DevOps

🐳 Как ΠΈΠ·ΠΌΠ΅Π½ΠΈΡ‚ΡŒ располоТСниС Ρ„Π°ΠΉΠ»Π° Docker sock?

by itisgood
written by itisgood
Π₯ΠΎΡ‚ΠΈΡ‚Π΅ ΡƒΠ·Π½Π°Ρ‚ΡŒ, ΠΊΠ°ΠΊ ΠΈΠ·ΠΌΠ΅Π½ΠΈΡ‚ΡŒ ΠΏΡƒΡ‚ΡŒ ΠΊ Ρ„Π°ΠΉΠ»Ρƒ docker.sock?

Π§Ρ‚ΠΎ Ρ‚Π°ΠΊΠΎΠ΅ Docker Socket?

Π€Π°ΠΉΠ» сокСта Docker находится ΠΏΠΎ адрСсу /var/run/docker.sock

Он ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ для связи с Π³Π»Π°Π²Π½Ρ‹ΠΌ Π΄Π΅ΠΌΠΎΠ½ΠΎΠΌ (процСссом) docker.

Π­Ρ‚ΠΎ Ρ‚ΠΎΡ‡ΠΊΠ° Π²Ρ…ΠΎΠ΄Π° для Docker API.

Π­Ρ‚ΠΎΡ‚ сокСт ΠΏΠΎ ΡƒΠΌΠΎΠ»Ρ‡Π°Π½ΠΈΡŽ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ интСрфСйсом ΠΊΠΎΠΌΠ°Π½Π΄Π½ΠΎΠΉ строки Docker для выполнСния ΠΊΠΎΠΌΠ°Π½Π΄ Docker.

ΠŸΠΎΠ·Π²ΠΎΠ»ΡŒΡ‚Π΅ ΠΌΠ½Π΅ ΠΏΠΎΠΊΠ°Π·Π°Ρ‚ΡŒ Π²Π°ΠΌ, ΠΊΠ°ΠΊ ΠΈΠ·ΠΌΠ΅Π½ΠΈΡ‚ΡŒ располоТСниС Ρ„Π°ΠΉΠ»Π° носка Docker.

ΠžΡΡ‚Π°Π½ΠΎΠ²ΠΈΡ‚Π΅ Docker

sudo service docker stop
 sudo service docker status
● docker.service - Docker Application Container Engine
Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
Active: inactive (dead) since Sat 2019-11-23 15:37:00 EST; 4s ago
Docs: https://docs.docker.com
Process: 1474 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=exited, status=0/SUCCESS)
Main PID: 1474 (code=exited, status=0/SUCCESS)

Nov 10 01:56:49 geekflare dockerd[1474]: time="2019-11-10T01:56:49-05:00" level=error msg="2019/11/10 06:56:49 Entering go-plugins-helper
Nov 10 01:56:49 geekflare dockerd[1474]: time="2019-11-10T01:56:49-05:00" level=error msg="time=\"2019-11-10T06:56:49Z\" level=debug msg=
Nov 10 01:56:49 geekflare dockerd[1474]: time="2019-11-10T01:56:49-05:00" level=error msg="time=\"2019-11-10T06:56:49Z\" level=error msg=
Nov 10 01:57:23 geekflare dockerd[1474]: time="2019-11-10T01:57:23.635519865-05:00" level=info msg="Container 3141793b98f315dc90a57d81006
Nov 10 01:57:24 geekflare dockerd[1474]: time="2019-11-10T01:57:24.091797103-05:00" level=info msg="ignoring event" module=libcontainerd
Nov 23 15:36:56 geekflare systemd[1]: Stopping Docker Application Container Engine...
Nov 23 15:36:56 geekflare dockerd[1474]: time="2019-11-23T15:36:56.992795411-05:00" level=info msg="Processing signal 'terminated'"
Nov 23 15:36:58 geekflare dockerd[1474]: time="2019-11-23T15:36:58.234014533-05:00" level=info msg="ignoring event" module=libcontainerd
Nov 23 15:37:00 geekflare dockerd[1474]: time="2019-11-23T15:37:00.403572098-05:00" level=info msg="ignoring event" module=libcontainerd
Nov 23 15:37:00 geekflare systemd[1]: Stopped Docker Application Container Engine.

