Upgrade external syslog server to Java 11

Java 11 is mandatory for the log collection functionality of your external syslog server. This topic explains how to prepare your syslog server to work with A33.00 by either:

• Option 1: Replacing the server; or,

• Option 2: Upgrading the Java version.

If your syslog server is running CentOS 6, we recommend you use option 1: to replace an existing external syslog server and reassign its IP to a new server.

java -version 2>&1 | egrep -o '[0-9]+\.[0-9]+' | head -n1

Option 1: To replace an existing external syslog in ASMS

If you want to deploy a new external syslog server, do the following steps to maintain the same IP address/hostname as the old server on the new server:

1. Deploy a new external syslog server (see Configure log collection from an external Syslog server) and assign it a temporary IP.

2. Remove the public key of the old syslog server by logging in to the Central Manager as afa user and running this script:

   ssh-keygen -R <original IP of the old syslog server>

3. Assign a different IP address/hostname to the old external syslog server.

4. Assign the original IP of the old server to the new external syslog server.

5. Run Edit-Next (Edit device wizard) on one of the devices that connects to the external syslog server. This can preferably be a small and stable device which will take a short time.

   Important: After running Edit-next, check the list of child devices and remove unwanted devices.
   

6. After verifying that the new syslog is functioning correctly, you can safely delete the old machine.

Option 2: To upgrade your syslog to Java 11

Before proceeding, make sure your syslog server is not already running Java 11.

If your external syslog is running CentOS 7 and Java version is less than 11.

1. Install Java v11.x.y and reload the syslog-ng service.

   Tip: If your machine has internet access you can use yum to install Java 11.

   An example of the available upgrade/package is as follows:

   • sudo yum update

   • sudo yum install java-11-openjdk-devel java-11-openjdk

   • sudo alternatives --config java (change default version)

   If you don't have access to yum, Java v11.x.y can also be downloaded from the Oracle website and installed manually.

2. Run Edit-Next (Edit device wizard) on any device which uses the external syslog server (preferably small and stable device which takes a short time).

If your external syslog is running CentOS 6 and Java version is less than 11 (not recommended)

1. Install Java v11.x.y and reload syslog-ng service. The upgrade package is not available via yum. it can be downloaded from the Oracle website and installed manually .

2. Run Edit-Next (Edit device wizard) on any device which uses the external syslog server (preferably small and stable device which takes a short time).