zabbix on low powered board

[wpervaiz]

so i installed zabbix on a low powered board. This will be running a zabbix proxy.

Installation and configuration went fine. Proxy reports back to server perfectly.

The only trouble I'm having now is that some pings are being reported falsely. Certain devices return 0 when ping'ed, but I know those devices are up. The devices come back up in 10 minutes, and then go back down. This keeps happening all day.

I was assuming the board didnt have enough juice, but using the "top" command (its ubuntu) zabbix proxy is using no more than 5% of cpu and 1 % of memory. ntop reports network usage as normal as well. its flash memory so I'm certain its not read/write speeds that are causing the problem.

Its "wrong" ping responses more than "missing" ping responses. i.e. devices are reported as down.

From the config file, I changed forked instances to minimums (i.e. 1) but still no luck. Increased timeout to 15 seconds. still no go.

Any ideas? has anyone experienced this before ?

thanks guys !

[wpervaiz]

bump, anyone ??

[wpervaiz]

ok, so i figured out its fping with the -s option thats causing the problem.

how do i disable the -s option or add that to my fping file ??

thanks !

[wpervaiz]

this is what i get when i do something like:

fping -s www.google.com

www.google.com is alive

1 targets
1 alive
0 unreachable
0 unknown addresses

0 timeouts (waiting for response)
1 ICMP Echos sent
1 ICMP Echo Replies received
0 other ICMP received

*** buffer overflow detected ***: fping terminated
======= Backtrace: =========
/lib/libc.so.6(__fortify_fail+0x44)[0x40104a2c]
/lib/libc.so.6(__vsprintf_chk+0x88)[0x40101c7c]
======= Memory map: ========
00008000-0000f000 r-xp 00000000 fd:01 21177 /usr/bin/fping
00016000-00017000 r-xp 00006000 fd:01 21177 /usr/bin/fping
00017000-00018000 rwxp 00007000 fd:01 21177 /usr/bin/fping
00018000-0003a000 rwxp 00000000 00:00 0 [heap]
40000000-4001d000 r-xp 00000000 fd:01 1140 /lib/ld-2.9.so
4001d000-4001f000 rwxp 00000000 00:00 0
40023000-40024000 rwxp 00000000 00:00 0
40024000-40025000 r-xp 0001c000 fd:01 1140 /lib/ld-2.9.so
40025000-40026000 rwxp 0001d000 fd:01 1140 /lib/ld-2.9.so
40026000-40147000 r-xp 00000000 fd:01 1322 /lib/libc-2.9.so
40147000-4014f000 ---p 00121000 fd:01 1322 /lib/libc-2.9.so
4014f000-40151000 r-xp 00121000 fd:01 1322 /lib/libc-2.9.so
40151000-40152000 rwxp 00123000 fd:01 1322 /lib/libc-2.9.so
40152000-40155000 rwxp 00000000 00:00 0
40155000-4015e000 r-xp 00000000 fd:01 1310 /lib/libnss_files-2.9.so
4015e000-40166000 ---p 00009000 fd:01 1310 /lib/libnss_files-2.9.so
40166000-40167000 r-xp 00009000 fd:01 1310 /lib/libnss_files-2.9.so
40167000-40168000 rwxp 0000a000 fd:01 1310 /lib/libnss_files-2.9.so
befad000-befc2000 rw-p 00000000 00:00 0 [stack]
Aborted