Linux

javax.servlet.ServletException
org.apache.catalina.security.SecurityUtil.execute
(SecurityUtil.java:294)

Solution:

Create 20servlets.policy:

nano -w /etc/tomcat5.5/policy.d/20servlets.policy

And add:

grant codeBase "file:${catalina.base}/webapps/-" {
permission java.security.AllPermission;
};

And restart Tomcat

/etc/init.d/tomcat5.5 restart

$ ssh vm3.rootspirit.com -l root
root@vm3.rootspirit.com's password:
PTY allocation request failed on channel 0
stdin: is not a tty

mkdir /tmp/disk
mount /path/to/disk.img /tmp/disk
chroot /tmp/disk /bin/bash

nano -w /etc/fstab

none            /dev/pts      devpts    defaults        0   0

apt-get install udev

exit
umount /tmp/disk
xm create /path/to/xen/vm.cfg

I had to start a new Xen domU this afternoon,

xm create vm#.domain

But this resulted in following error:

Error: Device 5632 (vbd) could not be connected. Failed to find an unused loop device

Solution:

Create /etc/modprobe.d/local-loop.conf with this content:

options loop max_loop=64

Turn off all DomUs, yes, bummer. You’ll need to reload the loop module which won’t work if Xen is still using them. xm list should only display Domain-0.

• Been playing around with nginx vs Apache for iRail. The bottle neck still is the NMBS site (and I'm truly sorry for DoSing you, dearest NMBS. I had to benchmark), but nginx seems to win just slightly over Apache. Maybe it's worth moving irail.be to my nginx webserver. <3 nginx.
• The iRail (national) mobile website is getting its final touches and should go live tomorrow night.
• The iRail API seems stable. Special thanks to Pieter.
• iRail is currently developing a native Qt (Symbian, Maemo and MeeGo) application.
• There will most likely be a Bada (Samsung) native application as well.
• Same for the iPhone, native app should be here soonish.
• If you'd like to help, one way or another, two addresses, Project iRail and mailing list. :)
• iRail team will attend Apps Marathon on Monday.
• iRail @ OpenBelgium

iRail source is on Github.

To access the iRail source code;

Be aware you need to be added as contributor before being able to commit changes.

1. get Git
2. [browse to some folder] mkdir git
3. cd git
4. git clone git@github.com:Tuinslak/iRail.git
5. cd iRail
6. git fetch

To edit & commit changes:

1. git add [file]
2. git commit -m 'edited [file], added this and that'
3. git push

To update repo

1. git fetch
2. git merge origin/master

To check log

Has a year uptime as well! Yay ;)

It's the one at the bottom. Running Ubuntu as OS (Dom0) and several Xen virtual machines (such as the nginx reverse proxy cache of this blog). Four is a dual core Xeon with 8Gb RAM.

Been slacking a bit lately, but here they are:

• /etc/nginx/nginx.conf // general nginx config
• /etc/nginx/sites-available/blog // my current (as of posting this) rproxy settings for this blog
• /etc/nginx/conf.d/proxy.conf // reverse proxy related config

Only because stats are pretty awesome. The effects of my media attention a few days ago. I’ll give some more info than what can be seen here.

And pretty happy I set up my nginx caching up a few weeks ago.

MRTG traffic stats on vm1, my nginx caching server, of the first 2 days (only major traffic source is this blog):

Top referrers (though not 100% accurate):

Probably won’t change a lot to my performance, but I’ve mounted the nginx reverse proxy cache in a tmpfs mount.

none on /var/cache/nginx/blog type tmpfs (rw,size=512m)

none  512M   47M  466M   4% /var/cache/nginx/blog

Let’s see what performance boosts this will give. :P