etcd4 (for PostgreSQL HA)
Add the 4th etcd node to expand your PostgreSQL HA cluster from 3 to 4 nodes.
部署次数2 次
发布者canyugs
创建于2025-11-29
模版内的服务
标签
DatabaseetcdDistributed SystemHigh Availability
etcd4 (4th Node for PostgreSQL HA)
Step 1: Register Node
curl -X POST http://etcd1:2379/v3/cluster/member/add -d '{"peerURLs":["http://etcd4:2380"]}'
Step 2: Deploy & Verify
Deploy this template, then verify:
curl -X POST http://etcd1:2379/v3/cluster/member/list
Step 3: Update Patroni (Recommended)
Update ETCD3_HOSTS in all Patroni services to include the new node:
etcd1:2379,etcd2:2379,etcd3:2379,etcd4:2379