Avaya Media Processing Server Series System (Software Release 2.1) Uživatelský manuál stáhnout pdf (Strana 271)

Configuration Procedures and Considerations

# P0602477 Ver: 3.1.11 Page 271

Least Cost Routing Daemon

If the Least Cost Routing (LCR) daemon is configured on a primary node then you

must do the following:

•Run the lcrinstall script on the secondary node.

• Add the secondary node name to the

$MPSHOME/common/etc/nameservers.cfg file on each primary node.

Redundancy Configuration Daemon (RCD)

Redundancy Configuration Daemon (RCD) is the process that runs in the

common/gen group on every node in the cluster and is responsible for:

• Configuration setup on the secondary node during failover and failback.

• Configuration synchronization between primaries and the secondary.

The configuration synchronization feature keeps configuration, media, and other files

in sync between primary and secondary nodes. To sync the files:

1. Secondary RCD (RCD residing on a secondary node) requests a list of

files that needs to be kept in sync from every primary RCD (together with

files last modification times).

2. Secondary RCD compares last modification times of the local and remote

copies of the files and marks a file for update if the times do not match.

3. Secondary RCD pulls files that are marked for update from a primary

node into a staging area and sets the last modification time corresponding

to the remote copy to eliminate effect of non-synchronized clocks.

4. If all the files are transferred successfully, the outdated files are replaced

with the fresh copy.

If files or directories are manually deleted from the primary node, the corresponding

files or directories must also be manually deleted from the secondary node.

The following types of files can be kept synchronized:

• Component-specific configuration files (e.g., trip.cfg). Files and

directories of this type reside in the $MPSHOME/common and

$MPSHOME/mpsN directories on a primary node. Files located in the

$MPSHOME/mpsN directory are copied to the same location on a secondary

node, and files located in $MPSHOME/common are copied to the

$MPSHOME/common.<primary_node_name> directory on the

secondary node (except that $MPSHOME can be different). You can specify

which component-specific files (or directories) will be kept in sync by using

the RCD option syncCompDirs on a primary node.

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Avaya Media Processing Server Series System (Software Release 2.1) Uživatelský manuál Strana 271