On 12/08/2015 11:10 AM, Peter Steele wrote:
On 12/08/2015 08:00 AM, Serge Hallyn wrote:
Ok, can you change the launch command in the scripts to
lxc-start -n $containername -L /tmp/$containername.cout -l trace -o
/tmp/$containername.dout -- /sbin/init log_target=console
log_level=debug
The console output will go into the .cout file and lxc debug output
into .dout.
I did another test and hit the original sshd-keygen error on one of my
containers. The /var/log/messages file for that container reported the
following:
Dec 8 11:58:13 pws-vm-04 systemd: Starting OpenSSH Server Key Generation...
Dec 8 11:58:13 pws-vm-04 systemd: Failed at step CGROUP spawning
/usr/sbin/sshd-keygen: No such file or directory
Dec 8 11:58:13 pws-vm-04 systemd: sshd-keygen.service: main process
exited, code=exited, status=219/CGROUP
Dec 8 11:58:13 pws-vm-04 systemd: Failed to start OpenSSH Server Key
Generation.
Dec 8 11:58:13 pws-vm-04 systemd: Unit sshd-keygen.service entered
failed state.
Dec 8 11:58:16 pws-vm-04 systemd: Starting OpenSSH server daemon...
Dec 8 11:58:16 pws-vm-04 systemd: Started OpenSSH server daemon.
Dec 8 11:58:16 pws-vm-04 sshd: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 8 11:58:16 pws-vm-04 sshd: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 8 11:58:16 pws-vm-04 sshd: Could not load host key:
/etc/ssh/ssh_host_ed25519_key
Dec 8 11:58:58 pws-vm-04 sshd[722]: error: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 8 11:58:58 pws-vm-04 sshd[722]: error: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 8 11:58:58 pws-vm-04 sshd[722]: error: Could not load host key:
/etc/ssh/ssh_host_ed25519_key
Dec 8 11:59:00 pws-vm-04 sshd[724]: error: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 8 11:59:00 pws-vm-04 sshd[724]: error: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 8 11:59:00 pws-vm-04 sshd[724]: error: Could not load host key:
/etc/ssh/ssh_host_ed25519_key
Dec 8 11:59:00 pws-vm-04 sshd[726]: error: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 8 11:59:00 pws-vm-04 sshd[726]: error: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 8 11:59:00 pws-vm-04 sshd[726]: error: Could not load host key:
/etc/ssh/ssh_host_ed25519_key
Dec 8 11:59:00 pws-vm-04 sshd[728]: error: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 8 11:59:00 pws-vm-04 sshd[728]: error: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 8 11:59:00 pws-vm-04 sshd[728]: error: Could not load host key:
/etc/ssh/ssh_host_ed25519_key
Dec 8 11:59:00 pws-vm-04 sshd[730]: error: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 8 11:59:00 pws-vm-04 sshd[730]: error: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 8 11:59:00 pws-vm-04 sshd[730]: error: Could not load host key:
/etc/ssh/ssh_host_ed25519_key
Dec 8 11:59:02 pws-vm-04 sshd[831]: error: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 8 11:59:02 pws-vm-04 sshd[831]: error: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 8 11:59:02 pws-vm-04 sshd[831]: error: Could not load host key:
/etc/ssh/ssh_host_ed25519_key
Dec 8 11:59:02 pws-vm-04 sshd[833]: error: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 8 11:59:02 pws-vm-04 sshd[833]: error: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 8 11:59:02 pws-vm-04 sshd[833]: error: Could not load host key:
/etc/ssh/ssh_host_ed25519_key
The .cout file for this container looked normal except, of course, for
some ssh related messages:
Starting OpenSSH Server Key Generation...
FAILED Failed to start OpenSSH Server Key Generation.
See 'systemctl status sshd-keygen.service' for details.
Starting OpenSSH server daemon...
The .dout file had no errors related to sshd in this particular test.
In another test, I tried creating several containers with the command
lxc-create -n testN -t download -- -d centos -r 7 -a amd64
and then started them all in the same manner as my other tests using:
for vm in `lxc-ls`; do lxc-start -n $vm -L /tmp/$vm.cout -l trace -o
/tmp/$vm.dout -- /sbin/init log_target=console log_level=debug; done
In this case of course the containers are using the stock downloaded
CentOS 7 image instead of my custom image. I was unable to reproduce the
systemd error through multiple start/stop tests of my containers. They
always started up without any complaints. Granted, these stock images
are simpler than my custom images, but this seems to point to something
in my image that's causing this issue. At least that gives me a bit to
go on, although it's hard to understand what additional rpm modules
would cause systemd to behave this way during bootup.
Peter
_______________________________________________
lxc-users mailing list
[email protected]
http://lists.linuxcontainers.org/listinfo/lxc-users
