cloudprintd dies randomly

[bits01]

This is on Linux Mint 17.2, running cloudprint-service_0.13-1+deb8u1+ppa1_all.deb

The cloudprintd process seems to just randomly die. I don't see anything interesting in /var/log/syslog, the last thing I see before the process is gone:

Nov  5 11:44:49 server cloudprint.py: Polling for jobs on HP

Any suggestions on how to troubleshoot or enable more debugging?

[bits01]

I see some errors such as the one below but there are more log entries after the promised 60 sec. so the process is not dead after these errors:

ERROR: Could not Connect to Cloud Service. Will Try again in 60 Seconds#012Traceback (most recent call last):#012  File "/usr/share/cloudprint/cloudprint/cloudprint.py", line 418, in process_jobs#012    xmpp_conn.await_notification(cpp.sleeptime)#012  File "/usr/share/cloudprint/cloudprint/xmpp.py", line 214, in await_notification#012    self._read_socket()#012  File "/usr/share/cloudprint/cloudprint/xmpp.py", line 84, in _read_socket#012    raise Exception("xmpp socket closed")#012Exception: xmpp socket closed

[davesteele]

It didn't die. It is printing a trace to aid debugging, but the services is continuing to run.

It is unable to connect to the print notification service. If this problem persists, check networking and authentication.

[bits01]

It did die. There's no trace of the process when I run ps. But it didn't die because of the ERROR I posted above, there were more lines in the log after, it tried to connect after the promised 60 sec. and it was able to, it ran for a bit after and then it disappeared, nothing in the syslog anymore and when I needed to print I couldn't, looked for the process and was nowhere to be found, gone.

[davesteele]

There should be a log entry, if it is crashing. I don't have any short advice on how to track what happened.

For others who may be reading this investigating the same problem, the later versions of cloudprint-service, running under systemd, will automatically restart the service on a crash. It will run on Debian Testing/Sid, and apparently Ubuntu 15.10 or later.

[mfraser]

I'm seeing this almost every hour: Sep 22 08:52:40 Server cloudprintd[54877]: Sending XMPP keepalive Sep 22 08:52:40 Server cloudprintd[54877]: ERROR: Could not Connect to Cloud Service. Will Try again in 60 Seconds Sep 22 08:52:40 Server cloudprintd[54877]: Traceback (most recent call last): Sep 22 08:52:40 Server cloudprintd[54877]: File "/usr/share/cloudprint/cloudprint/cloudprint.py", line 457, in process_jobs_once Sep 22 08:52:40 Server cloudprintd[54877]: xmpp_conn.await_notification(cpp.sleeptime) Sep 22 08:52:40 Server cloudprintd[54877]: File "/usr/share/cloudprint/cloudprint/xmpp.py", line 253, in await_notification Sep 22 08:52:40 Server cloudprintd[54877]: self._read_socket() Sep 22 08:52:40 Server cloudprintd[54877]: File "/usr/share/cloudprint/cloudprint/xmpp.py", line 85, in _read_socket Sep 22 08:52:40 Server cloudprintd[54877]: data = self._wrappedsock.recv(1024) Sep 22 08:52:40 Server cloudprintd[54877]: File "/usr/lib/python2.7/ssl.py", line 756, in recv Sep 22 08:52:40 Server cloudprintd[54877]: return self.read(buflen) Sep 22 08:52:40 Server cloudprintd[54877]: File "/usr/lib/python2.7/ssl.py", line 643, in read Sep 22 08:52:40 Server cloudprintd[54877]: v = self._sslobj.read(len) Sep 22 08:52:40 Server cloudprintd[54877]: error: [Errno 104] Connection reset by peer Sep 22 08:53:41 Server cloudprintd[54877]: Polling for jobs on DYMO_LabelManager Sep 22 08:53:42 Server cloudprintd[54877]: Polling for jobs on HP_HP_Photosmart_Premium_C309g-m Sep 22 08:53:42 Server cloudprintd[54877]: Polling for jobs on Samsung_M2020_Series Sep 22 08:53:43 Server cloudprintd[54877]: Establishing connection to xmpp server talk.google.com:5223 Sep 22 08:53:43 Server cloudprintd[54877]: xmpp connection established

[davesteele]

The keepalive is sent whenever there is no activity on the persistent XMPP connection for 5 minutes. In practice, that never happens, because Google sends a keepalive more often than that (I don't see the log entry here). Something appears to be interfering with your connection.

If you would like to try something, edit /usr/share/cloudprint/cloudprint/cloudprint.py and change KEEPALIVE to something smaller, say 60.0.

Let me know if this helps.

[bits01]

FWIW, I'm still seeing the same problem on Linux Mint 17: the process cloudprintd just disappears randomly, there's nothing in the logs that I can find. Not sure how or why it exits/crashes. Using 0.13-1+deb8u1+ppa2

[davesteele]

Could it have been this?

https://github.com/armooo/cloudprint/pull/130

[bits01]

Willing to try it if you can make a new package for non-systemd distros.