yves – Page 10 – Yves' SCM information site

2011/02/102011/04/29

Groupware

People have heard about sharepoint, some people have heard about exchange…. Not difficult to miss if you consider the marketing engine that is behind it. Microsoft is desperately trying to change its business model now that Linux has become an low-cost alternative for people that are not wanting to pay for something that should be free.

The idea behind sharepoint is to tie people into an eco-system that will generate a future-proof eco-system. It took linux years to become ready for the mass market. Now that it is, Windows is only there for specific needs or for the ignorant. The only way windows will survive in the future, is to make it free for the masses.

Now this takes away a revenue stream for Microsoft. So they positioned a new one. Sharepoint is there to surplant Exchange, and to make people dependent.

Here are a few alternatives that already exist on the market (Article on groupwares).

2011/02/102011/05/20

WordPress compared to other blogs

Some article describing the different blogging engines. (as long as you consider WordPress a blogging engine).

http://www.majordojo.com/2011/02/how-did-wordpress-win.php

2011/02/04

GIT information

If you are working with GIT, following sites could be of interest.

The git reference: http://gitref.org/.
The git user-manual: http://www.kernel.org/pub/software/scm/git/docs/user-manual.html.

2011/01/122011/05/31

/proc folder

Some explanation of the proc folder on Linux

http://blog.ksplice.com/2011/01/solving-problems-with-proc/

2011/01/112011/05/20

Committing to repository

I found some guidelines about committing:

http://www.mutuallyhuman.com/blog/2011/01/10/clean-commits. Read on…

2011/01/052011/05/20

LDAP install guide CentOS

At first sight a good explanation on setting up an ldap on a CentOS machine.

First we start looking at a low profile CentOS machine to activate on my ESXi. Follow these steps:

1) Getting CentOS:
http://www.server-world.info/en/note?os=CentOS_5&p=make_media

2) Preparing the ESXi instance:
http://www.server-world.info/en/note?os=CentOS_5&p=vmware_esxi&f=3

3) Installing CentOS:
http://www.server-world.info/en/note?os=CentOS_5&p=install

4) Installing LDAP:
http://www.server-world.info/en/note?os=CentOS_5&p=ldap&f=1

5) Testing LDAP:
… to be done … I will update the article once finished.

e.g.: http://vuksan.com/linux/LDAP_authentication_under_Linux.html

2011/01/032011/05/20

Single account management

My goal is to set-up a service that can replace my AD server or my Mac OS X server.

First requirement:

All user-account log-ins are stored on a central password server.
Users can log-in from Mac OS X machines using the password on the password server.
Users can log-in from Windows machines using the password on the password server.
Users can log-in on Apache configurations using the password on the password server.

Auxiliary requirements:

Home folders are configured on the password server.
Home folders are configured on the password server but residing on a third server.
Users can log-in from Unix machines using the password on the password server.

Final goal:

Allow unlimited window users on a domain without buying individual CALs.
or
Replace Mac OS X server to run on commodity hardware.

Comments and remarks are welcome.

2010/12/292010/12/29

Multiple web-sites behind a single IP

In order to install multiple web-sites with the same IP, the web-sites have to be identified by DNS name. Secondly, one will want to have a different installation of apache for each of the individual web-sites.

I configured a set-up where I have a single forwarding proxy, and all different vm’s with individual web-services. With Apache 2.2, the config is as follows.

The firewall has a public ip, and is forwarding all requests on port 80 and port 443 to the private proxy. The proxy server has a private ip (e.g. 10.0.1.10) and is forwarding all requests to individual servers. I will present 2, but you can repeat as much as you want. The private servers are on 10.0.1.21 and up….

Activate your proxy includes by creating a symbolic link:
su root cd /etc/apache2/mods-enabled ln -s ../mods-available/proxy.load proxy.load ln -s ../mods-available/proxy_http.load proxy_http.load

Edit /etc/apache2/httpd.conf and add following sections:
UseCanonicalName On NameVirtualHost 10.0.1.10


<virtualhost 10.0.1.10>

  ServerName webmail.mydomain.com

  ServerAlias www.webmail.mydomain.com

  ProxyPreserveHost On

  ProxyPass / http://10.0.1.21/

  ProxyPassReverse / http://10.0.1.21/

</virtualhost>

<virtualhost 10.0.1.10> ServerName clientzone.mydomain.com ServerAlias www.clientzone.mydomain.com ProxyPreserveHost On ProxyPass / http://10.0.1.22/ ProxyPassReverse / http://10.0.1.22/ </virtualhost>

… that is it… simple once you know but it took me a lot of time to find it out.

2010/12/272011/05/20

Mercurial branching

Talking about Mercurial, here is a guide on how to branch:

http://stevelosh.com/blog/2009/08/a-guide-to-branching-in-mercurial/

2010/12/022011/05/20

Source control statistics

People are using following systems:

CVS 12,6%
Git/GitHub 6,8%
IBM Rational ClearCase 2,8%
IBM Rational Team Concert 0,9%
IBM Rational Telelogic Synergy Suite 0,2%
Mercurial 3,0%
Microsoft Team Foundation Server 0,8%
Microsoft Visual SourceSafe 1,6%
Perforce 3,0%
Subversion 58,3%
None – I don’t use a source code management system 5,6%
Don’t know 1,4%
Other (specify) 2,9%

Source: Eclipse Community Survey 2010