Cluster startup process

Learn about the cluster startup process.

When the administrator starts the cluster using the egosh ego start all command, the processes in the cluster are started as shown in this diagram:
Cluster startup process
  1. The lim is started on the primary host.
  2. The primary lim starts both pem and vemkd on the primary host, and lim on all compute hosts.
  3. vemkd starts egosc.
  4. egosc starts SD (session director), REST, RS. plc, purger, and wsm services using pem.
  5. sd starts ssm.
  6. lim on each compute host starts pem on the same host, and reports information to the primary lim.
  7. ssm starts sim on a compute host (upon a request for resources from a client).
  8. sim starts si.