Unassigned shards in Elasticsearch 7 and 8
There are multiple reasons why shards might get unassigned, ranging from misconfigured allocation settings to lack of disk space.
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Percona XtraDB Multi-Master Replication cluster setup between 3 nodes
This guide describes the steps to establish a Percona XtraDB Cluster v8.0 among three Ubuntu 22.04 nodes.
Site-to-Site VPN between Mikrotik router and Ubuntu 22.04 through strongSwan using IPsec IKEv2
We will configure a site-to-site IPsec IKEv2 tunnel between the Mikrotik Router and the StrongSwan server. This will enable secure communication between devi...
Monitor HA Cluster running Pacemaker and Corosync using Prometheus and Grafana using Docker
We will use Grafana with prometheus in container to monitor High availability cluster running by Pacemaker and Corosync.
GFS2 Filesystem setup in RHEL8 with Pacemaker and Corosync
We will configure Pacemaker/Corosync to enable the sharing of a disk between two nodes through the GFS2 clustered filesystem.
SAML Authentication for AWS OpenSearch with Okta and Role mapping
We are going to set up IdP-initiated (Okta) SAML authentication for AWS OpenSearch. We will create two Okta groups: “opensearch-admin” and “opensearch-user,”...
Ansible Lab Environment setup in Docker container
For ansible lab environment setup, first I will generate ssh key for non-root user and then create a Dockerfile to build a docker image. After that, we will ...
Add and remove nodes in your Elasticsearch Cluster
I will be adding a new node elk-04 in the existing 3 nodes Elasticsearch cluster and again remove it later.