[HOWTO] Cacti Installation on CentOS

[pwozney]

Here are the sites that I used to get here:

• http://www.geekamongus.com/2009/01/31/c ... 10-part-1/
  http://cactiusers.org/wiki/PluginArchitectureInstall
  http://cactiusers.org/wiki/PluginsInstall
  http://docs.cacti.net/plugin:realtime
  http://docs.cacti.net/plugin:settings
  http://docs.cacti.net/plugin:thold
  http://www.eric-a-hall.com/software/cacti-cisco-memory/

Server Software Installation
yum update
yum install -y mysql mysql-server httpd mod_ssl php php-snmp php-mysql net-snmp net-snmp-utils rrdtool cacti
Start MySQL and apache, and make sure they start on boot

• service mysqld start
  service httpd start
  service sendmail start
  chkconfig httpd on --levels 235
  chkconfig mysqld on --levels 235
  chkconfig sendmail on --levels 235

If you are running SELinux, it is necessary to modify allow the webserver to use sendmail
setsebool httpd_can_sendmail on

Configuring MySQL, HTTP
/usr/bin/mysql_secure_installation

• current root password is BLANK
  set root password to: STRONGPASSWORD1
  remove anonymous users
  disallow remote root login
  remove test database
  reload privilege tables

mysqladmin -u root -p create cacti
mysql -p cacti < /usr/share/doc/cacti-0.8.7e/cacti.sql
mysql -u root -p mysql

• GRANT ALL ON cacti.* TO cactiuser@localhost IDENTIFIED BY 'STRONGPASSWORD2';
  flush privileges;
  exit

Configuring Cacti
cp /etc/cacti/db.php /etc/cacti/db.php.orig
vi /etc/cacti/db.php

• $database_password = "STRONGPASSWORD2";

vi /etc/cron.d/cacti

• Remove the # from the beginning of this line so it looks like this:
  */5 * * * * cacti /usr/bin/php /usr/share/cacti/poller.php > /dev/null 2>&1

vi /etc/httpd/conf.d/cacti.conf

• #
  # Cacti: An rrd based graphing tool
  #
  Alias /cacti /usr/share/cacti
  
  <Directory /usr/share/cacti/>
  • Order Deny,Allow
    Deny from all
    Allow from all
  </Directory>

Installing the Plugin Architecture
Find the link for the latest PA version (plugin architecture)

• http://cactiusers.org/downloads/patches/

wget http://mirror.cactiusers.org/downloads/ ... A-v2.6.zip
unzip cacti-plugin-0.8.7e-PA-v2.6.zip
cp -r cacti-plugin-arch/files-0.8.7e/* /usr/share/cacti
mysql -p cacti < cacti-plugin-arch/pa.sql
vi /usr/share/cacti/include/global.php

• $database_password = "STRONGPASSWORD2";
  $config['url_path'] = '/cacti/';

Installing the Plugins

• http://docs.cacti.net/plugin:realtime

wget -O realtime-0.4.0-1.tar.gz http://docs.cacti.net/_media/plugin:rea ... ache=cache

• http://docs.cacti.net/plugin:settings

wget -O settings-latest.tgz http://docs.cacti.net/_media/plugin:set ... ache=cache

• http://docs.cacti.net/plugin:thold

wget -O thold-latest.tgz http://docs.cacti.net/_media/plugin:tho ... ache=cache
cp realtime-0.4.0-1.tar.gz /usr/share/cacti/plugins
cp settings-latest.tgz /usr/share/cacti/plugins
cp thold-latest.tgz /usr/share/cacti/plugins
cd /usr/share/cacti/plugins/
tar -zxf /usr/share/cacti/plugins/realtime-0.4.0-1.tar.gz
tar -zxf /usr/share/cacti/plugins/settings-latest.tgz
tar -zxf /usr/share/cacti/plugins/thold-latest.tgz
ln -s /usr/share/cacti/plugins/settings-0.6 /usr/share/cacti/plugins/settings
ln -s /usr/share/cacti/plugins/thold-0.41 /usr/share/cacti/plugins/thold
chown -R root:root /usr/share/cacti/plugins/*
chmod -R 755 /usr/share/cacti/plugins/realtime
chmod -R 755 /usr/share/cacti/plugins/settings
chmod -R 755 /usr/share/cacti/plugins/thold
mkdir /usr/share/cacti/realtime-rrd

