三節點mysql用戶互信方法

三臺機器之間mysql用戶ssh互信配置
切換到以下路徑，執行相關操做
cd /home/mysql/.ssh

(1)在全部的主機上執行：
ssh-keygen -t rsa # 在每臺都須要操做，一路回車,生成一對公私鑰。

(2)節點1執行
ssh-copy-id -i id_rsa.pub mysql@devdb02
ssh-copy-id -i id_rsa.pub mysql@devdb03

(3)節點2執行
ssh-copy-id -i id_rsa.pub mysql@devdb01
ssh-copy-id -i id_rsa.pub mysql@devdb03

(4)節點3執行
ssh-copy-id -i id_rsa.pub mysql@devdb01
ssh-copy-id -i id_rsa.pub mysql@devdb02

#測試(強烈建議)
ssh devdb01
ssh devdb02
ssh devdb03