1：以 root为例
[root@shell deploy]# ssh-keygen
直接回车到底
通过ssh-cpoy-id自带脚本来拷贝公钥到客户机
命令格式：
[root@shell ~]# ssh-copy-id
Usage: /usr/bin/ssh-copy-id [-i [identity_file]] [user@]machine
[root@shell ~]# ssh-copy-id -i root@192.168.16.238
Address 192.168.16.238 maps to localhost, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
root@192.168.16.238's password:
Now try logging into the machine, with "ssh 'root@192.168.16.238'", and check in:
.ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting.
注意：客户机不需要进行任何操作，不需要建立.ssh目录
[root@shell ~]# sh -x ssh_ip.sh 238
+ ssh -p22 192.168.16.238
Address 192.168.16.238 maps to localhost, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Last login: Mon Jun 8 17:13:33 2015 from 192.168.16.239
[root@oracle10g ~]#
我们发现ssh信任已经建立完成
在客户机查看java进程：
[root@oracle10g ~]# ps aux|grep java|grep -v grep
root 21215 0.3 2.0 3342860 76500 ? Sl 17:06 0:02 /usr/bin/java -Djava.util.logging.config.file=/opt/apache-tomcat-6.0.35/conf/logging.properties -server -Xms1048m -Xmx1048m -XX:NewRatio=2 -XX:PermSize=256M -XX:MaxPermSize=512M -XX:+HeapDumpOnOutOfMemoryError -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=16689 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.awt.headless=true -DmqEnable=0 -Deis.run.subsystem=eis_basedata -Deis.import.start=flase -Deis.update.grade.name=true -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/apache-tomcat-6.0.35/endorsed -classpath /opt/apache-tomcat-6.0.35/bin/bootstrap.jar -Dcatalina.base=/opt/apache-tomcat-6.0.35 -Dcatalina.home=/opt/apache-tomcat-6.0.35 -Djava.io.tmpdir=/opt/apache-tomcat-6.0.35/temp org.apache.catalina.startup.Bootstrap start
pkill -9 java
在服务机执行：./ssh_ip.sh 238 "servie tomcat start" 或者ssh -t -p 22 192.168.16.238 "/etc/init.d/tomcat start"
2:分别在客户机和主机创建test1用户
useradd test1
echo "123456" |passwd test1 --statin