Docker installation and deployment

1, Install docker

Environment: YUM source for rhel7.3
[root@18 docker]# yum install docker-engine-17.03.1.ce-1.el7.centos.x86_64.rpm -y
[root@18 docker]# yum install docker-engine-selinux-17.03.1.ce-1.el7.centos.noarch.rpm -y
[root@18 docker]# systemctl start docker.service 
##View docker version
[root@18 docker]# docker version
 Version:      17.03.1-ce
 API version:  1.27
 Go version:   go1.7.5
 Git commit:   c6d412e
 Built:        Fri Mar 24 00:36:45 2017
 OS/Arch:      linux/amd64

 Version:      17.03.1-ce
 API version:  1.27 (minimum version 1.12)
 Go version:   go1.7.5
 Git commit:   c6d412e
 Built:        Fri Mar 24 00:36:45 2017
 OS/Arch:      linux/amd64
 Experimental: false

2, Add image source

To register an account with alicloud, use the image accelerator:

[root@18 ~]# sudo mkdir -p /etc/docker
[root@18 ~]# tee /etc/docker/daemon.json <<-'EOF'  ##Mirror acceleration
> {
>   "registry-mirrors": [""]
> }
  "registry-mirrors": [""]
##Search for images on the Internet
[root@foundation10 docker]# docker search nginx
##From Alibaba cloud source nginx image
[root@18 docker]# docker pull httpd
Using default tag: latest
latest: Pulling from library/httpd
d660b1f15b9b: Downloading   8.4 MB/54.25 MB
aa1c79a2fa37: Download complete 
f5f6514c0aff: Download complete 

3, Using docker

Import mirroring

[root@18 pub]# docker load < game2048.tar
011b303988d2: Loading layer  5.05 MB/5.05 MB
36e9226e74f8: Loading layer 51.46 MB/51.46 MB
192e9fad2abc: Loading layer 3.584 kB/3.584 kB
6d7504772167: Loading layer 4.608 kB/4.608 kB
88fca8ae768a: Loading layer 629.8 kB/629.8 kB
Loaded image: game2048:latest
##docker run -- create a new container and run load image
-i: Run the container in interactive mode, usually with -t Simultaneous use;
-p: Port mapping, format: host(Host)port:Container port
-d: Run the container in the background and return to the containerID--name="nginx-lb": Specify a name for the container;
-h "mars": Of the specified container hostname;
-a stdin: Specify standard input / output content type, optional STDIN/STDOUT/STDERR Three items;

[root@18 pub]#  docker run -d --name vm1 game2048

Visit IP: in the browser to enter the 2048 game just imported.

##docker ps -- lists all running container information.
    -a :Displays all containers, including those that are not running.
    -l :Show recently created containers.
    -n :List recently created n A container.
    -q :In silent mode, only the container number is displayed.
    -s :Displays the total file size.
[root@18 docker]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
1e7edf48084a        game2048            "/bin/sh -c 'sed -..."   4 minutes ago       Up 4 minutes        80/tcp, 443/tcp     vm1
[root@18 docker]# ip addr
##View to create a new virtual bridge docker0: ip on the host ( / 16)
9: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether 02:42:d8:d0:7f:2a brd ff:ff:ff:ff:ff:ff
    inet scope global docker0
       valid_lft forever preferred_lft forever
    inet6 fe80::42:d8ff:fed0:7f2a/64 scope link 
       valid_lft forever preferred_lft forever
##docker images -- List local images.
-a :List all local images (including the intermediate image layer, which is filtered out by default);
-q :Show only mirrorsID. 

[root@18 docker]# docker images game2048
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
game2048            latest              19299002fdbe        20 months ago       55.5 MB
##Docker inspection -- get the metadata of the container / image.
[root@18 docker]# docker inspect vm1
              "Gateway": "",
                    "IPAddress": "",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:02"
[root@18 pub]# iptables -t nat -L

target     prot opt source               destination         
MASQUERADE  all  --        anywhere            
RETURN     all  --        

