Changes between Version 1 and Version 2 of TipAndDoc/Linux/LXC/ArchLinux

Timestamp:

Apr 23, 2016 5:23:30 PM (8 years ago)

Author:

mitty

Comment:

--

TipAndDoc/Linux/LXC/ArchLinux

@@ -7 +7 @@
  > I’m on a laptop with wireless, so I can’t just create a bridge and give IPs to containers from an upstream DHCP server. I needed to do NAT and essentially simulate/replicate how docker networking works.
 
- = DHCP =
+ = lxc.service =
+ == A stop job is running ==
+ * lxc.serviceを有効にしないと、ホストOSシャットダウン時にコンテナが自動シャットダウンされず90秒タイムアウト待ちが発生する
+  * [[Image(lxc-A_stop_job_is_running.png,33%)]]
+
+ * mitty@lxc-host:~$ journalctl
+{{{
+Apr 17 22:52:41 lxc-host sudo[1908]:    mitty : TTY=pts/0 ; PWD=/home/mitty ; USER=root ; COMMAND=/usr/bin/sh -c poweroff
+
+(snip)
+
+Apr 17 22:52:41 lxc-host systemd[529]: Received SIGRTMIN+24 from PID 1913 (kill).
+Apr 17 22:52:41 lxc-host systemd[1]: Stopped User Manager for UID 1000.
+Apr 17 22:52:42 lxc-host systemd[1]: Started Generate shutdown-ramfs.
+Apr 17 22:54:11 lxc-host systemd[1]: session-c1.scope: Stopping timed out. Killing.
+Apr 17 22:54:11 lxc-host systemd[1]: Stopped Session c1 of user mitty.
+}}}
+mitty@test:~$ journalctl
+{{{
+Apr 17 22:52:41 test systemd[1]: Received SIGHUP.
+Apr 17 22:52:41 test systemd[1]: Received SIGTERM.
+Apr 17 22:52:41 test systemd[1]: Reexecuting.
+Apr 17 22:52:41 test systemd[1]: systemd 229 running in system mode. (+PAM -AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN)
+Apr 17 22:52:41 test systemd[1]: Detected virtualization lxc.
+Apr 17 22:52:41 test systemd[1]: Detected architecture x86-64.
+Apr 17 22:52:41 test systemd[1]: Failed to install release agent, ignoring: No such file or directory
+}}}
+
+ === コンテナのシャットダウンについて ===
+ * man systemd
+{{{
+SIGNALS
+       SIGTERM
+           Upon receiving this signal the systemd system manager serializes
+           its state, reexecutes itself and deserializes the saved state
+           again. This is mostly equivalent to systemctl daemon-reexec.
+
+           systemd user managers will start the exit.target unit when this
+           signal is received. This is mostly equivalent to systemctl --user
+           start exit.target.
+
+(snip)
+
+       SIGHUP
+           Reloads the complete daemon configuration. This is mostly
+           equivalent to systemctl daemon-reload.
+
+(snip)
+
+       SIGRTMIN+4
+           Powers off the machine, starts the poweroff.target unit. This is
+           mostly equivalent to systemctl start poweroff.target.
+
+(snip)
+
+       SIGRTMIN+14
+           Immediately powers off the machine.
+}}}
+
+ * /usr/share/lxc/config/archlinux.common.conf
+{{{
+# Set the halt/stop signals
+lxc.haltsignal=SIGRTMIN+4
+lxc.stopsignal=SIGRTMIN+14
+}}}
+ * [https://lists.linuxcontainers.org/pipermail/lxc-devel/2012-May/002468.html (lxc-devel) Shutting down containers properly]
+ * [https://bbs.archlinux.org/viewtopic.php?id=181032 (Solved) LXC shutdown of archlinux containers not working (lxc-stop) / System Administration / Arch Linux Forums]
+
+ * lxc-stop
+  * Host
+{{{
+Apr 19 22:15:54 lxc-host sudo[589]:    mitty : TTY=pts/0 ; PWD=/home/mitty ; USER=root ; COMMAND=/usr/bin/lxc-stop -n test
+}}}
+  * container
+{{{
+Apr 19 22:15:54 test systemd[1]: Received SIGRTMIN+4.
+Apr 19 22:15:54 test systemd[1]: Stopping User Manager for UID 1000...
+Apr 19 22:15:54 test systemd[1]: Stopped target Multi-User System.
+}}}
+
+ == systemctl enable lxc.service ==
+ * /usr/lib/systemd/system/lxc.service
+{{{
+ExecStart=/usr/lib/lxc/lxc-containers start
+ExecStop=/usr/lib/lxc/lxc-containers stop
+}}}
+ * /usr/lib/lxc/lxc-containers
+{{{
+# STOPOPTS are stop options.  The can be used for anything else to stop.
+#       If you want to kill containers fast, use -k
+STOPOPTS="-a -A -s"
+
+(snip)
+
+case "$1" in
+
+(snip)
+
+    stop)
+
+(snip)
+
+        "$bindir"/lxc-autostart $STOPOPTS $SHUTDOWNDELAY
+}}}
+ * man lxc-autostart
+{{{
+       -s,--shutdown
+              Request  a  clean  shutdown. If a [-t timeout] greater than 0 is
+              given and the container has not shut down within this period, it
+              will be killed as with the [-k kill] option.
+
+(snip)
+
+       -a,--all
+              Ignore lxc.group and select all auto-started containers.
+
+       -A,--ignore-auto
+              Ignore  the  lxc.start.auto  flag. Combined with -a, will select
+              all containers on the system.
+}}}
+
+ * mitty@lxc-host:~$ sudo systemctl enable --now lxc.service
+{{{
+Created symlink from /etc/systemd/system/multi-user.target.wants/lxc.service to /usr/lib/systemd/system/lxc.service.
+}}}
+ * mitty@lxc-host:~$ journalctl
+{{{
+Apr 19 23:22:34 lxc-host sudo[573]:    mitty : TTY=pts/0 ; PWD=/home/mitty ; USER=root ; COMMAND=/usr/bin/sh -c poweroff
+
+(snip)
+
+Apr 19 23:22:34 lxc-host systemd[1]: Stopped LXC Container Initialization and Autoboot Code.
+}}}
+ * mitty@test:~$ journalctl
+{{{
+Apr 19 23:22:34 test systemd[1]: Received SIGTERM.
+Apr 19 23:22:34 test systemd[1]: Reexecuting.
+Apr 19 23:22:34 test systemd[1]: systemd 229 running in system mode. (+PAM -AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN)
+Apr 19 23:22:34 test systemd[1]: Detected virtualization lxc.
+Apr 19 23:22:34 test systemd[1]: Detected architecture x86-64.
+Apr 19 23:22:34 test systemd[1]: Failed to install release agent, ignoring: No such file or directory
+Apr 19 23:22:34 test systemd[1]: Received SIGHUP.
+Apr 19 23:22:34 test systemd[1]: Received SIGRTMIN+4.
+Apr 19 23:22:34 test systemd[1]: Reloading.
+Apr 19 23:22:34 test systemd[1]: Stopped target Multi-User System.
+
+(snip)
+
+Apr 19 23:22:34 test systemd[1]: Shutting down.
+Apr 19 23:22:34 test systemd-journald[13]: Journal stopped
+}}}
+
+ = dhcpcd.service =
 
  == no valid interfaces found ==