docker: Error response from daemon: cannot share the host's network namespace when user namespaces are enabled

[AnitaLiu98]

描述问题 ubuntu:20.04 不开启docker可以正常运行，但是因为要用到python，所以希望在docker里运行，这样更安全。

执行bash docker.sh之后报错： docker: Error response from daemon: cannot share the host's network namespace when user namespaces are enabled. See 'docker run --help'.

systemctl restart docker： System has not been booted with systemd as init system (PID 1). Can't operate. Failed to connect to bus: Host is down

service docker status： docker: unrecognized service

似乎无法重启docker

[AnitaLiu98]

执行dockerd --bip 192.168.0.1/24 结果如下： INFO[2024-03-06T15:55:06.700780034Z] Starting up
failed to load listeners: can't create unix socket /var/run/docker.sock: device or resource busy

执行dockerd --bip 192.168.0.1/24 -H unix:///var/run/custom_docker.sock 结果如下： ......略...... INFO[2024-03-06T15:55:49.799120169Z] containerd successfully booted in 0.013468s
INFO[2024-03-06T15:55:49.810807811Z] stopping healthcheck following graceful shutdown module=libcontainerd INFO[2024-03-06T15:55:49.810835565Z] stopping event stream following graceful shutdown error="context canceled" module=libcontainerd namespace=plugins.moby failed to start daemon: Devices cgroup isn't mounted failed to start daemon: Devices cgroup isn't mounted

[zhblue]

20.04 的仓库里所带的docker版本已经比较老，建议尝试搜索“Ubuntu 安装最新版docker”

[AnitaLiu98]

感谢，安装了最新版本但还是会遇到一些问题，暂时先用非docker环境跑了。 另外想问一下，如果不用docker，把python_free设成0，是不是python就无法判题了？

[zhblue]

是，建议手动替换更新最新版install目录的Dockerfile和docker.sh这两个文件，再试试。