[Samba] memory usage and error with samba 4.4.5

Trenta sis trenta.sis at gmail.com
Wed Jan 11 07:58:10 UTC 2017


Hi,

I have a samba 4 AD, running fine but last night detected that during some
minuts something was not ok,,, I have detected that during some minutes in
samba 4 AD server was a high load average and some services were not
working correctly, It seems that this has generated and increment of swap
that is generated by samba process.

Logs and info collected:

Jan 11 04:44:02 server winbindd[25326]: [2017/01/11 04:43:36.043863,  0]
../source3/rpc_server/rpc_ncacn_np.c:990(rpc_pipe_open_external)
Jan 11 04:44:02 server winbindd[25326]:   Failed to bind external pipe.
Jan 11 04:44:03 server winbindd[25326]: [2017/01/11 04:44:02.572304,  0]
../source3/winbindd/winbindd_cm.c:1840(wb_open_internal_pipe)
Jan 11 04:44:03 server winbindd[25326]:   open_internal_pipe: Could not
connect to lsarpc pipe: NT_STATUS_IO_TIMEOUT
Jan 11 04:44:14 server winbindd[25326]: [2017/01/11 04:44:14.845333,  0]
../source3/winbindd/winbindd_dual.c:107(child_write_response)
Jan 11 04:44:14 server winbindd[25326]:   Could not write result
Jan 11 04:44:15 server winbindd[25332]: [2017/01/11 04:44:15.065815,  0]
../source3/winbindd/winbindd_dual.c:107(child_write_response)
Jan 11 04:44:15 server winbindd[25332]:   Could not write result
Jan 11 04:44:25 server smbd[25379]: [2017/01/11 04:44:25.333583,  0]
../libcli/smb/smb_signing.c:138(smb_signing_good)
Jan 11 04:44:25 server smbd[25374]: [2017/01/11 04:44:25.292418,  0]
../libcli/smb/smb_signing.c:138(smb_signing_good)
Jan 11 04:44:25 server smbd[25379]:   smb_signing_good: BAD SIG: seq 2
Jan 11 04:44:25 server smbd[25374]:   smb_signing_good: BAD SIG: seq 2
Jan 11 04:44:25 server smbd[25379]: [2017/01/11 04:44:25.785467,  0]
../source3/smbd/process.c:572(receive_smb_talloc)
Jan 11 04:44:25 server smbd[25374]: [2017/01/11 04:44:25.785473,  0]
../source3/smbd/process.c:572(receive_smb_talloc)
Jan 11 04:44:25 server smbd[25379]:   receive_smb: SMB Signature
verification failed on incoming packet!
Jan 11 04:44:25 server smbd[25374]:   receive_smb: SMB Signature
verification failed on incoming packet!
Jan 11 04:44:25 server smbd[25380]: [2017/01/11 04:44:25.591664,  0]
../libcli/smb/smb_signing.c:138(smb_signing_good)
Jan 11 04:44:25 server smbd[25380]:   smb_signing_good: BAD SIG: seq 2
Jan 11 04:44:25 server smbd[25380]: [2017/01/11 04:44:25.787546,  0]
../source3/smbd/process.c:572(receive_smb_talloc)
Jan 11 04:44:25 server smbd[25380]:   receive_smb: SMB Signature
verification failed on incoming packet!
Jan 11 04:44:26 server smbd[25398]: [2017/01/11 04:44:26.222968,  0]
../libcli/smb/smb_signing.c:138(smb_signing_good)
Jan 11 04:44:26 server smbd[25398]:   smb_signing_good: BAD SIG: seq 2
Jan 11 04:44:26 server smbd[25398]: [2017/01/11 04:44:26.223067,  0]
../source3/smbd/process.c:572(receive_smb_talloc)
Jan 11 04:44:26 server smbd[25398]:   receive_smb: SMB Signature
verification failed on incoming packet!
Jan 11 04:44:26 server smbd[25409]: [2017/01/11 04:44:26.230283,  0]
../libcli/smb/smb_signing.c:138(smb_signing_good)
Jan 11 04:44:26 server smbd[25409]:   smb_signing_good: BAD SIG: seq 2
Jan 11 04:44:26 server smbd[25409]: [2017/01/11 04:44:26.230360,  0]
../source3/smbd/process.c:572(receive_smb_talloc)
Jan 11 04:44:26 server smbd[25409]:   receive_smb: SMB Signature
verification failed on incoming packet!


root at server:~# ps aux |grep 30686
root     11092  0.0  0.1  12728  2160 pts/0    S+   08:48   0:00 grep 30686
root     30686 21.2 27.2 1129996 561608 ?      R     2016 6446:26
/usr/local/samba/sbin/samba -D
root at server:~# ps aux |grep 30688
root     11105  0.0  0.1  12728  2060 pts/0    S+   08:48   0:00 grep 30688
root     30688  0.7 18.1 1321680 372960 ?      S     2016 221:15
/usr/local/samba/sbin/samba -D

# sar -q
04:25:01 AM         1       134      1.18      1.28      1.12         0
04:35:01 AM         0       135      0.77      1.05      1.12         0
04:45:02 AM         0       135     11.62     13.45      6.75         0
04:55:01 AM         0       133      0.17      2.01      3.66         0
05:05:01 AM         0       134      0.13      0.47      2.04         0

# free -m
             total       used       free     shared    buffers     cached
Mem:          2010       1585        425         18         41        229
-/+ buffers/cache:       1314        695
Swap:         2076        538       1538

What is the problem?


Thanks


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