Change is required. Atlassian engineer's blog

  Hello community, Gonchik Tsymzhitov is in touch. Today, I want to share with you a short story about how trustworthy tools unexpectedly break on new operating systems, and how easy they are to be repaired. So, we all know that  centos.rip , after a very period of time, so I am migrating everywhere to Oracle Linux 8. My favorite tool for setting up PostgreSQL servers is postgresqltuner.pl, which I have already covered  in this article . Setting up as usual is very simple: # dnf install -y perl-DBD-Pg # wget -O postgresqltuner.pl https://postgresqltuner.pl # chmod +x postgresqltuner.pl But this time, when I ran the script, I encountered such a problem after command, # ./postgresqltuner.pl --ssd Can't locate Memoize.pm in @INC (you may need to install the Memoize module) (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at ./postgresqltuner.pl line 262. BEGIN failed--co...

     Today, I got a question about how to check the fragmentation of ext4 filesystems, as most common for the Data Center edition or Server edition setups.       That article is the next step of a previous story about the  improvement of latency for volumes.      Of course, some users can ask why we need to do defragmentation on ext4 as it’s not fragmented. As an answer, I would recommend checking out the presentation from LinuxCon 2010   with the name Outline of Ext4 File System & Ext4 Online Defragmentation Foresight   and watch the small video with fragmentation So let’s start to use one small command line utility e4defrag.  Online man page you can find here: http://manpages.ubuntu.com/manpages/focal/man8/e4defrag.8.html Get report of fragmentation:      $ sudo e4defrag -c /location After checking the results you can run the defragmentation: $ sudo e4defrag /location If you want extra info: $...