Nagios Support Forum

Good morning,
I wanted to make a question in relation to check_nrpe.

In my monitoring had the error Error-could not complete SSL handshake.

I solved this error by editing the xinetd.conf, but before fix, I had the following problem:

In the /var /log /messages showed:


Jan 11 16:48:55 keronte xinetd[20990]: START: nrpe pid=15507 from=192.168.247.128
Jan 11 16:49:39 keronte nrpe[15455]: Error: Could not complete SSL handshake. 5
Jan 11 16:49:56 keronte xinetd[20990]: START: nrpe pid=15512 from=192.168.247.128
Jan 11 16:50:17 keronte xinetd[20990]: EXIT: nrpe status=0 pid=15455 duration=160(sec)
Jan 11 16:50:23 keronte xinetd[20990]: EXIT: nrpe status=0 pid=15456 duration=166(sec)
Jan 11 16:50:30 keronte xinetd[20990]: START: nrpe pid=15513 from=192.168.247.128
Jan 11 16:50:55 keronte xinetd[20990]: START: nrpe pid=15514 from=192.168.247.128
Jan 11 16:51:12 keronte xinetd[20990]: START: nrpe pid=15515 from=192.168.247.128
Jan 11 16:51:40 keronte xinetd[20990]: START: nrpe pid=15518 from=192.168.247.128
Jan 11 16:52:00 keronte xinetd[20990]: FAIL: nrpe per_source_limit from=192.168.247.128
Jan 11 16:55:06 keronte kernel: pam_timestamp_c invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0
Jan 11 16:55:07 keronte kernel:
Jan 11 16:55:07 keronte kernel: Call Trace:
Jan 11 16:55:08 keronte kernel: [<ffffffff800cb2ee>] out_of_memory+0x8e/0x2f3
Jan 11 16:55:08 keronte kernel: [<ffffffff8000f691>] __alloc_pages+0x27f/0x308
Jan 11 16:55:08 keronte kernel: [<ffffffff80013081>] __do_page_cache_readahead+0x96/0x17b
Jan 11 16:55:08 keronte kernel: [<ffffffff800139be>] filemap_nopage+0x14c/0x360
Jan 11 16:55:08 keronte kernel: [<ffffffff80008972>] __handle_mm_fault+0x1fd/0x103b
Jan 11 16:55:08 keronte kernel: [<ffffffff8006719c>] do_page_fault+0x499/0x842
Jan 11 16:55:08 keronte kernel: [<ffffffff8005ddf9>] error_exit+0x0/0x84
Jan 11 16:55:08 keronte kernel:
Jan 11 16:55:08 keronte kernel: Mem-info:
Jan 11 16:55:08 keronte kernel: Node 0 DMA per-cpu:
Jan 11 16:55:08 keronte kernel: cpu 0 hot: high 0, batch 1 used:0
Jan 11 16:55:08 keronte kernel: cpu 0 cold: high 0, batch 1 used:0
Jan 11 16:55:08 keronte kernel: Node 0 DMA32 per-cpu:
Jan 11 16:55:08 keronte kernel: cpu 0 hot: high 186, batch 31 used:26
Jan 11 16:55:08 keronte kernel: cpu 0 cold: high 62, batch 15 used:60
Jan 11 16:55:08 keronte kernel: Node 0 Normal per-cpu: empty
Jan 11 16:55:08 keronte kernel: Node 0 HighMem per-cpu: empty
Jan 11 16:55:08 keronte kernel: Free pages: 6948kB (0kB HighMem)
Jan 11 16:55:08 keronte kernel: Active:126982 inactive:109862 dirty:0 writeback:0 unstable:0 free:1737 slab:5732 mapped-file:8 mapped-anon:23733
0 pagetables:6242
Jan 11 16:55:08 keronte kernel: Node 0 DMA free:2948kB min:36kB low:44kB high:52kB active:0kB inactive:0kB present:9684kB pages_scanned:0 all_un
reclaimable? yes
Jan 11 16:55:08 keronte kernel: lowmem_reserve[]: 0 994 994 994
Jan 11 16:55:08 keronte kernel: Node 0 DMA32 free:4000kB min:4012kB low:5012kB high:6016kB active:507928kB inactive:439448kB present:1017952kB p
ages_scanned:3644398 all_unreclaimable? yes
Jan 11 16:55:08 keronte kernel: lowmem_reserve[]: 0 0 0 0
Jan 11 16:55:08 keronte kernel: Node 0 Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclai
mable? no
Jan 11 16:55:08 keronte kernel: lowmem_reserve[]: 0 0 0 0
Jan 11 16:55:08 keronte kernel: Node 0 HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_u
nreclaimable? no
Jan 11 16:55:08 keronte kernel: lowmem_reserve[]: 0 0 0 0
Jan 11 16:55:08 keronte kernel: Node 0 DMA: 5*4kB 4*8kB 5*16kB 2*32kB 3*64kB 2*128kB 1*256kB 0*512kB 2*1024kB 0*2048kB 0*4096kB = 2948kB
Jan 11 16:52:51 keronte xinetd[20990]: FAIL: nrpe per_source_limit from=192.168.247.128
Jan 11 16:55:08 keronte kernel: Node 0 DMA32: 60*4kB 0*8kB 31*16kB 12*32kB 1*64kB 0*128kB 1*256kB 1*512kB 0*1024kB 1*2048kB 0*4096kB = 4000kB
Jan 11 16:55:08 keronte xinetd[20990]: FAIL: nrpe per_source_limit from=192.168.247.128
Jan 11 16:55:08 keronte kernel: Node 0 Normal: empty
Jan 11 16:55:08 keronte xinetd[20990]: FAIL: nrpe per_source_limit from=192.168.247.128
Jan 11 16:55:08 keronte kernel: Node 0 HighMem: empty
Jan 11 16:55:08 keronte xinetd[20990]: FAIL: nrpe per_source_limit from=192.168.247.128
Jan 11 16:55:08 keronte nrpe[15504]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte nrpe[15507]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte nrpe[15506]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte nrpe[15495]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte kernel: 32 pagecache pages
Jan 11 16:55:08 keronte nrpe[15499]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte nrpe[15518]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte nrpe[15515]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte nrpe[15512]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte nrpe[15513]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte nrpe[15514]: Error: Could not complete SSL handshake. 5
Jan 11 16:55:08 keronte kernel: Swap cache: add 108455018, delete 108455018, find 202711122/216719708, race 0+206
Jan 11 16:55:08 keronte xinetd[20990]: EXIT: nrpe status=0 pid=15507 duration=374(sec)
Jan 11 16:55:08 keronte kernel: Free swap = 0kB
Jan 11 16:55:08 keronte xinetd[20990]: EXIT: nrpe status=0 pid=15512 duration=316(sec)
Jan 11 16:55:09 keronte kernel: Total swap = 786424kB


In this moment (16:55)tibco process shutdown.

Is it possible that this error Error-could not complete SSL handshake would cause?
Is it possible that NAgios, shutdown the proccess?

Thank you very much for you time.

Hi

Swap size recommended settings
M = Memory Size ，S = Swap Size
if M ＜ 2 ， 　S = M * 2
if 2 ≦ M ＜ 8， S = M
if 8 ≦ M ＜ 64 ， S = M * 0.5
if 64 ≦ M ， S = 4



Another,reboot you server then try it.

I would be surprised in nrpe was using that much swap. Your server is either short on ram or you have some runaway processes.