This section describes how to configure Meridian to use an existing Cassandra cluster, including how to initialize the Newts keyspace using
newts init with STCS without production-ready tuning, and verify that time series data is stored and can be accessed
It also provides reference documentation for Newts:
Cassandra cluster design, setup, sizing, tuning, and operation are out of scope for this documentation. To install and set up a Cassandra cluster, please follow the Cassandra installation instructions. For further information, see Cassandra Getting Started Guide.
To avoid unwanted updates, disable the Cassandra repository on DNF/YUM-based distributions or use
apt-mark hold cassandra on APT based distributions.
Make sure you have the following:
A running instance of Meridian running on Linux
Working data collection and response time metrics from collectd and pollerd
Cassandra cluster with access to the Cassandra client port
Note that you must make configurations in the
etc directory relative to the Meridian Core home directory.
Depending on your operating system, the home directory is
/usr/share/opennms for Debian/Ubuntu or
/opt/opennms for CentOS/RHEL.