Experimental Physics and
Industrial Control System

From: Wesley Moore [mailto:[email protected]]
Sent: Tuesday, June 02, 2015 3:45 PM
To: Mark Rivers
Cc: EPICS Tech-Talk
Subject: Re: Rotating or deleting procServ log files

Mark,

I had the same issue with some very verbose iocs.  What I did to solve this was by using logrotate to manage the log files.  Here's the basics of my config (note you can rotate on size too):

# /etc/logrotate.d/softiocs

<path to logs>/*log {

    notifempty

    copytruncate

    daily

    rotate 7

    dateext

    compress

}

Log files end up like this:

-rw-r--r-- 1 epics clas-3 311M Jun  2 16:41 iocsvtDaqDpm0.log
-rw-r--r-- 1 epics clas-3 4.2M May 27 04:12 iocsvtDaqDpm0.log-20150527.gz
-rw-r--r-- 1 epics clas-3 2.1M May 28 04:09 iocsvtDaqDpm0.log-20150528.gz
-rw-r--r-- 1 epics clas-3 2.3M May 29 04:06 iocsvtDaqDpm0.log-20150529.gz
-rw-r--r-- 1 epics clas-3 2.3M May 30 04:07 iocsvtDaqDpm0.log-20150530.gz
-rw-r--r-- 1 epics clas-3 2.4M May 31 04:11 iocsvtDaqDpm0.log-20150531.gz
-rw-r--r-- 1 epics clas-3 2.4M Jun  1 04:07 iocsvtDaqDpm0.log-20150601.gz
-rw-r--r-- 1 epics clas-3 2.5M Jun  2 04:08 iocsvtDaqDpm0.log-20150602.gz

Wesley

From: "Mark Rivers" <[email protected]>
To: "Ralph Lange" <[email protected]>
Cc: "EPICS Tech-Talk" <[email protected]>
Sent: Tuesday, June 2, 2015 4:22:07 PM
Subject: Rotating or deleting procServ log files

Ralph,

 

procServ log files sometimes get very large, so we would like to rotate them, and or delete them and start a new one without restarting the procServ process.

 

Is this possible?  I found that if I rename the log file procServ just kept writing to the renamed file.  If I delete the log file procServ does not create a new one, it just silently continues without logging anything.

 

Is there a correct way to replace the current log file without restarting the procServ process?

 

This is procServ 2.6.0.

 

Thanks,

Mark