Linux OpenSSH升级
1、升级准备#
1.1、查看系统版本和ssh版本
cat /etc/*release
ssh -V
1.2、下载软件包
Openssh下载地址
https://openbsd.hk/pub/OpenBSD/OpenSSH/portable/
http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable
Openssl下载地址
https://www.openssl.org/source
https://ftp.openssl.org/source/
wget -P /tmp/ https://openbsd.hk/pub/OpenBSD/OpenSSH/portable/openssh-8.4p1.tar.gz
wget -P /tmp/ https://ftp.openssl.org/source/openssl-1.1.1i.tar.gz
2、编译安装#
安装openssl
[root@my_test tmp]# tar -xzvf openssl-1.1.1i.tar.gz
[root@my_test tmp]# cd /tmp/openssl-1.1.1i
[root@my_test openssl-1.1.1i]# ./config --prefix=/usr/local/ssl -d shared
Operating system: x86_64-whatever-linux2
Configuring OpenSSL version 1.1.1i (0x1010109fL) for linux-x86_64
Using os-specific seed configuration
Creating configdata.pm
Creating Makefile
**********************************************************************
*** ***
*** OpenSSL has been successfully configured ***
*** ***
*** If you encounter a problem while building, please open an ***
*** issue on GitHub <https://github.com/openssl/openssl/issues> ***
*** and include the output from the following command: ***
*** ***
*** perl configdata.pm --dump ***
*** ***
*** (If you are new to OpenSSL, you might want to consult the ***
*** 'Troubleshooting' section in the INSTALL file first) ***
*** ***
**********************************************************************
[root@my_test openssl-1.1.1i]#make&&make install
安装openssh
[root@localhost ~]# tar -xzvf openssh-8.4p1.tar.gz
[root@localhost ~]# cd openssh-8.4p1
[root@my_test openssh-8.4p1]# ./configure --prefix=/usr/local/openssh --sysconfdir=/etc/ssh --with-ssl-dir=/usr/local/ssl
make出现错误
[root@my_test openssh-8.4p1]# make
(cd openbsd-compat && make)
make[1]: Entering directory `/tmp/openssh-8.4p1/openbsd-compat'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/tmp/openssh-8.4p1/openbsd-compat'
不指定ssl重新编译成功。其实我们并不需要升级操作系统的openssl。由于API不同，现在还不支持OpenSSL 1.1.1版本
[root@my_test openssh-8.4p1]# ./configure --prefix=/usr/local/openssh --sysconfdir=/etc/ssh
[root@my_test openssh-8.4p1]# make
[root@my_test openssh-8.4p1]# make install
[root@test3 openssl-1.1.1h]# echo '/usr/local/ssl/lib' >> /etc/ld.so.conf
[root@test3 openssl-1.1.1h]# ldconfig -v
停止原sshd，拷贝sshd的启动文件
[root@my_test openssh-8.4p1]#systemctl stop sshd.service
[root@my_test openssh-8.4p1]#rm -rf /lib/systemd/system/sshd.service
[root@my_test openssh-8.4p1]#systemctl daemon-reload
[root@my_test openssh-8.4p1]# cp /tmp/openssh-8.4p1/contrib/redhat/sshd.init /etc/init.d/sshd
[root@my_test openssh-8.4p1]# ll /etc/init.d/sshd
-rwxr-x--- 1 root root 1721 Dec 14 15:49 /etc/init.d/sshd
启动sshd失败
[root@my_test openssh-8.4p1]# /etc/init.d/sshd restart
Restarting sshd (via systemctl): Warning: sshd.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Job for sshd.service failed because the control process exited with error code. See "systemctl status sshd.service" and "journalctl -xe" for details.
[FAILED]
[root@my_test openssh-8.4p1]# systemctl status sshd.service
● sshd.service - SYSV: OpenSSH server daemon
Loaded: loaded (/etc/rc.d/init.d/sshd; bad; vendor preset: enabled)
Active: failed (Result: exit-code) since Mon 2020-12-14 15:50:09 CST; 11s ago
Docs: man:systemd-sysv-generator(8)
Process: 27942 ExecStart=/etc/rc.d/init.d/sshd start (code=exited, status=1/FAILURE)
Main PID: 864 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/sshd.service
├─ 2147 nginx: worker process
├─ 2148 nginx: worker process
├─ 2149 nginx: worker process
├─ 2150 nginx: worker process
├─ 5978 /home/fastech/hlagent -port=:15380
├─18513 /usr/local/aegis/aegis_update/AliYunDunUpdate
├─18931 /usr/local/aegis/aegis_client/aegis_00_93/AliYunDun
├─18946 /usr/local/aegis/alihids/AliHids
├─19220 /usr/local/aegis/aegis_quartz/aegis_quartz
└─28684 nginx: master process ./nginx
Dec 14 15:50:09 my_test sshd[27942]: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Dec 14 15:50:09 my_test sshd[27942]: Permissions 0640 for '/etc/ssh/ssh_host_ed25519_key' are too open.
