Environment Architecture The deployment involves a primary cluster operating in an active-passive configuration and a two-node physical standby cluster. The primary database instances reside on prod-node1 (active) and prod-node2 (passive). The standby instances are hosted on std-node1 and std-node2....
Overview Keepalived is an open-source software solution designed to provide high availability and load balancing for Linux-based systems. The application monitors services and servers, automatically failing over when primary resources become unavailable. This capability ensures continuous service de...
Keepalived Overview Keepalived is a routing software written in C that provides load balancing and high availability capabilities for Linux systems and Linux-based infrastructures. The software achieves two primary functions: Load Balancing - Distributes network traffic across multiple servers High...
Cluster Architecture & Network Topology Host Role Operating System Specifications IP Address Control Plane Node 1 CentOS 7.9 4 vCPU / 8 GB RAM / 200 GB 192.168.1.201 Control Plane Node 2 CentOS 7.9 4 vCPU / 8 GB RAM / 200 GB 192.168.1.203 Control Plane Node 3 CentOS 7.9 4 vCPU / 8 GB RAM / 200 G...
vrrp_script provides health/eligibility probes that can adjust a VRRP instance’s priority at runtime. By returning a non‑zero exit code, the script can penalize priority via weight, making the local node less likely to be elected master. track_script links these checks to a specific vrrp_instance. n...