Tag Archives: containers

docker images are kept in /var/lib/docker

docker images are kept in /var/lib/docker

# du -s /var/lib/docker/*
20    /var/lib/docker/builder
220   /var/lib/docker/containerd
884   /var/lib/docker/containers
30028 /var/lib/docker/image
84    /var/lib/docker/network
5876620 /var/lib/docker/overlay2
20    /var/lib/docker/plugins
4     /var/lib/docker/runtimes
4     /var/lib/docker/swarm
4     /var/lib/docker/tmp
4     /var/lib/docker/trust
188   /var/lib/docker/volumes

you can save a lot of space by deleting any unused images and containers

# du -s /var/lib/docker/*
20	/var/lib/docker/builder
220	/var/lib/docker/containerd
4	/var/lib/docker/containers
2888	/var/lib/docker/image
84	/var/lib/docker/network
163380	/var/lib/docker/overlay2
20	/var/lib/docker/plugins
4	/var/lib/docker/runtimes
4	/var/lib/docker/swarm
4	/var/lib/docker/tmp
4	/var/lib/docker/trust
188	/var/lib/docker/volumes
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linuxlite docker process list

linuxlite docker containers each appear as a separate child process when you run pstree

 ├─cupsd
 ├─dbus-daemon
 ├─dockerd─┬─docker-containe─┬─docker-containe─┬─redis-server───3*[{redis-server}]
 │ │ │ └─6*[{docker-containe}]
 │ │ ├─docker-containe─┬─beanstalkd
 │ │ │ └─6*[{docker-containe}]
 │ │ ├─docker-containe─┬─my_init───runsvdir─┬─runsv───syslog-ng
 │ │ │ │ ├─runsv───tail
 │ │ │ │ ├─runsv
 │ │ │ │ └─runsv───cron
 │ │ │ └─6*[{docker-containe}]
 │ │ ├─docker-containe─┬─mysqld───26*[{mysqld}]
 │ │ │ └─6*[{docker-containe}]
 │ │ ├─docker-containe─┬─php-fpm───2*[php-fpm]
 │ │ │ └─6*[{docker-containe}]
 │ │ ├─docker-containe─┬─nginx───4*[nginx]
 │ │ │ └─6*[{docker-containe}]
 │ │ ├─docker-containe─┬─python
 │ │ │ └─6*[{docker-containe}]
 │ │ └─13*[{docker-containe}]
 │ ├─6*[docker-proxy───4*[{docker-proxy}]]
 │ ├─docker-proxy───3*[{docker-proxy}]
 │ └─15*[{dockerd}]
 ├─gnome-keyring-d─┬─{gdbus}
 │ ├─{gmain}
 │ └─{timer}

 

red hat openshift 1 & 2 support has ended but openshift 3 will be supported til 2020

red hat openshift 1 & 2 support has ended but openshift 3 will be supported til 2020

the openshift container platform 3 supports docker, jenkins, kubernates and more

openshift 3 docs

openshift origin docs