ssh访问docker容器
1、用户密码认证方式登陆
hsl@ubuntu:~$sudodockerimages
REPOSITORYTAGIMAGEIDCREATEDSIZE
hsl/ubuntu14.04_add_sourcealiyun_git_vim_ssh7e81fb2f82c544minutesago634.2MB
hsl/ubuntu14.04_JenkinsWithDocker_key6fb1d3cb798346hoursago760MB
hsl/ubuntu14.04_JenkinsWithDocker_password659fcb00b0dc3daysago760.1MB
ubuntu14.044a725d3b3b1c8daysago188MB
training/webapplatest6fae60ef344615monthsago348.8MB
hsl@ubuntu:~$sudodockerps-a
CONTAINERIDIMAGECOMMANDCREATEDSTATUSPORTSNAMES
hsl@ubuntu:~$sudodockerrun-tid-p22-Phsl/ubuntu:14.04_add_sourcealiyun_git_vim_ssh
ea153153c8837a4b0e1a8d0e6945200c7ac820c358d546202f1a95c72f12ca77
hsl@ubuntu:~$sudodockerexec-tiea/bin/bash
root@ea153153c883:/#cd/etc/ssh
root@ea153153c883:/etc/ssh#vimsshd_config
sshd_config需要关注三个地方，未修改之前是这样：
PermitRootLoginwithout-password
#AuthorizedKeysFile%h/.ssh/authorized_keys
#PasswordAuthenticationyes
说明：
#PermitRootLoginyes#允许root用户以任何认证方式登录（用户名密码认证和公钥认证）
#PermitRootLoginwithout-password#只允许root用公钥认证方式登录
#PermitRootLoginno#不允许root用户以任何认证方式登录
这里先修改两处：
PermitRootLoginwithout-password改为PermitRootLoginyes
#PasswordAuthenticationyes改为PasswordAuthenticationyes
root@ea153153c883:/etc/ssh#cd
root@ea153153c883:~#servicesshstart
*StartingOpenBSDSecureShellserversshd[OK]
root@ea153153c883:/#passwdroot
EnternewUNIXpassword:
RetypenewUNIXpassword:
passwd:passwordupdatedsuccessfully
root@ea153153c883:/#ifconfig
#获得docker的内网地址（inetaddr）：172.17.0.2
root@ea153153c883:/#exit
exit
hsl@ubuntu:[email protected]
[email protected]'spassword:
WelcometoUbuntu14.04LTS(GNU/Linux3.13.0-93-genericx86_64)
*Documentation:https://help.ubuntu.com/
TheprogramsincludedwiththeUbuntusystemarefreesoftware;
theexactdistributiontermsforeachprogramaredescribedinthe
individualfilesin/usr/share/doc/*/copyright.
UbuntucomeswithABSOLUTELYNOWARRANTY,totheextentpermittedby
applicablelaw.
root@ea153153c883:~#exit
logout
Connectionto172.17.0.2closed.
hsl@ubuntu:~$ifconfig
#获得宿主机的内网地址（inet地址）：192.168.127.159，这里试一下端口映射方式登陆docker
#因为做了端口映射，所以可以直接从映射的端口登陆，只需要知道和docker的22端口映射的宿主机端口和宿主机的ip（如果和docker的22做端口映射时候采用默认IP方式，则默认宿主机的所有IP都和docker的22端口映射，这样localhost和子网IP均可等登陆）
#即[email protected]和[email protected]都可以登陆docker
hsl@ubuntu:[email protected]
#第一次登陆有警告
Theauthenticityofhost'[192.168.127.159]:32771([192.168.127.159]:32771)'can'tbeestablished.
ECDSAkeyfingerprintisSHA256:icDOU4lcWTiFb4eIKUtosFNrqzGMo5ufzqXQfPdtSZg.
Areyousureyouwanttocontinueconnecting(yes/no)?yes
Warning:Permanentlyadded'[192.168.127.159]:32771'(ECDSA)tothelistofknownhosts.
