Ubuntu基础设定:openssh-server的安装和使用介绍

记录一下ubuntu17.10的openssh-server的安装和使用。安装之后就可以使用ssh登陆ubuntu了，所以是ubuntu的基础设定之一。

事前准备

ubuntu版本：17.10
devops@ubuntu:~$ cat /etc/issue
ubuntu 17.10 \n \l
devops@ubuntu:~$ 
devops@ubuntu:~$ lsb_release -a
no lsb modules are available.
distributor id: ubuntu
description:  ubuntu 17.10
release:  17.10
codename:  artful
devops@ubuntu:~$

17.10的ubuntu代号artful aardvark，于2017年10月19日正式发布，是更换gnome的首个版本，但是这不是一个lts版本，会支持到2018年8月，是2018年ubuntu的lts的版本之前的过渡版本。openssh-server的安装基本上对于ubuntu的版本影响非常低，基本操作步骤大体一致。

安装步骤

按照如下安装步骤进行安装

操作日志

此处再以安装的状态下抓取的日志，apt install显示会有所不同

devops@ubuntu:~$ sudo su
[sudo] password for devops: 
root@ubuntu:/home/devops# 
root@ubuntu:/home/devops# apt install openssh-server
reading package lists... done
building dependency tree    
reading state information... done
openssh-server is already the newest version (1:7.5p1-10ubuntu0.1).
0 upgraded, 0 newly installed, 0 to remove and 55 not upgraded.
root@ubuntu:/home/devops# 
root@ubuntu:/home/devops# ssh -v
openssh_7.5p1 ubuntu-10ubuntu0.1, openssl 1.0.2g 1 mar 2016
root@ubuntu:/home/devops# 
root@ubuntu:/home/devops# /etc/init.d/ssh status
● ssh.service - openbsd secure shell server
  loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
  active: active (running) since sat 2018-03-03 07:58:44 cst; 51min ago
 process: 3072 execreload=/bin/kill -hup $mainpid (code=exited, status=0/success)
 process: 3071 execreload=/usr/sbin/sshd -t (code=exited, status=0/success)
 process: 3167 execstartpre=/usr/sbin/sshd -t (code=exited, status=0/success)
 main pid: 3179 (sshd)
  tasks: 1 (limit: 4915)
  memory: 1.0m
   cpu: 7ms
  cgroup: /system.slice/ssh.service
      └─3179 /usr/sbin/sshd -d
mar 03 07:58:44 ubuntu systemd[1]: starting openbsd secure shell server...
mar 03 07:58:44 ubuntu systemd[1]: started openbsd secure shell server.
mar 03 07:58:44 ubuntu sshd[3179]: server listening on 0.0.0.0 port 22.
mar 03 07:58:44 ubuntu sshd[3179]: server listening on :: port 22.
root@ubuntu:/home/devops# 
root@ubuntu:/home/devops# /etc/init.d/ssh restart
[ ok ] restarting ssh (via systemctl): ssh.service.
root@ubuntu:/home/devops#

从终端进行ssh连接

liumiaocn:~ liumiao$ ssh devops@192.168.31.19
devops@192.168.31.19's password: 
welcome to ubuntu 17.10 (gnu/linux 4.13.0-21-generic x86_64)
 * documentation: https://help.ubuntu.com
 * management:   https://landscape.canonical.com
 * support:    https://ubuntu.com/advantage
58 packages can be updated.
32 updates are security updates.
last login: sat mar 3 07:43:23 2018 from 192.168.31.242
devops@ubuntu:~$

总结

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