= Cacti = Through this hands-on you will install cacti monitoring system and create device entry for your workshop router and switch. You will also create graphs and arrange a graph hierarchy. Finally you will install some cacti plug-ins. == Installation == You can easily install cacti by following {{{ # apt-get install cacti }}} * While the installation process you will be ask for a '''password''' for mysql server. Please give the ''''''. * Select '''Apache2''' as the webserver type * Select '''Yes''' to Configure database for cacti with dbconfig-common? * Again give the '''''' for the database administrative user. * You have complete the cacti installation. open a web browser in your host PC and give the following url. '''http:///cacti''' * Click '''next''' * Select '''New Install''' and click '''next''' * Click '''Finish''' and you will be directed to the cacti login page * Use default username and password to login User name : '''admin''' Password : '''admin''' * Now you have logged in to cacti monitoring system. === small modification === In your default installation mysql server runs in strict mode. let's disable it. Create the following file {{{ sudo vi /etc/mysql/conf.d/disable_strict_mode.cnf }}} Add the following line {{{ [mysqld] sql_mode=IGNORE_SPACE,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION }}} Restart the service {{{ sudo service mysql restart }}} == Configuration == === Change admin password === * First click to '''Console''' tab. Then click on '''User Management''' on the left side bar. * In the User Management page click on the user name '''admin'''. * In the password text box give the and click '''Save'''. === Cacti Graphs === * Click the '''Graphs''' tab. You will see '''Default Tree''' Icon on the side bar. * expand it click on the '''localhost''' icon. You will see some graphs. (Might not have any values as it take time to generate values) * These graphs will show the values of your VM. === Adding Devices === Now let's add some other devices to the system. We will add the workshop switch and the workshop router. * Go to '''Console''' and click the '''Devices'''. * Click '''Add''' on the devices page. Now you can add the workshop router and the work shop switch and you will be directed to the add devices page. First add the Workshop Switch * Give following settings description : '''workshp_sw''' Hostname : '''192.248.7.249''' Host Template : '''Generic SNMP-enabled Host''' Number of Collection Threads : '''1''' Downed Device Detection : '''Ping''' Ping Method : '''ICMP Ping''' SNMP Version : '''version 2''' SNMP Community : '''NetManage''' * Click '''Create''' and then click '''Save''' * You can add the workshop router as with the same settings with the correct IP address === Creating Graphs === Now that we have add devices let's create some graphs so we can monitor our devices. * Go to '''Console''' and click the '''New Graphs'''. * Select '''workshp_sw''' and it will show you all the available graphs. Also you can create new graphs from graphs template. * To create a graph to measure ping latency select '''Unix-Ping Latency''' in the graph templates window. and click '''Create''' * Keep the default legend color and value and click '''create''' * Lets create graphs to measure the Network interfaces of the switch. To do that select the Network interfaces in the '''SNMP - Interface Statistics''' and click '''Create''' * You can do the same and create graphs for the workshop router === Managing Graphs Trees=== Now let's create graph trees. So we can view the graphs in the graph section. * Go to '''Console''' and click the '''Graph Trees'''. * Click '''Add''' and give '''Network devices'''. Keep the parent item as '''[root]''' * Click '''Create'''. * Add another two trees. One for the workshop Router (ws_rtr) and another for workshop switch(ws_sw). Keep the parent item of these created trees as '''[Network Devices]''' === Adding Graphs to the graph tree === Let's add the graphs of sorkshop switch and workshop router to their graph trees. * Go to '''Console''' and click the '''Graph Management'''. * Select '''workshp_sw''' from the '''host''' drop down menu. * You will see all the graphs from the workshop switch select them all and select '''Place on a Tree''' from the '''choose an action''' drop down menu. * Click '''Go''' and select '''ws_sw''' from the '''Destination Branch:''' drop down menu. * click '''Continue''' * Do the same to the workshop router. * Go to Graphs and check whether you can monitor the devices. == Cacti Plugins == Cacti monitoring system have plenty of plugins available. You can download and install them. Let install the threshold plugin * Go to '''/usr/share/cacti/sites/plugins''' * To install threshold or thold pluging you also need the setting plugin to be install. Lets install both. First download the plugins {{{ sudo wget http://192.248.4.49/NetMon/settings.tar.gz sudo wget http://192.248.4.49/NetMon/thold.tar.gz }}} * Extract the files {{{ sudo tar -zxvf settings.tar.gz sudo tar -zxvf thold.tar.gz }}} * Now go to cacti web interface and go to '''Console''' and click '''Plugin Management''' * You will see the downloaded plugins. Install both plugins by clicking the blue arrow icon. and enable the plugin by clicking the green arrow icon. * You have successfully install the thold plugin. * Now let's create a threshold. Go to '''Console''' and click '''Settings''' '''In the workshop we will not set up e-mail notification. Therefore skip next two steps.''' * Go to '''DNS/Mail''' tab and set up the mail function details. * Then go to '''Threshold''' tab and set up the e-mail function details. and click '''save'''. * Now you can add a threshold. To do that go to '''Console''' and click '''Threshold'''. * Let's Create a threshold to notify an alarm when the ping latency of the workshop router goes above 1ms. To do that click '''add''' * Select the router from the '''host''' drop down box. Then select '''ping latency''' from the '''graph''' drop down list and finally select '''ping''' form the '''data select''' drop down list. * Click '''Create''' * Set the Warning High Threshold as 2ms and set the Alert high threshold as 1ms. Click '''save''' * Now you have add a threshold. But this might not show as you skipped the e mail set up.