Otu esi etinye Docker na Run Docker Containers na Ubuntu
Docker bụ teknụzụ mepere emepe yana usoro sistemụ arụmọrụ ama ama (nke a na-akpọkarị \containerization) teknụzụ na-arụ ọrụ na Linux na Windows. Docker na-eme ka ọ dị mfe ịmepụta, ibugharị na ịme ngwa site na iji akpa.
Site na arịa, ndị mmepe (na ndị na-ahụ maka sistemụ) nwere ike ijikọ ngwa na ihe niile achọrọ iji mee ngwa ahụ - koodu, oge ịgba ọsọ, ọba akwụkwọ, mgbanwe gburugburu ebe obibi, na faịlụ nhazi, wee bupu ya niile dị ka otu ngwugwu. Ee, ọ dị oke mma!
N'isiokwu a, anyị ga-egosi gị otu esi etinye Docker CE (Community Edition), mepụta ma na-agba ọsọ Docker na nkesa Ubuntu.
Ịwụnye Docker CE (Community Edition) na Ubuntu
1. Iji wụnye Docker CE, nke mbụ, ịkwesịrị iwepụ ụdị Docker ochie nke a na-akpọ docker
, docker.io
, ma ọ bụ docker-engine
site na sistemụ site na iji iwu a.
$ sudo apt-get remove docker docker-engine docker.io containerd runc
2. Ọzọ, ịkwesịrị ịtọ ntọala Docker iji wụnye na melite Docker site na ebe nchekwa site na iji iwu ndị a.
$ sudo apt-get update $ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - $ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
3. Melite ndepụta ngwugwu dabara adaba wee wụnye ụdị Docker CE kachasị ọhụrụ site na iji iwu ndị a.
$ sudo apt-get update $ sudo apt-get install docker-ce docker-ce-cli containerd.io
Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: aufs-tools cgroupfs-mount pigz The following NEW packages will be installed: aufs-tools cgroupfs-mount containerd.io docker-ce docker-ce-cli pigz 0 upgraded, 6 newly installed, 0 to remove and 167 not upgraded. Need to get 50.7 MB of archives. After this operation, 243 MB of additional disk space will be used. Do you want to continue? [Y/n] y Get:1 http://archive.ubuntu.com/ubuntu bionic/universe amd64 pigz amd64 2.4-1 [57.4 kB] Get:2 https://download.docker.com/linux/ubuntu bionic/stable amd64 containerd.io amd64 1.2.4-1 [19.9 MB] Get:3 http://archive.ubuntu.com/ubuntu bionic/universe amd64 aufs-tools amd64 1:4.9+20170918-1ubuntu1 [104 kB] Get:4 http://archive.ubuntu.com/ubuntu bionic/universe amd64 cgroupfs-mount all 1.4 [6,320 B] Get:5 https://download.docker.com/linux/ubuntu bionic/stable amd64 docker-ce-cli amd64 5:18.09.3~3-0~ubuntu-bionic [13.1 MB] Get:6 https://download.docker.com/linux/ubuntu bionic/stable amd64 docker-ce amd64 5:18.09.3~3-0~ubuntu-bionic [17.4 MB] Fetched 50.7 MB in 7s (7,779 kB/s) ...
4. Mgbe ị wụnye ngwugwu Docker CE nke ọma, ọrụ ahụ kwesịrị ịmalite na-akpaghị aka ma nwee ike ịmalite na sistemụ buut, ị nwere ike ịlele ọkwa ya site na iji iwu na-esonụ.
$ sudo systemctl status docker
● docker.service - Docker Application Container Engine Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled) Active: active (running) since Wed 2019-03-06 08:06:42 UTC; 2min 18s ago Docs: https://docs.docker.com Main PID: 5274 (dockerd) Tasks: 8 CGroup: /system.slice/docker.service └─5274 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock Mar 06 08:06:41 tecmint dockerd[5274]: time="2019-03-06T08:06:41.562587408Z" level=warning msg="Your kernel does not support cgroup rt runtime" Mar 06 08:06:41 tecmint dockerd[5274]: time="2019-03-06T08:06:41.562767803Z" level=warning msg="Your kernel does not support cgroup blkio weight" Mar 06 08:06:41 tecmint dockerd[5274]: time="2019-03-06T08:06:41.562966844Z" level=warning msg="Your kernel does not support cgroup blkio weight_device" Mar 06 08:06:41 tecmint dockerd[5274]: time="2019-03-06T08:06:41.565298457Z" level=info msg="Loading containers: start." Mar 06 08:06:41 tecmint dockerd[5274]: time="2019-03-06T08:06:41.950942467Z" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be used to set a prefer Mar 06 08:06:42 tecmint dockerd[5274]: time="2019-03-06T08:06:42.036964493Z" level=info msg="Loading containers: done." Mar 06 08:06:42 tecmint dockerd[5274]: time="2019-03-06T08:06:42.156279378Z" level=info msg="Docker daemon" commit=774a1f4 graphdriver(s)=overlay2 version=18.09.3 Mar 06 08:06:42 tecmint dockerd[5274]: time="2019-03-06T08:06:42.157145045Z" level=info msg="Daemon has completed initialization" Mar 06 08:06:42 tecmint systemd[1]: Started Docker Application Container Engine. Mar 06 08:06:42 tecmint dockerd[5274]: time="2019-03-06T08:06:42.224229999Z" level=info msg="API listen on /var/run/docker.sock"
5. N'ikpeazụ, chọpụta na arụnyere Docker CE nke ọma site na iji foto hello-world
.
