What I See

What I See

Zubair AHMED  //  Thinking Supersonic

 
Apr 13 / 3:22pm

Installing OpneNMS on CentOS - using RPM.

by Zubair AHMED
As from my previous post. This again is for the IT Team. Was helping them setup and network Monitoring tool.

Here are the step to follow to install OpenNMS.

Step 1: configure the OpenNMS Repository RPM
]# yum install yum-fastestmirror
Step 2: Install the Prerequisite Package: Java
To install java you would download “jdk-7u3-linux-x64.rpm “fromhttp://www.oracle.com/technetwork/java/javase/downloads/jdk-7u3-download-1501626.html  and place it in your current working directory then run bellow command 
]$ sudo rpm -ivh jdk-7u3-linux-x64.rpm 
Step 2: Install the Prerequisite Package: PostgreSQL
To install PostgreSQL follow bellow commands
]$ sudo yum -y install postgresql-server
]# /etc/init.d/postgresql start  
]# /sbin/chkconfig postgresql on  
Configure PostgreSQL
Locate the Postgres "data" directory. Often this is /var/lib/pgsql/data and Open /var/lib/pgsql/data/ postgresql.conf in text editor.
]$ vi /var/lib/pgsql/data/postgresql.conf 
 Now uncomment/edit bellow lines as shown         
          listen_addresses = 'localhost'
      max_connections = 256
      shared_buffers = 1024
Similarly edit pg_hba.conf file .In the bottom of the file, replace “ident” with “trust” for all.
]# vi /var/lib/pgsql/data/ pg_hba.conf
]# /etc/init.d/postgresql restart 
Step 3: Install the Prerequisite Package: jicmp
]# yum install jicmp 

Step 4: Install the OpenNMS Repository RPM

To install the latest stable release (opennms-repo-stable-rhel6.noarch) on CentOS , you would run bellow commands
]# yum install opennms 
Configure java for OpenNMS (note: after –s give the path where java installed).
]# /opt/opennms/bin/runjava –s /usr/bin/java
]# /opt/opennms/bin/install -dis
Add automatic startup of opennms in your current runlevel
]# /sbin/chkconfig  opennms on 
]# /sbin/service opennms start
 To Add a Firewall Exception for OpenNMS
]# vi /etc/sysconfig/iptables
Now add the bellow line for giving exception for port 8980
-A INPUT -m state --state NEW -m tcp -p tcp --dport 8980 -j ACCEPT
]# /sbin/service iptables restart
Now we can connect to the Web UI of opennms with bellow link
And log in as
User: admin
Password: admin

 

 
Apr 13 / 3:21pm

Installation OTRS 3.1 on CentOS 6.2 Running PostGreSQL 9.1

by Zubair AHMED

I was working on getting and Ops tools for our IT Department,

I had heard a lot about OTRS, so though to try it out. I have installed OTRS in CentOS 6.2 Running PostGreSQL 9.1

Below are the steps to get it up and running.

Lets Start then.

System Information:

[ahmed@localhost ~]$ uname -a
Linux localhost.localdomain 2.6.32-220.7.1.el6.x86_64 #1 SMP Wed Mar 7 00:52:02 GMT 2012 x86_64 x86_64 x86_64 GNU/Linux
[ahmed@localhost ~]$ cat /etc/redhat-release
CentOS release 6.2 (Final)


Lets start by updating system (Optional)

[ahmed@localhost Downloads]$ sudo yum update
[ahmed@localhost Downloads]$ sudo yum update yum


Installing httpd

[ahmed@localhost Downloads]$ sudo yum install httpd


(Below command Optional - if already exsists)

[ahmed@localhost Downloads]$ sudo yum update httpd

Now lets Install PostgreSQL - Downloaded this from the below link.
http://www.enterprisedb.com/products-services-training/pgdownload


[ahmed@localhost Downloads]$ ls
OpenNMS-1.2.0.opm         postgresql-9.1.3-1-linux-x64.run
otrs-3.1.3-03.noarch.rpm  xampp-linux-1.7.7.tar.gz
[ahmed@localhost Downloads]$ sudo ./postgresql-9.1.3-1-linux-x64.run


