Version 3 (modified by mitty, 8 years ago) (diff) |
---|
- grub2 - Arch linux : pacman does not work when chrooting - Unix & Linux Stack Exchange
Remember to arch-chroot and not simply chroot - that way /proc will be populated and pacman will function as expected.
- Enabling LXC on Archlinux with systemd-networkd – Bryan's Blah Blog
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.
lxc.service
A stop job is running
- 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
- (lxc-devel) Shutting down containers properly
- (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.
- Host
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
- Arch Linux 4.4.5-1
- lxc 1:1.1.5-4
- dhcpcd 6.10.1-1
- # dhcpcd
dev: loaded udev no valid interfaces found no interfaces have a carrier forked to background, child pid 65
- # dhcpcd eth0
DUID 00:01:00:01:1e:8a:6a:5e:ba:4a:37:94:4a:9d eth0: IAID 16:b6:47:44 eth0: rebinding lease of 192.168.0.185 eth0: NAK: address in use from 192.168.0.1 eth0: message: address in use eth0: soliciting a DHCP lease eth0: soliciting an IPv6 router eth0: offered 192.168.0.172 from 192.168.0.1 eth0: probing address 192.168.0.172/24 eth0: leased 192.168.0.172 for 86400 seconds eth0: adding route to 192.168.0.0/24 eth0: adding default route via 192.168.0.1 forked to background, child pid 123
- LXCコンテナ内で、udevdが起動しないことが原因の模様
- strace -f dhcpcd
- コンテナホスト(検証はKVMゲストで行った)
access("/run/udev/control", F_OK) = 0 open("/sys/devices/virtual/net/lo/uevent", O_RDONLY|O_CLOEXEC) = 9 fstat(9, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0 fstat(9, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0 read(9, "INTERFACE=lo\nIFINDEX=1\n", 4096) = 23 read(9, "", 4096) = 0 read(9, "", 4096) = 0 close(9) = 0 open("/run/udev/data/n1", O_RDONLY|O_CLOEXEC) = 9 open("/sys/devices/pci0000:00/0000:00:03.0/virtio0/net/ens3/uevent", O_RDONLY|O_CLOEXEC) = 9 fstat(9, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0 fstat(9, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0 read(9, "INTERFACE=ens3\nIFINDEX=2\n", 4096) = 25 read(9, "", 4096) = 0 read(9, "", 4096) = 0 close(9) = 0 open("/run/udev/data/n2", O_RDONLY|O_CLOEXEC) = 9
- LXCコンテナ
access("/run/udev/control", F_OK) = -1 ENOENT (No such file or directory) open("/sys/devices/virtual/net/lo/uevent", O_RDONLY|O_CLOEXEC) = 9 fstat(9, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0 fstat(9, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0 read(9, "INTERFACE=lo\nIFINDEX=1\n", 4096) = 23 read(9, "", 4096) = 0 read(9, "", 4096) = 0 close(9) = 0 open("/run/udev/data/n1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) open("/sys/devices/virtual/net/eth0/uevent", O_RDONLY|O_CLOEXEC) = 9 fstat(9, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0 fstat(9, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0 read(9, "INTERFACE=eth0\nIFINDEX=6\n", 4096) = 25 read(9, "", 4096) = 0 read(9, "", 4096) = 0 close(9) = 0 open("/run/udev/data/n6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) write(2, "no valid interfaces found", 25) = 25 write(2, "\n", 1) = 1 write(1, "no interfaces have a carrier\n", 29) = 29
- [root@test /]# systemctl status systemd-udevd
● systemd-udevd.service - udev Kernel Device Manager Loaded: loaded (/usr/lib/systemd/system/systemd-udevd.service; static; vendor preset: disabled) Active: inactive (dead) Condition: start condition failed at Sat 2016-04-02 08:30:59 UTC; 5h 9min ago ConditionPathIsReadWrite=/sys was not met Docs: man:systemd-udevd.service(8) man:udev(7)
- [root@test /]# systemctl status systemd-udevd
- コンテナホスト(検証はKVMゲストで行った)
- arch:Linux_Containers#Systemd_considerations_.28required.29
- 上記を参考にsystemdの設定を行ったが効果なし
- arch:dhcpcd#dhcpcd_and_systemd_network_interfaces
dhcpcd.service can be Enabled without specifying an interface. This may, however, create a race condition at boot with systemd-udevd trying to apply a predictable network interface name:
error changing net interface name wlan0 to wlp4s0: Device or resource busy"
To avoid it, enable dhcpcd per interface it should bind to as described in dhcpcd#Running. The downside of the template unit is, however, that it does not support hot-plugging of a wired connection and will fail if the network cable is not connected. To work-around the failure, see dhcpcd#Timeout_delay.
- 古い情報
- Odd Bits dhcpcd[492]: eth0: if_init: Read-only file system
Dependency failed for dhcpcd on eth0.
- # systemctl start dhcpcd@eth0
A dependency job for dhcpcd@eth0.service failed. See 'journalctl -xe' for details.
- # journalctl -xe
Apr 10 20:00:56 test3 systemd[1]: Starting of sys-subsystem-net-devices-eth0.device not supported. -- Subject: Unit sys-subsystem-net-devices-eth0.device has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit sys-subsystem-net-devices-eth0.device has failed. -- -- The result is unsupported. Apr 10 20:00:56 test3 systemd[1]: Dependency failed for dhcpcd on eth0. -- Subject: Unit dhcpcd@eth0.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit dhcpcd@eth0.service has failed. -- -- The result is dependency. Apr 10 20:00:56 test3 systemd[1]: dhcpcd@eth0.service: Job dhcpcd@eth0.service/start failed with result 'dependency'.
- /usr/lib/systemd/system/dhcpcd@.service
[Unit] Description=dhcpcd on %I Wants=network.target Before=network.target BindsTo=sys-subsystem-net-devices-%i.device After=sys-subsystem-net-devices-%i.device [Service] Type=forking PIDFile=/run/dhcpcd-%I.pid ExecStart=/usr/bin/dhcpcd -q -w %I ExecStop=/usr/bin/dhcpcd -x %I [Install] WantedBy=multi-user.target
- BindsTo=, After=の行を削除することで対応可能
Attachments (1)
- lxc-A_stop_job_is_running.png (11.4 KB) - added by mitty 8 years ago.
Download all attachments as: .zip