Rejoin a Cluster Node Manually

Use this task to rejoin a cluster node manually with the cluster when this node is down for more than 24 hours, has a failure, or it is stopped.

Note:

Oracle recommends that you perform this task during a planned downtime, such as a maintenance period to avoid system disruption.

Log into the OCSDM GUI on a node belonging to the running cluster.
Select Tools, Health Monitor.
In the Health Monitor Console pane, view the Heartbeat Summary table and record the cluster member node that is running the master databases.
Log into the master cluster member node as the nncentral user.
Change directory to the bin directory.
For example:
```
cd /home/nncentral/AcmePacket/NNC8x/bin
```
Execute the shutdownnnc.sh script on the master cluster member node. By default, the shutdownnnc.sh script detects the clustered system and enter Yes when prompted to shut down the entire cluster.
```
./shutdownnnc.sh
Shutdown back-end server
Do you wish to shut down the entire cluster (Yes/No)? Yes
```
Enter the backupdbcold.sh script on the master cluster member node.
```
./backupdbcold.sh
```
Restore the databases on the master cluster member node If you need to restore the application database and the reporting databases on your OCSDM system, enter the restoredb.sh script followed by the directory in which the backup application database is stored, and specify the Oracle reporting database password and OCSDMDW reporting database password:
```
./restoredb.sh -f/home/nncentral/AcmePacket/NNC8x/bin/NNC8x_Backup_2017_04_19.tar.gz -z my_report_db_password -y my_ocsdmdw_db_password
```
If you are using Oracle Communications Report Manager and have shut down the Oracle BI Publisher database instance and Oracle Report Manager database instance (OCSDMDW), you must restart them. See the Report Manager Administrator Operations chapter in the Oracle Communications Report Manager Installation Guide for more information about starting these database instances.
Execute the startnnc.sh script on the cluster member node that is down that needs to rejoin the cluster.
```
./startnnc.sh
```
Execute the startnnc.sh script on the master cluster member node.
```
./startnnc.sh
```

Next Steps

Select Tools, Health Monitor and view the Heartbeat Summary table to check OCSDM cluster member node processes.
Begin using OCSDM. Use your web browser to navigate to the server login page by entering the host name or IP address, and port number in the web browser navigation bar. For example:
```
http://example.com:8080
```
In the login page, enter the administrator login name and password that you configured in the Configure User Account Passwords section.
After the server starts after the backup of its databases, it attempts to synchronize all plugins installed on the local file system again. Select Tools, Plugin Management in the OCSDM GUI to ensure that all plugins are working properly in the Element Manager Plugins table.