$ sudo 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/
Mụta Iwu Docker Basic na Ubuntu
6. Iji nweta ozi gbasara Docker, mee iwu na-esonụ.
$ sudo docker info Kernel Version: 5.0.0-050000-generic Operating System: Ubuntu 18.04.1 LTS OSType: linux Architecture: x86_64 CPUs: 1 Total Memory: 1.452GiB Name: tecmint ID: FWSB:IRIF:DYL7:PRB5:Y66E:37MY:ISPO:HZVY:6YJO:2IYL:TO6Y:GNB7 Docker Root Dir: /var/lib/docker Debug Mode (client): false Debug Mode (server): false Registry: https://index.docker.io/v1/ Labels: Experimental: false Insecure Registries: 127.0.0.0/8 Live Restore Enabled: false Product License: Community Engine
7. Iji nweta ozi gbasara ụdị Docker, mee iwu a.
$ sudo docker version Client: Version: 18.09.3 API version: 1.39 Go version: go1.10.8 Git commit: 774a1f4 Built: Thu Feb 28 06:53:11 2019 OS/Arch: linux/amd64 Experimental: false Server: Docker Engine - Community Engine: Version: 18.09.3 API version: 1.39 (minimum version 1.12) Go version: go1.10.8 Git commit: 774a1f4 Built: Thu Feb 28 05:59:55 2019 OS/Arch: linux/amd64 Experimental: false
8. Iji nweta ndepụta nke iwu Docker niile dị na-agba ọsọ docker
na ọdụ gị.
$ docker Usage: docker [OPTIONS] COMMAND A self-sufficient runtime for containers Options: --config string Location of client config files (default "/home/tecmint/.docker") -D, --debug Enable debug mode -H, --host list Daemon socket(s) to connect to -l, --log-level string Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default "info") --tls Use TLS; implied by --tlsverify --tlscacert string Trust certs signed only by this CA (default "/home/tecmint/.docker/ca.pem") --tlscert string Path to TLS certificate file (default "/home/tecmint/.docker/cert.pem") --tlskey string Path to TLS key file (default "/home/tecmint/.docker/key.pem") --tlsverify Use TLS and verify the remote -v, --version Print version information and quit Management Commands: builder Manage builds config Manage Docker configs container Manage containers engine Manage the docker engine image Manage images network Manage networks node Manage Swarm nodes plugin Manage plugins secret Manage Docker secrets service Manage services stack Manage Docker stacks swarm Manage Swarm system Manage Docker trust Manage trust on Docker images volume Manage volumes ....
Budata ihe onyonyo Docker na Ubuntu
9. Iji mee akpa Docker, nke mbụ, ịkwesịrị ibudata onyonyo site na Docker Hub - na-enye onyonyo efu site na ebe nchekwa ya.
Dịka ọmụmaatụ, iji budata onyonyo Docker akpọrọ CentOS 7
, nye iwu a.
$ sudo docker search centos NAME DESCRIPTION STARS OFFICIAL AUTOMATED centos The official build of CentOS. 5227 [OK] ansible/centos7-ansible Ansible on Centos7 120 [OK] jdeathe/centos-ssh CentOS-6 6.10 x86_64 / CentOS-7 7.5.1804 x86… 107 [OK] consol/centos-xfce-vnc Centos container with "headless" VNC session… 81 [OK] imagine10255/centos6-lnmp-php56 centos6-lnmp-php56 50 [OK] centos/mysql-57-centos7 MySQL 5.7 SQL database server 47 tutum/centos Simple CentOS docker image with SSH access 43 gluster/gluster-centos Official GlusterFS Image [ CentOS-7 + Glust… 40 [OK] openshift/base-centos7 A Centos7 derived base image for Source-To-I… 39 centos/postgresql-96-centos7 PostgreSQL is an advanced Object-Relational … 37 centos/python-35-centos7 Platform for building and running Python 3.5… 33 kinogmt/centos-ssh CentOS with SSH 26 [OK] openshift/jenkins-2-centos7 A Centos7 based Jenkins v2.x image for use w… 20 centos/php-56-centos7 Platform for building and running PHP 5.6 ap… 19 pivotaldata/centos-gpdb-dev CentOS image for GPDB development. Tag names… 10 openshift/wildfly-101-centos7 A Centos7 based WildFly v10.1 image for use … 6 openshift/jenkins-1-centos7 DEPRECATED: A Centos7 based Jenkins v1.x ima… 4 darksheer/centos Base Centos Image -- Updated hourly 3 [OK] pivotaldata/centos Base centos, freshened up a little with a Do… 2 pivotaldata/centos-mingw Using the mingw toolchain to cross-compile t… 2 pivotaldata/centos-gcc-toolchain CentOS with a toolchain, but unaffiliated wi… 1 openshift/wildfly-81-centos7 A Centos7 based WildFly v8.1 image for use w… 1 blacklabelops/centos CentOS Base Image! Built and Updates Daily! 1 [OK] smartentry/centos centos with smartentry 0 [OK] jameseckersall/sonarr-centos Sonarr on CentOS 7 0 [OK]
10. Mgbe i kpebisiri ike na ihe oyiyi ịchọrọ ịgba ọsọ dabere na ihe ị chọrọ, budata ya na mpaghara site na iji iwu dị n'okpuru (na nke a, a na-ebudata ihe oyiyi CentOS ma jiri ya).
