centos7 升级openssh到openssh-8.0p1版本

环境介绍


 

centos7.3和centos7.6升级完毕测试登录ssh以及重启后登录ssh均无问题。

前期请自行配置好yum源(如果不会请百度)

整个过程不需要卸载原先的openssl包和openssh的rpm包。不影响我们的操作

本文的环境都是系统自带的openssh,没有经历过手动编译安装方式。如果之前有手动编译安装过openssh,请参照本文自行测试是否能成功。

如果严格参照本文操作,我保证你升级没问题

 

centos7.6升级后的效果

[root@testssh ~]# ssh -V
OpenSSH_8.0p1, OpenSSL 1.0.2r  26 Feb 2019
[root@testssh ~]# openssl version
OpenSSL 1.0.2r  26 Feb 2019

[root@testssh ~]# cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core) 
[root@testssh ~]# 

  

centos7.3升级后的效果

[root@linux-node3 ~]# openssl version
OpenSSL 1.0.2r  26 Feb 2019
[root@linux-node3 ~]# ssh -V
OpenSSH_8.0p1, OpenSSL 1.0.2r  26 Feb 2019
[root@linux-node3 ~]# cat /etc/redhat-release 
CentOS Linux release 7.3.1611 (Core) 
[root@linux-node3 ~]# 

  

如果ssh版本过低,最好先yum update openssh升级下到目前yum仓库默认的openssh7.4p1版本

默认centos7.3的ssh是如下版本

[root@linux-node3 ~]# cat /etc/redhat-release 
CentOS Linux release 7.3.1611 (Core) 
[root@linux-node3 ~]# ssh -V
OpenSSH_6.6.1p1, OpenSSL 1.0.1e-fips 11 Feb 2013
[root@linux-node3 ~]# 

  

执行yum update  openssh先升级下(反正官方提供的这种升级是没问题的。如果之前手动编译操作过openssh的升级,变更了默认配置文件路径什么的请自行测试。)

(这里准备统一openssh版本为7.4p1之后再统一编译安装升级到openssh8.0p1)

[root@linux-node3 ~]# yum update openssh -y

[root@linux-node3 ~]# ssh -V
OpenSSH_7.4p1, OpenSSL 1.0.2k-fips  26 Jan 2017
[root@linux-node3 ~]# 

 

安装telnet-server以及xinetd

[root@linux-node3 ~]# yum install xinetd telnet-server -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.163.com
 * epel: mirrors.aliyun.com
 * extras: mirrors.cn99.com
 * updates: mirrors.cn99.com
Package 2:xinetd-2.3.15-13.el7.x86_64 already installed and latest version
Package 1:telnet-server-0.17-64.el7.x86_64 already installed and latest version
Nothing to do
[root@linux-node3 ~]# 

  

 

配置telnet


 

现在很多centos7版本安装telnet-server以及xinetd之后没有一个叫telnet的配置文件了。

如果下面telnet文件不存在的话,可以跳过这部分的更改

[root@linux-node3 ~]# ll /etc/xinetd.d/telnet
ls: cannot access /etc/xinetd.d/telnet: No such file or directory

  

如果下面文件存在,请更改配置telnet可以root登录,把disable = no改成disable = yes

[root@rhel yum.repos.d]# cat /etc/xinetd.d/telnet
# default: on
# description: The telnet server serves telnet sessions; it uses \
#	unencrypted username/password pairs for authentication.
service telnet
{
	disable	= no
	flags		= REUSE
	socket_type	= stream        
	wait		= no
	user		= root
	server		= /usr/sbin/in.telnetd
	log_on_failure	+= USERID
}

[root@rhel yum.repos.d]# vim /etc/xinetd.d/telnet
[root@rhel yum.repos.d]# cat /etc/xinetd.d/telnet
# default: on
# description: The telnet server serves telnet sessions; it uses \
#	unencrypted username/password pairs for authentication.
service telnet
{
	disable	= yes
	flags		= REUSE
	socket_type	= stream        
	wait		= no
	user		= root
	server		= /usr/sbin/in.telnetd
	log_on_failure	+= USERID
}

  

配置telnet登录的终端类型,在/etc/securetty文件末尾增加一些pts终端,如下

pts/0
pts/1
pts/2
pts/3

 

配置之后的显示

[root@linux-node3 ~]# vim /etc/securetty
[root@linux-node3 ~]# tail -5 /etc/securetty
xvc0
pts/0
pts/1
pts/2
pts/3
[root@linux-node3 ~]# 

  

启动telnet服务,并设置开机自动启动

[root@linux-node3 ~]# systemctl enable xinetd
 
[root@linux-node3 ~]# systemctl enable telnet.socket 
Created symlink from /etc/systemd/system/sockets.target.wants/telnet.socket to /usr/lib/systemd/system/telnet.socket.
[root@linux-node3 ~]# 

