Centos7.8怎么更新openssh? Centos升级openssh的技巧
<p>给大家分享一下Centos7.8如何更新安装openssh的经验。从版本7.4p1更新到9.4p1</p><p>安装telnet工具。（为了避免在升级的过程中断开）</p>
<div class="jb51code"><pre>#yum -y install telnet*</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093346101.jpg" /></p>
<p>启用telnet服务</p>
<div class="jb51code"><pre>#systemctl enable telnet.socket
#systemctl start telnet.socket</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093346102.jpg" /></p>
<p>关闭或者修改安全配置文件</p>
<p>注：（否则root无法telnet登录）</p>
<div class="jb51code"><pre>#mv /etc/securetty /etc/securetty.bak</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093346103.jpg" /></p>
<p>使用telnet登录系统，准备升级Openssh</p>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093347104.jpg" /></p>
<p>使用xftp工具上传更新包。</p>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093347105.jpg" /></p>
<p>解压缩安装包</p>
<div class="jb51code"><pre>#tar -zxvf openssh-9.4p1.xx</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093347106.jpg" /></p>
<p>切换至安装包目录，执行配置脚本。</p>
<div class="jb51code"><pre># cd openssh-9.4p1-xx
# ./configure --prefix=/usr/local/openssh --with-zlib=/usr/local/zlib --with-ssl-dir=/usr/openssl</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093347107.jpg" /></p>
<p>执行编译并编译安装</p>
<div class="jb51code"><pre># make && make install</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093347108.jpg" /></p>
<p>卸载原系统yum安装的openssh包</p>
<div class="jb51code"><pre># yum remove openssh</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093347109.jpg" /></p>
<p>在/etc目录下面新建ssh目录</p>
<div class="jb51code"><pre># mkdir -p /etc/ssh</pre></div>
<p>拷贝openssh安装目录下的配置文件至/etc/ssh目录下</p>
<div class="jb51code"><pre># cp /usr/local/openssh/etc/* /etc/ssh/</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093348110.jpg" /></p>
<p>编辑sshd_config配置文件</p>
<p>修改如图所示的三个地方，保存退出。</p>
<div class="jb51code"><pre># vi /etc/ssh/sshd_config
#wq</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093348111.jpg" /></p>
<p>复制文件到相应的系统文件夹</p>
<div class="jb51code"><pre># cp /home/manager/openssh-9.4p1/contrib/redhat/sshd.init /etc/init.d/sshd
# cp /usr/local/openssh/sbin/sshd /usr/sbin/sshd
# cp /usr/local/openssh/bin/ssh /usr/bin/ssh
# cp /usr/local/openssh/bin/ssh-keygen /usr/bin/ssh-keygen</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093348112.jpg" /></p>
<p>添加sshd系统启动，并启动sshd服务</p>
<div class="jb51code"><pre># chkconfig --add sshd
# systemctl start sshd.service</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093348113.jpg" /></p>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093348114.jpg" /></p>
<p>查看openssh 运行状态，并添加openssh 开机自启服务。</p>
<p><strong>查看openssh和openssl 版本</strong></p>
<div class="jb51code"><pre># systemctl status sshd.service
# systemctl enable sshd.service
# ssh -V</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093348115.jpg" /></p>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093348116.jpg" /></p>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202309/20230902093348117.jpg" /></p>
<p><span style="color:#c0392b"><strong>注意事项：</strong></span></p>
<p>本步骤操作的前提：已经升级了系统openssl版本，应openssh依赖于openssl的原因，必须先升级openssl</p>
<p>以上就是Centos7.8更新openssh的技巧，希望大家喜欢，请继续关注琼殿技术社区。</p>
頁:
[1]