Docker 临时记录

docker save -o <output filename> <image name>
docker load -i <output filename at first step>

docker save <image name> | bzip2 | ssh user@host docker load
docker save <image name> | bzip2 | pv | ssh user@host docker load

进入容器，开启新的终端 docker exec -it id /bin/bash

进入容器，打开正在运行的终端 docker attach id

加载内核 docker run -d --privileged -v /lib/modules:/lib/modules centos:latest bash

  1. Identify the docker container id you want to access and run below command as root on host.

# docker ps 2. Get docker container’s PID:

# pid=$(docker inspect -f '{{.State.Pid}}' ${container_id}) 3. Create netns directory:

# mkdir -p /var/run/netns/ 4. Create the name space softlink:

# ln -sfT /proc/$pid/ns/net /var/run/netns/[container_id] 5. Run ip netns command to access this name space. For example:

# ip netns exec [container_id] ip a

# Add container netns to /var/run/netns so it is detected by ip netns sudo mkdir -p /var/run/netns sudo ln -sf /proc/$pid/ns/net "/var/run/netns/container_name"