[root@linux-node3 ~]# systemctl start telnet.socket
[root@linux-node3 ~]# systemctl start xinetd
[root@linux-node3 ~]# netstat -lntp|grep 23
tcp6       0      0 :::23                   :::*                    LISTEN      1/systemd           
[root@linux-node3 ~]# 

  

切换到telnet方式登录,以后的操作都在telnet终端下操作,防止ssh连接意外中断造成升级失败

telnet方式登录 

 

 安装依赖包


 

 升级需要几个组件,有些是和编译相关的等

[root@linux-node3 ~]# yum install  -y gcc gcc-c++ glibc make autoconf openssl openssl-devel pcre-devel  pam-devel
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.163.com
 * epel: mirrors.aliyun.com
 * extras: mirrors.cn99.com
 * updates: mirrors.cn99.com
Package gcc-4.8.5-36.el7_6.1.x86_64 already installed and latest version
Package gcc-c++-4.8.5-36.el7_6.1.x86_64 already installed and latest version
Package glibc-2.17-260.el7_6.4.x86_64 already installed and latest version
Package 1:make-3.82-23.el7.x86_64 already installed and latest version
Package autoconf-2.69-11.el7.noarch already installed and latest version
Package 1:openssl-1.0.2k-16.el7_6.1.x86_64 already installed and latest version
Package 1:openssl-devel-1.0.2k-16.el7_6.1.x86_64 already installed and latest version
Package pcre-devel-8.32-17.el7.x86_64 already installed and latest version
Package pam-devel-1.1.8-22.el7.x86_64 already installed and latest version
Nothing to do
[root@linux-node3 ~]# 

  

 安装pam和zlib等(后面的升级操作可能没用到pam,安装上也没啥影响,如果不想安装pam请自行测试)

[root@linux-node3 ~]# yum install  -y pam* zlib*
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.163.com
 * epel: mirrors.aliyun.com
 * extras: mirrors.cn99.com
 * updates: mirrors.cn99.com
Package pam_yubico-2.26-1.el7.x86_64 already installed and latest version
Package pam_script-1.1.8-1.el7.x86_64 already installed and latest version
Package pam_oath-2.4.1-9.el7.x86_64 already installed and latest version
Package pam_snapper-0.2.8-4.el7.x86_64 already installed and latest version
Package pam_ssh_agent_auth-0.10.3-2.16.el7.x86_64 already installed and latest version
Package pam_2fa-1.0-1.el7.x86_64 already installed and latest version
Package pam_mapi-0.3.4-1.el7.x86_64 already installed and latest version
Package pam_ssh_user_auth-1.0-1.el7.x86_64 already installed and latest version
Package pam_mount-2.16-5.el7.x86_64 already installed and latest version
Package pam_radius-1.4.0-3.el7.x86_64 already installed and latest version
Package pamtester-0.1.2-4.el7.x86_64 already installed and latest version
Package pam_afs_session-2.6-5.el7.x86_64 already installed and latest version
Package pam_pkcs11-0.6.2-30.el7.x86_64 already installed and latest version
Package pam-1.1.8-22.el7.x86_64 already installed and latest version
Package pam_ssh-2.3-1.el7.x86_64 already installed and latest version
Package 1:pam_url-0.3.3-4.el7.x86_64 already installed and latest version
Package pam_wrapper-1.0.7-2.el7.x86_64 already installed and latest version
Package pam-kwallet-5.5.2-1.el7.x86_64 already installed and latest version
Package pam-devel-1.1.8-22.el7.x86_64 already installed and latest version
Package pam_krb5-2.4.8-6.el7.x86_64 already installed and latest version
Package zlib-devel-1.2.7-18.el7.x86_64 already installed and latest version
Package zlib-static-1.2.7-18.el7.x86_64 already installed and latest version
Package zlib-1.2.7-18.el7.x86_64 already installed and latest version
Package zlib-ada-1.4-0.5.20120830CVS.el7.x86_64 already installed and latest version
Package zlib-ada-devel-1.4-0.5.20120830CVS.el7.x86_64 already installed and latest version
Nothing to do
[root@linux-node3 ~]#

  

下载openssh包和openssl的包


 我们都下载最新版本,下载箭头指的包

https://openbsd.hk/pub/OpenBSD/OpenSSH/portable/

 

 

https://ftp.openssl.org/source/

 

 

 

 

 

 开始安装openssl


 