Lets Download and check dependencies for OTRS.
Download link below:
http://ftp.otrs.org/pub/otrs/RPMS/fedora/4/otrs-3.1.3-03.noarch.rpm


[ahmed@localhost Downloads]$ wget http://ftp.otrs.org/pub/otrs/RPMS/fedora/4/otrs-3.1.3-03.noarch.rpm
[ahmed@localhost Downloads]$ rpm -qpR otrs-3.1.3-03.noarch.rpm 
perl  
perl(DBI)  
perl(URI)  
mod_perl  
httpd  
procmail  
perl(Date::Format)  
perl(LWP::UserAgent)  
perl(Net::DNS)  
perl(IO::Socket::SSL)  
perl(XML::Parser)  
/bin/sh  
/bin/sh  
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(PayloadIsBzip2) <= 3.0.5-1


Now lets install all Dependencies.

[ahmed@localhost Downloads]$ sudo yum install perl "perl(DBI)" "perl(URI)" mod_perl procmail "perl(Date::Format)" "perl(LWP::UserAgent)" "perl(Net::DNS)" "perl(IO::Socket::SSL)" "perl(XML::Parser)"


Running Transaction
  Installing : 1:perl-ExtUtils-ParseXS-2.2003.0-119.el6_1.1.x86_64          1/8 
  Installing : 4:perl-devel-5.10.1-119.el6_1.1.x86_64                       2/8 
  Installing : perl-Test-Harness-3.17-119.el6_1.1.x86_64                    3/8 
  Installing : perl-ExtUtils-MakeMaker-6.55-119.el6_1.1.x86_64              4/8 
  Installing : perl-BSD-Resource-1.29.03-3.el6.x86_64                       5/8 
  Installing : mod_perl-2.0.4-10.el6.x86_64                                 6/8 
  Installing : perl-URI-1.40-2.el6.noarch                                   7/8 
  Installing : perl-DBI-1.609-4.el6.x86_64                                  8/8 

Installed:
  mod_perl.x86_64 0:2.0.4-10.el6          perl-DBI.x86_64 0:1.609-4.el6         
  perl-URI.noarch 0:1.40-2.el6           

Dependency Installed:
  perl-BSD-Resource.x86_64 0:1.29.03-3.el6                                      
  perl-ExtUtils-MakeMaker.x86_64 0:6.55-119.el6_1.1                             
  perl-ExtUtils-ParseXS.x86_64 1:2.2003.0-119.el6_1.1                           
  perl-Test-Harness.x86_64 0:3.17-119.el6_1.1                                   
  perl-devel.x86_64 4:5.10.1-119.el6_1.1                                        

Complete!


Now Install OTRS without Dependencies as we need to install it on PostgreSQL.

[ahmed@localhost Downloads]$ sudo rpm --nodeps -Uvh otrs-3.1.3-03.noarch.rpm 
Preparing...                ########################################### [100%]
Check OTRS user ... otrs added.
   1:otrs                   ########################################### [100%]
Next steps: 
[httpd services]
 Restart httpd 'service httpd restart'
[install the OTRS database]
 Make sure your database server is running.
 Use a web browser and open this link:
 http://localhost/otrs/installer.pl
[OTRS services]
 Start OTRS 'service otrs start' (service otrs {start|stop|status|restart).
((enjoy))
 Your OTRS Team

Now Check Again Dependencies if any are missing, you can install it using the below command.


[ahmed@localhost Downloads]$ cd /opt/otrs/bin
[ahmed@localhost bin]$ ./otrs.CheckModules.pl
   o CGI..............................ok (v3.59)
   o Crypt::PasswdMD5.................ok (v1.3)
   o CSS::Minifier....................ok (v0.01)
   o Date::Format.....................ok (v2.22)
   o Date::Pcalc......................ok (v1.2)
   o DBI..............................ok (v1.609)
..............


