|
|
Upgrading VNS software is performed in several steps. This involves taking one of the redundant pairs of VNS's off-line so the user will need to schedule a maintenance window of at least 5 hours when performing the upgrade. During the upgrade, there will not be a redundant VNS. You should carefully schedule this upgrade.
A VNS software upgrade is performed in several steps as described in the following sections:
You use the VNS Command Line Interface (CLI) to shut down the VNS that is currently in standby. To shut down the standby VNS, follow these steps:
Step 1 Log in to one of the VNS's in a redundant pair.
Step 2 Start the VNS CLI.
Step 3 From the VNS CLI main menu, select option 3, Modify an Entry. (The Modify an Entry submenu, which is identical to the Add an Entry submenu, will appear.)
Step 4 From the Modify an Entry submenu, select option 12, More VNS Info and Redundancy Info. (A More VNS Info and Redundancy menu appears.)
Step 5 Search through these records until you find the record with the VNS Operation Role of 2 which indicates the unit is the standby unit.
Step 6 On that VNS Info and Redundancy Info menu set the Admin Status to 4 (shutdown).
Step 7 Tab down to Enter 'c' to commit changes or 'q' to quit [ ] field. Enter c to commit the record. The VNS process will shut down after the grace period.
To load the new software, follow these steps:
Step 1 FTP the tar format software release to /tmp.
Step 2 Execute the script:
The Upgrade Installation procedure will save the old database to a save location in case a fall back is necessary.
VNS also provides a downgrade script that you can use to restore the previous version of software. To downgrade your software:
Step 1 Execute the script:
To bring up the standby VNS, follow these steps:
Step 1 At the UNIX prompt on the standby VNS, enter restart_VNS.
Step 2 Log in to the Active VNS and to verify that the standby VNS has gone online. Verify that standby is on-line by monitoring the Active VNS's redundancy record:
Start the VNS CLI, and select option 4 from the main menu, Browse Data Base. (The Browse Data Base menu, which is identical to the Add and entry menu, appears.)
Step 3 Select option 12, "More VNS Info and Redundancy Info". (The More VNS Info and Redundancy Information menu appears.)
Step 4 Find the More VNS Info and Redundancy Info menu for the standby VNS and check that the Operational Status is 2, In Service, indicating that the VNS is operational.
Step 5 Ensure that the active VNS updates standby VNS by entering stbystatus.
Step 6 Verify on standby VNS that the database has been updated and upgraded correctly by using VNS CLI.
To switch over to the standby VNS ( that is the VNS that has just had the new software loaded), follow these steps:
Step 1 After verifying that all database records have been updated and upgraded switch the VNS roles by selecting option 3 from the VNS CLI main menu, "Modify an Entry." (The Modify an Entry submenu will appear.)
Step 2 From the Modify and Entry submenu, select option 12, "More VNS Info and Redundancy Info." (The More VNS Info and Redundancy Info menu appears.)
Step 3 Search through these records until you find the record with the VNS Operation Role of 1 which indicates the unit is the active unit.
Step 4 On that VNS Info and Redundancy Info menu set the Admin Status to 4 (shutdown).
Step 5 Tab down to Enter 'c' to commit changes or 'q' to quit [ ] field. Enter c to commit the record. The VNS process will shut down after the grace period.
Upgrade the software in this VNS, by repeating the steps in the following sections:
|
|