  }
}

排除不是daemon.json的问题，索性我不删除该配置文件，这时候重启docker就成功了。

可还是不知道啥原因。。。

困扰了好久，，，

因为我的机器环境，除了需安装docker外， 还要求docker-compose。

当要安装docker-comose的时候，会要求docker的版本与之匹配才行。

这会发现docker的版本非常低，于是又后文的docker升级。

通过本文，也提醒我们，当出现我这样的低级错误时，检查下自己的docker版本，及时更新版本是你最好的选择！！

二、升级docker

1、删除旧版本

# 停止docker服务
> systemctl stop docker


# 查看当前版本
> rpm -qa | grep docker
docker-compose-plugin-2.20.2-1.el7.x86_64
docker-buildx-plugin-0.11.2-1.el7.x86_64
docker-ce-cli-24.0.5-1.el7.x86_64
docker-ce-24.0.5-1.el7.x86_64
docker-ce-rootless-extras-24.0.5-1.el7.x86_64

#卸载软件包
yum erase docker \
          docker-client \
          docker-client-latest \
          docker-common \
          docker-latest \
          docker-latest-logrotate \
          docker-logrotate \
          docker-selinux \
          docker-engine-selinux \
          docker-engine \
          docker-ce

# 删除相关配置文件
find /etc/systemd -name '*docker*' -exec rm -f {} \;
find /etc/systemd -name '*docker*' -exec rm -f {} \;
find /lib/systemd -name '*docker*' -exec rm -f {} \;

#删除已有的镜像和容器
rm -rf /var/lib/docker
rm -rf /var/run/docker  

2、安装新版本

# 软件包安装
yum install -y yum-utils  device-mapper-persistent-data lvm2

# 添加yum源
yum-config-manager \
--add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo
 
# 安装最新版本
yum install docker-ce -y

• 查看docker版本
  

[root@emc34 opt]# docker version
Client: Docker Engine - Community
 Version:           24.0.5
 API version:       1.43
 Go version:        go1.20.6
 Git commit:        ced0996
 Built:             Fri Jul 21 20:39:02 2023
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          24.0.5
  API version:      1.43 (minimum version 1.12)
  Go version:       go1.20.6
  Git commit:       a61e2b4
  Built:            Fri Jul 21 20:38:05 2023
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.22
  GitCommit:        8165feabfdfe38c65b599c4993d227328c231fca
 runc:
  Version:          1.1.8
  GitCommit:        v1.1.8-0-g82f18fe
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

3、设置docker

• 启动并开机自启

> systemctl start docker

> systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

• 配置/etc/docker/daemon.json

这里就略去。其实就是配置你的私有仓库地址。

三、安装docker-compose

• 参考官网https://docs.docker.com/compose/install/standalone/

[root@emc34 bin]# curl -SL https://github.com/docker/compose/releases/download/v2.20.3/docker-compose-linux-x86_64 -o /usr/local/bin/docker-compose

[root@emc34 bin]# ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

[root@emc34 bin]# docker-compose version
-bash: /usr/local/bin/docker-compose: Permission denied

解决办法：

chmod +x /usr/local/bin/docker-compose

再查看其版本：

[root@emc34 opt]# docker-compose version
Docker Compose version v2.20.3

四、总结

特别想发出一点感想，在没有安装docker-comose前，无论也没想到，daemon.json配置异常竟是因为docker版本过低导致。

本文对安装docker及docker-compose的过程进行了一个记录，希望对你有帮助。