Zabbix version: 3.0.3 (zabbix-server-mysql)
OS: Ubuntu 14.04 Trusty
Number of hosts (enabled/disabled/templates): 28 / 0 / 57
Number of items (enabled/disabled/not supported): 1349 / 161 / 47
Number of triggers (enabled/disabled): 902 / 39
Required server performance, new values per second: 22.86
Zabbix server config:
I have template with 3 items like this: "net.tcp.port[<IP>,3128]". Template is applied to 10 servers.
Here is problem: when I enable this items, events like "zabbix-agent on <hostname> is not available for 2 minutes" start to randomly appear on 10 hosts where template is applied. Values on graph "Zabbix Server Preformance" (that represents ), representing zabbix[wcache,values], start going down from 19-19.5 to 16-17. Values representing zabbix[queue] stay at 0 as before.
When I disable items, problem disappears.
Zabbix server is not overloaded by I/O or CPU, there is plenty of free memory. Doesn't seem as hardware performance issue. Zabbix agents on hosts are available, I check it with "nc -vz <hostname> 10050".
Nothing abnormal appears in server log or agents logs on this 10 hosts.
I tried increasing "ulimit -n" for zabbix server process, it was increased: "cat /proc/<zabbix_worker_pid>/limits" now shows "Max open files 10240 10240 files". Didn't help.
I tried increasing number of StartPollers to 10 and 15 - didn't help either.
What is happening to server?
OS: Ubuntu 14.04 Trusty
Number of hosts (enabled/disabled/templates): 28 / 0 / 57
Number of items (enabled/disabled/not supported): 1349 / 161 / 47
Number of triggers (enabled/disabled): 902 / 39
Required server performance, new values per second: 22.86
Zabbix server config:
Code:
StartPollers=5 StartPollersUnreachable=2 StartTrappers=5 StartDiscoverers=3 StartHTTPPollers=5
Here is problem: when I enable this items, events like "zabbix-agent on <hostname> is not available for 2 minutes" start to randomly appear on 10 hosts where template is applied. Values on graph "Zabbix Server Preformance" (that represents ), representing zabbix[wcache,values], start going down from 19-19.5 to 16-17. Values representing zabbix[queue] stay at 0 as before.
When I disable items, problem disappears.
Zabbix server is not overloaded by I/O or CPU, there is plenty of free memory. Doesn't seem as hardware performance issue. Zabbix agents on hosts are available, I check it with "nc -vz <hostname> 10050".
Nothing abnormal appears in server log or agents logs on this 10 hosts.
I tried increasing "ulimit -n" for zabbix server process, it was increased: "cat /proc/<zabbix_worker_pid>/limits" now shows "Max open files 10240 10240 files". Didn't help.
I tried increasing number of StartPollers to 10 and 15 - didn't help either.
What is happening to server?
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