[yugabyted] xCluster Integration with yugabyted.

[gargsans-yb]

Jira Link: DB-11256

Description

Set-up and manage xCluster replication between clusters with yugabyted.

Feature	Status
Create xCluster Checkpoint
Set-up xCluster replication
Deleting xCluster replication
Add database to a replication
Remove database from a replication

Set-up source cluster and create the schema for the databases to be replicated.

Checkpoint a xcluster replication:

Run on Source Node:

./bin/yugabyted xcluster checkpoint --replication_id <replication_id> --databases <comma_separated_list_of_databases>

--databases (Mandatory Flag): Comma separated list of databases to be added to the replication.
--replication_id (Mandatory Flag): A unique string to be defined by user which will be used to uniquely identify the replication.

Set-up a xcluster replication:

Run on Source Node:

./yugabyted xcluster set_up --replication_id <replication_id> --target_address <ip_of_target_node> --bootstrap_done

--target_address (Mandatory Flag): IP of any 1 of the target cluster nodes.
--replication_id (Mandatory Flag): replication_id for which replication is to be set-up.
--bootstrap_done (Mandatory Flag only when bootstrap is required to set-up xcluster): This flag indicates that the user has completed the required bootstrapping step.

See status of xcluster:

Run on any node:

./yugabyted xcluster status --base_dir ~/yb-cluster/node2 --replication_id test-xcluster1

--replication_id (Optional Flag): replication_id for which status is to be shown.

Delete a xcluster replication:

Run on source node:

./yugabyted xcluster delete --replication_id <replication_id> --target_address <ip_of_target_node>

--target_address (Mandatory Flag): IP of any 1 of the target cluster nodes.
--replication_id (Mandatory Flag): replication_id of the replication which is to be deleted.

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