系统命令【二】ssh授信配置

1、服务器说明：

xxx.xxx.xxx.154

xxx.xxx.xxx.155

xxx.xxx.xxx.156

 

2、生成公钥和私钥

xxx.xxx.xxx.154执行：

ssh-keygen -t rsa
cd ~/.ssh
mv id_rsa.pub id_rsa_154.pub
scp id_rsa_154.pub root@xxx.xxx.xxx.155:/root/.ssh
scp id_rsa_154.pub root@xxx.xxx.xxx.156:/root/.ssh

 

xxx.xxx.xxx.155执行：

ssh-keygen -t rsa
cd ~/.ssh
mv id_rsa.pub id_rsa_155.pub
scp id_rsa_155.pub root@xxx.xxx.xxx.154:/root/.ssh
scp id_rsa_155.pub root@xxx.xxx.xxx.156:/root/.ssh

 

xxx.xxx.xxx.156执行：

ssh-keygen -t rsa
cd ~/.ssh
mv id_rsa.pub id_rsa_156.pub
scp id_rsa_156.pub root@xxx.xxx.xxx.154:/root/.ssh
scp id_rsa_156.pub root@xxx.xxx.xxx.155:/root/.ssh

 

3、授信：

在三台设备上同样执行如下操作：

chmod 777 authorized_keys

cat id_rsa_154.pub >> authorized_keys
echo "" >> authorized_keys
cat id_rsa_155.pub >> authorized_keys
echo "" >> authorized_keys
cat id_rsa_156.pub >> authorized_keys
echo "" >> authorized_keys

chmod 600 authorized_keys