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[原创]Oracle Linux in Docker 测试

2017-08-23

[原创]Oracle Linux in Docker 测试

Docker

运作方式:

1. 从 Registry 下载 image

2. 使用 image 构建 container

3. 构筑 infrastructure

4. 将构建好的 container 储存成 image 

5. 上传 image 到 Registry

5 -> 1 循环更新

操作命令:

docker_commands

参考资料

Docker — 从入门到实践

5.2 Using the Docker Store

拉取Oracle Linux的docker试一试

登陆oracle store之后pull images

root@oraclelinux7:~# docker login container-registry.oracle.com
Username: xxxxx@yyyyyy.com
Password: 
Login Succeeded
root@oraclelinux7:~# docker pull container-registry.oracle.com/os/oraclelinux:6                                                  
6: Pulling from os/oraclelinux
88710002ea6c: Downloading [=>    ] 1.592 MB/68.76 MB    

~~省略 进行中~~

root@oraclelinux7:~# docker pull container-registry.oracle.com/os/oraclelinux:6                                                  
6: Pulling from os/oraclelinux
88710002ea6c: Pull complete                                                                                                      
Digest: sha256:9ee6b162062040c59f6bdc7fd47a9c55f08695c898d517b99bb6d48a0ed9ccf2
Status: Downloaded newer image for container-registry.oracle.com/os/oraclelinux:6
root@oraclelinux7:~# docker images
REPOSITORY                                     TAG                 IMAGE ID            CREATED             SIZE
oracle/database                                12.2.0.1-ee         ffd588858327        26 hours ago        13.2 GB
oraclelinux                                    7-slim              c0feb50f7527        2 weeks ago         118 MB
container-registry.oracle.com/os/oraclelinux   6                   7a4a8c404142        2 months ago        171 MB
root@oraclelinux7:~# docker pull container-registry.oracle.com/os/oraclelinux:7                                                  
7: Pulling from os/oraclelinux
e57cd89aabf1: Pull complete                                                                                                      
Digest: sha256:5e4d0f40f00ee2e62c78bd0ccb6bdbfdc166023b9b2da9a7ea58b2cb142e4633
Status: Downloaded newer image for container-registry.oracle.com/os/oraclelinux:7
root@oraclelinux7:~# 

运行&测试:

root@oraclelinux7:~# docker images
REPOSITORY                                     TAG                 IMAGE ID            CREATED             SIZE
oracle/database                                12.2.0.1-ee         ffd588858327        26 hours ago        13.2 GB
oraclelinux                                    7-slim              c0feb50f7527        2 weeks ago         118 MB
container-registry.oracle.com/os/oraclelinux   6                   7a4a8c404142        2 months ago        171 MB
container-registry.oracle.com/os/oraclelinux   7                   25e592d7eec7        2 months ago        225 MB
container-registry.oracle.com/os/oraclelinux   latest              25e592d7eec7        2 months ago        225 MB
root@oraclelinux7:~# docker run -it --name oraLinux7 -d container-registry.oracle.com/os/oraclelinux:7
0f038ec88708cd67857f7984947c780629e4afba16768866ff74bd13490c2c12
root@oraclelinux7:~# docker ps 
CONTAINER ID        IMAGE                                            COMMAND             CREATED             STATUS              PORTS               NAMES
0f038ec88708        container-registry.oracle.com/os/oraclelinux:7   "/bin/bash"         6 seconds ago       Up 2 seconds                            oraLinux7
root@oraclelinux7:~# 
root@oraclelinux7:~# docker exec -it oraLinux7 /bin/bash
[root@0f038ec88708 /]# uname -a
Linux 0f038ec88708 4.1.12-94.5.9.el7uek.x86_64 #2 SMP Tue Aug 15 13:56:37 PDT 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@0f038ec88708 /]# 

安装服务

yum clean all

yum install -y curl which tar sudo openssh-server openssh-clients net-tools rsync

yum install openssh-server net-tools -y

报错:

[root@0f038ec88708 ~]# service sshd start
Redirecting to /bin/systemctl start  sshd.service
Failed to get D-Bus connection: Operation not permitted
[root@0f038ec88708 ~]# 
[root@0f038ec88708 ~]# systemctl status sshd.service
Failed to get D-Bus connection: Operation not permitted
[root@0f038ec88708 ~]# 

参考

docker Failed to get D-Bus connection 报错

Failed to get D-Bus connection: Operation not permitted , docker安装centos7之坑

解决操作如下:

docker run –privileged -d -p 80:80 –name oraLinux7 container-registry.oracle.com/os/oraclelinux:7 /sbin/init