个人习惯把安装包或者工具之类的放下面目录。根据个人喜好随便放,不影响安装

[root@linux-node3 ~]# mkdir /data/tools -p
[root@linux-node3 ~]# cd /data/tools/
[root@linux-node3 /data/tools]# rz -E
rz waiting to receive.
[root@linux-node3 /data/tools]# ll
total 5224
-rw-r--r-- 1 root root 5348369 Apr 27 12:19 openssl-1.0.2r.tar.gz



解压文件
[root@linux-node3 /data/tools]# tar xfz openssl-1.0.2r.tar.gz
[root@linux-node3 /data/tools]# ll
total 5228
drwxr-xr-x 20 root root    4096 Apr 27 12:20 openssl-1.0.2r
-rw-r--r--  1 root root 5348369 Apr 27 12:19 openssl-1.0.2r.tar.gz
[root@linux-node3 /data/tools]# cd
[root@linux-node3 ~]# 


现在是系统默认的版本,等会升级完毕对比下
[root@linux-node3 ~]# openssl version
OpenSSL 1.0.2k-fips  26 Jan 2017
[root@linux-node3 ~]# 

  

  

 备份下面2个文件或目录(如果存在的话就执行)

[root@linux-node3 ~]# ll /usr/bin/openssl 
-rwxr-xr-x 1 root root 555248 Mar 12 18:12 /usr/bin/openssl
[root@linux-node3 ~]# mv /usr/bin/openssl /usr/bin/openssl_bak

[root@linux-node3 ~]# ll /usr/include/openssl
total 1864
-rw-r--r-- 1 root root   6146 Mar 12 18:12 aes.h
-rw-r--r-- 1 root root  63204 Mar 12 18:12 asn1.h
-rw-r--r-- 1 root root  24435 Mar 12 18:12 asn1_mac.h
-rw-r--r-- 1 root root  34475 Mar 12 18:12 asn1t.h
-rw-r--r-- 1 root root  38742 Mar 12 18:12 bio.h
-rw-r--r-- 1 root root   5351 Mar 12 18:12 blowfish.h
......

[root@linux-node3 ~]# mv /usr/include/openssl /usr/include/openssl_bak
[root@linux-node3 ~]# 

  

  

编译安装新版本的openssl

配置、编译、安装3个命令一起执行

&&符号表示前面的执行成功才会执行后面的

[root@linux-node3 ~]# cd /data/tools/openssl-1.0.2r/

[root@linux-node3 /data/tools/openssl-1.0.2r]# ./config shared && make && make install

  

以上命令执行完毕,echo $?查看下最后的make install是否有报错,0表示没有问题

 

 

 下面2个文件或者目录做软链接 (刚才前面的步骤mv备份过原来的)

[root@linux-node3 ~]# ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl
[root@linux-node3 ~]# ln -s /usr/local/ssl/include/openssl /usr/include/openssl
[root@linux-node3 ~]# ll /usr/bin/openssl
lrwxrwxrwx 1 root root 26 Apr 27 12:31 /usr/bin/openssl -> /usr/local/ssl/bin/openssl
[root@linux-node3 ~]# ll /usr/include/openssl -ld
lrwxrwxrwx 1 root root 30 Apr 27 12:31 /usr/include/openssl -> /usr/local/ssl/include/openssl
[root@linux-node3 ~]# 

  

命令行执行下面2个命令加载新配置

echo "/usr/local/ssl/lib" >> /etc/ld.so.conf

/sbin/ldconfig

  

 查看确认版本。没问题

[root@testssh ~]# openssl version
OpenSSL 1.0.2r  26 Feb 2019

  

 

 安装openssh 


 

上传openssh的tar包并解压

[root@testssh ~]# cd /data/tools/
[root@testssh tools]# ll
total 7628
-rw-r--r--  1 root root 1597697 Apr 18 07:02 openssh-8.0p1.tar.gz
drwxr-xr-x 20 root root    4096 Apr 23 23:12 openssl-1.0.2r
-rw-r--r--  1 root root 5348369 Feb 26 22:34 openssl-1.0.2r.tar.gz
-rwxr-xr-x  1 root root  853040 Apr 11  2018 sshd
[root@testssh tools]# tar xfz openssh-8.0p1.tar.gz 
[root@testssh tools]# cd openssh-8.0p1


可能文件默认显示uid和gid数组都是1000,这里重新授权下。不授权可能也不影响安装(请自行测试)
[root@testssh tools]# chown -R root.root /data/tools/openssh-8.0p1

  

 

  

 命令行删除原先ssh的配置文件和目录

然后配置、编译、安装

注意下面编译安装的命令是一行,请把第一行末尾的 \ 去掉,然后在文本里弄成一行之后放命令行执行

rm -rf /etc/ssh/*

./configure --prefix=/usr/ --sysconfdir=/etc/ssh  --with-openssl-includes=/usr/local/ssl/include \
 --with-ssl-dir=/usr/local/ssl   --with-zlib   --with-md5-passwords   --with-pam  && make && make install

