fix(postgres): 放宽跨地域 WAL 连接抖动窗口

将生产 WAL sender/receiver timeout 从 CNPG 隐式 5 秒显式调整为 30 秒，避免短时控制面或 Pod 网络停顿反复拆除复制流并触发异步降级。保留 preferred 同步策略，防止副本不可达时冻结全部写入。\n\n影响：仅修改生产 CNPG 参数、发布门禁和运维说明，不改变应用镜像和迁移。仍需通过同步复制、六向链路与验收硬门禁。\n\n验证：kubectl kustomize、bash -n、ShellCheck、manual-release-test。
2026-08-02 00:10:25 +08:00
parent a4046c2b81
commit ac8d6dcf45
3 changed files with 10 additions and 1 deletions
@@ -128,6 +128,13 @@ spec:
      shared_buffers: 512MB
      wal_compression: "on"
      wal_keep_size: 1GB
+      # CNPG defaults these cross-region liveness timers to 5 seconds. A short
+      # control-plane or pod-network stall can otherwise tear down a healthy
+      # WAL stream and make preferred synchronous replication fall back to
+      # async. Keep failure detection bounded without amplifying a transient
+      # multi-second stall into repeated reconnects.
+      wal_sender_timeout: 30s
+      wal_receiver_timeout: 30s
  monitoring:
    enablePodMonitor: false
  projectedVolumeTemplate: