docker daemon OCI故障

故障现象

Docker daemon oci 故障，日志报 docker: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "process_linux.go:301: running exec setns process for init caused “exit status 40"”: unknown.

解决方法

# 清理缓存
$ echo 1 > /proc/sys/vm/drop_caches

# 永久生效
$ echo “vm.min_free_kbytes=1048576” >> /etc/sysctl.conf
$ sysctl -p

# 重启 docker 服务，让 docker 应用内核设置
$ systemctl restart docker