Issue Failed to reset cache for the instance #4: timeout: fork system call failed: Resource temporarily unavailable

[Maik20]

Server operating system version

centOS7

Plesk version and microupdate number

18.0.52

Hi,

i found today this message in my email. I tried to login via ssh using the website user name and got:

fork: retry: No child processes

if i login via ssh using my admin account i can login without any errors

First i run top and got:

top - 08:22:45 up 254 days, 22:34, 1 user, load average: 0.02, 0.07, 0.06
Tasks: 215 total, 1 running, 214 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.1 us, 0.1 sy, 0.0 ni, 99.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 23.0/32779576 [||||||||||||||||||||||| ]
KiB Swap: 0.0/0 [

There seems to be enough ram.

Then i run df -h:

Filesystem Size Used Avail Use% Mounted on
devtmpfs 16G 0 16G 0% /dev
tmpfs 16G 0 16G 0% /dev/shm
tmpfs 16G 1.6G 15G 11% /run
tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/sda1 400G 260G 141G 65% /
tmpfs 3.2G 0 3.2G 0% /run/user/1000
tmpfs 3.2G 0 3.2G 0% /run/user/10001
tmpfs 3.2G 0 3.2G 0% /run/user/995
tmpfs 3.2G 0 3.2G 0% /run/user/987

There is enough disk space.

What else can i check, where is the problem?

 

[Peter Debik]

Please check if the website that triggered the message uses a short open tag (<?) instead of <?php. If so, change it to: <?php