While logging into an OpenVZ server from node, I faced the above error.
# vzctl enter 101
enter into CT 101 failed
Unable to open pty: No such file or directory
This can be fixed by the following:
# vzctl exec 101 /sbin/MAKEDEV pty
# vzctl exec 101 /sbin/MAKEDEV tty
Today I faced an issue while logging into a VPS from node.
# vzctl enter 101
entered into CT 101
-bash: /bin/egrep: Too many open files in system
-bash: /bin/egrep: Too many open files in system
-bash: /bin/egrep: Too many open files in system
While checking the UBC parameters for the respective VPS server, by viewing the output of /proc/user_beancounters, I could see that the parameter ‘numfile’ was hitting failcount. Numfile is the parameter for number of open files in a VPS. Increasing the limit fixed the issue.
# vzctl set 101 –numfile 500000:500000 –save
UB limits were set successfully
Saved parameters for CT 101
If you get error “vzquota : (error) quota file is corrupted”
Use below commands,
# vzquota off 5000
vzquota : (error) quota file is corrupted
# vzquota drop 5000
# vzctl start 5000
Starting container …
Initializing quota …
Now wait for quota to get recreated
Loading Cpanel or WHM Link in browser throws this error :
–
Internal Server Error
more than 400 attempts to create a session failed
cpsrvd/11.25 Server at 1.2.3.4
–
Reason :
This is most of the time caused by the Inodes hitting their limit inside a VPS.
Resolution:
Check the Inodes usage on the VPS using below command :
df -i
If the usage is indeed 100% then increase the inodes for that vps using the following command in node
vzctl set <veid> –diskinodes barrier:limit –save
When you see a process running in the node and you need to know in which vps that process i actually running, please use the comman d “vzpid”
vzpid pid
vzpid 20489
Pid VEID Name
20489 157 cpanellogd
Here you can see that the process is running inside the vps 157.
sachinlinux 