ΠžΡ‚Ρ€Π΅Π΄Π°ΠΊΡ‚ΠΈΡ€ΡƒΠΉΡ‚Π΅ docker.conf ΠΈ docker.socket

Π”Π°Π»Π΅Π΅ я мСняю ΠΏΡƒΡ‚ΡŒ с /var/run/docker.sock Π½Π° /home/itisgood/docker.sock

ΠžΡ‚Ρ€Π΅Π΄Π°ΠΊΡ‚ΠΈΡ€ΡƒΠΉΡ‚Π΅ Ρ„Π°ΠΉΠ» docker.conf Π² ΠΊΠ°Ρ‚Π°Π»ΠΎΠ³Π΅ /etc/init/ с Π½ΠΎΠ²Ρ‹ΠΌ располоТСниСм.
Π’Π°ΠΌ просто Π½ΡƒΠΆΠ½ΠΎ ΠΎΡ‚Ρ€Π΅Π΄Π°ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΠΎΠ΄Π½Ρƒ строку с DOCKER_SOCKET.
sudo gedit /etc/init/docker.conf

description "Docker daemon"

start on (filesystem and net-device-up IFACE!=lo)
stop on runlevel [!2345]

limit nofile 524288 1048576

# Having non-zero limits causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
limit nproc unlimited unlimited

respawn

kill timeout 20

pre-start script
# see also https://github.com/tianon/cgroupfs-mount/blob/master/cgroupfs-mount
if grep -v '^#' /etc/fstab | grep -q cgroup \
|| [ ! -e /proc/cgroups ] \
|| [ ! -d /sys/fs/cgroup ]; then
exit 0
fi
if ! mountpoint -q /sys/fs/cgroup; then
mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
fi
(
cd /sys/fs/cgroup
for sys in $(awk '!/^#/ { if ($4 == 1) print $1 }' /proc/cgroups); do
mkdir -p $sys
if ! mountpoint -q $sys; then
if ! mount -n -t cgroup -o $sys cgroup $sys; then
rmdir $sys || true
fi
fi
done
)
end script

script
# modify these in /etc/default/$UPSTART_JOB (/etc/default/docker)
DOCKERD=/usr/bin/dockerd
DOCKER_OPTS=
if [ -f /etc/default/$UPSTART_JOB ]; then
. /etc/default/$UPSTART_JOB
fi
exec "$DOCKERD" $DOCKER_OPTS --raw-logs
end script

# Don't emit "started" event until docker.sock is ready.
# See https://github.com/docker/docker/issues/6647
post-start script
DOCKER_OPTS=
DOCKER_SOCKET=
if [ -f /etc/default/$UPSTART_JOB ]; then
. /etc/default/$UPSTART_JOB
fi

if ! printf "%s" "$DOCKER_OPTS" | grep -qE -e '-H|--host'; then
DOCKER_SOCKET=/home/itisgood/docker.sock
else
DOCKER_SOCKET=$(printf "%s" "$DOCKER_OPTS" | grep -oP -e '(-H|--host)\W*unix://\K(\S+)' | sed 1q)
fi

if [ -n "$DOCKER_SOCKET" ]; then
while ! [ -e "$DOCKER_SOCKET" ]; do
initctl status $UPSTART_JOB | grep -qE "(stop|respawn)/" && exit 1
echo "Waiting for $DOCKER_SOCKET"
sleep 0.1
done
echo "$DOCKER_SOCKET is up"
fi
end script
ΠžΡ‚Ρ€Π΅Π΄Π°ΠΊΡ‚ΠΈΡ€ΡƒΠΉΡ‚Π΅ Ρ„Π°ΠΉΠ» docker.socket, располоТСнный Π² /lib/systemd/system , с ΠΎΠ±Π½ΠΎΠ²Π»Π΅Π½Π½Ρ‹ΠΌ располоТСниСм Ρ„Π°ΠΉΠ»Π° docker.sock.
 sudo gedit /lib/systemd/system/docker.socket

[Unit]

Description=Docker Socket for the API

PartOf=docker.service

[Socket]

ListenStream=/home/itisgood/docker.sock

SocketMode=0660

SocketUser=root

SocketGroup=docker

[Install]

WantedBy=sockets.target
ЗапуститС ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π½ΡƒΡŽ Π½ΠΈΠΆΠ΅ ΠΊΠΎΠΌΠ°Π½Π΄Ρƒ, Ρ‡Ρ‚ΠΎΠ±Ρ‹ ΠΎΠ±Π½ΠΎΠ²ΠΈΡ‚ΡŒ измСнСния (располоТСниС Ρ„Π°ΠΉΠ»Π° Docker sock).
$ sudo systemctl daemon-reload

ЗапуститС Docker

Π”Π°Π²Π°ΠΉΡ‚Π΅ запустим сСрвис Docker ΠΈ ΠΏΡ€ΠΎΠ²Π΅Ρ€ΠΈΠΌ статус.

