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I have 3 log analyzer tools pre-installed on my server. In your opinion, which of the 3 analyzer tools do you find best?

My Objective: basically to analyze the error log file

Software Installed:

* Analog
* Awstats
* Webalizer

I did read through this question --> Log Analyzer for Apache

Thank you.

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Please define "the best", and elaborate "to analyze the error log". What do you want to know? A fancy image? A plain text list? The linked question has an accepted answer, which is useful for error logs. –  Lekensteyn Feb 17 '11 at 14:01
    
Basically, I need it to analyze the error log file and give me the ability to that quickly and easily review a formatted report. Optional extras = if it has low overhead and limited drain on my server - great. If it can send me a report via email vs. me having to log into the server -- awesome. If it can organize and group errors by host (domain) -- that too is awesome. @Lekensteyn, do you have any experience with them or a personal preference? Thanks. –  H. Ferrence Feb 17 '11 at 15:06
    
as my Apache logs are not that big now, I'm reading them manually, using less or zless (for compressed logs). This is certainly not the best method, but it suits me for now. For the server, I'm logwatch, which also has an ability for summarizing Apache logs. –  Lekensteyn Feb 17 '11 at 15:22
    
@Lekensteyn -- thanks for the feedback. I have the 3 packages listed above pre-installed, so I am just looking for some experienced advice on which one to use...have a great day. –  H. Ferrence Feb 17 '11 at 16:08
    
I have just setup a Graylog2 server using this tutorial. Yeah, I made the tutorial... I have just asked a question about how to add multiple error log files - serverfault.com/questions/310695/… –  Dean Perry Sep 12 '11 at 22:53

2 Answers 2

The three log analysers you list (Analog, Awstats & Webalizer) don't do much with Apache Error logs.

I've used ScanErrLog to summarise the Apache error_log file for several years now. I run it from Cron once or twice a day, and it remembers where it finished, to be able to pick up and add to the output. Usually, I have it produce a HTML page with counts and URLs of problems. I can produce other formats though.

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Thanks @Alister Bulman. Do you have a sample screen shot you could show or send me? I tried the demo on the home page of ScanErrLog but it did not work. –  H. Ferrence Feb 22 '11 at 10:27
    
I've not got a live server running with it right now, but it's easy to install, just one dependency from the same site if you can't install it directly by the OS. From there, just follow the instructions and point it at an error_log file. –  Alister Bulman Feb 22 '11 at 19:46
    
I use ScanErrLog in my /etc/logotate.d/lognames as a "prerotate" script. –  blau Jul 2 '13 at 7:17

I am using this tool xavinmotion error analyser

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Welcome to Server Fault! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. –  slm Aug 16 '13 at 1:20

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