retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)

1.查看防火牆是否關閉 1）查看防火牆狀態 firewall-cmd --state 2）停止: systemctl stop firewalld start 3）開機禁用 systemctl disablefirewalld

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