Π’ ΠΊΠΎΠ½Ρ†Π΅ Π²Ρ‹Π²ΠΎΠ΄Π° состояния Π½Π° Ρ‚Π΅Ρ€ΠΌΠΈΠ½Π°Π»Π΅, Π²Ρ‹ ΡƒΠ²ΠΈΠ΄ΠΈΡ‚Π΅ ΠΎΠ±Π½ΠΎΠ²Π»Π΅Π½Π½Ρ‹ΠΉ ΠΏΡƒΡ‚ΡŒ ΠΊ Ρ„Π°ΠΉΠ»Ρƒ docker.sock.

sudo service docker start
 sudo service docker status

docker.service - Docker Application Container Engine
Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2019-11-23 15:39:36 EST; 3s ago
Docs: https://docs.docker.com
Main PID: 8840 (dockerd)
Tasks: 17
Memory: 47.6M
CGroup: /system.slice/docker.service
└─8840 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Nov 23 15:39:35 geekflare dockerd[8840]: time="2019-11-23T15:39:35.091941184-05:00" level=warning msg="Your kernel does not support cgroup rt runtime"
Nov 23 15:39:35 geekflare dockerd[8840]: time="2019-11-23T15:39:35.093149218-05:00" level=info msg="Loading containers: start."
Nov 23 15:39:35 geekflare dockerd[8840]: time="2019-11-23T15:39:35.957842188-05:00" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon
Nov 23 15:39:36 geekflare dockerd[8840]: time="2019-11-23T15:39:36.078753190-05:00" level=info msg="Loading containers: done."
Nov 23 15:39:36 geekflare dockerd[8840]: time="2019-11-23T15:39:36.664727326-05:00" level=info msg="Docker daemon" commit=481bc77 graphdriver(s)=overlay2 version=18.09.6
Nov 23 15:39:36 geekflare dockerd[8840]: time="2019-11-23T15:39:36.817929464-05:00" level=error msg="cluster exited with error: error while loading TLS certificate in /var/lib/do
Nov 23 15:39:36 geekflare dockerd[8840]: time="2019-11-23T15:39:36.820439024-05:00" level=error msg="swarm component could not be started" error="error while loading TLS certific
Nov 23 15:39:36 geekflare dockerd[8840]: time="2019-11-23T15:39:36.820821712-05:00" level=info msg="Daemon has completed initialization"
Nov 23 15:39:36 geekflare systemd[1]: Started Docker Application Container Engine.
Nov 23 15:39:36 geekflare dockerd[8840]: time="2019-11-23T15:39:36.883382952-05:00" level=info msg="API listen on /home/itisgood/docker.sock"
ЗапуститС ΠΊΠΎΠΌΠ°Π½Π΄Ρƒ ls ΠΏΠΎ ΠΏΡƒΡ‚ΠΈ ΠΊ Ρ„Π°ΠΉΠ»Ρƒ docker.sock, Ρ‡Ρ‚ΠΎΠ±Ρ‹ ΡƒΠ±Π΅Π΄ΠΈΡ‚ΡŒΡΡ, Ρ‡Ρ‚ΠΎ этот Ρ„Π°ΠΉΠ» Π±Ρ‹Π» создан ΠΏΡ€ΠΈ запускС слуТбы Docker.
ls -l
total 466832
-rw-r--r-- 1 geekflare geekflare 0 Oct 23 05:32 ]
drwxr-xr-x 9 tomcat tomcat 4096 Nov 18 14:30 apache-tomcat-9.0.27
-rw-r--r-- 1 geekflare geekflare 10982406 Oct 7 06:21 apache-tomcat-9.0.27.tar.gz
drwxr-xr-x 8 geekflare geekflare 4096 Oct 23 06:05 chef-repo
-rw-r--r-- 1 geekflare geekflare 252269838 Jul 1 15:16 chef-server-core_13.0.17-1_amd64.deb
-rw-r--r-- 1 geekflare geekflare 129713682 Dec 27 2018 chef-workstation_0.2.43-1_amd64.deb
drwxr-xr-x 2 geekflare geekflare 4096 Oct 23 2018 Desktop
-rw-r--r-- 1 geekflare geekflare 726 Jul 27 15:10 Dockerfile
srw-rw---- 1 root docker 0 Nov 23 15:39 docker.sock
drwxr-xr-x 2 geekflare geekflare 4096 Oct 23 2018 Documents
drwxr-xr-x 2 geekflare geekflare 4096 Jul 20 18:20 Downloads
-rw-r--r-- 1 geekflare geekflare 8980 Oct 23 2018 examples.desktop
Π’Ρ‹ ΡƒΡΠΏΠ΅ΡˆΠ½ΠΎ ΠΎΠ±Π½ΠΎΠ²ΠΈΠ»ΠΈ располоТСниС Ρ„Π°ΠΉΠ»Π° docker sock.

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