1. 在宿主机中查看 docker容器的ip地址
[root@hadoop mydockerbuild]# docker inspect docker_test1 --format '{{.NetworkSettings.IPAddress}}' 172.17.0.2
此处 docker_test1 为docker容器的name
2. 在安装docker的虚拟机上 可以使用 如下命令查看docker的安装版本信息
[root@hadoop mydockerbuild]# docker -v Docker version 1.13.0, build 49bf474
使用这个命令时，不需要docker的守护进程已经启动，但docker的其他命令都需要docker的守护进程启动。
3. 使用docker version查看docker的详细信息
[root@hadoop mydockerbuild]# docker version Client: Version: 1.13.0 API version: 1.25 Go version: go1.7.3 Git commit: 49bf474 Built: Tue Jan 17 09:55:28 2017 OS/Arch: linux/amd64 Server: Version: 1.13.0 API version: 1.25 (minimum version 1.12) Go version: go1.7.3 Git commit: 49bf474 Built: Tue Jan 17 09:55:28 2017 OS/Arch: linux/amd64 Experimental: false
返回的是docker client和docker服务端信息，如果docker的守护进程没有启动，之返回client信息。server信息不会显示，会提示无法连接到 docker daemon。
4. 进入到Container内部：
docker exec -it website /bin/bash
不推荐使用 attach ，使用attach 在退出Container时 Container会挂掉
因为使用的时Centos作为基础镜像，所以进入Container后就有了Centos的所有功能
进入容器后可以使用 supervisorctl查看所有已启动的服务
可以使用exit 退出容器
5.退出docker容器可以使用快捷键 Ctrl+P + Ctrl+Q
[root@hadoop mydockerbuild]# docker exec -it docker_test1 /bin/bash root@test1:/# [root@hadoop mydockerbuild]# [root@hadoop mydockerbuild]#
6.查看docker的状态
[hadoop@hadoop mydockerbuild]$ service docker status Redirecting to /bin/systemctl status docker.service ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled) Active: active (running) since 一 2017-02-27 16:11:47 CST; 1 day 19h ago #状态为 running Docs: https://docs.docker.com Main PID: 27046 (dockerd) Memory: 648.1M CGroup: /system.slice/docker.service ├─ 6530 docker-containerd-shim 8e98459a34fa3d79fcb9124f38c58c72aac... ├─15283 docker-containerd-shim 8e98459a34fa3d79fcb9124f38c58c72aac... ├─15474 docker-containerd-shim 8e98459a34fa3d79fcb9124f38c58c72aac... ├─27046 /usr/bin/dockerd └─27056 docker-containerd -l unix:///var/run/docker/libcontainerd/... [hadoop@hadoop mydockerbuild]$
网上所也可以使用 sudo status docker 查看docker的守护进程是否存在，试了不起作用，可能是因为 在Red Hat和Fedora中。
7. 同样使用service 可以完成docker的启动和停止
停止docker
hadoop@hadoop mydockerbuild]$ sudo service docker stop #停止docker Redirecting to /bin/systemctl stop docker.service [hadoop@hadoop mydockerbuild]$ service docker status #查看docker状态 Redirecting to /bin/systemctl status docker.service ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled) Active: inactive (dead) since 三 2017-03-01 11:21:26 CST; 9s ago #这里Active为 dead Docs: https://docs.docker.com Main PID: 27046 (code=exited, status=0/SUCCESS) [hadoop@hadoop mydockerbuild]$
启动docker 并查看状态
[hadoop@hadoop mydockerbuild]$ service docker start Redirecting to /bin/systemctl start docker.service [hadoop@hadoop mydockerbuild]$ service docker status Redirecting to /bin/systemctl status docker.service ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled) Active: active (running) since 三 2017-03-01 11:24:54 CST; 9s ago Docs: https://docs.docker.com Main PID: 16032 (dockerd) Memory: 21.7M CGroup: /system.slice/docker.service ├─16032 /usr/bin/dockerd └─16042 docker-containerd -l unix:///var/run/docker/libcontainerd/... [hadoop@hadoop mydockerbuild]$
