1 sudo cp docker/* /usr/bin/
2 sudo dockerd &

 1 #!/bin/sh
 2 # Copyright 2011 Canonical, Inc
 3 #           2014 Tianon Gravi
 4 # Author: Serge Hallyn <serge.hallyn@canonical.com>
 5 #         Tianon Gravi <tianon@debian.org>
 6 set -e
 7 
 8 # for simplicity this script provides no flexibility
 9 
10 # if cgroup is mounted by fstab, don't run
11 # don't get too smart - bail on any uncommented entry with 'cgroup' in it
12 if grep -v '^#' /etc/fstab | grep -q cgroup; then
13     echo 'cgroups mounted from fstab, not mounting /sys/fs/cgroup'
14     exit 0
15 fi
16 
17 # kernel provides cgroups?
18 if [ ! -e /proc/cgroups ]; then
19     exit 0
20 fi
21 
22 # if we don't even have the directory we need, something else must be wrong
23 if [ ! -d /sys/fs/cgroup ]; then
24     exit 0
25 fi
26 
27 # mount /sys/fs/cgroup if not already done
28 if ! mountpoint -q /sys/fs/cgroup; then
29     mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
30 fi
31 
32 cd /sys/fs/cgroup
33 
34 # get/mount list of enabled cgroup controllers
35 for sys in $(awk '!/^#/ { if ($4 == 1) print $1 }' /proc/cgroups); do
36     mkdir -p $sys
37     if ! mountpoint -q $sys; then
38         if ! mount -n -t cgroup -o $sys cgroup $sys; then
39             rmdir $sys || true
40         fi
41     fi
42 done
43 
44 # example /proc/cgroups:
45 #  #subsys_name    hierarchy    num_cgroups    enabled
46 #  cpuset    2    3    1
47 #  cpu    3    3    1
48 #  cpuacct    4    3    1
49 #  memory    5    3    0
50 #  devices    6    3    1
51 #  freezer    7    3    1
52 #  blkio    8    3    1
53 
54 # enable cgroups memory hierarchy, like systemd does (and lxc/docker desires)
55 # https://github.com/systemd/systemd/blob/v245/src/core/cgroup.c#L2983
56 # https://bugs.debian.org/940713
57 if [ -e /sys/fs/cgroup/memory/memory.use_hierarchy ]; then
58     echo 1 > /sys/fs/cgroup/memory/memory.use_hierarchy
59 fi
60 
61 exit 0