New install of Zabbix 2.0.4 on CentOS 6.3 from yum packages (epel repo). All seemed to be working well until I had to reboot the server. Now the zabbix-server daemon wont start, I assume because zabbix_server.pid cannot be created for whatever reason.
From the log file /var/log/zabbix_server.log
From /etc/zabbix/zabbix_server.conf
[root@server zabbix]#service zabbix-server start
Starting Zabbix server:[ OK zabbix_server [3108]: cannot open [/var/log/zabbix/zabbix_server.log]: [13] Permission denied
Starting Zabbix server:[ OK zabbix_server [3108]: cannot open [/var/log/zabbix/zabbix_server.log]: [13] Permission denied
zabbix_server [2959]: cannot create PID file [/var/run/zabbix/zabbix_server.pid]: [13] Permission denied
[root@server zabbix]# pwd
/var/run/zabbix
[root@server zabbix]# ls -la
total 12
drwxrwxr-x. 2 zabbix zabbix 4096 Jan 26 05:16 .
drwxr-xr-x. 32 root root 4096 Jan 26 05:16 ..
-rw-rw-r-- 1 zabbix zabbix 4 Jan 26 05:16 zabbix_agentd.pid
[root@server zabbix]#
[root@server zabbix]# pwd
/var/log/zabbix
[root@server zabbix]# ls -la
total 72
drwxrwxr-x. 2 zabbix zabbix 4096 Dec 8 05:40 .
drwxr-xr-x. 15 root root 4096 Jan 26 05:16 ..
-rwxrwxrwx 1 zabbix zabbix 4322 Jan 26 05:16 zabbix_agentd.log
-rw-rw-r--. 1 zabbix zabbix 51870 Jan 26 05:41 zabbix_server.log
[root@server zabbix]#
[root@server zabbix]# ps -A | grep zabbix
2145 ? 00:00:00 zabbix_agentd
2156 ? 00:00:00 zabbix_agentd
2157 ? 00:00:00 zabbix_agentd
2158 ? 00:00:00 zabbix_agentd
2159 ? 00:00:00 zabbix_agentd
2160 ? 00:00:00 zabbix_agentd
[root@server zabbix]#
/var/run/zabbix
[root@server zabbix]# ls -la
total 12
drwxrwxr-x. 2 zabbix zabbix 4096 Jan 26 05:16 .
drwxr-xr-x. 32 root root 4096 Jan 26 05:16 ..
-rw-rw-r-- 1 zabbix zabbix 4 Jan 26 05:16 zabbix_agentd.pid
[root@server zabbix]#
[root@server zabbix]# pwd
/var/log/zabbix
[root@server zabbix]# ls -la
total 72
drwxrwxr-x. 2 zabbix zabbix 4096 Dec 8 05:40 .
drwxr-xr-x. 15 root root 4096 Jan 26 05:16 ..
-rwxrwxrwx 1 zabbix zabbix 4322 Jan 26 05:16 zabbix_agentd.log
-rw-rw-r--. 1 zabbix zabbix 51870 Jan 26 05:41 zabbix_server.log
[root@server zabbix]#
[root@server zabbix]# ps -A | grep zabbix
2145 ? 00:00:00 zabbix_agentd
2156 ? 00:00:00 zabbix_agentd
2157 ? 00:00:00 zabbix_agentd
2158 ? 00:00:00 zabbix_agentd
2159 ? 00:00:00 zabbix_agentd
2160 ? 00:00:00 zabbix_agentd
[root@server zabbix]#
### Option: PidFile
# Name of PID file.
#
# Mandatory: no
# Default:
PidFile=/var/run/zabbix/zabbix_server.pid
# Name of PID file.
#
# Mandatory: no
# Default:
PidFile=/var/run/zabbix/zabbix_server.pid

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