7.2.2. Write the DRBD Config

There is no series of commands for build a DRBD configuration, so simply copy the configuration below to /etc/drbd.conf

Detailed information on the directives used in this configuration (and other alternatives) is available from http://www.drbd.org/users-guide/ch-configure.html

Warning

Be sure to use the names and addresses of your nodes if they differ from the ones used in this guide.

global { 
  usage-count yes; 
}
common {
  protocol C;
}
resource wwwdata {
  meta-disk internal;
  device    /dev/drbd1;
  syncer {
    verify-alg sha1;
  }
  net { 
    allow-two-primaries; 
  }
  on pcmk-1 {
    disk      /dev/mapper/VolGroup-drbd--demo;
    address   192.168.122.101:7789; 
  }
  on 
pcmk-2 {
    disk      /dev/mapper/VolGroup-drbd--demo;
    address   192.168.122.102:7789;      
  }
}

Note

TODO: Explain the reason for the allow-two-primaries option