[Solved] Zabbix-server startup error: cannot start alert manager service: Cannot bind socket to “/var/run/zabbix/zabbix_server_alerter.sock”: [13] Permission denied.

The following error is reported when starting zabbix-server:

29171:20180714:084911.367 cannot start alert manager service: Cannot bind socket to "/var/run/zabbix/zabbix_server_alerter.sock": [13] Permission denied.
29142:20180714:084911.368 One child process died (PID:29171,exitcode/signal:1). Exiting ...
29225:20180714:084923.611 cannot start preprocessing service: Cannot bind socket to "/var/run/zabbix/zabbix_server_preprocessing.sock": [13] Permission denied.
 29213:20180714:084923.613 server #18 started [poller #2]
 29195:20180714:084923.614 One child process died (PID:29225,exitcode/signal:1). Exiting ...
 29195:20180714:084925.615 syncing history data...
 29195:20180714:084925.615 syncing history data done
 29195:20180714:084925.615 syncing trend data...
 29195:20180714:084925.615 syncing trend data done
 29195:20180714:084925.615 Zabbix Server stopped. Zabbix 3.4.10 (revision 81503).

  The above is only pasted part of the error log.
The above reason is because SELINUX starts

SELinux status:                 enabled
SELinuxfs mount:                /sys/fs/selinux
SELinux root directory:         /etc/selinux
Loaded policy name:             targeted
Current mode:                   enforcing
Mode from config file:          disabled
Policy MLS status:              enabled
Policy deny_unknown status:     allowed
Max kernel policy version:      28

The solution is as follows:
vim /etc/selinux/config

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.

  Modify the SELINUX=disabledconfiguration file and close it permanently.
setenforce 0: Temporarily close SELINUX.

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