This chapter provides information about configuring a Sentinel HA setup as SSDM. These instructions are applicable for both traditional and appliance installations.
To configure Sentinel HA setup as SSDM:
Install and configure scalable storage for Sentinel. For more information, see Section 13.0, Installing and Setting Up Scalable Storage.
Enable scalable storage on the active node. For more information, see Enabling Scalable Storage Post-Installation
in the Sentinel Administration Guide.
Run the following command on the active node:
csync2 -x -v
This synchronizes the SSDM configuration to all the passive nodes.
(Conditional) If the csync2 -x -v command you run in Step 3 fails to synchronize all the files, perform the following steps:
Clear the csync2 database (in the /var/lib/csync2 directory) on all the nodes.
Run the following command on all servers to update the csync2 database to match the filesystem, but without marking anything as needing to be synchronized to other servers:
csync2 -cIr /
Run the following command to find all the differences between authoritative server and remote servers, and mark for synchronization:
csync2 -TUXI
Run the following command to reset the database to force the current server to be winner on any conflicts:
csync2 -fr /
Run the following command to start a synchronization to all the other servers:
csync2 -xr /
Run the following command to verify that all the files are synchronized:
csync2 -T
This command will not list any files if the synchronization is successful.