Public bug reported:
On a xenial system after an update to lxc, starting a container created
with the lxc-sshd template fails consistently. This does not occur with
2.0.7.
root@xenial:~# lxc-create -n mysshd -t /usr/share/lxc/templates/lxc-sshd
Generating public/private rsa key pair.
Your identification has been saved in
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_rsa_key.
Your public key has been saved in
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_rsa_key.pub.
The key fingerprint is:
SHA256:eR4Kv8JpWxe+RvIudD8LTuOYSGmLdnmX1CgB3Y/IHP4 root@xenial
The key's randomart image is:
+---[RSA 2048]----+
| . . |
| . o . |
| = o o |
| *.. . |
| . So+o |
| ++=Eo. |
| .+++BBo |
| .+B+oO=+o |
| ..o+++== .o |
+----[SHA256]-----+
Generating public/private dsa key pair.
Your identification has been saved in
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_dsa_key.
Your public key has been saved in
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_dsa_key.pub.
The key fingerprint is:
SHA256:Jmet2LLZMtolKBhfDQ/Za4i3yr0/993umj4Hq0D8Qyg root@xenial
The key's randomart image is:
+---[DSA 1024]----+
| |
| o |
| + . |
| . * o o |
|. . + E S o |
| + o + X + . |
|. o o + = o o |
| . + .+B.. ooo. |
| o ++==..oo=*+ |
+----[SHA256]-----+
root@xenial:~# lxc-start -n mysshd --logfile mysshd.log
lxc-start: tools/lxc_start.c: main: 366 The container failed to start.
lxc-start: tools/lxc_start.c: main: 368 To get more details, run the container
in foreground mode.
lxc-start: tools/lxc_start.c: main: 370 Additional information can be obtained
by setting the --logfile and --logpriority options.
root@xenial:~# cat mysshd.log
lxc-start 20170622214710.829 ERROR lxc_conf -
conf.c:lxc_setup_dev_console:1473 - Read-only file system - error unlinking
/usr/lib/x86_64-linux-gnu/lxc/dev/console
lxc-start 20170622214710.829 ERROR lxc_conf - conf.c:lxc_setup:4055 -
failed to setup the console for 'mysshd'
lxc-start 20170622214710.829 ERROR lxc_start - start.c:do_start:811 -
Failed to setup container "mysshd".
lxc-start 20170622214710.829 ERROR lxc_sync - sync.c:__sync_wait:57 -
An error occurred in another process (expected sequence number 3)
lxc-start 20170622214710.868 ERROR lxc_start -
start.c:__lxc_start:1358 - Failed to spawn container "mysshd".
lxc-start 20170622214715.901 ERROR lxc_start_ui -
tools/lxc_start.c:main:366 - The container failed to start.
lxc-start 20170622214715.901 ERROR lxc_start_ui -
tools/lxc_start.c:main:368 - To get more details, run the container in
foreground mode.
lxc-start 20170622214715.901 ERROR lxc_start_ui -
tools/lxc_start.c:main:370 - Additional information can be obtained by setting
the --logfile and --logpriority options.
root@xenial:~# dpkg -l '*lxc*'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version
Architecture Description
+++-======================================-========================-========================-==================================================================================
un liblxc0 <none> <none>
(no description available)
ii liblxc1 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools (library)
ii lxc 2.0.8-0ubuntu1~16.04.2 all
Transitional package for lxc1
ii lxc-common 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools (common tools)
ii lxc-templates 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools (templates)
ii lxc1 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools
ii lxcfs 2.0.6-0ubuntu1~16.04.1 amd64
FUSE based filesystem for LXC
un lxctl <none> <none>
(no description available)
ii python3-lxc 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools (Python 3.x bindings)
Removing the addition of the bind-mount for /dev to the config from the
template seems to move the start along, yet implications of doing this
are unknown.
