★ Installing OpenLdap on Linux – CentOS

JavaChap — Sat, 30 Jan 2010 04:02:15 +0000

Install Open Ldap Servers via YUM
```
yum install openldap-servers
```
Edit the /etc/openldap/slapd.conf file to specify the LDAP domain and server
1. To use the slapd LDAP server, modify its configuration file /etc/openldap/slapd.conf, to specify the correct domain and server. The suffix line names the domain for which the LDAP server provides information and should be changed from:suffix "dc=your-domain,dc=com"so that it reflects a fully qualified domain name. For example:
```
suffix "dc=javachap,dc=com"
```
2. The rootdn entry is the Distinguished Name (DN) for a user who is unrestricted by access controls or administrative limit parameters set for operations on the LDAP directory. The rootdn user can be thought of as the root user for the LDAP directory. In the configuration file, change the rootdn line from its default value as in the following :
```
rootdn "cn=Manager,dc=javachap,dc=com"
```
3. When populating an LDAP directory over a network, change the rootpw line — replacing the default value with an encrypted password string. To create an encrypted password string, type the following command:
```
/usr/sbin/slappasswd
```
  When prompted, type and then re-type a password. The program prints the resulting encrypted password to the shell prompt. Next, copy the newly created encrypted password into the /etc/openldap/slapd.conf on one of the rootpw lines and remove the hash mark (#). When finished, the line should look similar to the following example:
```
rootpw {SSHA}vv2y+i233234azrIv70xSSnNAJ4538bb2u
```
Copy the file /etc/openldap/DB_CONFIG.example and put it into/var/lib/ldap as DB_CONFIG
```
cp /etc/openldap/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
```

Create users.ldif with the following content. This will create 2 users admin, javachap in Admin role.

dn: dc=javachap,dc=com
dc: javachap
objectClass: domain
dn: ou=People,dc=javachap,dc=com
ou: People
objectClass: organizationalUnit
dn: ou=Groups,dc=javachap,dc=com
ou: Groups
objectClass: organizationalUnit

# Engineering Department
dn: ou=Engineering,ou=People,dc=javachap,dc=com
ou: Engineering
objectClass: organizationalUnit

# Admin Group
dn: cn=Admin,ou=Groups,dc=javachap,dc=com
gidNumber: 502
memberUid: admin
memberUid: javachap
cn: Admin
objectClass: posixGroup

# Admin User :
dn: uid=javachap,ou=Engineering,ou=People,dc=javachap,dc=com
sn: Java Chap
userPassword: e235yeXB0f343444bE45Z0s0GmM=
objectClass: shadowAccount
objectClass: person
uid: javachap
cn: Java Chap

# Admin User : admin
dn: uid=admin,ou=Engineering,ou=People,dc=javachap,dc=com
sn: Admin User
userPassword: e2452eXB02222Zk9qYjhUZVBUGmc=
objectClass: shadowAccount
objectClass: person
uid: admin
cn: Administrator

Add the users to ldap with the following command, you need to supply the root dn and password that was setup in step 2.3
```
ldapadd -x -D "cn=Manager,dc=javachap,dc=com" -w password -f users.ldif
```
Start ldap service with the command:
```
/sbin/service ldap start
```

★ Installing MediaWiki on Linux – CentOS

JavaChap — Thu, 24 Dec 2009 04:22:59 +0000

In this post we will learn how to setup a MediaWiki on CentOS. MediaWiki requires Apache web server, a database server (we’ll use MySQL), and PHP version 5. I will explain step by step process of installing these required components.

Install MySql server and mysql-php module

yum install mysql-server mysql php-mysql
/sbin/chkconfig --levels 235 mysqld on
/sbin/service mysqld start

Change 'root' user password for mysql; Create mysql wiki database and user

mysql

mysql> USE mysql;
mysql> UPDATE user SET Password=PASSWORD('newpassword') WHERE user='root';
mysql> FLUSH PRIVILEGES;
mysql> CREATE DATABASE wiki;
mysql> CREATE USER 'wikiuser'@'localhost' IDENTIFIED BY 'wikipassword';
mysql> GRANT ALL ON wiki.* TO 'wikiuser'@'localhost';
mysql> exit

Download the mediawiki, http://download.wikimedia.org/mediawiki/1.15/mediawiki 1.15.1.tar.gz
```
wget http://download.wikimedia.org/mediawiki/1.15/mediawiki-1.15.1.tar.gz
```
Untar the mediawiki to /var/www/html and give write permissions for config folder (Assuming that /var/www/html is the DocumentRoot)
```
tar -xvvf mediawiki-1.15.1.tar.gz
mv mediawiki-1.15.1 /var/www/html/wiki
```
Change the ownership of the wiki directory and grant write permissions to the config directory.
```
chown -R apache:apache /var/www/html/wiki
chmod a+w /var/www/html/wiki/config
```

Restart the apache server.

/sbin/service httpd restart
Stopping httpd:                                            [  OK  ]
Starting httpd:                                            [  OK  ]

Go to http://localhost/wiki/config/index.php
- Configure Wiki Admin username/password
- Configure MySQL database/username/password
- Click Done

Move the config/LocalSettings.php file to the parent directory

mv /var/www/html/wiki/config/LocalSettings.php /var/www/html/wiki

Access wiki http://localhost/wiki

JavaChap Blog » Linux

★ Installing OpenLdap on Linux – CentOS

★ Installing MediaWiki on Linux – CentOS