Dec 14 15:50:09 my_test sshd[27942]: It is required that your private key files are NOT accessible by others.
Dec 14 15:50:09 my_test sshd[27942]: This private key will be ignored.
Dec 14 15:50:09 my_test sshd[27942]: sshd: no hostkeys available -- exiting.
Dec 14 15:50:09 my_test systemd[1]: sshd.service: control process exited, code=exited status=1
Dec 14 15:50:09 my_test sshd[27942]: [FAILED]
Dec 14 15:50:09 my_test systemd[1]: Failed to start SYSV: OpenSSH server daemon.
Dec 14 15:50:09 my_test systemd[1]: Unit sshd.service entered failed state.
Dec 14 15:50:09 my_test systemd[1]: sshd.service failed.
Warning: sshd.service changed on disk. Run 'systemctl daemon-reload' to reload units.
根据报错提示修改/etc/ssh/ssh_host_ed25519_key权限
[root@my_test openssh-8.4p1]# chmod 0600 /etc/ssh/ssh_host_ed25519_key
[root@my_test openssh-8.4p1]# /etc/init.d/sshd restart
Restarting sshd (via systemctl): Warning: sshd.service changed on disk. Run 'systemctl daemon-reload' to reload units.
[ OK ]
[root@my_test openssh-8.4p1]# systemctl daemon-reload
[root@my_test openssh-8.4p1]# /etc/init.d/sshd restart
Restarting sshd (via systemctl): [ OK ]
[root@my_test openssh-8.4p1]# systemctl status sshd
● sshd.service - SYSV: OpenSSH server daemon
Loaded: loaded (/etc/rc.d/init.d/sshd; bad; vendor preset: enabled)
Active: active (running) since Mon 2020-12-14 15:51:32 CST; 8s ago
Docs: man:systemd-sysv-generator(8)
Process: 28213 ExecStop=/etc/rc.d/init.d/sshd stop (code=exited, status=0/SUCCESS)
Process: 28220 ExecStart=/etc/rc.d/init.d/sshd start (code=exited, status=0/SUCCESS)
Main PID: 28228 (sshd)
CGroup: /system.slice/sshd.service
├─ 2147 nginx: worker process
├─ 2148 nginx: worker process
├─ 2149 nginx: worker process
├─ 2150 nginx: worker process
├─ 5978 /home/fastech/hlagent -port=:15380
├─18513 /usr/local/aegis/aegis_update/AliYunDunUpdate
├─18931 /usr/local/aegis/aegis_client/aegis_00_93/AliYunDun
├─18946 /usr/local/aegis/alihids/AliHids
├─19220 /usr/local/aegis/aegis_quartz/aegis_quartz
├─28228 sshd: /usr/sbin/sshd [listener] 0 of 10-100 startups
└─28684 nginx: master process ./nginx
Dec 14 15:51:32 my_test sshd[28228]: Server listening on 0.0.0.0 port 22.
Dec 14 15:51:32 my_test sshd[28220]: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Dec 14 15:51:32 my_test sshd[28220]: @ WARNING: UNPROTECTED PRIVATE KEY FILE! @
Dec 14 15:51:32 my_test sshd[28220]: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Dec 14 15:51:32 my_test sshd[28220]: Permissions 0640 for '/etc/ssh/ssh_host_ecdsa_key' are too open.
Dec 14 15:51:32 my_test sshd[28220]: It is required that your private key files are NOT accessible by others.
Dec 14 15:51:32 my_test sshd[28220]: This private key will be ignored.
Dec 14 15:51:32 my_test sshd[28228]: Server listening on :: port 22.
Dec 14 15:51:32 my_test systemd[1]: Started SYSV: OpenSSH server daemon.
Dec 14 15:51:32 my_test sshd[28220]: [ OK ]
[root@my_test openssh-8.4p1]#
注册sshd成服务，设置开机启动
[root@my_test system]# chkconfig --add sshd <-------注册sshd服务
[root@my_test system]# chkconfig sshd on
[root@my_test system]# chkconfig --list sshd
Note: This output shows SysV services only and does not include native
systemd services. SysV configuration data might be overridden by native
systemd configuration.
If you want to list systemd services use 'systemctl list-unit-files'.
To see services enabled on particular target use
'systemctl list-dependencies [target]'.
sshd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
[root@my_test system]#systemctl restart sshd
3、为了防止升级失败，可以在升级之前安装telnet服务，通过Telnet连接服务器进行升级#
[root@my_test ~]#yum install telnet-server -y
[root@my_test ~]#systemctl enable telnet.socket
[root@my_test ~]#systemctl start telnet.socket
[root@my_test ~]# netstat -anp |grep :23
tcp6 0 0 :::23 :::* LISTEN 1/systemd
tcp6 0 0 10.158.56.170:23 192.168.10.201:59192 ESTABLISHED 1/systemd
升级完成关闭telnet
[root@my_test ~]#systemctl stop telnet.socket
[root@my_test ~]#systemctl disable telnet.socket
4、相关：#
永远年轻，永远热泪盈眶
