vps ssh not starting after update in openvz

if you face this condition, you are almost doomed for reinstall, but wait!

updated:

edit /vz/private/[vbox#]/etc/init/ssh.conf,

comment off oom never:

#oom never

reboot the vps, it shall work :)

or else, try alternative below:

---------------------

there is a way to solve this..

1st, create a file in /etc/init.d/sshstart

fill it up with:

sh /etc/init.d/ssh start

then run

/sbin/vzctl runscript [vps container #] /vz/private/[vpscontainer#]/etc/init.d/sshstart

if you get any error, this might give you lead on how to solve it.

but as for my condition, i found the problem in the /var/log/daemon.log to refer to:

init: ssh main process (21717) terminated with status 255

Failed to spawn ssh pre-start process: unable to set oom adjustment: Operation not permitted

Someone suggested that the issue is because the ssh is not launched after network, therefore to fix it, you will need to edit /etc/ssh/sshd_config and enable the line ListenAddress 0.0.0.0

But in my case, it didnt work. so ive done a work around to start it via vzctl.

If you dont know your vps container #, its in

ls /vz/private/

References:

http://blog.roberthallam.org/2010/06/sshd-not-running-at-startup/

https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/707098

openvz stop running

Sometimes, updating the o/s of the dedicated server with openvz installed, might trigger change of default kernel to boot from.

To fix it...

sudo vi /boot/grub/menu.lst

Change the line to point to the index of the openvz kernel. the starting index will be 0

Example:

default 1

to:

default 0

Userful command:

/usr/sbin/vzlist -a

/usr/sbin/vzctl

uname -a

openvz meta data checksum failed

If you face checksum failed when trying to sudo yum update, try this:

sudo yum clean all

sudo yum makecache