new installtion fails to start zabbix-server

[cITc]

I have finally gotten Zabbix installed on a CentOS 7 platform with Mysql and Apache after having waded through mountains very poorly written instructions. However, even after finding and fixing problems I am still unable to get the zabbix server to start.
Following is a capture from the zabbix_server.log. Note that the PID and the Server error reference seem to change with every restart. That has left me completely baffled as to why this will not start. Can anyone shed some light on this please? (Log level set a debug level 4). I had successfully configured the web interface and can login into the zabbix web page but the dashboard always indicates the server is not running: Zabbix Server is Running No localhost:10051

5850:20200114:094606.982 Starting Zabbix Server. Zabbix 4.4.4 (revision 3131fdac04).
5850:20200114:094606.983 ****** Enabled features ******
5850:20200114:094606.983 SNMP monitoring: YES
5850:20200114:094606.983 IPMI monitoring: YES
5850:20200114:094606.983 Web monitoring: YES
5850:20200114:094606.983 VMware monitoring: YES
5850:20200114:094606.983 SMTP authentication: YES
5850:20200114:094606.983 ODBC: YES
5850:20200114:094606.983 SSH2 support: YES
5850:20200114:094606.983 IPv6 support: YES
5850:20200114:094606.983 TLS support: YES
5850:20200114:094606.983 ******************************
5850:20200114:094606.983 using configuration file: /etc/zabbix/zabbix_server.conf
5850:20200114:094606.993 current database version (mandatory/optional): 04040000/04040000
5850:20200114:094606.993 required mandatory version: 04040000
5850:20200114:094606.993 server #0 started [main process]
5854:20200114:094606.994 server #1 started [configuration syncer #1]
5869:20200114:094607.118 server #14 started [poller #1]
5871:20200114:094607.124 server #16 started [poller #3]
5872:20200114:094607.135 server #17 started [poller #4]
5874:20200114:094607.151 server #19 started [unreachable poller #1]
5870:20200114:094607.161 server #15 started [poller #2]
5866:20200114:094607.172 server #11 started [proxy poller #1]
5861:20200114:094607.179 server #6 started [history syncer #1]
5862:20200114:094607.180 server #7 started [history syncer #2]
5858:20200114:094607.181 server #3 started [timer #1]
5859:20200114:094607.181 server #4 started [http poller #1]
5863:20200114:094607.182 server #8 started [history syncer #3]
5864:20200114:094607.182 server #9 started [history syncer #4]
5865:20200114:094607.183 server #10 started [escalator #1]
5868:20200114:094607.187 server #13 started [task manager #1]
5873:20200114:094607.188 server #18 started [poller #5]
5875:20200114:094607.196 server #20 started [trapper #1]
5860:20200114:094607.201 server #5 started [discoverer #1]
5867:20200114:094607.211 server #12 started [self-monitoring #1]
5857:20200114:094607.212 server #2 started [housekeeper #1]
5876:20200114:094607.212 server #21 started [trapper #2]
5877:20200114:094607.217 server #22 started [trapper #3]
5891:20200114:094607.221 server #36 started [lld worker #2]
5881:20200114:094607.222 server #26 started [alert manager #1]
5881:20200114:094607.222 cannot initialize alert manager: Cannot bind socket to "/var/run/zabbix/zabbix_server_alerter.sock": [13] Permission denied.
5850:20200114:094607.228 One child process died (PID:5881,exitcode/signal:1). Exiting ...
zabbix_server [5850]: Error waiting for process with PID 5881: [10] No child processes
5850:20200114:094607.520 syncing trend data...
5850:20200114:094607.521 syncing trend data done
5850:20200114:094607.521 Zabbix Server stopped. Zabbix 4.4.4 (revision 3131fdac04).
5913:20200114:094617.736 Starting Zabbix Server. Zabbix 4.4.4 (revision 3131fdac04).
:

Thanks,
cITc

[Markku]

Hi, what kind of problems did you fix manually? I mean, the instructions in https://www.zabbix.com/download?zabb...ysql&ws=apache look quite straightforward, so if you had to fix something by yourself, maybe that caused the permission problem.

Markku

[Atsushi]

Have you enabled SELinux? If you have SELinux enabled, set the policy appropriately.

Manual:

https://www.zabbix.com/documentation/current/manual/installation/install_from_packages/rhel_centos