Interaction

example of interactions between a meta node & a common node

Here’s an example of interactions between a meta node & a common node.

Interaction - 图1

The interaction between the meta node and common nodes are:

  • Database cluster/node domain name resolved by Nameserver on meta node. (optional)
  • Database node software installation will use Yum Repo on meta.
  • Prometheus collects database cluster/node monitoring metrics on meta.
  • Database logs are collected by Promtail and sent to Loki.
  • Pigsty will control database nodes from the meta node:
    • Cluster creation, scale in / scale out, instance/cluster recycling
    • Creating business users & databases, modifying services routes & HBA rules.
    • Log collection, vacuum analyze, backup, and other routine tasks, etc.
  • Node’s Consul will sync locally registered services to the DCS Servers.
  • The database node will synchronize time from the meta node (or other NTP server).

Last modified 2022-06-04: fii en docs batch 2 (61bf601)