Docker多埠對映和映象遷移多份部署
閱讀此文章前請以上篇博文為基礎：http://blog.csdn.net/lishirong/article/details/72677860
本片博文主要解決以下幾個問題：
1.在一個docker中對映多個埠
2.一個映象在同一主機上的多份部署
3.映象遷移到其它linux主機進行部署
開始吧！
一、單docker多埠對映
1.首先得到現有的映象
#docker images
2.將18080和28080均對映到容器的8080埠REPOSITORY TAG IMAGE ID CREATED SIZE sdzn.com/tomcat 0.1 af2454df9380 10 seconds ago 514.6 MB docker.io/centos 7.2.1511 feac5e0dfdb2 8 months ago 194.6 MB
#docker run -d -p 18080:8080 -p 28080:8080 --name tomcat1 sdzn.com/tomcat:0.1 /root/run.sh
測試訪問均能成功http://127.0.0.1:18080和http://127.0.0.1:28080
3.檢視當前正在執行的映象
#docker ps
3.額外增加一個正在執行的映象CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 75626d3c702b sdzn.com/tomcat:0.1 "/root/run.sh" 2 minutes ago Up 2 minutes 0.0.0.0:18080->8080/tcp, 0.0.0.0:28080->8080/tcp tomcat1
#docker run -d -p 38080:8080 -p 48080:8080 --name tomcat2 sdzn.com/tomcat:0.1 /root/run.sh
#docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 6ccc5564b93e sdzn.com/tomcat:0.1 "/root/run.sh" 14 seconds ago Up 4 seconds 0.0.0.0:38080->8080/tcp, 0.0.0.0:48080->8080/tcp tomcat2 75626d3c702b sdzn.com/tomcat:0.1 "/root/run.sh" 6 minutes ago Up 6 minutes 0.0.0.0:18080->8080/tcp, 0.0.0.0:28080->8080/tcp tomcat1
4.停止一個容器和啟動一個容器
#docker stop tomcat2
#docker start tomcat2
#docker restart tomcat2
這樣可以重啟一個容器的服務，達到暫時減小記憶體佔用，恢復初始狀態的作用，但相應的容器的增量資料會被銷燬。
5.看下我1G記憶體的虛擬機器跑了5個docker容器例項
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4c4b3643d6a8 sdzn.com/tomcat:0.1 "/root/run.sh" About a minute ago Up About a minute 0.0.0.0:8085->8080/tcp, 0.0.0.0:8086->8080/tcp tomcat5
125574dfe0fc sdzn.com/tomcat:0.1 "/root/run.sh" 2 minutes ago Up 2 minutes 0.0.0.0:8083->8080/tcp, 0.0.0.0:8084->8080/tcp tomcat4
79f89f9df907 sdzn.com/tomcat:0.1 "/root/run.sh" 3 minutes ago Up 3 minutes 0.0.0.0:8081->8080/tcp, 0.0.0.0:8082->8080/tcp tomcat3
6ccc5564b93e sdzn.com/tomcat:0.1 "/root/run.sh" 21 minutes ago Up 12 minutes 0.0.0.0:38080->8080/tcp, 0.0.0.0:48080->8080/tcp tomcat2
75626d3c702b sdzn.com/tomcat:0.1 "/root/run.sh" 28 minutes ago Up 27 minutes 0.0.0.0:18080->8080/tcp, 0.0.0.0:28080->8080/tcp tomcat1百度上並沒有找到相關資訊，大多數建議是退出並另存為一個容器重新啟動。
二、單映象單機多份部署
在“一”中已經有提到，單映象可以理解是靜態的，可以從映象釋出為多個容器來服務。
三、映象遷移其它linux部署
1.映象匯出，只能講容器ID進行匯出
#docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4c4b3643d6a8 sdzn.com/tomcat:0.1 "/root/run.sh" 56 minutes ago Up 56 minutes 0.0.0.0:8085->8080/tcp, 0.0.0.0:8086->8080/tcp tomcat5
125574dfe0fc sdzn.com/tomcat:0.1 "/root/run.sh" 57 minutes ago Exited (137) 22 minutes ago tomcat4
79f89f9df907 sdzn.com/tomcat:0.1 "/root/run.sh" 58 minutes ago Exited (137) 22 minutes ago tomcat3
6ccc5564b93e sdzn.com/tomcat:0.1 "/root/run.sh" About an hour ago Exited (137) 23 minutes ago tomcat2
75626d3c702b sdzn.com/tomcat:0.1 "/root/run.sh" About an hour ago Exited (137) 23 minutes ago tomcat1
3dd730d024a3 feac "/bin/bash" About an hour ago Exited (0) About an hour ago zen_hypatia#docker export 75626d3c702b>tomcat1.tar
或者儲存映象檔案也可
#docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
sdzn.com/tomcat 0.2 3d37243864ed 37 seconds ago 509 MB
sdzn.com/tomcat 0.1 c4370254990a 6 hours ago 518 MB
docker.io/tomcat latest 3695a0fe8320 3 days ago 334.3 MB
docker.io/centos 7.2.1511 feac5e0dfdb2 8 months ago 194.6 MB#docker save 3d3>tomcat.tar
#ls
Desktop tomcat1.tar 模板 圖片 下載 桌面
install_agent.sh 公共 視訊 文件 音樂#ls
tomcat1.tar#cat tomcat1.tar | docker import - sdzn.com/tomcat:0.1
#docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
sdzn.com/tomcat 0.1 2c26a93be79d 23 seconds ago 514.7 MB# docker run -d -p 8080:8080 --name tomcat1 sdzn.com/tomcat:0.1 /root/run.sh
#docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9d760c4a36aa sdzn.com/tomcat:0.1 "/root/run.sh" 30 seconds ago Up 27 seconds 0.0.0.0:8080->8080/tcp tomcat15.訪問測試：
成功！至此完成了docker從CentOs7的匯出和向Ubuntu的匯入。
文獻參考：
1.http://blog.csdn.net/meegomeego/article/details/50707621
2.http://blog.csdn.net/pipisorry/article/details/51330126