With Paul McCullagh’s PBXT storage engine getting integrated into MariaDB 5.1, it’s never been easier to it out. So we have, on a slave off one of our own production systems which gets lots of inserts from our Zabbix monitoring system. That’s possibly an ideal usage profile, since PBXT is a log based engine (simplistically [...]
This is a Request for Input. Dual MySQL masters with MMM in a single datacentre are in common use, and other setups like DRBD and of course VM/SAN based failover solutions are conceptually straightforward also. Thus, achieving various forms of resilience within a single data-centre is doable and not costly. Doing the same across multiple [...]
Walter and I are giving a tutorial on Monday morning, MySQL (and MariaDB) Dual Master Setups with MMM, I believe there are still some seats available – tutorials are a bit extra when you register for the conference, so you do need to sign up if you want to be there! It’s a hands-on tutorial/workshop, we’ll be [...]
This Thursday (October 22nd, 13:00 UTC), Walter Heck (of Open Query) will present Dual Master Setups With MMM. MMM (Multi-Master Replication Manager for MySQL) is a set of flexible scripts to perform monitoring/failover and management of MySQL master-master replication configurations (with only one node writable at any time). Session slides (PDF). The toolset also has [...]
rsnapshot is a filesystem snapshot utility for making backups of local and remote systems, based on rsync. Rather than just doing a complete copy every time, it uses hardlinks to create incrementals (which are from a local perspective a full backup also). You can specify how long to keep old backups, and all the other [...]
We often need many tabs open in a browser, and horizontal tabs become unmanageable. Tab Kit allows you to have them vertically on the left, with various additional configuration choices. I opted for the tree structure, so when I open a tab from another one it’ll show up as a child to the original. I [...]
Only the other day I was talking with someone who does a lot of work on the shell command line, but hadn’t used the GNU screen tool, so I’d better scribble a post about it as I regard it as an absolute must-have for any remote work, for multiple reasons. First of all, what screen does. [...]
I was actually exploring inotify-tools for something else, but they can also be handy for seeing what goes on below a mysqld process. inotify hooks into the filesystem handlers, and sees which files are accessed. You can then set triggers, or just display a tally over a certain period. It has been a standard Linux [...]
While doing some work for the MySQL MMM project, I got distracted and browsed around for a bit. I started searching for MySQL on google code, and then expanded that search into launchpad, sourceforge and of course forge.mysql.com. I found that there are literally thousands of FOSS MySQL projects on these sites. No surprise really, [...]
