View all processes of multiple machines

To see hadoop Take the processes on three nodes in the cluster as an example ：

[[email protected] bin]# pwd
/usr/local/wyh/software/hadoop-3.1.3/bin
[[email protected] bin]# cat jps_cluster.sh
#!/bin/bash

for host in hadoop301 hadoop302 hadoop303
do
        echo ----------   $host   ------------
        ssh $host jps
done
[[email protected] bin]# chmod 777 jps_cluster.sh
[[email protected] bin]# jps_cluster.sh
---------- hadoop301 ------------
2817 JobHistoryServer
1685 NameNode
2940 NodeManager
1821 DataNode
3599 Jps
---------- hadoop302 ------------
3668 ResourceManager
4662 Jps
1543 DataNode
3816 NodeManager
---------- hadoop303 ------------
1619 SecondaryNameNode
1543 DataNode
2302 NodeManager
2654 Jps