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總算是把光世代升級到 100M/40M 了...
把本來的 20M/5M 升級到 100M/40M 了，測試可以看到速度算是有達到標準： 透過兩條電話線供裝，可以透過 SmokePing 看出來 latency 高了一點： 抓檔案快多了...
在 Percona XtraDB Cluster 裡使用 async replication 時人工 failover 的方式...
在使用 Galera Cluster 時還是可以架設一般的 slave server (Percona XtraDB Cluster 則是 Percona 對 Galera Cluster 的封裝)，像是這樣的架構： 其中 node{1,2} 為 cluster，node3 則是傳統的 async replication，來源的 master 為 node1。 當 node1 掛掉時，我們沒辦法自動將 node3 的 master 從 node1 改指到 node2，因為 binlog 的位置不一定正確。 在「Changing an async … Continue reading