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sysadmin-docker-2.md

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Работа с контейнерами Docker. Часть 2. Базовые операции с контейнерами Андрей Маркелов

$ docker ps

$ docker run --name test alpine bash

$ docker ps -a

$ docker run --name test alpine busybox $ docker ps -a

$ docker run -it --name ubuntu ubuntu /bin/bash

$ docker ps

$ docker pause ubuntu

$ docker ps

mount | grep freezer

ls /sys/fs/cgroup/freezer/system.slice/

cat /sys/fs/cgroup/freezer/system.slice/docker-9b0117ecb82d6b792c42479d868f9c2b33409f7887cc4b419a02dde676637955.scope/freezer.state

$ docker pause ubuntu $ docker ps

cat /sys/fs/cgroup/freezer/system.slice/docker-9b0117ecb82d6b792c42479d868f9c2b33409f7887cc4b419a02dde676637955.scope/freezer.state

$ ps aux | grep Ds

$ docker ps -aq

$ docker images -q

$ docker rm $(docker ps -aq)

$ docker rmi $(docker images -q)

$ docker run -d -p 8888:80 --name my-httpd httpd

$ docker ps

iptables -L DOCKER -t nat

$ curl http://10.0.2.7:8888

$ docker exec -it my-httpd bash root@92722dc668b8:/usr/local/apache2# echo "My Apache server" > /usr/local/apache2/htdocs/index.html root@92722dc668b8:/usr/local/apache2# exit $ curl http://10.0.2.7:8888

$ docker run -d -P --name my-httpd httpd

$ docker port my-httpd

$ docker inspect my-httpd2 | nl

$ docker inspect -f '{{ .NetworkSettings.IPAddress}}' my-httpd2

$ docker run -dit --name my-apache-app -v "$PWD":/usr/local/apache2/htdocs/ httpd:2.4

$ mkdir mywww $ echo "My Apache server - 2" > mywww/index.html $ docker run -d -p 8889:80 -v /home/andrey/mywww: /usr/local/apache2/htdocs/ --name my-httpd2 httpd $ curl http://10.0.2.7:8889

chcon -R -t svirt_sandbox_file_t ~andrey/mywww/

$ docker stop my-httpd2 $ docker rm my-httpd2 $ docker run -itd -p 8889:80 -v /home/andrey/mywww: /usr/local/apache2/htdocs/ --name my-httpd2 httpd $ curl http://10.0.2.7:8889

$ docker run -v /home/andrey/mywww:/usr/local/apache2/htdocs/ --name my-data httpd echo "Data container"

$ docker ps -a

$ docker run --volumes-from my-data --name test httpd cat /usr/local/apache2/htdocs/index.html

$ docker rm test

$ docker run -d -p 8889:80 --volumes-from my-data --name my-httpd3 httpd

$ curl http://10.0.2.7:8889

$ docker inspect -f '{{ .HostConfig.VolumesFrom}}' my-httpd3

$ mkdir wwwbackup $ chcon -R -t svirt_sandbox_file_t ~andrey/wwwbackup

$ docker run --rm --volumes-from my-httpd3 -v /home/andrey/wwwbackup:/backup httpd cp /usr/local/apache2/htdocs/index.html /backup $ ls wwwbackup/