There are a few posts around for doing this easily, but this has just worked nicely for me. This was done between two instances on Amazon EC2 cloud. On the existing slave (in mysql) SLAVE STOP; SLAVE SHOW STATUS\G; # …
Category Archives: Linux - Page 2
Turn PHP Xdebug profiling on and off by BASH script
Posted by admin
on March 3, 2012
No comments
It was bugging me (debugging me?) that Xdebug profiling dragged my development server down so much. So here’s a simple script to place in /usr/local/bin to turn it off and on more easily. Remember to chmod +x it first. This …
Blocking advert sites using /etc/hosts
Posted by admin
on January 11, 2012
No comments
Using the hostsfile.mine.nu approach to blocking adverts is nothing new, but sometimes in the course of testing something, I do actually need to see if adverts and ad pop-ups are working correctly. So I do this… Download the hosts file …
Persistent SSH connections with tmux
Posted by admin
on January 10, 2012
No comments
I administer a group of Amazon cloud instances and am constantly having to SSH in to update and monitor them. And for some reason (maybe because I live in the back of beyond) I often get really poor connections to …
Size of MySQL fields – incorrect assumptions
Posted by admin
on January 9, 2012
No comments
I came to the world of MySQL with very little experience. I inherited a DB with a client I took on, and found myself learning what I needed as I went on. And I found something out today that surprised …
Fail2Ban with sendEmail Python MTA and SMTP
Posted by admin
on December 22, 2011
12 comments
The servers I administer are on Amazon cloud, and there are often problems with outgoing emails and sendmail, so for a quick fix to add outgoing email support to scripts, I’m okay with using sendEmail, a small Python SMTP email …
Fail2Ban Error – Iptables returned 200
Posted by admin
on December 21, 2011
3 comments
This relates to seeing things like this in /var/log/fail2ban.log when restarting the fail2ban service: 2011-12-21 23:06:03,471 fail2ban.actions.action: ERROR iptables -D INPUT -p tcp -m multiport –dports http,https -j fail2ban-apache-wordpress-login iptables -F fail2ban-apache-wordpress-login iptables -X fail2ban-apache-wordpress-login returned 200 The very simple …
Protecting Apache webservers from WordPress admin login dictionary attacks with fail2ban
Posted by admin
on December 21, 2011
8 comments
A better solution has been posted here but I’ll leave this post up too. A very popular webserver I administer has been getting more attention from the script kiddies, and the Apache access log has been filling up with repeated …
Screenshots with Awesome WM and xsnap
Posted by admin
on December 20, 2011
4 comments
One thing I really, really liked about Compiz was the ability to hold down CTRL, drag the mouse over part of the screen, and take a screenshot. Sadly I discovered this about a week before it broke in 11.04 – …
Awesome WM config tweaks
Posted by admin
on December 20, 2011
1 comment
I use Awesome WM which has made a splendid alternative to Gnome/Unity since soon after this was unleashed in Ubuntu 11.04. Not only did I find Unity to be dog-slow, I was finding windows were getting in the way more …
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