how to understand and troubleshoot log messages

[enriquet]

I am working on a migration from a cacti installation version 0.8.8 that was on /usr/share/cacti/site of one debian (old one), to another new server, new debian, new cacti 1.2.17, and on /usr/share/cacti. Most of the graphs look good and i am trying to get a clear log, without errors and warnings. I got to the point when i am not sure on how to interpret and troubleshoot the following messages, and i am not very skilled in php as to analise why it is happening, so i would apreciate any help of link to documentation that helps to interpret and solve the issues reported by log.


2021-06-07 16:35:25 - CMDPHP PHP ERROR NOTICE Backtrace: (/cmd.php[325]:ping_and_reindex_check(), /cmd.php[735]:CactiErrorHandler())
2021-06-07 16:35:25 - ERROR PHP NOTICE: Undefined variable: cactiphp in file: /usr/share/cacti/cmd.php on line: 735
2021-06-07 16:35:25 - CMDPHP PHP ERROR NOTICE Backtrace: (/cmd.php[325]:ping_and_reindex_check(), /cmd.php[735]:CactiErrorHandler())
2021-06-07 16:35:25 - ERROR PHP NOTICE: Undefined variable: pipes in file: /usr/share/cacti/cmd.php on line: 735
2021-06-07 16:35:25 - CMDPHP PHP ERROR NOTICE Backtrace: (/cmd.php[325]:ping_and_reindex_check(), /cmd.php[735]:CactiErrorHandler())
2021-06-07 16:35:25 - ERROR PHP NOTICE: Undefined variable: using_proc_function in file: /usr/share/cacti/cmd.php on line: 735
2021-06-07 16:35:03 - CMDPHP PHP ERROR NOTICE Backtrace: (/cmd.php[325]:ping_and_reindex_check(), /cmd.php[735]:CactiErrorHandler())
2021-06-07 16:35:03 - ERROR PHP NOTICE: Undefined variable: cactiphp in file: /usr/share/cacti/cmd.php on line: 735
2021-06-07 16:35:03 - CMDPHP PHP ERROR NOTICE Backtrace: (/cmd.php[325]:ping_and_reindex_check(), /cmd.php[735]:CactiErrorHandler())
2021-06-07 16:35:03 - ERROR PHP NOTICE: Undefined variable: pipes in file: /usr/share/cacti/cmd.php on line: 735
2021-06-07 16:35:03 - CMDPHP PHP ERROR NOTICE Backtrace: (/cmd.php[325]:ping_and_reindex_check(), /cmd.php[735]:CactiErrorHandler())
2021-06-07 16:35:03 - ERROR PHP NOTICE: Undefined variable: using_proc_function in file: /usr/share/cacti/cmd.php on line: 735

[netniV]

Basically, the code is trying to pass a variable before it has been defined. If you don't have any script server scripts in your installation, that is the most likely cause as I can't see the code populating that variable without at least one. It should have primed it as 'false' to ensure that it existed even if it wasn't set yet. If you can, log this on github so it can be fixed.

[enriquet]

Thanks for you answer. I do have some xml in script_servers directory. All of them were used in previous version. I am kind of lost with log messages. Since original post i changed to spine, but cacti is not working well neither with spine, nor with cmd.php, and graphs have big holes in them, in which nothing is graphed

[netniV]

Sorry, I must have been half asleep the other day. the cactiphp variable is actually a built up variable that is made up of the configuration option path_php_binary (in the database) and the base path of your server (base_path in config.php). Make sure both are set.

[netniV]

If you still get the error, log it as a bug on github (https://github.com/cacti/cacti/issues/new/choose) and we can do some investigation on it

[enriquet]

Thanks a lot for your help. I did opened a bug, but i am still facing with worse issues. Now nothing is working (graphs in nan) in my updated installation and the following message is being logged

CMDPHP ERROR: A DB Exec Failed!, Error: MySQL server has gone away

I ve googled it for a while, but without being able to solve it. No idea whats happening

[netniV]

This has now been corrected on the latest sources of 1.2.x branch.