redhat7 安装 docker

2024-08-26 12:18

文章标签 安装 docker redhat7

本文主要是介绍redhat7 安装 docker，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

安装命令


[root@localhost ~]# cat > /etc/yum.repos.d/docker.repo << EOF
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
[root@localhost ~]# docker pull java
Using default tag: latest
Warning: failed to get default registry endpoint from daemon (Cannot connect to themon at unix:///var/run/docker.sock. Is the docker daemon running?). Using system tps://index.docker.io/v1/
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker ing?
[root@localhost ~]# systemctl start docker.service

常用命令

docker pull


[root@localhost ~]# docker pull  java
Using default tag: latest
latest: Pulling from library/java
5040bd298390: Pull complete
fce5728aad85: Pull complete
76610ec20bf5: Pull complete
60170fec2151: Pull complete
e98f73de8f0d: Pull complete
11f7af24ed9c: Pull complete
49e2d6393f32: Pull complete
bb9cdec9c7f3: Pull complete
Digest: sha256:c1ff613e8ba25833d2e1940da0940c3824f03f802c449f3d1815a66b7f8c0e9d
Status: Downloaded newer image for java:latest

docker images
docker ps
docker ps -a
docker run
1.临时运行，退出控制台就停止


[root@localhost ~]# docker run -it java
root@7e189f686e82:/# psPID TTY          TIME CMD1 ?        00:00:00 bash5 ?        00:00:00 ps
root@7e189f686e82:/# docker-java-home  ps ^C
root@7e189f686e82:/# exit
exit
[root@localhost ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

2.临时查看


[root@localhost ~]# docker run -it java java -version
openjdk version "1.8.0_111"
OpenJDK Runtime Environment (build 1.8.0_111-8u111-b14-2~bpo8+1-b14)
OpenJDK 64-Bit Server VM (build 25.111-b14, mixed mode)[root@localhost ~]# docker run -it java env
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
HOSTNAME=9700976b4087
TERM=xterm
LANG=C.UTF-8
JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
JAVA_VERSION=8u111
JAVA_DEBIAN_VERSION=8u111-b14-2~bpo8+1
CA_CERTIFICATES_JAVA_VERSION=20140324
HOME=/root

docker run [OPTIONS] IMAGE[:TAG] [COMMAND] [ARG…] 决定容器的运行方式，前台执行还是后台执行
docker run后面追加-d=true或者-d，那么容器将会运行在后台模式。 docker exec来进入到到该容器中，或者attach重新连接容器的会话
进行交互式操作（例如Shell脚本），那我们必须使用-i -t参数同容器进行数据交互
docker run时没有指定–name，那么deamon会自动生成一个随机字符串UUID
Docker时有自动化的需求，你可以将containerID输出到指定的文件中（PIDfile）： –cidfile=””
–cidfile=””
Docker的容器是没有特权的，例如不能在容器中再启动一个容器。这是因为默认情况下容器是不能访问任何其它设备的。但是通过”privileged”，容器就拥有了访问任何其它设备的权限。

命令方式传入参数


[root@localhost ~]# docker create --name mysql1 -e MYSQL_ROOT_PASSWORD=123456 -p 3                                                                                   306:3306 mysql
a4d03135f4b3ac0ee76ad4abeb5ed82601b8e5e348325e3ce6bbb73302206340[root@localhost ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS
a4d03135f4b3        mysql               "docker-entrypoint..."   33 seconds ago      Created
b74701291341        mysql               "docker-entrypoint..."   4 minutes ago       Exited (0) 4 minut
adb0e13259c5        java                "java -version"          17 minutes ago      Exited (0) 17 minu
[root@localhost ~]# docker start mysql1

最后参数显示在环境变量中：

[root@localhost ~]# docker exec mysql1 env
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
HOSTNAME=a4d03135f4b3
MYSQL_ROOT_PASSWORD=123456
GOSU_VERSION=1.7
MYSQL_MAJOR=8.0
MYSQL_VERSION=8.0.11-1debian9
HOME=/root