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7.3.2. Write the DRBD Config

There is no series of commands for building 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