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Monthly Archives / August 2016

  • Aug 22 / 2016
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Find and identify where inodes are used

Your monitoring system is claiming that your server is running out of free inodes but your disks are not full at all? Maybe you just need to check your filesystem usage and how many files are being used at the same time… Here are some tips to check and identify the inodes being used.

First of all, you can check percentage of inodes used with this simple command:

You will see inode usage for your partitions and mouting points:

Here, we can easily see that /var is using 83% of inodes, which is quite high.

Let’s now identify how those inodes are used with a compound command using find:

You will get a sorted result like this (I truncated to display only the last lines which are the most important):

We can clearly see that inodes are mostly used by /var/spool/postfix/maildrop. You just have to go in that folder and check if files are useful and/or if you can do some cleaning there.
Then, once files are removed and directory clean, your inodes will be freed and everything will be back to normal!

  • Aug 11 / 2016
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Calculate Database/Table size in MySQL

MySQL is an open-source relational database management system (RDBMS) available under the terms of the GNU General Public License, as well as under a variety of proprietary agreements.

Thanks to some few functions, it’s possible to retrieve important information about database size and/or table size for a MySQL instance.

Size for all databases

Size of tables for a specific database

For a complete documentation, please refer to the official documentation on their website https://www.mysql.com

  • Aug 02 / 2016
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Skype group chat not working on linux

With Linux version for Skype, it can happen that group conversation are not working as expected (conversations do not start, or updates are not working, or group members do not appear, …).

You can check MSNP version you are using by typing this command in any conversation chat:

If you are getting this message (“LoggedOut”), this means that you have the MSNP issue:

You can so enter in the chat:

Then, restart Skype.

Once restarted, you can check again the MSNP version:

You should now get “LoggedIn”:

Et voila, Skype will now work correctly 🙂

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