docker restart strategy + run container common parameters
restart strategy
container runctime is responsible for the life cycle management of the container
OCI : (open container initiative) open source container protocol,
Contains two specifications: run specification (runctime spec) - container status, creation, deletion, view definition
image-spec - how to create an OCI runtime system package
CRI (container run interface) container running interface
It separates the differences between various container engines, and introduces the pod concept of k8s through a unified interface as the underlying runtime.
no : When the docker service is restarted, the container will not be started. This is the default policy.
docker container run -itd --restart no alpine:latest
systemctl restart docker
always : When the docker service is restarted, the container will start accordingly.
docker container run -itd --restart always alpine:latest
unless-stopped : Always restart the container when the container exits, but does not consider containers that have been stopped when the Docker daemon starts
docker container run -itd --restart unless-stopped alpine:latest
on-failture [:max-retries]: Unexpected exit status will restart the service. You can specify the number of restarts for abnormal exits.
docker container run -itd --restart on-failture:2 alpine:latest
privileged container
Sometimes, the application needs to modify the kernel parameters, but the container does not support modifying the kernel parameters by default. If there is such a need, you need to use a privileged container.
docker container run -itd --privileged alpine:latest
Note: Modifying the kernel parameters of the privileged container can change the kernel parameters of the host machine accordingly, so use it with caution in the production environment.
custom container name
docker container run -itd --name firstcon alpine:latest
When creating, no container name is specified, and it can also be modified with docker container rename
Deleted when the container exits
docker container run -itd --name firstcon --rm alpine:latest
Note: often used for testing
Custom container hostname
docker container run -itdh firstcon alpine:latest
docker container exec -it nginx:latest sh
#hostname
Common parameters
docker run -it nginx:latest /bin/bash
root@b8573233d675:/#
#说明：
docker run：启动一个容器。
-it：以交互模式启动（进入容器中），通常跟解释器一起用
nginx:latest：镜像来源：nginx:latest
/bin/bash：进入容器后要执行的命令，这里是打开终端。
root@b8573233d675:/# ： 已经进入了容器里面的终端，用户名变化。
注意：d 是后台运行，进入容器里面变化的终端是前台运行，
#https://blog.csdn.net/weixin_61015632/article/details/124819196