通过特权模式启动: –privileged

container启动方式:/sbin/init

root@oraclelinux7:~# docker images
REPOSITORY                                     TAG                 IMAGE ID            CREATED             SIZE
oracle/database                                12.2.0.1-ee         ffd588858327        28 hours ago        13.2 GB
oraclelinux                                    7-slim              c0feb50f7527        2 weeks ago         118 MB
container-registry.oracle.com/os/oraclelinux   6                   7a4a8c404142        2 months ago        171 MB
container-registry.oracle.com/os/oraclelinux   7                   25e592d7eec7        2 months ago        225 MB
container-registry.oracle.com/os/oraclelinux   latest              25e592d7eec7        2 months ago        225 MB
root@oraclelinux7:~# docker run --privileged -d -p 80:80 --name oraLinux7 container-registry.oracle.com/os/oraclelinux:7 /sbin/init
417d85369dacc8738390380c9222822ee49e7faa44ff5d10d6cf77b5bf388468
root@oraclelinux7:~# docker ps 
CONTAINER ID        IMAGE                                            COMMAND             CREATED             STATUS              PORTS                NAMES
417d85369dac        container-registry.oracle.com/os/oraclelinux:7   "/sbin/init"        7 seconds ago       Up 2 seconds        0.0.0.0:80->80/tcp   oraLinux7
root@oraclelinux7:~# docker exec -it oraLinux7 /bin/bash                                                                         
[root@417d85369dac /]# 
[root@417d85369dac /]# vi /etc/yum.conf   ### 有代理地址的话,设置代理
[root@417d85369dac /]# yum install -y curl which tar sudo openssh-server openssh-clients net-tools rsync
Loaded plugins: ovl, ulninfo
ol7_UEKR4                                                                                                 | 1.2 kB  00:00:00     
ol7_latest                                                                                                | 1.4 kB  00:00:00     
(1/5): ol7_UEKR4/x86_64/updateinfo                                                                        | 117 kB  00:00:00     

~~~ 省略 ~~~

  libcurl.x86_64 0:7.29.0-42.el7          openssh.x86_64 0:7.4p1-11.el7          openssl-libs.x86_64 1:1.0.2k-8.0.1.el7         

Complete!
[root@417d85369dac /]# 
[root@417d85369dac /]# systemctl start sshd      ### 启动ssh服务
[root@417d85369dac /]# ps -ef | grep ssh
root       291     1  0 08:50 ?        00:00:00 /usr/sbin/sshd -D                                                                
root       299   211  0 08:52 ?        00:00:00 grep --color=auto ssh                                                            
[root@417d85369dac /]# 
[root@417d85369dac /]# ifconfig          ### 查看IP地址
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
		inet 172.17.0.2  netmask 255.255.0.0  broadcast 0.0.0.0
		inet6 fe80::42:acff:fe11:2  prefixlen 64  scopeid 0x20<link>
		ether 02:42:ac:11:00:02  txqueuelen 0  (Ethernet)
		RX packets 24122  bytes 60465611 (57.6 MiB)
		RX errors 0  dropped 0  overruns 0  frame 0
		TX packets 11049  bytes 601201 (587.1 KiB)
		TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
		inet 127.0.0.1  netmask 255.0.0.0
		inet6 ::1  prefixlen 128  scopeid 0x10<host>
		loop  txqueuelen 0  (Local Loopback)
		RX packets 0  bytes 0 (0.0 B)
		RX errors 0  dropped 0  overruns 0  frame 0
		TX packets 0  bytes 0 (0.0 B)
		TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@417d85369dac /]# 

[root@417d85369dac /]# passwd          ### 修改密码
Changing password for user root.
New password: 
BAD PASSWORD: The password fails the dictionary check - it is based on a dictionary word
Retype new password: 
passwd: all authentication tokens updated successfully.
[root@417d85369dac /]# 

结果从host通过ssh连接container:

root@oraclelinux7:~# ssh 172.17.0.2
The authenticity of host '172.17.0.2 (172.17.0.2)' can't be established.
ECDSA key fingerprint is SHA256:l5b8xnanoY8N+6na/9sHRSaqGeYWPAY6UoBWiUGdpH4.
ECDSA key fingerprint is MD5:09:7f:b2:fd:c8:29:d2:f2:88:2d:c0:22:d2:8f:e1:c6.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '172.17.0.2' (ECDSA) to the list of known hosts.
root@172.17.0.2's password: 
[root@417d85369dac ~]#

最后自己打包一个:

** 可以看见images变更934M了

root@oraclelinux7:~# docker commit oraLinux7 my_oralinux7:7
sha256:8b7adc197f8d71e3f743ee3735025d26802097d5ba1727fbd8b9f7fa48b97d9e
root@oraclelinux7:~# 
root@oraclelinux7:~# docker images
REPOSITORY                                     TAG                 IMAGE ID            CREATED             SIZE
my_oralinux7                                   7                   8b7adc197f8d        28 seconds ago      934 MB
oracle/database                                12.2.0.1-ee         ffd588858327        28 hours ago        13.2 GB
oraclelinux                                    7-slim              c0feb50f7527        2 weeks ago         118 MB
container-registry.oracle.com/os/oraclelinux   6                   7a4a8c404142        2 months ago        171 MB
container-registry.oracle.com/os/oraclelinux   7                   25e592d7eec7        2 months ago        225 MB
container-registry.oracle.com/os/oraclelinux   latest              25e592d7eec7        2 months ago        225 MB
root@oraclelinux7:~# 

~~~~~ Lin Hong 2017/08/23 待续 ~~~~~


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