8. 查看docker的环境信息
docker info 此命令需要docker daemon已经启动
[hadoop@hadoop mydockerbuild]$ sudo docker info Containers: 11 Running: 0 Paused: 0 Stopped: 11 Images: 6 Server Version: 1.13.0 Storage Driver: overlay Backing Filesystem: xfs Supports d_type: true Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge host macvlan null overlay Swarm: inactive Runtimes: runc Default Runtime: runc Init Binary: docker-init containerd version: 03e5862ec0d8d3b3f750e19fca3ee367e13c090e runc version: 2f7393a47307a16f8cee44a37b262e8b81021e3e init version: 949e6fa Security Options: seccomp Profile: default Kernel Version: 3.10.0-514.el7.x86_64 Operating System: CentOS Linux 7 (Core) OSType: linux Architecture: x86_64 CPUs: 4 Total Memory: 7.441 GiB Name: hadoop ID: Z2IN:M5GX:54NG:VYBH:MDLI:QIST:SHGB:LZUK:2ZJR:RI3M:P6M5:ZRMK Docker Root Dir: /var/lib/docker Debug Mode (client): false Debug Mode (server): false Registry: https://index.docker.io/v1/ Experimental: false Insecure Registries: 127.0.0.0/8 Live Restore Enabled: false [hadoop@hadoop mydockerbuild]$
9. 查询docker主机上已有的docker镜像
[hadoop@hadoop mydockerbuild]$ sudo docker images REPOSITORY TAG IMAGE ID CREATED SIZE ubuntu latest 0ef2e08ed3fa 31 hours ago 130 MB ubuntu 14.04 7c09e61e9035 31 hours ago 188 MB docker-whale latest 17104b3a899f 42 hours ago 256 MB hello-world latest 48b5124b2768 6 weeks ago 1.84 kB docker/whalesay latest 6b362a9f73eb 21 months ago 247 MB [hadoop@hadoop mydockerbuild]$
本机的所有镜像都保存在 本机的 /var/lib/docker 目录下。
10. 查询docker主机上已经创建的容器
查询所有已启动的容器
[hadoop@hadoop mydockerbuild]$ sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
查询所有的容器，包括启动和未启动的
11. 使用docker search 查找镜像
[hadoop@hadoop mydockerbuild]$ sudo docker search centos NAME DESCRIPTION STARS OFFICIAL AUTOMATED centos The official build of CentOS. 3130 [OK] jdeathe/centos-ssh CentOS-6 6.8 x86_64 / CentOS-7 7.3.1611 x8... 60 [OK] jdeathe/centos-ssh-apache-php CentOS-6 6.8 x86_64 - Apache / PHP-FPM / P... 25 [OK] nimmis/java-centos This is docker images of CentOS 7 with dif... 23 [OK] consol/centos-xfce-vnc Centos container with "headless" VNC sessi... 22 [OK] million12/centos-supervisor Base CentOS-7 with supervisord launcher, h... 13 [OK] nickistre/centos-lamp LAMP on centos setup 10 [OK] torusware/speedus-centos Always updated official CentOS docker imag... 8 [OK] egyptianbman/docker-centos-nginx-php A simple and highly configurable docker co... 6 [OK] nathonfowlie/centos-jre Latest CentOS image with the JRE pre-insta... 5 [OK] centos/mariadb55-centos7 4 [OK] harisekhon/centos-scala Scala + CentOS (OpenJDK tags 2.10-jre7 - 2... 2 [OK] centos/tools Docker image that has systems administrati... 2 [OK] centos/redis Redis built for CentOS 2 [OK] harisekhon/centos-java Java on CentOS (OpenJDK, tags jre/jdk7-8) 2 [OK] freenas/centos Simple CentOS Linux interactive container 1 [OK] darksheer/centos Base Centos Image -- Updated hourly 1 [OK] timhughes/centos Centos with systemd installed and running 1 [OK] blacklabelops/centos CentOS Base Image! Built and Updates Daily! 