Container management command

#docker attach vm1 connection container
 #docker top vm1 view the process information running in the container
 #docker logs vm1 view container instruction output - f parameter can be viewed in real time
 #docker stats vm1 view container resource usage
 #docker diff vm1 view container modification
 #docker run -d --name vm1 ubuntu bash -c "while true; do echo westos; sleep 1; done" execute the command when running the container
 #docker stop vm1 stop container
 #docker start vm1 start container
 #docker kill vm1 forces container to be killed
 #docker restart vm1 restart container
 #docker pause/unpause vm1 pause / resume container
 #docker rm vm1 delete container
 #Docker export Vm1 > vm1.tar export container
 #docker import vm1.tar image import container as image
 #docker container prune delete all stopped containers
 #docker load -i rhel7.tar import image

docker uses nginx

[root@18 docker]# docker load < nginx.tar
[root@18 ~]# docker images nginx
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
nginx               latest              af4b3d7d5401        2 years ago         190 MB
[root@18 docker1]# docker cp index.html vm2:/usr/share/nginx/html/
[root@18 ~]# docker run -d --name vm2 -p 8080:80 nginx

To access tests on a browser:

5, Mount file system

Mount nginx configuration file directory

[root@79 KINGSTON]# mkdir /tmp/docker
[root@79 KINGSTON]# cd /tmp/docker/
[root@79 docker]# mkdir web
[root@79 docker]# cd web/
[root@79 web]# vim index.html
[root@79 web]# docker run -d --name vm3 -v /tmp/docker/web:/usr/share/nginx/html nginx

ctrl pq exits without stopping
 CTRL D close container
[root@18 docker1]# docker images centos 
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
centos              latest              5182e96772bf        12 days ago         200 MB
centos              6                   d0a31e3494fe        2 years ago         229 MB
##Run MIA with image ID
[root@18 docker1]# docker run -it 5182e96772bf /bin/bash
[root@b94b108bd5c5 /]# 
[root@18 web]# docker run -it --name vm1 -v /tmp/data1:/data1 -v /tmp/data2:/data2:ro -v /etc/yum.repos.d/rhel-dvd.repo:/etc/yum.repos.d/rhel-dvd.repo:ro rhel7 bash
bash-4.2# df

bash-4.2# ls data*
bash-4.2# ls /etc/yum.repos.d/    
rhel-dvd.repo  rhel7.repo
bash-4.2# yum repolist
bash-4.2# cd /data2
bash-4.2# touch file
touch: cannot touch 'file': Read-only file system
bash-4.2# cd /data1/
bash-4.2# touch file1

##Document mount test
[root@79 data1]# ls /tmp/data1/

Get file volume from specified container

[root@18 web]# docker rm -f vm1
[root@18 web]# docker create --name datavol -v /tmp/data1:/data1 -v /tmp/data2:/data2:ro -v /etc/yum.repos.d/rhel-dvd.repo:/etc/yum.repos.d/rhel-dvd.repo:ro rhel7 bash
[root@18 web]# docker run -it --name vm1 --volumes-from datavol rhel7 bash
##Backup container
[root@18 docker]# docker load -i ubuntu.tar 
[root@18 docker]# docker run --rm -v /tmp/backup:/backup ubuntu tar cf /backup/etc.tar /etc
[root@18 docker]# cd /tmp/backup/
[root@18 backup]# ls
[root@18 test]# docker run -it --name vm1 ubuntu

[root@18 docker]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                            NAMES
e63ae37b7d6b        ubuntu              "/bin/bash"              15 seconds ago      Up 14 seconds  
[root@18 docker]# docker inspect vm1 | grep Pid
            "Pid": 31145,
            "PidMode": "",
            "PidsLimit": 0,

[root@18 backup]# ps ax
31145 pts/8    Ss+    0:00 /bin/bash
[root@18 backup]# cd /proc/13505/ns
[root@18 ns]# ll
total 0
lrwxrwxrwx 1 root root 0 Aug 19 14:57 ipc -> ipc:[4026532408]
lrwxrwxrwx 1 root root 0 Aug 19 14:57 mnt -> mnt:[4026532406]
lrwxrwxrwx 1 root root 0 Aug 19 14:56 net -> net:[4026532411]
lrwxrwxrwx 1 root root 0 Aug 19 14:57 pid -> pid:[4026532409]
lrwxrwxrwx 1 root root 0 Aug 19 14:57 user -> user:[4026531837]
lrwxrwxrwx 1 root root 0 Aug 19 14:57 uts -> uts:[4026532407]

Keywords: Docker Nginx yum CentOS

Added by alconebay on Wed, 01 Jan 2020 03:48:56 +0200