If you are running SELinux, it is necessary to modify the settings of realtime (more on this later).
chcon -R -t httpd_cache_t /usr/share/cacti/realtime-rrd

Final Cacti Configuration
browse to http://serverip/cacti

• Next
  Select New Install - Next
  Finish
  Log in as admin/admin
  • change admin password to: STRONGPASSWORD3
  User Management
  • check the box to allow Plugin Management and Save
  Plugin Management
  • Install and Enable Settings
    Install and Enable Realtime
    Install and Enable Thresholds
  User Management
  • check the box to allow View Thresholds
    check the box to allow Plugin -> Realtime and Save
  Settings
  • Misc
  • Set the Cache Directory to realtime-rrd

Creating Device Graphs
Devices

• Add a device, and specify IP and SNMP credentials
  If SNMP is successful you will see SNMP Information in the top left of the device screen
  By default it should have added the SNMP – Interface Statistics to the Associated Data. You can also verify the status of the SNMP – Interface Statistics Data Query – it should say “success” and show a bunch of items and rows. If you're really curious, you can click Verbose Query to get the raw SNMP data.
  Create Graphs for this Host
  • Under Data Query, select the interfaces you need
    Select the appropriate Graph Type
    • For 10/100 interfaces you can use In/Out bits with 95th Percentile
      For GigE interfaces you can use In/Out bits (64 bit counters)
      Currently VLAN interfaces don't report statistics properly so don't bother
  Click Create

Managing the Graph Tree
Graph Trees

• Click Add
  • Tree Item Type – Host
    Choose the Host that you want added to the tree

Additional Templates
Cisco – CPU Usage Graph Template
Add the template to your device, and create graphs

• Devices
  Choose your device
  Associated Graph Template
  • Add Cisco – CPU Usage
  Save
  Create Graphs for this Host
  • Under Graph Templates, select Cisco – CPU Usage
    Graph Type can be In/Out bits with 95th Percentile
  Click Create

Cisco Router Memory Usage Data Query

• http://www.eric-a-hall.com/software/cacti-cisco-memory/

wget http://www.eric-a-hall.com/software/cac ... 0.3.tar.gz
tar -zxf cacti-cisco-memory.0.3.tar.gz
cd cacti-cisco-memory
cp resource/cisco_memory.xml /usr/share/cacti/resource/snmp_queries/
browse to http://serverip/cacti

• Import Templates
  Choose File template/cisco_memory_data_query.xml
  Save

Now you just need to add the template to your device, and create graphs

• Devices
  Choose your device
  Associated Data Queries
  • Add Cisco Router – Memory Usage
  Save
  Create Graphs for this Host
  • Under the Memory Pool Data Query, select all three graphs
    Graph Type can be In/Out bits with 95th Percentile
  Click Create

[BSOD2600]

Nice job.

[Netcooler]

nicely done..

just modified a few things for my install and noting that I never found a db.php file...


other than that I am up nd running fine. Needed to do this to proof an issue I am having at work from home. Thanks - I believe running through this was a great help!

[Trivian]

Great instructions, thanks!
One thing: in the line where you wrote:
chkconfig -level 345 mysqld on
your blogging software evidently converted the regular ASCII “-” character into a high-order ASCII character 0×96, a “high-order ASCII dash”.

[bluebeam123]

Hi.

Nice job !! i do step by step and it's working.

[anamika]

Got it working with Cacti 0.8.7 and Mactrack 1.1 by pasting in the "get_netscreen_arp_table" part into the bottom of mactrack_functions.php.

[moriteza]

hello every one I am finish installation.
when redirect to the login page I do not see any login box.