1、 Docker daemon 启动失败
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| # 检查Docker服务状态 systemctl status docker # 查看启动日志定位错误 journalctl -u docker -f cat /var/log/docker.log | grep -i "error\|fatal" # 检查Docker daemon配置 cat /etc/docker/daemon.json # 验证配置文件语法 docker info # 若配置错误会显示具体问题 # 常见配置错误修复： # 1. JSON格式错误（缺少逗号、引号不匹配） # 2. 存储驱动配置冲突 # 3. 端口或目录权限问题 # 4. 网络配置错误 # 尝试使用默认配置启动 mv /etc/docker/daemon.json /etc/docker/daemon.json.bak systemctl restart docker # 手动启动Docker daemon并调试 dockerd --debug --log-level=debug |
2、 存储驱动问题导致启动失败
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| # 查看存储驱动配置 grep "storage-driver" /etc/docker/daemon.json # 检查文件系统支持 grep -E "ext4|xfs" /proc/filesystems # 验证存储目录 ls -ld /var/lib/docker df -h /var/lib/docker # 更换存储驱动（需清理现有数据） systemctl stop docker rm -rf /var/lib/docker/* 修改 /etc/docker/daemon.json { ...... "storage-driver": "overlay2" } systemctl start docker |
3、权限与目录访问问题
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| # 检查Docker相关目录权限 ls -ld /var/lib/docker /var/run/docker.sock chown -R root:docker /var/lib/docker chmod 660 /var/run/docker.sock # 验证当前用户是否在docker组 groups USER # 若不在，添加用户到docker组 usermod -aG docker USER newgrp docker # 立即生效 # SELinux/AppArmor问题排查 ausearch -m avc -ts recent | grep docker # SELinux journalctl -xe | grep apparmor | grep docker # AppArmor # 临时禁用SELinux测试 setenforce 0 systemctl restart docker |