1 [OK] vcatechnology/centos A CentOS Image which is updated daily 0 [OK] smartentry/centos centos with smartentry 0 [OK] januswel/centos yum update-ed CentOS image 0 [OK] otagoweb/centos Apache (with PHP7), built on CentOS 7 0 [OK] termbox/centos CentOS 0 [OK] repositoryjp/centos Docker Image for CentOS. 0 [OK] [hadoop@hadoop mydockerbuild]$
12.拉取一个镜像
[hadoop@hadoop mydockerbuild]$ sudo docker pull centos:7.1
如果这里不写 :7.1 则会默认拉取最新的镜像
[hadoop@hadoop mydockerbuild]$ sudo docker pull centos Using default tag: latest
这里拉取镜像从Docker Hub 跟网络有关系，如果网络不通畅，有可能拉取不成功。
13.将镜像转载为容器 使用 docker run
有了镜像之后，可以使用 docker run 将镜像变成容器： docker run [-it|-d] -p 2222:22 --name base csphere/centos:7.1 -it 采用交互的方式 -d 把Container在后台启动以后，Container会返回一个ContainerID -P 22 设置这个参数后 表明容器暴露的端口为22 宿主机会随机的找一个没有被使用的 端口号和 22 这个端口进行映射(假如随机2222：22) 即可以在外部直接使用 2222 端口直接访问容器，在宿主机重启后又会找一个随机未被使用的端口号进行映射 -p 2222:22 不管是宿主机重启还是Container重启，这个2222一直会给22端口映射，除非这个Container删掉以后会把这个2222给其他的Container --name 通过docker镜像生成docker 容器，给docker容器起一个名字以方便以后去查找 使用 csphere/centos:7.1 来创建叫做base的docker容器
14. 删除一个容器
[hadoop@hadoop dockerJavaTomcat]$ sudo docker rm /base /base
/base 为容器名称
15. 删除一个镜像 test/centos 为镜像名称
hadoop@hadoop dockerJavaTomcat]$ sudo docker rmi test/centos Untagged: test/centos:latest Deleted: sha256:1c1e0afd4637f9f6d0eeef78b962f553909b656a585451cc72d2b7709a1301b6 Deleted: sha256:3849143870100cd42cbe9c9d7d57b86f770eb1562cba0137a1ccbd125356c6b7 Deleted: sha256:2901facb33c9e596228d32cd3833911d45473ac1b1917d0b67d2feafd9ae8011 Deleted: sha256:de37cfdfa4eb377c944cb94a15474a1c4ab24577d596779e145bdff890e4c376 Deleted: sha256:dffb0316ca99c427eb8e7fcec81b8b8f2f2139e70ffe5b017e535b8c927a3678 Deleted: sha256:bf9b522b6a825775eec04fabc700759394ed7e5ed284bb764df8cbff5da6c3de Deleted: sha256:8d44342286e2f23644f3dd49d35b8f6913720383cbb126def144945859ba415c Deleted: sha256:52fba5ea150c68a6325cb59386678f2a0e5e3f33b3450d15ac55662b19d04cc4 Deleted: sha256:aa497055a9f4f9ca607de6865e47e5c342728bdb7a359a2a3879b9e01e9705f5 Deleted: sha256:12bf021320b738dfab4c1052e508b3cde752af333dd047a503146e37a57d27c3 Deleted: sha256:25dfd5409299e45a52204719788a64f4d6ec42b94ed1c1c52b444dffe1617530 Deleted: sha256:2a8f3b2595c0d7bbd96c8311aafd38a19ee38dfd7db10f5f143e12a488453a97 Deleted: sha256:f8ac2fbb89387ed573175a3207a2a7228bacee098e98d859ef5cc69280c634bd Deleted: sha256:ca6ee1356e1919580f56aba2416d558358f13e0fd4af63fc1316a08b3b6cf556 Deleted: sha256:9fcaf31daa347938f67d3d57510ac2167b1943ab3046d2edc80025b3e78db016 Deleted: sha256:c2cfaed91fa85a1e25a93902ccf7b0adfd6d11a96ad60e05c5743deac4561a0d Deleted: sha256:5179194bb64957b92d747d0ef8658bd2c94e14724184f84bba5f6a97a3b52600 Deleted: sha256:3c5d03deca832571ebaf26e19cafcbb06b5770339dbd669bd938930942ca9ac8 [hadoop@hadoop dockerJavaTomcat]$
16.docker tag imageid name:tag
使用 docker tag 可以修改image 的名称
[root@hadoop dockerPubProgram]# docker tag 6564d0f11d31 js/centos:oracle-package