Changing the Leading Interface on Multi-Domain Server or Multi-Domain Log Server

This procedure lets you change the current Leading Interface on a Multi-Domain Server or Multi-Domain Log Server.

Note - In environments with multiple Multi-Domain Servers or Multi-Domain Log Servers, perform the procedure for each applicable Multi-Domain Server or Multi-Domain Log Server.

Workflow:

Back up the current R80.20 Multi-Domain Server
Connect to the command line on the Multi-Domain Server
Log in to the Expert mode
Stop the Multi-Domain Server
Modify the $MDSDIR/conf/LeadingIP file
Modify the $MDSDIR/conf/mdsdb/mdss.C file
Install a new license on the target Multi-Domain Server issued for the new Multi-Domain Server IP address
Modify the $MDSDIR/conf/external.if file
Start the Multi-Domain Server

Step 1 of 9: Back up the current R80.20 Multi-Domain Server

See Backing Up and Restoring.

Step 2 of 9: Connect to the command line on the Multi-Domain Server

Connect over SSH, or serial console.

Step 3 of 9: Log in to the Expert mode

Step	Description
1	Log in with the superuser credentials.
2	Log in to the Expert mode.

Step 4 of 9: Stop the Multi-Domain Server

[Expert@MDS:0]# mdsstop

Step 5 of 9: Modify the $MDSDIR/conf/LeadingIP file

Step	Description
1	Back up the current file: `[Expert@MDS:0]# cp -v $MDSDIR/conf/LeadingIP{,_BKP}`
2	Edit the current file: `[Expert@MDS:0]# vi $MDSDIR/conf/LeadingIP`
3	Change the current IP address to the new IP address.
4	Save the changes and exit the Vi editor.

Step 6 of 9: Modify the $MDSDIR/conf/mdsdb/mdss.C file

Step	Description
1	Back up the current file: `[Expert@MDS:0]# cp -v $MDSDIR/conf/mdsdb/mdss.C{,_BKP}`
2	Edit the current file: `[Expert@MDS:0]# vi $MDSDIR/conf/mdsdb/mdss.C`
3	Find the object of your Multi-Domain Server or Multi-Domain Log Server that has the current IP address.
4	Change the object's IP address to the new IP address.
5	Do not change the object's name.
6	Save the changes and exit the Vi editor.

Step 7 of 9: Install a new license on the target Multi-Domain Server issued for the new Multi-Domain Server IP address

Step	Description
1	Connect to your User Center account.
2	Issue a new license for your Multi-Domain Server or Multi-Domain Log Server for the new Multi-Domain Server IP address.
3	Get the new license and Support Contract.
4	Install the new license and Support Contract on your Multi-Domain Server or Multi-Domain Log Server.

Step 8 of 9: Modify the $MDSDIR/conf/external.if file

This step applies if you migrated the entire management database from a source Multi-Domain Server or Multi-Domain Log Server to a target Multi-Domain Server or Multi-Domain Log Server, and the target server uses a different external interface (for example, eth0 on the source server and eth1 on the target server).

Step	Description
1	Back up the current $MDSDIR/conf/external.if file: `[Expert@MDS:0]# cp -v $MDSDIR/conf/external.if{,_BKP}`
2	Edit the current `$MDSDIR/conf/external.if` file: `[Expert@MDS:0]# vi $MDSDIR/conf/external.if`
3	Change the current interface name to the name of the applicable main interface. This is the interface, on which you configured the main IPv4 address of your Multi-Domain Server or Multi-Domain Log Server.
4	Save the changes and exit the Vi editor.
5	Go to the context of each existing Domain Management Server: `[Expert@MDS:0]# mdsenv <`IP Address or Name of Domain Management Server`>`
6	Back up the current $FWDIR/conf/vip_index.conf file: `[Expert@MDS:0]# cp -v $FWDIR/conf/vip_index.conf{,_BKP}`
7	Edit the current `$FWDIR/conf/vip_index.conf` file: `[Expert@MDS:0]# vi $FWDIR/conf/vip_index.conf`
8	Change the current interface name to the name of the applicable main interface. This is the interface, on which you configured the main IPv4 address of your Multi-Domain Server or Multi-Domain Log Server.
9	Save the changes and exit the Vi editor.

Step 9 of 9: Start the Multi-Domain Server

[Expert@MDS:0]# mdsstart