Adrien le Maire

Piwik's extension for Pluxml

Adrien le Maire — Fri, 20 May 2011 18:13:00 +0200

This is the first plugin I've created it from the one for google analytics. It has a similar purpose, except that Piwik is hosted on your server. I invite you to go take a look at Piwik website here's the file :-)

Use NSCA easily with nsca-wrapper modified

Adrien le Maire — Fri, 25 Mar 2011 12:01:00 +0100

Nagios's aim is to monitor a lot of different services on differents operating systems.

To allow to check a huge number of services, the monitoring server need a big computing capacity, or change your way to perform the checks, and ensure that your monitored hosts send the state of each service to the Nagios server. That's why I choose NSCA. Just install the server package on your Nagios host, then the nagios-plugins on the remote; and I perform the checks automaticaly with nsca-wrapper.

I was using nsca-wrapper but, I though that's use to much my database, so, I decide to modify the script NSCA Wrapper available on Nagios Exchange.

I wanna get any modification of the state of my monitored services. So it doesn't have to send update if no change.
I decide to add the "memory" option to that script. It needs as argument, a folder in witch the state of all commands will be safe.
To generate the name of each file, I choose to use a md5 hash of the command.

Now, I'm sending my nsca checks using cron with a file grouping all my commands like :
[code lang="bash"]NSCA_WRAPPER="/etc/nagios-plugins/nsca_wrapper -N watch -b /usr/sbin/send_nsca -c /etc/send_nsca.cfg -d /var/local/nsca -q -H dom0" $NSCA_WRAPPER -S SSH -C '/usr/lib/nagios/plugins/check_ssh '127.0.0.1'' [/code]

Here is my modify version : nsca_wrapper.tar.gz

Enjoy :-)

Samba4 as Primary Domain Controller

Adrien le Maire — Fri, 25 Mar 2011 11:54:00 +0100

It is a service available under GNU/Linux. Originally build for sharing files with windows using a smb-compatible protocol.

The version 4 implements a lot of new fetaures :

support of the 'Active Directory' logon and administration protocols
new 'full coverage' testsuites
full NTFS semantics for sharing backends
Internal LDAP server, with AD semantics
Internal Kerberos server, including PAC support
Bind9 integration for AD DNS support
fully asynchronous internals
flexible process models
better scalablilty from micro to very large installations
new RPC infrastructure (PIDL)
flexible database architecture (LDB)
Python support - used excessively for client and management tools
generic security subsystem (GENSEC)
over 50% auto-generated code!

So if you want to have an Active Directory like server but completly free and under Ubuntu ; there's a way to install it very easily way to install the daily-build version. If you wanna do less update of samba; you would use the version provided by ubuntu.

For those who want to use the Ubuntu version, pass directly to the point 3.

Add two repositories

$ apt-add-repository ppa:samba-team/ppa
$ apt-add-repository ppa:openchange/daily

sudo apt-get install python-software-properties

Set the packages from ppa repositories prioritirly

Package: *
Pin: origin ppa.launchpad.net
Pin-Priority: 600

Install the right pakages

aptitude update && aptitude install samba4 openchangeserver samba4-ldb libwbclient0

To configure and install your domain

bash /usr/share/samba/setup/provision --realm=pdc.mydomain --domain=MYDOMAIN --adminpass=password --server-role='domain controller'

If you get an error after an upgrade; search on the web or wait for a new version ; it's still an alpha version. Sources :

Public IP from a command line

Adrien le Maire — Wed, 16 Mar 2011 14:35:00 +0100

There's a little tirck to get your ip by another way than "grep / sed" from a web page. ifconfig.me allows you to get your ip with one simple command :

curl ifconfig.me

curl ifconfig.me/ip

for the reverse dns of your ip :

curl ifconfig.me/host

more informations on the official website : http://ifconfig.me