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Docker is an open-source project to easily create lightweight, portable,
self-sufficient containers from any application. The same container that
a developer builds and tests on a laptop can run at scale, in production,
on VMs, bare metal, OpenStack clusters, public clouds and more.
To use docker as a limited user, add your user to the 'docker' group:
# groupadd -r -g 281 docker
# usermod -a -G docker <your_username>
This will require logging out and back in.
To have the docker daemon start and stop with your host,
add to /etc/rc.d/rc.local:
if [ -x /etc/rc.d/rc.docker ]; then
/etc/rc.d/rc.docker start
fi
and to /etc/rc.d/rc.local_shutdown (creating it if needed):
if [ -x /etc/rc.d/rc.docker ]; then
/etc/rc.d/rc.docker stop
fi
For cgroups, docker does not support mounting cgroups on the "all" single hierarchy controller,
but rather the individual controllers.
To accomplish this, add the following to your /etc/fstab:
cgroup /cgroup/cpuset cgroup rw,relatime,cpuset 0 0
cgroup /cgroup/cpu cgroup rw,relatime,cpu 0 0
cgroup /cgroup/cpuacct cgroup rw,relatime,cpuacct 0 0
cgroup /cgroup/memory cgroup rw,relatime,memory 0 0
cgroup /cgroup/devices cgroup rw,relatime,devices 0 0
cgroup /cgroup/freezer cgroup rw,relatime,freezer 0 0
cgroup /cgroup/net_cls cgroup rw,relatime,net_cls 0 0
cgroup /cgroup/blkio cgroup rw,relatime,blkio 0 0
And in addition, add to /etc/cgconfig.conf the following:
mount {
cpuset = /cgroup/cpuset;
cpu = /cgroup/cpu;
cpuacct = /cgroup/cpuacct;
memory = /cgroup/memory;
devices = /cgroup/devices;
freezer = /cgroup/freezer;
net_cls = /cgroup/net_cls;
blkio = /cgroup/blkio;
}
If you are interested in enabling cgroup memory resource controll over swap as
well, then append "swapaccount=1" to your kernel's parameters. This is often in
/etc/lilo.conf, on the "append" variable.
NOTE: google-go-lang is only needed at compile time - not needed for runtime.
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