今天使用rsync工具实现远程同步，报错了，记得以前也出现过这样的情况，居然忘记怎么解决了，查了一下资料，在这里做个记录，以免下次又忘记还要到处找解决方法：
[root@xin-m src]# rsync -avzP root@192.168.244.105:/usr/local/src/ .
rsync: Failed to exec ssh: No such file or directory (2)
rsync error: error in IPC code (code 14) at pipe.c(84) [receiver=3.0.6]
rsync: connection unexpectedly closed (0 bytes received so far) [receiver]
rsync error: error in rsync protocol data stream (code 12) at io.c(600) [receiver=3.0.6]
解决方法如下：
yum install openssh-clients
