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Entries tagged "howto".

Elastix on Xen howto

14th January 2011
Elastix is an open source Unified Communications Server software that brings together IP PBX, email, IM, 
faxing and collaboration functionality.
It has a Web interface and includes capabilities such as a Call Center software with predictive dialing.

The Elastix functionality is based on open source projects including Asterisk, HylaFAX, Openfire and Postfix.
Those packages offer the PBX, fax, instant messaging and email functions, respectively.

As presented above (fragment from the wikipedia page), Elastix can be quite useful if you want to run your own PBX.
As it is based on Centos I initially tried to install it the Centos way, but I encountered lots of problems so I ended up using a Linux KVM vm (I'm in love!), tweak that a bit, tar it up and transfer it to a xen dom0.
I have already lost too much time trying to get it installed so I will not comment on this anymore.
I will assume that you will use my Elastix (v2.0.3) xen image and that you also have a working LVM based (Centos) xen dom0. As most things linux there are multiple ways of doing this, this is my way. Let's begin:

- 1 - Let's create 2 LVM volumes for the elastix vps:
lvcreate -L10G -nelastix-root vg0; lvcreate -L1G -nelastix-swap vg0

- 2 - Download and extract the image:
wget http://dl.nux.ro/xen/domU/elastix_32/elastix.tar.bz2; tar xjf elastix.tar.bz2

- 3 - Format the volumes and copy the contents of the tar archive on to the root one:
mkfs.ext3 /dev/vg0/elastix-root
mkswap /dev/vg0/elastix-swap
mkdir /mnt/elastix
mount /dev/vg0/elastix-root /mnt/elastix
cp -a elastix/* /mnt/elastix/
umount /mnt/elastix/

- 4 - Create a xen cfg file for this domU: vi /etc/xen/auto/elastix.cfg
bootloader = "/usr/bin/pygrub"
name = "elastix"
memory = "512"
disk = [ 'phy:/dev/vg0/elastix-root,sda1,w', 'phy:/dev/vg0/elastix-swap,sda2,w' ]
vif = ['vifname=elastix,bridge=xenbr0']
on_poweroff = 'destroy'
on_reboot = 'restart'
on_crash = 'restart'

- 5 - After saving that file start the virtual machine:
xm create -c /etc/xen/auto/elastix.cfg

- 6 - Log in the vm, change the password using the "passwd" command and set up the networking (run "setup" if you don't know which system config files to edit). When asked for a password please input "parola2011" (without the quotes). Please change the root password ASAP!!
- 7 - Visit http://IP_of_VM/ and log in as admin with password parola2011 (change the admin password ASAP!).

Enjoy!

PS: You may want to change some system settings like the keyboard layout (set to uk) and timezone (set to Europe/Bucharest).
Tags: centos, elastix, howto, linux, notes, virt, xen. | No comments

ntop: service not configured, run ntop manually

30th August 2012
So today after creating an ntop rpm package for EL6 I wanted to test this program.

After "yum install" I naturally tried "service ntop start" but only to get this:
Starting ntop: service not configured, run ntop manually


Of course, the service was not "configured" - by this ntop means that there is no admin password set for the web interface. To set a password you only need to do this: 
ntop --set-admin-password=reallyBadpassword


After this ntop will start just fine. Enjoy!
Tags: centos, el6, fail, howto, ntop, rpm. | No comments

Setting up Confluence behind mod_proxy

19th November 2013
I've recently tried to set up Confluence behind Apache HTTPD (mod_proxy) and it did not go as smoothly as the Atlassian docs suggest.

Here's what needs doing:
1 - Go here and download the 64 bit Linux installer (I'm on Centos 6 64bit)
2 - Make it executable and execute it, use the default values when asked or what you think is appropriate
3 - If you want to use a MySQL DB download this and extract from it mysql-connector-java-5.1.27-bin.jar, putting it in /opt/atlassian/confluence/confluence/WEB-INF/lib/ on the server
4 - Restart Confluence: service confluence restart
5 - Go to http://confluence.example.com:8090 and finish the setup, then go in Confluence Admin -> General Configuration and edit the Site Configuration Edit, updating Server Base Url to match the subdomain you want to use in the end, e.g. http://confluence.example.com or https://confluence.example.com if you want SSL. Save the settings.
6 - Enable proxing in Apache httpd; edit /etc/httpd/conf/httpd.conf and modify your virtualhost such that it looks like this:
<VirtualHost 12.34.56.78:443>
DocumentRoot "/var/www/confluence"
ServerName confluence.example.com
SSLEngine on
SSLCertificateFile /path/to/server.crt
SSLCertificateKeyFile /path/to/server.key
ProxyRequests Off
ProxyPreserveHost On
ProxyPass / http://127.0.0.1:8090/
ProxyPassReverse / http://127.0.0.1:8090/
</VirtualHost>
7 - Edit /opt/atlassian/confluence/conf/server.xml and add this in the Connector's line: proxyName="confluence.example.com" proxyPort="443" scheme="https" so that it resembles this
8 - Restart both httpd and confluence services
9 - Go to https://confluence.example.com and enjoy!
Tags: apache, atlassian, centos, confluence, howto, mod_proxy, proxy. | No comments