[email protected]'spassword:
WelcometoUbuntu14.04.5LTS(GNU/Linux4.4.0-36-genericx86_64)
*Documentation:https://help.ubuntu.com/
Lastlogin:SunSep406:00:372016from172.17.0.1
root@ea153153c883:~#exit
logout
Connectionto192.168.127.159closed.
hsl@ubuntu:[email protected]
#再登录一遍就没有警告了
[email protected]'spassword:
WelcometoUbuntu14.04.5LTS(GNU/Linux4.4.0-36-genericx86_64)
*Documentation:https://help.ubuntu.com/
Lastlogin:SunSep406:01:332016from192.168.127.159
root@ea153153c883:~#exit
logout
Connectionto192.168.127.159closed.
2、公钥认证方式登陆
hsl@ubuntu:~$sudodockerrun-tid-p22-Phsl/ubuntu:14.04_add_sourcealiyun_git_vim_ssh
f2e54200c5c7f3310a27e274d7d8c9585ed3c79f921cb63edb8f3a00d1165e24
hsl@ubuntu:~$sudodockerps-a
CONTAINERIDIMAGECOMMANDCREATEDSTATUSPORTSNAMES
f2e54200c5c7hsl/ubuntu:14.04_add_sourcealiyun_git_vim_ssh"/bin/bash"15seconds
agoUp10seconds0.0.0.0:32768->22/tcpbig_brown
hsl@ubuntu:~$sudodockerexec-itf2/bin/bash
root@f2e54200c5c7:/#vim/etc/ssh/sshd_config
把第一步中提到的需要注意的三个地方做以下修改：
PermitRootLoginwithout-password
#AuthorizedKeysFile%h/.ssh/authorized_keys改为AuthorizedKeysFile%h/.ssh/authorized_keys
#PasswordAuthenticationyes改为PasswordAuthenticationyes
（如果服务器不在本地，千万不能PasswordAuthenticationyes->no，万一当前的ssh链接中断，万一RAS认证没弄好，密码验证又禁止了。可以理解为公钥认证优先于用户密码认证，但是万一公钥认证失败，用用户密码认证以防万一）
root@f2e54200c5c7:/#exit
exit
hsl@ubuntu:~$ssh-keygen-trsa
#一直回车，生成宿主机的密钥
hsl@ubuntu:~$cd.ssh
hsl@ubuntu:~/.ssh$ls
id_rsaid_rsa.pub
hsl@ubuntu:~/[email protected]:~/.ssh/
[email protected]'spassword:
id_rsa.pub100%3920.4KB/s00:00
hsl@ubuntu:~/.ssh$sudodockerexec-itf2/bin/bash
root@ea153153c883:/#cd
root@ea153153c883:~#cd.ssh
root@ea153153c883:~/.ssh#ls
id_rsa.pub
root@ea153153c883:~/.ssh#mvid_rsa.pubauthorized_keys
root@ea153153c883:~/.ssh#ls
authorized_keys
********可以替换上面的通过scp方法把公钥传送到docker*********
#或者直接把宿主机的id_rsa.pub内容复制到docker的/root/.ssh/authorized_keys
hsl@ubuntu:~$cd.ssh
hsl@ubuntu:~/.ssh$ls
id_rsaid_rsa.pubknown_hosts
hsl@ubuntu:~/.ssh$catid_rsa.pub
#宿主机的公钥
hsl@ubuntu:~/.ssh$sudodockerexec-itf2/bin/bash
root@f2e54200c5c7:/#ssh-keygen-trsa
#这一步只是为了方便产生docker的.ssh目录
root@f2e54200c5c7:/#cd
root@f2e54200c5c7:~#cd.ssh
root@f2e54200c5c7:~/.ssh#ls
id_rsaid_rsa.pub
root@f2e54200c5c7:~/.ssh#touchauthorized_keys
root@f2e54200c5c7:~/.ssh#ls
authorized_keysid_rsaid_rsa.pub
root@f2e54200c5c7:~/.ssh#vimauthorized_keys
#把宿主机的id_rsa.pub内容复制到docker的/root/.ssh/authorized_keys
********可以替换上面的通过scp方法把公钥传送到docker*********
root@f2e54200c5c7:/#servicesshstart
*StartingOpenBSDSecureShellserversshd[OK]
root@f2e54200c5c7:/#exit
exit
hsl@ubuntu:~/[email protected]
WelcometoUbuntu14.04.5LTS(GNU/Linux4.4.0-36-genericx86_64)
*Documentation:https://help.ubuntu.com/
Lastlogin:SunSep408:18:212016from172.17.0.1
root@f2e54200c5c7:~#exit
logout
Connectionto172.17.0.2closed.