2つのGRID間でCross GRID Replicationを設定できません

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環境

StorageGRID 11.7以前

問題

2つのGRID間のCGR（Cross Grid Replication）セットアップが確立できません。グリッドフェデレーション接続を承認できず、両サイトのVIP間でHTTP 500 errorsおよびルーティングが失敗します。

エラーログ
127.0.0.1--[02/Jul/2025:10:01:24+0000] "POST /grid-federation/.../approve HTTP/1.1" 500 65 "-""Faraday v1.1.0"

2025/07/02 10:01:21 [error] connect() failed (113: No route to host) while connecting to upstream...

1.管理ノード - 内部サーバおよび証明書エラー

Jul 2 09:51:22 <Node_Name> NMS: |2025-07-02T09:51:22.474| ERROR Unable to perform a Grid Federation connectivity check from <Source_IP> to <Destination_IP> Jul 2 09:51:22 <Node_Name> NMS: |2025-07-02T09:51:22.474| ERROR Internal server error. The server encountered an error and could not complete your request. Try again. If the problem persists, contact support. Internal Server Error (MgmtApi::LocalizedRuntimeError) ... Jul 2 09:59:30 <Node_Name> NMS: |2025-07-02T09:59:30.327| ERROR Connection test failed for connection <ID> Jul 2 09:59:30 <Node_Name> NMS: |2025-07-02T09:59:30.327| ERROR Validation failed. No certificate exists on the destination grid. You must upload the verification file on the destination grid before you can test the connection. (MgmtApi::LocalizedValidationError)

2.管理ノード - 接続タイムアウトとDNS Issues

2025/07/02 09:53:05 [error] <ID>: *<Node_ID>upstream timed out (110: Connection timed out) while connecting to upstream, client: 127.0.0.1, server: _, request: "DELETE /grid-federation/<ID>/mgmt-api/grid-federation-connections/<ID> HTTP/1.1", upstream: "https://<IP>/grid-federation/<ID>/mgmt-api/grid-federation-connections/<ID>", host: "localhost:9999" ... 2025/07/02 09:53:10 [error] 1623554#1623554: *<Node_ID> [lua] grid_federation_balancer.lua:144: on_balance_phase(): DNS servers cannot resolve this domain name or Nginx cannot connect to any targets, exit while connecting to upstream, client: 127.0.0.1, server: _, request: "DELETE /grid-federation/<ID>/mgmt-api/grid-federation-connections/<ID> HTTP/1.1", upstream: "https://<IP>/grid-federation/<ID>/mgmt-api/grid-federation-connections/<ID>", host: "localhost:9999"

3.ピア管理ノード - 証明書とルーティングエラー

パートナー管理ノードのログには、証明書の不一致とルーティングの問題が表示されます。

2025/07/02 09:50:19 [error] 1129487#1129487: *13309782 upstream SSL certificate does not match "<IP>" while SSL handshaking to upstream, client: 127.0.0.1, server: _, request: "POST /grid-federation/<ID>/mgmt-api/grid-federation-connections/<ID>/approve HTTP/1.1", upstream: "https://<IP>/grid-federation/<ID>/mgmt-api/grid-federation-connections/<ID>/approve", host: "localhost:9999" ... 2025/07/02 10:12:10 [error] 1173090#1173090: *13317988 connect() failed (113: No route to host) while connecting to upstream, client: 127.0.0.1, server: _, request: "POST /grid-federation/<IP>/mgmt-api/grid-federation-connections/<IP>/approve HTTP/1.1", upstream: "https://<IP>/grid-federation/dca8f799-7759-446a-a696-a0e5710740b1/mgmt-api/grid-federation-connections/dca8f799-7759-446a-a696-a0e5710740b1/approve", host: "localhost:9999"