zabbix server can't get correct hostname

[kelvin0431]

I'm using zabbix-2.4.6 on server side and zabbix-2.4.7 on agent side,
and I added below two server names in server's /etc/hosts

122.XXX.XXX.181 CHN-LN-p-9EB
122.XXX.XXX.207 CHN-LN-p-9Eb

but zabbix_server can't get the correct hostname, eg:

[root@zabbix_server ~]# zabbix_get -s CHN-LN-p-9Eb -k agent.hostname
CHN-LN-p-9EB
[root@zabbix_server ~]# zabbix_get -s CHN-LN-p-9Eb -k system.hostname
CHN-LN-p-9EB

however the IP works:

[root@zabbix_server ~]# zabbix_get -s 122.XXX.XXX.207 -k system.hostname
CHN-LN-p-9Eb
[root@zabbix_server ~]# zabbix_get -s 122.XXX.XXX.207 -k agent.hostname
CHN-LN-p-9Eb

both agents are configured "Connect to IP", any ideas now ??

[salzkrebs]

Hallo kelvin,

I think the problem lies in the Case of the Host entries.

RFC1035:
"Note that while upper and lower case letters are allowed in domain
names, no significance is attached to the case. That is, two names with
the same spelling but different case are to be treated as if identical."

You have 2 Hostnames which are identical and so only the first is taken.

Try to change the host entry of the second one and try it again.

Br Manuel

[kelvin0431]

Hallo kelvin,

I think the problem lies in the Case of the Host entries.

RFC1035:
"Note that while upper and lower case letters are allowed in domain
names, no significance is attached to the case. That is, two names with
the same spelling but different case are to be treated as if identical."

You have 2 Hostnames which are identical and so only the first is taken.

Try to change the host entry of the second one and try it again.

Br Manuel

Many thanks, Manuel
This problem really confused me for a while, finally resolved, thanks again.