How does data distribution work in Cassandra?
Cassandra uses data partitions to distribute data to each node. Partitions are based on the partition keys. Partition function(partition key)…
How to backup Cassandra database ? 14348 Ratings
Apache Cassandra supports two kinds of backup strategies. A snapshot is a copy of a table’s SSTable files at a…
Troubleshoot Cassandra Read Timeout issue in Linux
Cassandra timeout issue is a complex issue. Today we will review what read timeout mean in Cassandra and how to…
How rp_filter works on Linux?
Rp_filter is short for reverse path filtering on Linux. We can use this to filter packets on Linux. Here are…
Monitor Apache Cassandra with open-source Software
Apache Cassandra cluster is a distributed system. Monitoring this cluster is not an easy task. There are a few monitoring…
How to test NFS performance with dd on Linux?
NFS performance is important for the production environment. In this tutorial, we will review how to use DD command to…
Why CPU utilization is not distributed evenly across all cores in Linux?
A system is having a single core, and if there is a single process consuming all the CPU Time, then…
Monitoring Linux System with Telegraf Influxdb Grafana
Linux monitoring is not an easy task for Linux admins. Luckily we have open-source software to monitor these metrics now.…
What does actimeo mean during NFS mount in Linux? Does this impact storage performance?
actimeo is a common NFS mount option in Linux. actimeo=0 can make a big performance difference in the production environment.…
How to change password for Cassandra
The default password for Cassandra is Cassandra. So we need to change it immediately after we install it. We can…