MetroCluster Manuals ( CA08871-401 )

Prepare to install the Tiebreaker software

Before you install and configure the Tiebreaker software you should verify that your system meets certain requirements.

You must meet the following software requirements depending on the version of Tiebreaker you are installing.

ONTAP Tiebreaker version	Supported ONTAP versions	Supported Linux versions	Java/MariaDB requirements
1.6	ONTAP 9.12.1 and later	Refer to the OS Support Matrix for details.	None. The dependencies are bundled with the installation.
1.5	ONTAP 9.8 to ONTAP 9.14.1	Red Hat Enterprise Linux 8.1 to 8.7	With Red Hat Enterprise Linux 8.1 to 8.7: MariaDB 10.x (use the default version that is installed using "yum install mariadb-server.x86_64") OpenJDK 17, 18, or 19
1.4	ONTAP 9.7 to ONTAP 9.9.1	Red Hat Enterprise Linux 8.1 to 8.7 Red Hat Enterprise Linux 7 to 7.9 CentOS 7 to 7.9 64-bit	With CentOS: MariaDB 5.5.52.x/MySQL Server 5.6x 4 GB RAM Open JRE 8 With Red Hat Enterprise Linux 8.1 to 8.7: MariaDB 10.x (use the default version that is installed using "yum install mariadb-server.x86_64") JRE 8

ONTAP Tiebreaker version

Supported ONTAP versions

Supported Linux versions

Java/MariaDB requirements

1.6

ONTAP 9.12.1 and later

Refer to the OS Support Matrix for details.

None. The dependencies are bundled with the installation.

1.5

ONTAP 9.8 to ONTAP 9.14.1

With Red Hat Enterprise Linux 8.1 to 8.7:

MariaDB 10.x (use the default version that is installed using "yum install mariadb-server.x86_64")
OpenJDK 17, 18, or 19

1.4

ONTAP 9.7 to ONTAP 9.9.1

With CentOS:

With Red Hat Enterprise Linux 8.1 to 8.7:

MariaDB 10.x (use the default version that is installed using "yum install mariadb-server.x86_64")
JRE 8

You must be aware of the following additional requirements:

The Tiebreaker software is installed on a third site, which allows the software to distinguish between an inter-switch link (ISL) failure (when inter-site links are down) and a site failure. Your host system must meet certain requirements before you can install or upgrade the Tiebreaker software to monitor the MetroCluster configuration.
You must have "root" privileges to install MetroCluster Tiebreaker software and the dependant packages.
You can only use one MetroCluster Tiebreaker monitor per MetroCluster configuration to avoid any conflict with multiple Tiebreaker monitors.
When selecting the Network Time Protocol (NTP) source for the Tiebreaker software, you must use a local NTP source. The Tiebreaker software should not use the same source as the MetroCluster sites that the Tiebreaker software monitors.

Disk capacity: 8 GB
Firewall:
- Direct access for setting up AutoSupport messages
- SSH (port 22/TCP), HTTPS (port 443/TCP), and ping (ICMP)