  

 

 参考下我的截图

 

 安装完毕 检查下结果

 

 修改配置文件最终为如下内容,其他的不要动

[root@linux-node3 ~]# grep "^PermitRootLogin"  /etc/ssh/sshd_config
PermitRootLogin yes
[root@linux-node3 ~]# grep  "UseDNS"  /etc/ssh/sshd_config
UseDNS no
[root@linux-node3 ~]# 

  

 从原先的解压的包中拷贝一些文件到目标位置(如果目标目录存在就覆盖)

(可能下面的ssh.pam文件都没用到,因为sshd_config配置文件貌似没使用它,请自行测试。我这边是拷贝了)

[root@linux-node3 /data/tools/openssh-8.0p1]# cp -a contrib/redhat/sshd.init /etc/init.d/sshd
[root@linux-node3 /data/tools/openssh-8.0p1]# cp -a contrib/redhat/sshd.pam /etc/pam.d/sshd.pam
[root@linux-node3 /data/tools/openssh-8.0p1]# chmod +x /etc/init.d/sshd

[root@linux-node3 /data/tools/openssh-8.0p1]# chkconfig --add sshd
[root@linux-node3 /data/tools/openssh-8.0p1]# systemctl enable sshd
[root@linux-node3 /data/tools/openssh-8.0p1]# 

  

 把原先的systemd管理的sshd文件删除或者移走或者删除,不移走的话影响我们重启sshd服务

 

[root@linux-node3 ~]# mv  /usr/lib/systemd/system/sshd.service  /data/

  

设置sshd服务开机启动

[root@linux-node3 ~]# chkconfig sshd on
Note: Forwarding request to 'systemctl enable sshd.socket'.
Created symlink from /etc/systemd/system/sockets.target.wants/sshd.socket to /usr/lib/systemd/system/sshd.socket.

  

 接下来测试启停服务。都正常

以后管理sshd通过下面方式了
[root@linux-node3 ~]# /etc/init.d/sshd restart
Restarting sshd (via systemctl):                           [  OK  ]
[root@linux-node3 ~]# 
[root@linux-node3 ~]# 
[root@linux-node3 ~]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      31800/sshd          
tcp6       0      0 :::22                   :::*                    LISTEN      31800/sshd          
tcp6       0      0 :::23                   :::*                    LISTEN      1/systemd           
[root@linux-node3 ~]# /etc/init.d/sshd stop
Stopping sshd (via systemctl):                             [  OK  ]
[root@linux-node3 ~]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp6       0      0 :::23                   :::*                    LISTEN      1/systemd           
[root@linux-node3 ~]# /etc/init.d/sshd start
Starting sshd (via systemctl):                            [  OK  ]
[root@linux-node3 ~]# 
[root@linux-node3 ~]# 

  

 使用systemd方式也行

 

[root@linux-node3 ~]# systemctl stop sshd
[root@linux-node3 ~]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp6       0      0 :::23                   :::*                    LISTEN      1/systemd           
[root@linux-node3 ~]# systemctl start sshd
[root@linux-node3 ~]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      31958/sshd          
tcp6       0      0 :::22                   :::*                    LISTEN      31958/sshd          
tcp6       0      0 :::23                   :::*                    LISTEN      1/systemd           
[root@linux-node3 ~]# systemctl restart sshd
[root@linux-node3 ~]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      31999/sshd          
tcp6       0      0 :::22                   :::*                    LISTEN      31999/sshd          
tcp6       0      0 :::23                   :::*                    LISTEN      1/systemd           
[root@linux-node3 ~]# 

  

 测试版本。都正常

[root@linux-node3 ~]# ssh -V
OpenSSH_8.0p1, OpenSSL 1.0.2r  26 Feb 2019
[root@linux-node3 ~]# 

[root@linux-node3 ~]# telnet 127.0.0.1 22
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
SSH-2.0-OpenSSH_8.0

  

 如果不是生产机器。可以试着重启机器测试下登录sshd是否正常。我这边测试都没问题

测试没问题后可以把telnet服务关闭了

[root@linux-node3 ~]# systemctl disable xinetd.service 
Removed symlink /etc/systemd/system/multi-user.target.wants/xinetd.service.
[root@linux-node3 ~]# systemctl stop xinetd.service 
[root@linux-node3 ~]# systemctl disable telnet.socket 
[root@linux-node3 ~]# systemctl stop telnet.socket 
[root@linux-node3 ~]# netstat -lntp

  

 

下面有一个神奇的二维码,扫一下您可能失去2元钱!


 

 

 

 

 

posted on 2019-04-27 19:55  nmap  阅读(108279)  评论(35编辑  收藏  举报

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