I ran into a problem, zabbix together properly, but hosts Z is red

[[email protected]]

[root@htuidc ~]# netstat -ln|grep 10050
tcp        0      0 0.0.0.0:10050               0.0.0.0:*                   LISTEN      
[root@htuidc ~]# ps aux|grep zabbix
root     12652  0.0  0.0  61220   752 pts/1    S+   13:59   0:00 grep zabbix
zabbix   25166  0.0  0.0  15592   648 ?        S    Aug09   0:00 /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/conf/zabbix_agentd.conf
zabbix   25167  0.0  0.0  15592  1100 ?        S    Aug09   0:03 /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/conf/zabbix_agentd.conf
zabbix   25168  0.0  0.0  15612   980 ?        S    Aug09   2:10 /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/conf/zabbix_agentd.conf
zabbix   25169  0.0  0.0  15612   980 ?        S    Aug09   2:12 /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/conf/zabbix_agentd.conf
zabbix   25170  0.0  0.0  15612   980 ?        S    Aug09   2:10 /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/conf/zabbix_agentd.conf
zabbix   25171  0.0  0.0  15612   716 ?        S    Aug09   0:01 /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/conf/zabbix_agentd.conf
[root@htuidc ~]# tail -f /tmp/zabbix_agentd.log 
 25171:20130825:104005.319 active check configuration update from [115.182.11.11:10051] started to fail (cannot connect to [[115.182.11.11]:10051]: [4] Interrupted system call)
 25171:20130825:104105.438 active check configuration update from [115.182.11.11:10051] is working again
 25171:20130825:185523.865 active check configuration update from [115.182.11.11:10051] started to fail (cannot connect to [[115.182.11.11]:10051]: [4] Interrupted system call)
 25171:20130825:185623.978 active check configuration update from [115.182.11.11:10051] is working again
 25171:20130825:201829.714 active check configuration update from [115.182.11.11:10051] started to fail (ZBX_TCP_READ() failed: [4] Interrupted system call)
 25171:20130825:201929.837 active check configuration update from [115.182.11.11:10051] is working again
 25171:20130825:214735.047 active check configuration update from [115.182.11.11:10051] started to fail (ZBX_TCP_READ() failed: [4] Interrupted system call)
 25171:20130825:214835.171 active check configuration update from [115.182.11.11:10051] is working again
 25171:20130825:221238.375 active check configuration update from [115.182.11.11:10051] started to fail (ZBX_TCP_READ() failed: [4] Interrupted system call)
 25171:20130825:221338.495 active check configuration update from [115.182.11.11:10051] is working again

zabbix_server and zabbix_agentd Everything is normal;
but hosts Z is red.
Some other hosts also have this problem.

[Heilig]

If move mouse over red "x", what error can you see?
Do you use active or passive agents?
Telnet zabbix server <-> zabbix agent works?
Zabbix agents configured correctly (Server, Hostname/ServerActive, etc)?

[[email protected]]

If move mouse over red "x", what error can you see?
Do you use active or passive agents?
Telnet zabbix server <-> zabbix agent works?
Zabbix agents configured correctly (Server, Hostname/ServerActive, etc)?

Thanks for your reply.
Move mouse over red "z",does not display any information.
I use the passive agent.
Telnet zabbix server <-> zabbix agent should no problem,I have already repaired.
Zabbix agents configured correctly.
At the agent, the first shutdown ZABBIX agentd and then start, can solve this problem.But after a few days, will appear this problem.
I suppose the reason is, frequent unreachable.

[Heilig]

Maybe you have big queue or zabbix server overloaded? Check 4 graphs from "Template App Zabbix Server" (http://blog.zabbix.com/monitoring-ho...esses-are/457/).

[[email protected]]

Maybe you have big queue or zabbix server overloaded? Check 4 graphs from "Template App Zabbix Server" (http://blog.zabbix.com/monitoring-ho...esses-are/457/).

Thank！
Yes, I have a big queue,from 4 graph to see, zabbix is good.
Big queue can lead hosts 'Z' logo display Error?

[[email protected]]

This is queue graph.

[Heilig]

Can you also show "Zabbix data gathering process busy %" graph and zabbix_server.conf?

[[email protected]]

Can you also show "Zabbix data gathering process busy %" graph and zabbix_server.conf?

OK.

[root@s4 ~]# grep -E -v '^#|^$' /usr/local/zabbix/etc/zabbix_server.conf
LogFile=/tmp/zabbix_server.log
DBName=zabbix
DBUser=root
DBSocket=/tmp/mysql.sock
StartPollers=30
StartPollersUnreachable=30
StartPingers=5
AlertScriptsPath=/usr/local/fetion/
LogSlowQueries=1000

[Heilig]

looks good, please show zabbix_agentd.conf

[[email protected]]

looks good, please show zabbix_agentd.conf

Yes.

[root@localhost ~]# grep -E -v '^#|^$' /usr/local/zabbix/conf/zabbix_agentd.conf 
LogFile=/tmp/zabbix_agentd.log
Server=115.182.41.12
ServerActive=115.182.41.12
Hostname=A-s32
[root@localhost ~]#

[Heilig]

What IP of zabbix server (115.182.11.11 or 115.182.41.12)?
Which version zabbix server and agents you are using?
What's in a log file of zabbix server (for A-s32)?