$ docker pull centos Using default tag: latest latest: Pulling from library/centos a02a4930cb5d: Pull complete Digest: sha256:184e5f35598e333bfa7de10d8fb1cebb5ee4df5bc0f970bf2b1e7c7345136426 Status: Downloaded newer image for centos:latest
11. Ka ịdepụta ihe oyiyi Docker niile dị na onye ọbịa gị gbasoro iwu a.
$ sudo docker images REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest fce289e99eb9 2 months ago 1.84kB centos latest 1e1148e4cc2c 3 months ago 202MB
12. Ọ bụrụ na ịchọghị ihe oyiyi Docker ọzọ ma ị nwere ike wepu ya site na iji iwu na-esonụ.
$ sudo docker rmi centos Untagged: centos:latest Untagged: [email :184e5f35598e333bfa7de10d8fb1cebb5ee4df5bc0f970bf2b1e7c7345136426 Deleted: sha256:1e1148e4cc2c148c6890a18e3b2d2dde41a6745ceb4e5fe94a923d811bf82ddb Deleted: sha256:071d8bd765171080d01682844524be57ac9883e53079b6ac66707e192ea25956
Gbaa igbe Docker na Ubuntu
13. Iji mepụta ma na-agba ọsọ Docker akpa, nke mbụ ị ga-ebu ụzọ mee iwu n'ime ihe oyiyi CentOS
ebudatara, yabụ iwu bụ isi ga-abụ ịlele ụdị nkesa n'ime akpa ahụ site na iji iwu cat. , dị ka egosiri.
$ docker run centos cat /etc/issue
14. Iji mee ka akpa ahụ pụta ọzọ, nke mbụ ị ga-ebu ụzọ nweta ID ma ọ bụ Aha site na iji iwu na-esonụ, nke ga-egosipụta ndepụta nke ihe na-agba ọsọ na nkwụsị:
$ sudo docker ps -l CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 0ddfa81c5779 centos "cat /etc/issue" About a minute ago Exited (0) About a minute ago elastic_shirley
15. Ozugbo enwetara ID ma ọ bụ Aha, ị nwere ike ịmalite akpa ahụ site na iji iwu a:
$ sudo docker start 0ddfa81c5779 OR $ sudo docker start elastic_shirley
Ebe a, eriri 0ddfa81c5779
na-anọchite anya akpa ID yana elastic_shirley
na-anọchi anya Aha akpa ahụ.
16. Iji kwụsị akpa na-agba ọsọ na-agba ọsọ docker stop
iwu site na ịkọwapụta ID ma ọ bụ Aha.
$ sudo docker stop 0ddfa81c5779 OR $ sudo docker stop elastic_shirley
17. Ụzọ ka mma, ka ị ghara icheta ID akpa ahụ ga-abụ ịkọwa aha pụrụ iche maka akpa ọ bụla ị mepụtara site na iji - aha
nhọrọ dị ka egosiri.
$ docker run --name myname centos cat /etc/issue
18. Iji jikọọ ma na-agba ọsọ Linux iwu n'ime akpa na-enye ndị a iwu.
$ docker run -it centos bash uname -a Linux 6213ec547863 5.0.0-050000-generic #201903032031 SMP Mon Mar 4 01:33:18 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux cat /etc/redhat-release CentOS Linux release 7.6.1810 (Core)
19. Iji kwụsị ma laghachi na nnabata site na nnọkọ akpa na-agba ọsọ ị ga-ede iwu wepụ
dị ka egosiri.
$ exit
Nke ahụ bụ ihe niile maka nhazi akpa akpa. Ọ bụrụ na ị nwere ajụjụ ọ bụla ma ọ bụ kwuo gbasara akụkọ a, jiri ụdị nzaghachi dị n'okpuru ka iru anyị.