docker centos7 安裝ssh具體步驟，這里記錄下，也行能幫助到正在讀文章的朋友。

一. 從docker hub 下載centos 官方鏡像

hr:centos7 hr$ docker pull centos:7 下載完后，查看本地資源庫：hr:centos7 hr$ docker imagesREPOSITORY      TAG         IMAGE ID      CREATED       VIRTUAL SIZE  centos        7          ce20c473cd8a    7 weeks ago     172.3 MB運行容器hr:centos7 hr$ docker run -i -t centos:7 /bin/bash

二. 安裝passwd,openssl,openssh-server

[root@b5926410fe60 /]# yum install passwd openssl openssh-server -y啟動sshd:# /usr/sbin/sshd -D這時報以下錯誤：[root@ b5926410fe60 /]# /usr/sbin/sshdCould not load host key: /etc/ssh/ssh_host_rsa_keyCould not load host key: /etc/ssh/ssh_host_ecdsa_keyCould not load host key: /etc/ssh/ssh_host_ed25519_key 執行以下命令解決：[root@b5926410fe60 /]# ssh-keygen -q -t rsa -b 2048 -f /etc/ssh/ssh_host_rsa_key -N ''  [root@b5926410fe60 /]# ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N ''[root@b5926410fe60 /]# ssh-keygen -t dsa -f /etc/ssh/ssh_host_ed25519_key -N '' 然后，修改 /etc/ssh/sshd_config 配置信息：UsePAM yes 改為 UsePAM no UsePrivilegeSeparation sandbox 改為 UsePrivilegeSeparation no[root@b5926410fe60 /]# sed -i "s/#UsePrivilegeSeparation.*/UsePrivilegeSeparation no/g" /etc/ssh/sshd_config[root@b5926410fe60 /]# sed -i "s/UsePAM.*/UsePAM no/g" /etc/ssh/sshd_config修改完后，重新啟動sshd[root@b5926410fe60 /]# /usr/sbin/sshd -D

三. 修改root 密碼

 [root@b5926410fe60 /]# passwd root

四. 查看容器ip地址（如果宿主機是linux操作系統則跳過這一步）

[root@b5926410fe60 /]# ip addr ls eth084: eth0@if85: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP   link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff  inet 172.17.0.2/16 scope global eth0    valid_lft forever preferred_lft forever  inet6 fe80::42:acff:fe11:2/64 scope link     valid_lft forever preferred_lft forever

五. 將當前容器保存為鏡像

hr:centos7 hr$ docker ps -allCONTAINER ID IMAGE    COMMAND    CREATED       STATUS          PORTS   NAMESb5926410fe60 centos:7  "/bin/bash" 4 minutes ago    Exited (0) 4 seconds ago      centos7sshhr:centos7 hr$ docker commit b5926410fe60 herong/centos7-ssh

六. 在宿主機上基于新創建的鏡像啟動新的容器

--先刪除之前的容器hr:centos7 hr$ docker ps -allCONTAINER ID    IMAGE   COMMAND       CREATED       STATUS           PORTS        NAMES4122f818a741    herong/centos7-ssh:latest  "/usr/sbin/sshd"  13 seconds ago   Exited (0) 13 seconds ago            happy_mcleanhr:centos7 hr$ docker rm -f 4122f818a741--基于新鏡像運行容器hr:centos7 hr$ docker run -d -p 10022:22 herong/centos7-ssh:latest /usr/sbin/sshd -D--查看映射端口是否成功hr:centos7 hr$ docker ps -allCONTAINER ID    IMAGE   COMMAND        CREATED       STATUS       PORTS          NAMES4966d35fe0a3    herong/centos7-ssh:latest  "/usr/sbin/sshd -D"  3 seconds ago    Up 3 seconds    0.0.0.0:10022->22/tcp  compassionate_kowalevskihr:centos7 hr$ docker port 4966d35fe0a322/tcp -> 0.0.0.0:10022