docker的基本安装

参考安装地址连接

卸载旧版本

$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

安装 Docker Engine-Community

安装yum的基本软件

$ sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2

设置阿里云仓库源地址

$ sudo yum-config-manager \
    --add-repo \
    http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

安装docker引擎

安装最新版本的 Docker Engine-Community 和 containerd，或者转到下一步安装特定版本：

$ sudo yum install docker-ce docker-ce-cli containerd.io

安装特定版本的docker

$ yum list docker-ce --showduplicates | sort -r

docker-ce.x86_64  3:18.09.1-3.el7                     docker-ce-stable
docker-ce.x86_64  3:18.09.0-3.el7                     docker-ce-stable
docker-ce.x86_64  18.06.1.ce-3.el7                    docker-ce-stable
docker-ce.x86_64  18.06.0.ce-3.el7                    docker-ce-stable

这个是指定特定版本的docker的安装

sudo yum install docker-ce-19.03.9 docker-ce-cli-19.03.9 containerd.io

docker的基本操作

启动docker并查看版本号

$ sudo systemctl start docker

docker version

验证安装docker正确

[root@localhost ~]# docker run hello-world

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

容器相关命令

容器查看列表正在运行

docker ps

[root@localhost ~]# docker ps
CONTAINER ID        IMAGE                       COMMAND                  CREATED             STATUS              PORTS                    NAMES
7765f5165e4b        enmotech/opengauss:latest   "entrypoint.sh gauss…"   26 minutes ago      Up 26 minutes       0.0.0.0:5432->5432/tcp   opengauss

容器查看列表所有(包括未运行信息)

docker ps -a

容器查看详情

docker inspect xxxedc27c2341bxxx

容器删除

docker rm xxx容器IDxxx

容器启动

• 容器的创建及启动

docker run --name opengauss --privileged=true -d -e GS_PASSWORD=secretpassword@123 -p 5432:5432 enmotech/opengauss:latest

其中
-p 5432:5432 理解为 前面是对应的宿主机端口号,后面对应的是容器的版本号

• 单纯的容器的启动

docker restart 7765f5165e4b(容器ID)

• 持久化存储数据的启动

docker run --name opengauss --privileged=true -d -e GS_PASSWORD=secretpassword@123 -p 5432:5432  \
    -v /enmotech/opengauss:/var/lib/opengauss \
    enmotech/opengauss:latest

实际应用

openGauss的安装

首先要安装好docker软件

• pull docker文件

docker pull enmotech/opengauss

• 启动openGuass实例

$ docker run --name opengauss --privileged=true -d -e GS_PASSWORD=secretpassword@123 -p 5432:5432 enmotech/opengauss:latest

openGauss的用户创建与授权

https://www.modb.pro/db/27572