[ahmed@localhost bin]$ sudo yum install "perl(DBD::Pg)" "perl(Digest::SHA)" "perl(GD)" "perl(Text::CSV_XS)" "perl(PDF::API2)" "perl(Net::LDAP)" "perl(Mail::IMAPClient)" "perl(JSON::XS)" "perl(GD::Text::Align)" "perl(GD::Graph::lines)" "perl(GD::Graph)" "perl(GD::Text)" "perl(Encode::HanExtra)"


(Optional - Just an FYI) Missing Modules can be searched using this command.

[ahmed@localhost bin]$ yum --noplugins --showduplicates --enablerepo \* --disablerepo c6-media,\*debug\*,\*-source list \*pdf\*
[ahmed@localhost bin]$ yum --noplugins --showduplicates --enablerepo \* --disablerepo c6-media,\*debug\*,\*-source list \*json\*


Now create a user 'otrs' and update information as below.

[ahmed@localhost bin]$ ./psql -U postgres 
Password for user postgres: 
psql.bin (9.1.3)
Type "help" for help.

postgres=# create role otrs password 'hot' nosuperuser;
CREATE ROLE
postgres=# create database otrs owner otrs;
CREATE DATABASE
postgres=# alter role otrs with login;
ALTER ROLE
postgres=#\q

[ahmed@localhost database]$ cd /opt/otrs/scripts/database
[ahmed@localhost database]$ ./opt/postgresql/bin/psql -U otrs otrs -f otrs-schema.postgresql.sql
[ahmed@localhost database]$ ./opt/postgresql/bin/psql -U otrs otrs -f otrs-initial_insert.postgresql.sql
[ahmed@localhost database]$ ./opt/postgresql/bin/psql -U otrs otrs -f otrs-schema-post.postgresql.sql


# Add user otrs
[ahmed@localhost database]$ useradd -d /opt/otrs/ -c 'OTRS user' otrs

# Add otrs user to apache-group[ahmed@localhost database]$ usermod -G apache otrs

# Change to otrs directory ( /opt/otrs/ )[ahmed@localhost database]$ cd /opt/otrs/



Run the permission script.

[ahmed@localhost database]$ sudo /opt/otrs/bin/otrs.SetPermissions.pl /opt/otrs --otrs-user=otrs --web-user=apache --otrs-group=apache --web-group=apache
bin/otrs.SetPermissions.pl <1.4> - set OTRS file permissions
Copyright (C) 2001-2010 OTRS AG, http://otrs.org/
Setting permissions on /opt/otrs
Setting permissions on /opt/otrs/var
Setting permissions on /opt/otrs/bin/*
Setting permissions on /opt/otrs/scripts/*.pl
Setting permissions on /opt/otrs/scripts/tools/*.pl
Setting permissions on Kernel/Config.pm
Setting owner rw and group ro permissions on /opt/otrs/
Setting owner rw and group ro permissions on /opt/otrs/.procmailrc
Setting owner rw and group ro permissions on /opt/otrs/.fetchmailrc


MAKE SURE SELINUX is disabled.


[ahmed@localhost ~]$ vim /etc/sysconfig/selinux 
[ahmed@localhost ~]$
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted


Modify the default parameters, since mysql is the default database
open the file /opt/otrs/Kernel/Config.pm and
comment the line

    $Self->{DatabaseDSN}= "DBI:mysql:database=$Self->{Database};host=$Self->{DatabaseHost};";

to disable mysql, and uncomment the line

    $Self->{DatabaseDSN} = "DBI:Pg:dbname=$Self->{Database};";

and don't forget to set the dbuser and password to one you created some steps ago
 
 Now Lets start httpd

[ahmed@localhost Downloads]$ sudo /etc/init.d/httpd start
Starting httpd:                                                        [  OK  ]


PostgreSQL and OTRS.
[ahmed@localhost Downloads]$ sudo /etc/init.d/postgresql-9.1 start
[ahmed@localhost Downloads]$ sudo /etc/init.d/otrs start

 

Filed under  //  HOWTOs