Debian Jessie: pure-ftpd-mysql stops after some hours or days

Hi, I run ISPConfig3 on a debian jessie, upgraded from a wheezy installation on various servers and I face this issue only on the production ones although the setup is identical with my 2 development machines -- even the hardware on one of them. What is happening is that pure-ftpd-mysql crashes/stops after a couple of days and makes ISPconfig3 show the red warning that one of the services is offline. Connections using FTP or FTPS do not work of course and I face this some months now, I was hoping it would be a bug of that software but it is still not working well.

Here is what I get when it is stopped if I check the service:

Code:

~# systemctl -n 500 status pure-ftpd-mysql.service
● pure-ftpd-mysql.service - (null)
   Loaded: loaded (/etc/init.d/pure-ftpd-mysql)
   Active: active (exited) since Mon 2016-07-25 21:53:36 EEST; 1 day 17h ago

Jul 26 02:42:02 xxxxxx pure-ftpd[14212]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:43:01 xxxxxx pure-ftpd[14525]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:44:01 xxxxxx pure-ftpd[14597]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:45:01 xxxxxx pure-ftpd[15173]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:45:01 xxxxxx pure-ftpd[15198]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:46:02 xxxxxx pure-ftpd[16314]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:47:02 xxxxxx pure-ftpd[16335]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:48:02 xxxxxx pure-ftpd[16931]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:49:01 xxxxxx pure-ftpd[16954]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:50:01 xxxxxx pure-ftpd[17407]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:50:01 xxxxxx pure-ftpd[17488]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:51:01 xxxxxx pure-ftpd[18158]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:52:02 xxxxxx pure-ftpd[18775]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:53:01 xxxxxx pure-ftpd[18802]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:54:02 xxxxxx pure-ftpd[19386]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:55:01 xxxxxx pure-ftpd[19473]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:55:01 xxxxxx pure-ftpd[19499]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:56:02 xxxxxx pure-ftpd[20610]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:57:01 xxxxxx pure-ftpd[20630]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:58:02 xxxxxx pure-ftpd[21218]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 02:59:01 xxxxxx pure-ftpd[21244]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:00:02 xxxxxx pure-ftpd[21718]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:00:35 xxxxxx pure-ftpd[22440]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:01:01 xxxxxx pure-ftpd[22461]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:02:02 xxxxxx pure-ftpd[23040]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:03:01 xxxxxx pure-ftpd[23066]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:04:02 xxxxxx pure-ftpd[23645]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:05:01 xxxxxx pure-ftpd[23699]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:05:01 xxxxxx pure-ftpd[23724]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:06:02 xxxxxx pure-ftpd[24842]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:07:02 xxxxxx pure-ftpd[24864]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:08:01 xxxxxx pure-ftpd[24924]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:08:01 xxxxxx pure-ftpd[24924]: ([email protected]) [INFO] Logout.
Jul 26 03:09:01 xxxxxx pure-ftpd[25492]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:10:02 xxxxxx pure-ftpd[26062]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:10:02 xxxxxx pure-ftpd[26142]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:11:01 xxxxxx pure-ftpd[26737]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:12:02 xxxxxx pure-ftpd[27315]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:13:01 xxxxxx pure-ftpd[27343]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:14:02 xxxxxx pure-ftpd[27397]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:15:02 xxxxxx pure-ftpd[27977]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:15:02 xxxxxx pure-ftpd[28001]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:16:02 xxxxxx pure-ftpd[29116]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:17:01 xxxxxx pure-ftpd[29147]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:18:02 xxxxxx pure-ftpd[29732]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:19:01 xxxxxx pure-ftpd[29754]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:20:01 xxxxxx pure-ftpd[30257]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:20:01 xxxxxx pure-ftpd[30334]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:21:01 xxxxxx pure-ftpd[30985]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:22:02 xxxxxx pure-ftpd[31564]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:23:02 xxxxxx pure-ftpd[31587]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:24:02 xxxxxx pure-ftpd[32170]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:25:01 xxxxxx pure-ftpd[32224]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:25:01 xxxxxx pure-ftpd[32224]: ([email protected]) [INFO] Logout.
Jul 26 03:25:01 xxxxxx pure-ftpd[32249]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:26:02 xxxxxx pure-ftpd[921]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:27:01 xxxxxx pure-ftpd[960]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:28:02 xxxxxx pure-ftpd[1554]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:29:01 xxxxxx pure-ftpd[1574]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:30:01 xxxxxx pure-ftpd[2071]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:30:01 xxxxxx pure-ftpd[2164]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:31:01 xxxxxx pure-ftpd[2797]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:32:01 xxxxxx pure-ftpd[3062]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:33:01 xxxxxx pure-ftpd[3400]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:34:02 xxxxxx pure-ftpd[3979]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:35:01 xxxxxx pure-ftpd[4038]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:35:01 xxxxxx pure-ftpd[4064]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:36:02 xxxxxx pure-ftpd[5198]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:37:01 xxxxxx pure-ftpd[5226]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:38:02 xxxxxx pure-ftpd[5803]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:39:01 xxxxxx pure-ftpd[5848]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:40:02 xxxxxx pure-ftpd[6358]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:40:02 xxxxxx pure-ftpd[6441]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:40:02 xxxxxx pure-ftpd[6441]: ([email protected]) [INFO] Logout.
Jul 26 03:41:01 xxxxxx pure-ftpd[7089]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:42:02 xxxxxx pure-ftpd[7670]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:43:01 xxxxxx pure-ftpd[7693]: ([email protected]) [INFO] New connection from 127.0.0.1
Jul 26 03:44:03 xxxxxx pure-ftpd[8272]: ([email protected]) [INFO] New connection from 127.0.0.1
............

.. and here is what I get if I restart it:

Code:

~# systemctl -n 100 status pure-ftpd-mysql.service
● pure-ftpd-mysql.service - (null)
   Loaded: loaded (/etc/init.d/pure-ftpd-mysql)
   Active: active (running) since Wed 2016-07-27 15:08:18 EEST; 43s ago
  Process: 19961 ExecStop=/etc/init.d/pure-ftpd-mysql stop (code=exited, status=0/SUCCESS)
  Process: 19971 ExecStart=/etc/init.d/pure-ftpd-mysql start (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/pure-ftpd-mysql.service
           └─19980 pure-ftpd (SERVER)

Jul 27 15:08:18 xxxxxx pure-ftpd-mysql[19971]: Starting ftp server: Running: /usr/sbin/pure-ftpd-mysql-virtualchroot -l mysql:/etc/pure-ftpd/db/mysql.conf -l pam -p 40400:40500 -E -Y 1 -u 1000 -J ECDHE-RSA-AES128-GCM-S...28-GCM-SHA256:DH
Jul 27 15:08:18 xxxxxx systemd[1]: Started (null).
Jul 27 15:09:01 xxxxxx pure-ftpd[20015]: ([email protected]) [INFO] New connection from 127.0.0.1
Hint: Some lines were ellipsized, use -l to show in full.

Any help to fix this issue would be greatly appreciated, thanks a lot,
P.S
Sometimes it takes me a while to get back to the forums but ...

 

Till ! thanks yeah that is a good temporary solution although I hate monit, I used to have it then wiped it out.
By the way thinking it could be external attacks is not the case cause only 1 of those servers has FTP/FTPS ports open to the firewall, but all have this symptom of crashing the same way. And I did the upgrade from wheezy exactly the same way I did on the development machines and very carefully. Any ideas on what to check ?

George