About this task
In this example, return an upgraded version
of CLY1 to the original sharded deployment by performing the following
tasks, as shown in Figure 1:
Procedure
- In sharded mode, install a new Release 9.4
run time (Production_V2). When installing Production_V2, database
information for the METADATA shard is shared between Production_V1
and Production_V2. The METADATA shard contains database information
about CLY2 and CLY3, and their shards.
Note: The
DEFAULT colony is included with all new sharded installations.
- Use the CDT to move configuration data for
CLY1 and DEFAULT from Upgrade_V2 to Production_V2. The database pointers
for CLY1's shards are redirected from Upgrade_V2 to Production_V2,
as shown in Figure 1.
The shards include CLY1's TRANSACTION/MASTER shard. However, CLY1's
METADATA shard points at the Production_V1 shard.
Results
Production_V2 is the new version upgrade
environment. Production_V2 is a sharded deployment with CLY1 running
on Release 9.4. CLY2 and CLY3 are running on Release 9.3. All the
customizations and postmigration activities are performed on the new
upgrade environment, as shown in Figure 1.
Figure 1. Return CLY1 to original sharded environment