** Affects: lxc (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1699903
Title:
lxc-sshd won't start with 2.0.8
Status in lxc package in Ubuntu:
New
Bug description:
On a xenial system after an update to lxc, starting a container
created with the lxc-sshd template fails consistently. This does not
occur with 2.0.7.
root@xenial:~# lxc-create -n mysshd -t /usr/share/lxc/templates/lxc-sshd
Generating public/private rsa key pair.
Your identification has been saved in
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_rsa_key.
Your public key has been saved in
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_rsa_key.pub.
The key fingerprint is:
SHA256:eR4Kv8JpWxe+RvIudD8LTuOYSGmLdnmX1CgB3Y/IHP4 root@xenial
The key's randomart image is:
+---[RSA 2048]----+
| . . |
| . o . |
| = o o |
| *.. . |
| . So+o |
| ++=Eo. |
| .+++BBo |
| .+B+oO=+o |
| ..o+++== .o |
+----[SHA256]-----+
Generating public/private dsa key pair.
Your identification has been saved in
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_dsa_key.
Your public key has been saved in
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_dsa_key.pub.
The key fingerprint is:
SHA256:Jmet2LLZMtolKBhfDQ/Za4i3yr0/993umj4Hq0D8Qyg root@xenial
The key's randomart image is:
+---[DSA 1024]----+
| |
| o |
| + . |
| . * o o |
|. . + E S o |
| + o + X + . |
|. o o + = o o |
| . + .+B.. ooo. |
| o ++==..oo=*+ |
+----[SHA256]-----+
root@xenial:~# lxc-start -n mysshd --logfile mysshd.log
lxc-start: tools/lxc_start.c: main: 366 The container failed to start.
lxc-start: tools/lxc_start.c: main: 368 To get more details, run the
container in foreground mode.
lxc-start: tools/lxc_start.c: main: 370 Additional information can be
obtained by setting the --logfile and --logpriority options.
root@xenial:~# cat mysshd.log
lxc-start 20170622214710.829 ERROR lxc_conf -
conf.c:lxc_setup_dev_console:1473 - Read-only file system - error unlinking
/usr/lib/x86_64-linux-gnu/lxc/dev/console
lxc-start 20170622214710.829 ERROR lxc_conf - conf.c:lxc_setup:4055
- failed to setup the console for 'mysshd'
lxc-start 20170622214710.829 ERROR lxc_start - start.c:do_start:811
- Failed to setup container "mysshd".
lxc-start 20170622214710.829 ERROR lxc_sync - sync.c:__sync_wait:57
- An error occurred in another process (expected sequence number 3)
lxc-start 20170622214710.868 ERROR lxc_start -
start.c:__lxc_start:1358 - Failed to spawn container "mysshd".
lxc-start 20170622214715.901 ERROR lxc_start_ui -
tools/lxc_start.c:main:366 - The container failed to start.
lxc-start 20170622214715.901 ERROR lxc_start_ui -
tools/lxc_start.c:main:368 - To get more details, run the container in
foreground mode.
lxc-start 20170622214715.901 ERROR lxc_start_ui -
tools/lxc_start.c:main:370 - Additional information can be obtained by setting
the --logfile and --logpriority options.
root@xenial:~# dpkg -l '*lxc*'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version
Architecture Description
+++-======================================-========================-========================-==================================================================================
un liblxc0 <none> <none>
(no description available)
ii liblxc1 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools (library)
ii lxc 2.0.8-0ubuntu1~16.04.2 all
Transitional package for lxc1
ii lxc-common 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools (common tools)
ii lxc-templates 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools (templates)
ii lxc1 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools
ii lxcfs 2.0.6-0ubuntu1~16.04.1 amd64
FUSE based filesystem for LXC
un lxctl <none> <none>
(no description available)
ii python3-lxc 2.0.8-0ubuntu1~16.04.2 amd64
Linux Containers userspace tools (Python 3.x bindings)
Removing the addition of the bind-mount for /dev to the config from
the template seems to move the start along, yet implications of doing
this are unknown.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1699903/+subscriptions
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