docker容器无法远程登陆

我通过xshell，ssh或者telnet连接容器，都是在报错

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经过查询发现，原来是容器没有安装openssh服务，openssh服务是负责ssh登录的，一坑接一坑

现在镜像有了，天下我有，安装openssh即可

查询需要看装的服务

yum search openssh

返回

Last metadata expiration check: 0:06:51 ago on Wed Apr 26 07:53:29 2023.
====================================================================================================== Name Exactly Matched: openssh =======================================================================================================
openssh.x86_64 : An open source implementation of SSH protocol version 2
===================================================================================================== Name & Summary Matched: openssh ======================================================================================================
openssh-keycat.x86_64 : A mls keycat backend for openssh
========================================================================================================== Name Matched: openssh ===========================================================================================================
openssh-cavs.x86_64 : CAVS tests for FIPS validation
openssh-clients.x86_64 : An open source SSH client applications
openssh-ldap.x86_64 : A LDAP support for open source SSH server daemon
openssh-server.x86_64 : An open source SSH server daemon

经查询只需要安装openssh-clients跟openssh-server就行

安装

yum install openssh-clients -y

yum install openssh-server -y

安装完毕后，还需要启动服务

systemctl restart sshd

查看是否启动成功

systemctl status sshd

返回

● sshd.service - OpenSSH server daemon
   Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2023-04-26 08:03:29 UTC; 2s ago
     Docs: man:sshd(8)
           man:sshd_config(5)
 Main PID: 192 (sshd)
    Tasks: 1 (limit: 50160)
   Memory: 1.1M
   CGroup: /docker/f02d6a292ddd12aba34c1090569bbb2e32c18e39dbc919d50969648193750ef8/system.slice/sshd.service
           └─192 /usr/sbin/sshd -D -oCiphers=aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes256-ctr,aes256-cbc,aes128-gcm@openssh.com,aes128-ctr,aes128-cbc -oMACs=hmac-sha2-256-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-12>

Apr 26 08:03:29 f02d6a292ddd systemd[1]: sshd.service: Changed dead -> start
Apr 26 08:03:29 f02d6a292ddd systemd[1]: Starting OpenSSH server daemon...
Apr 26 08:03:29 f02d6a292ddd systemd[192]: sshd.service: Executing: /usr/sbin/sshd -D -oCiphers=aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes256-ctr,aes256-cbc,aes128-gcm@openssh.com,aes128-ctr,aes128-cbc -oMACs=hmac-sha2-25>
Apr 26 08:03:29 f02d6a292ddd sshd[192]: Server listening on 0.0.0.0 port 22.
Apr 26 08:03:29 f02d6a292ddd sshd[192]: Server listening on :: port 22.
Apr 26 08:03:29 f02d6a292ddd systemd[1]: sshd.service: Got notification message from PID 192 (READY=1)
Apr 26 08:03:29 f02d6a292ddd systemd[1]: sshd.service: Changed start -> running
Apr 26 08:03:29 f02d6a292ddd systemd[1]: sshd.service: Job sshd.service/start finished, result=done
Apr 26 08:03:29 f02d6a292ddd systemd[1]: Started OpenSSH server daemon.
Apr 26 08:03:29 f02d6a292ddd systemd[1]: sshd.service: Failed to send unit change signal for sshd.service: Connection reset by peer

telnet检测一下

telnet 10.10.20.198 2229

返回

Connecting to 10.10.20.198:2229...
Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.
SSH-2.0-OpenSSH_8.0

说明端口可以连接

ssh远程登陆

但是让我输入密码，但是我创建容器之后没有地方创建密码的地方

在docker desktop点进对应的容器中创建密码

passwd

返回

sh: passwd: command not found

没有对应服务，继续安装对应服务

yum install passwd -y

安装好后

passwd

返回

Changing password for user root.
New password: 
BAD PASSWORD: The password is shorter than 8 characters
Retype new password: 
passwd: all authentication tokens updated successfully.

连续输入两次需要更改的密码即可

再通过xshell远程登陆，这次没有问题，顺利登陆容器

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