15. Docker命令练习

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1.启动一个tomcat容器实例，以复制方式把webapps复制进容器，制作一个webapps里有示例项目的tomcat镜像

下载tomcat

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[root@localhost download]# yum install wget
[root@localhost download]# wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.58/bin/apache-tomcat-8.5.58.tar.gz
[root@localhost download]# ls -lh
total 10M
-rw-r--r--. 1 root root 10M Sep 11 06:03 apache-tomcat-8.5.58.tar.gz
[root@localhost download]# tar -zxvf apache-tomcat-8.5.58.tar.gz 
[root@localhost download]# ls
apache-tomcat-8.5.58  apache-tomcat-8.5.58.tar.gz
[root@localhost download]# cd apache-tomcat-8.5.58
[root@localhost apache-tomcat-8.5.58]# ls
bin           conf             lib      logs    README.md      RUNNING.txt  webapps
BUILDING.txt  CONTRIBUTING.md  LICENSE  NOTICE  RELEASE-NOTES  temp         work
[root@localhost apache-tomcat-8.5.58]# cd webapps/
[root@localhost webapps]# ls
docs  examples  host-manager  manager  ROOT

复制webapps到容器中

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[root@localhost webapps]# docker cp . 1d396b710a51:/usr/local/tomcat/webapps/
[root@localhost webapps]# docker exec -it 1d396b710a51 /bin/bash
root@1d396b710a51:/usr/local/tomcat# cd webapps
root@1d396b710a51:/usr/local/tomcat/webapps# ls
ROOT  docs  examples  host-manager  manager
root@1d396b710a51:/usr/local/tomcat/webapps# exit
exit
[root@localhost webapps]#

制作新的镜像

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[root@localhost webapps]# docker commit -a "Tom" -m "webapps Tomcat" 1d396b710a51 mytomcat02:1.0
sha256:5a915ec4399963811ce9e148bcc396a34b1470a473e46dbbb99cc822b4345a04
[root@localhost webapps]# docker images
REPOSITORY              TAG                 IMAGE ID            CREATED             SIZE
mytomcat02              1.0                 5a915ec43999        3 seconds ago       652 MB
mytomcat01              1.0                 cce38f19a569        25 minutes ago      647 MB
docker.io/tomcat        8.5                 d5ef56581444        9 days ago          530 MB
docker.io/tomcat        latest              f796d3d2c195        9 days ago          647 MB
docker.io/nginx         latest              7e4d58f0e5f3        2 weeks ago         133 MB
docker.io/centos        latest              0d120b6ccaa8        6 weeks ago         215 MB
docker.io/hello-world   latest              bf756fb1ae65        8 months ago        13.3 kB
[root@localhost webapps]#

运行新的镜像

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[root@localhost webapps]# docker run -it -d -p 9992:8080 5a915ec43999
59f66823f9440443a18290661603063e36fd3be9c6e0c41a9b41876ae64d4914
[root@localhost webapps]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                    NAMES
59f66823f944        5a915ec43999        "catalina.sh run"   17 seconds ago      Up 16 seconds       0.0.0.0:9992->8080/tcp   jolly_joliot
1d396b710a51        cce38f19a569        "catalina.sh run"   25 minutes ago      Up 25 minutes       0.0.0.0:9999->8080/tcp   focused_easley
85e3bfc0c8e2        f796d3d2c195        "catalina.sh run"   36 minutes ago      Up 36 minutes       0.0.0.0:8888->8080/tcp   elastic_carson

进入新的容器

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[root@localhost webapps]# docker exec -it 59f66823f944 /bin/bash
root@59f66823f944:/usr/local/tomcat# 
root@59f66823f944:/usr/local/tomcat# 
root@59f66823f944:/usr/local/tomcat# ls 
BUILDING.txt	 LICENSE  RELEASE-NOTES  bin   lib   native-jni-lib  webapps	   work
CONTRIBUTING.md  NOTICE   RUNNING.txt	 conf  logs  temp	     webapps.dist
root@59f66823f944:/usr/local/tomcat# cd webapps
root@59f66823f944:/usr/local/tomcat/webapps# ls
ROOT  docs  examples  host-manager  manager
root@59f66823f944:/usr/local/tomcat/webapps#

在浏览器中访问192.168.88.128:9992

2. 启动一个tomcat容器实例，以数据卷的方式把webapps共享给tomcat容器，运行一个webapps里有示例项目的tomcat实例

启动一个tomcat容器并且挂载数据卷

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[root@localhost software]# docker run -it -d -p 9995:8080 -v /usr/local/software/tomcat_p_9995/:/usr/local/tomcat/webapps --privileged=true tomcat:8.5
1f53c5b786b9a57843e5fa714afb7d7b8151614b5c2f602029c14d1a229a417a
[root@localhost software]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED              STATUS              PORTS                    NAMES
1f53c5b786b9        tomcat:8.5          "catalina.sh run"   About a minute ago   Up About a minute   0.0.0.0:9995->8080/tcp   hardcore_volhard
[root@localhost software]# docker exec -it 1f53c5b786b9 /bin/bash
root@1f53c5b786b9:/usr/local/tomcat/webapps# ls
root@1f53c5b786b9:/usr/local/tomcat# exit
exit

容器里的webapps是空的

把webapps复制到宿主机的数据卷中

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[root@localhost download]# ls
apache-tomcat-8.5.58  apache-tomcat-8.5.58.tar.gz
[root@localhost download]# cd apache-tomcat-8.5.58
[root@localhost apache-tomcat-8.5.58]# ls
bin           conf             lib      logs    README.md      RUNNING.txt  webapps
BUILDING.txt  CONTRIBUTING.md  LICENSE  NOTICE  RELEASE-NOTES  temp         work
[root@localhost apache-tomcat-8.5.58]# cp -r webapps/* /usr/local/software/tomcat_p_9995/
[root@localhost tomcat_p_9995]# ls
docs  examples  host-manager  manager  ROOT
[root@localhost tomcat_p_9995]# docker exec -it 1f53c5b786b9 /bin/bash
root@1f53c5b786b9:/usr/local/tomcat# ls
BUILDING.txt	 LICENSE  README.md	 RUNNING.txt  conf  logs	    temp     webapps.dist
CONTRIBUTING.md  NOTICE   RELEASE-NOTES  bin	      lib   native-jni-lib  webapps  work
root@1f53c5b786b9:/usr/local/tomcat# cd webapps
root@1f53c5b786b9:/usr/local/tomcat/webapps# ls
ROOT  docs  examples  host-manager  manager