Cisco SPA 400

Maximizing Redundancy in Kubernetes

In the world of modern cloud-native applications, Kubernetes has become the go-to platform for container orchestration. Its ability to manage large-scale deployments, automate operations, and optimize resources is unmatched. However, the true power of Kubernetes lies in its redundancy mechanisms, which ensure that applications remain highly available, even in the face of failures. In this […]

Pacemaker Cheat Sheet

File and Directory Locations LOCATION DESCRIPTION /var/lib/pacemaker/cib/cib.xml Primary cluster configuration file /var/log/cluster/corosync.log Primary cluster log file /usr/lib/ocf/resource.d/heartbeat/ Directory where resource scripts are located Check Cluster Status COMMAND DESCRIPTION pcs cluster status Display status of cluster nodes pcs status –full (double dashes) Display detailed cluster status of nodes and resources pcs resource Display status of all […]

MySQL Master-Master Replication Bug – ERROR 1872

Description: When i tried to configurate a crash safe slave with MTS and GTID based replication, but after a OS crash replication failed to be start. error log: ——————————— 2016-10-26 21:00:23 2699 [Warning] Neither –relay-log nor –relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname […]