<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)">  <title>Re: [Nagios-users] How do nagios logs rotate</title> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> I think I was just too vague. I know how and where the logs are defined to rotate, what I am looking for is the command they use so I can append a function to HUP my process reading the tail of the file. I have configured Nagios on Redhat 7.3, Fedora Core 2 & 3, RHEL WS 3 and Debian Woody and Sarge with Netsaint 0.0.7, Nagios 1.2, 1.3(Debian), 2.0a1, 2.0b2, and 2.0b3. I am currently working on 2.0b3 on RHEL WS 3. Although I like 1.3 on Debian Sarge, I think the newer version is better for my purposes. I have not seen any logging information regarding how the logs are rotated, but I believe that they are using logrotate. If this is the case, I would be happy to use the functionality built into the system to HUP my process much like I see in the /etc/logrotate.conf file. I know there are developers on the list, so I am hoping that there is a solution that they know about.<o:p></o:p> <o:p> </o:p> Once again, I understand that the process of monitoring the log this way is not the most efficient, but it works for now. The only problem is that I inherited a system with a Nagios log of over 3GB and I would like to prevent this in the future. The system takes sometimes hours to display the log information. My new system resolves this issue and the logs seem to rotate fine, but the process I use to monitor the log does not feed any data after the log is rotated.<o:p></o:p> <o:p> </o:p> I guess another option would be to set the log rotation to none and use the logrotate function, but I think this will have adverse affects to the statistics. Please help.<o:p></o:p> <o:p> </o:p> <div> Scott Yem<o:p></o:p> </div> <div> <div class=MsoNormal align=center style='margin-left:.5in;text-align:center'> <hr size=2 width="100%" align=center tabindex=-1> </div> From: nagios-users-admin@lists.sourceforge.net [mailto:nagios-users-admin@lists.sourceforge.net] On Behalf Of Calvin Crutchfield Sent: Wednesday, April 13, 2005 4:02 PM To: nagios-users@lists.sourceforge.net Subject: Re: [Nagios-users] How do nagios logs rotate<o:p></o:p> </div> <o:p> </o:p> For the nagios log it is in the main config file: # LOG ROTATION METHOD # This is the log rotation method that Nagios should use to rotate # the main log file. Values are as follows.. # n = None - don't rotate the log # h = Hourly rotation (top of the hour) # d = Daily rotation (midnight every day) # w = Weekly rotation (midnight on Saturday evening) # m = Monthly rotation (midnight last day of month) log_rotation_method=d calvin On 4/13/05 3:55 PM, "scott_yem@agilent.com" <scott_yem@agilent.com> wrote:<o:p></o:p> I have a process looking at the log files and noticed that when the logs rotate, my process looking at the log file breaks. I am using a tail –f command with a perl script to interpret data coming back via a passive check. I am then plugging the information into a rrd and making graphs. I know this is probably easier with nagiosgraph or something, but this is a migration from a server running Netsaint 007. I wanted to get things running the way they were and then work to get the other files made up the way we want. I will try nagiosgraph, but in my last attempts, I was not able to get it working properly. The functionality seems to be better than what I am currently using, but the code for the current solution is more than 3 years old. I was looking in /etc/logrotate.conf and did not find any log rotation in there. If the script was in here I know I could HUP the process for my script, but I cannot find the process that rotates the logs. Any help is appreciated. Scott Yem Research Computing Services Agilent Laboratories<o:p></o:p> <o:p> </o:p> </div> </body> </html>