introduction to ganglia on ubuntu

introduction to ganglia on ubuntu 14.04

1. master node

   1. install ganglia monitor, rrdtool, gmetad, ganglia web front end

       $ sudo apt-get install -y ganglia-monitor rrdtool gmetad ganglia-webfrontend
      

   2. config site-enabled

       $ sudo cp /etc/ganglia-webfrontend/apache.conf /etc/apache2/sites-enabled/ganglia.conf
      

   3. edit gmetad config

       $ sudo pico /etc/ganglia/gmetad.conf
       ...
       data_source "hadoop_cluster" 60 localhost
       ...
      

   4. edit gmond config

       $ sudo pico /etc/ganglia/gmond.conf
       ...
       # 1. cluster
       cluster {
           # name from `gmetad.conf`
           name = "hadoop_cluster"
           owner = "unspecified"
           latlong = "unspecified"
           url = "unspecified"
       }
       ...
      
       # 2. udp_send_channel
       udp_send_channel {
           # comment out
           # mcast_join = node5
           host = localhost
           port = 8649
           ttl = 1
       }
       ...
      
       # 3. udp_recv_channel
       udp_recv_channel {
           # comment out
           # mcast_join = node5
           port = 8649
           # comment out
           # bind = node5
       }
      
       tcp_accept_channel {
           port = 8649
       }
      

   5. restart service

       $ sudo service ganglia-monitor restart && sudo service gmetad restart && sudo service apache2 restart
      

2. web interface browser http://node5/ganglia

3. client

   1. install

       $ sudo apt-get install -y ganglia-monitor
      

   2. edit gmond conf

       $ sudo pico /etc/ganglia/gmond.conf
       ...
       # 1. cluster
       cluster {
           # cluster name
           name = "hadoop_cluster"
           owner = "unspecified"
           latlong = "unspecified"
           url = "unspecified"
       }
       ...
       # 2. udp_send_channel
       udp_send_channel {
           # comment out
           # mcast_join = node5
           host = node5
           port = 8649
           ttl = 1
       }
       # 3. udp_recv_channel
       /*
       udp_recv_channel {
           mcast_join = node5
           port = 8649
           bind = node5
       }
       */
      

   3. restart

       $ sudo service ganglia-monitor restart
      

4. grids

   1. create grid and update data_source

       $ sudo pico /etc/ganglia/gmetad.conf
       ...
       # 1. gridname
       gridname "beijing"
      
       # 2. update `data_source`
       data_source "servers" localhost 1.1.1.2:8556
       data_source "databases" 1.2.1.1:8557 1.2.1.2:8557
      

   2. edit gmond config

       # update `name` value
       $ sudo pico /etc/ganglia/gmond.conf
       # ...
       cluster {
           name = "databases"
           owner = "unspecified"
           latlong = "unspecified"
           url = "unspecified"
       }
       # ... do not comment out `mcast_join`
       udp_send_channel {
           mcast_join = node5
           port = 8557
           ttl = 1
       }
       # ... do not comment out `mcast_join`
       udp_recv_channel {
           mcast_join = node5
           port = 8557
           bind = node5
       }
       # ...
       tcp_accept_channel {
           port = 8557
       }
      

   3. restart ganglia-monitor on each node

       $ sudo service ganglia-monitor restart
      

   4. restart ganglia-monitor, gmetad and apache2 on master node

       $ sudo service ganglia-monitor restart && sudo service gmetad restart && sudo service apache2 restart