centos 7 红帽认证 sshd服务搭建

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我是靠谱客的博主体贴板栗，最近开发中收集的这篇文章主要介绍centos 7 红帽认证 sshd服务搭建，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

一、检测和安装sshd服务
1、检测是否安装
[root@localhost ~]#rpm -qa | grep opensshd
（1）未安装（几乎所有机器都是安装了的）
[root@localhost ~]# rpm -qa |grep opensshd
[root@localhost ~]#

（2）进行选择安装
[root@localhost ~]# find /mnt/cdrom/Packages -name “openssh*”
/mnt/cdrom/Packages/openssh-6.6.1p1-22.el7.i686.rpm
/mnt/cdrom/Packages/openssh-askpass-6.6.1p1-22.el7.i686.rpm
/mnt/cdrom/Packages/openssh-clients-6.6.1p1-22.el7.i686.rpm
/mnt/cdrom/Packages/openssh-keycat-6.6.1p1-22.el7.i686.rpm
/mnt/cdrom/Packages/openssh-server-6.6.1p1-22.el7.i686.rpm
[root@localhost ~]# rpm -ivh [你要安装的包]

（3）已安装
2、本地相关设置
（1）启动服务
[root@localhost ~]# service openssh start
Redirecting to /bin/systemctl start openssh.service
Failed to start openssh.service: Unit openssh.service failed to load: No such file or directory.
[root@localhost ~]# systemctl start ssh.service
Failed to start ssh.service: Unit ssh.service failed to load: No such file or directory.
（2）进行本地设置
[root@localhost ~]# ssh 127.0.0.1
root@127.0.0.1’s password:
Last login: Thu May 5 06:33:51 2016 from 10.11.24.18
[root@localhost ~]#

二、配置相关服务
1、密钥产生
[root@localhost ~]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): SSH_MY
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in SSH_MY.
Your public key has been saved in SSH_MY.pub.
The key fingerprint is:
…………………………..
…………………………..
…………………………..
2、公钥分配

# scp SSH_MY.pub root@[目标机ip]:~/.ssh

3、连接目标机
[root@localhost .ssh]# ssh root@[目标机ip]
4、改写目标机的authorized_keys文件（追加在其后）
[root@localhost .ssh]# cat SSH_MY.pub >> authorized_keys
5、退出目标机
[root@localhost .ssh]# logout
6、登录目标机
[root@localhost .ssh]# ssh -i SSH_MY root@[目标机ip]