Starting zabbix-server - cannot connect to preprocessing service

[Tariq Hasan]

Please see tail -f of the zabbix-server.log

21975:20191023:095849.104 server #149 started [vmware collector #126]
21977:20191023:095849.111 server #151 started [vmware collector #128]
22467:20191023:095849.125 cannot connect to preprocessing service: Cannot connect to service "preprocessing": [2] No such file or directory.
22468:20191023:095849.133 cannot connect to preprocessing service: Cannot connect to service "preprocessing": [2] No such file or directory.
22466:20191023:095849.145 cannot connect to preprocessing service: Cannot connect to service "preprocessing": [2] No such file or directory.
21803:20191023:095849.156 One child process died (PID:22467,exitcode/signal:1). Exiting ...
zabbix_server [21803]: Error waiting for process with PID 22467: [10] No child processes
21803:20191023:095853.404 syncing trend data...
21803:20191023:095853.411 syncing trend data done
21803:20191023:095853.417 Zabbix Server stopped. Zabbix 4.0.13 (revision 4e383bb6c5).

This was generated when I ran

zabbix_server -f -c /etc/zabbix/zabbix_server.conf

[Atsushi]

Check the Zabbix server log again for other errors or warnings. For example, is the message "Cannot bind socket" output?

[Tariq Hasan]

Nothing referring to bind

[dimir]

Looks like something removes the socket files that are needed by Zabbix server for IPC (inter-process communication). Could it be https://support.zabbix.com/browse/ZBX-15256 ? Are you sure nothing is touching the contens of directory configured as SocketDir ?

[Tariq Hasan]

I have these 2 files in /tmp:

srwx------ 1 zabbix zabbix 0 Oct 23 09:58 /tmp/zabbix_server_alerter.sock=
srwx------ 1 zabbix zabbix 0 Oct 23 09:58 /tmp/zabbix_server_preprocessing.sock=

[dimir]

Is SELinux running? Some permissions issue on accessing the files by Zabbix server?

[Tariq Hasan]

root@zabbixtest:~# getenforce
Disabled