docker

来源：互联网发布：问卷调查如何数据分析编辑：程序博客网时间：2024/05/22 13:32

一台服务器同时运行一百个docker成为现实
docker 基于go语言

docker 1.10.3

安装docker

#docker安装软件问题root@268e83f76c36:/#  apt-get  install  build-essentialReading package lists... DoneBuilding dependency tree       Reading state information... DoneE: Unable to locate package build-essential#解决apt-get update#然后可以使用apt-get install net-tools

#docker ip[root@node .ssh]# ifconfigdocker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        inet 172.17.0.1  netmask 255.255.0.0  broadcast 0.0.0.0        inet6 fe80::42:beff:fed9:4808  prefixlen 64  scopeid 0x20<link>        ether 02:42:be:d9:48:08  txqueuelen 0  (Ethernet)        RX packets 8575  bytes 368509 (359.8 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 11048  bytes 66640365 (63.5 MiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

#centos 7 sudo yum install -y docker

#启动服务sudo service docker start#安装最新的ubuntusudo docker pull ubuntusudo docker pull ubuntu:14.04sudo docker pull ubuntudev.aliyun.comsudo docker pull ubuntusudo docker pull usgmxag3.mirror.aliyuncs.com  centoshttps://usgmxag3.mirror.aliyuncs.com

#docker 运行bashsudo docker run -t -i ubuntu /bin/bash#显示结果root@dbb94dd813a0:/# cat /etc/lsb-releaseDISTRIB_ID=UbuntuDISTRIB_RELEASE=16.04DISTRIB_CODENAME=xenialDISTRIB_DESCRIPTION="Ubuntu 16.04 LTS"root@dbb94dd813a0:/#

#显示机器上已有的镜像[ceph_user@node ~]$ sudo docker imagesREPOSITORY          TAG                 IMAGE ID            CREATED             SIZEdocker.io/ubuntu    latest              0f192147631d        5 days ago          132.7 MB[ceph_user@node ~]$ #显示docker 的全部信息sudo docker inspect 0f192147631d

#搜寻镜像sudo docker search mysql#查看本机存在的所有容器[ceph_user@node ~]$ sudo docker ps -aCONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                      PORTS               NAMESdbb94dd813a0        ubuntu              "/bin/bash"         18 minutes ago      Exited (0) 16 minutes ago                       sleepy_elion33bf5dea5890        ubuntu              "/bin/bash"         22 minutes ago      Exited (0) 20 minutes ago                       trusting_ritchie[ceph_user@node ~]$

docker的创建

已有镜像导入

sudo docker commit 688b91ec4b28 test

本地模板导入
dockerfile创建
比较复杂,最后讲

容器

#创建容器[ceph_user@node ~]$ sudo docker  create -it ubuntu6a0550ce62637c6faf5aee2544c52a5dec3c58c658f93b180be8a38cfd85980d[ceph_user@node ~]$ sudo docker ps -aCONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                         PORTS               NAMES6a0550ce6263        ubuntu              "/bin/bash"              3 minutes ago       Created

#让docker 以守护进程实现docker run  -d ubuntu  /bin/sh -c "while true; do echo hello world;sleep 1;done" #查看具体信息[root@node ceph_user]# docker logs cfhello worldhello worldhello world#停止容器docker stop  ID  -t  10#进入容器[root@node ceph_user]# docker run -idt ubuntud6231078272f7e25165774182433d42608945f445090c90d15be16e76dfa9d03[root@node ceph_user]# docker psCONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMESd6231078272f        ubuntu              "/bin/bash"         4 seconds ago       Up 3 seconds                            sick_borg[root@node ceph_user]# [root@node ceph_user]# docker exec -ti  12d /bin/bashroot@12d0001e3ec5:/#

#导出导入容器[root@node ceph_user]# docker export 12d0001e3ec5 > test.tar[root@node ceph_user]# lsa  docker_help.txt  rados-java  test.tar[root@node ceph_user]# #导入容器[root@node ceph_user]# cat test.tar | docker import  -  test/ubuntu:v1.0sha256:95ee9999b31c814b912ef560429e8044e44737086fe23fe5c00be2e18acb666e[root@node ceph_user]# docker imagesREPOSITORY          TAG                 IMAGE ID            CREATED             SIZEtest/ubuntu         v1.0                95ee9999b31c        7 seconds ago       118.3 MBtest                latest              117b3dd07416        12 hours ago        132.7 MBdocker.io/ubuntu    latest              0f192147631d        5 days ago          132.7 MB[root@node ceph_user]#

仓库

镜像的管理

6数据管理

数据卷
数据卷容器

数据卷

#创建数据卷[root@node ceph_user]# docker run -dti -P --name web_test -v /webapp  ubuntu268e83f76c3657588c7fc66c9f6fef50a310e354b4a8284a12288dd8109c3e5e[root@node ceph_user]# docker exec -ti 268 /bin/bashroot@268e83f76c36:/# root@268e83f76c36:/# ls | grep webwebapproot@268e83f76c36:/# #将本地 /home/ceph_user  挂载到容器的  /webappdocker run -tid -P --name web_file  -v  /home/ceph_user:/webapp ubuntu

数据卷容器

#建立容器 docker run -it -v /dbdata --name dbdata  ubuntu#其他容器挂载dbdata的数据卷docker run -it --volumes-from dbdata --name db1 ubunturoot@facc49209c57:/# lsbin   core    dev  home  lib64  mnt  proc  run   srv  tmp  varboot  dbdata  etc  lib   media  opt  root  sbin  sys  usr#在dbdata文件夹中的数据,所有的容器都有可以看到

7 网络基础配置

[root@node ceph_user]# docker run -tid -P --name net ubuntu    14f3130362c76a12520db7c4f35fd94de5046a7d3d58422675d8f0fc8b6e575d[root@node ceph_user]# docker ps -lCONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES14f3130362c7        ubuntu              "/bin/bash"         7 seconds ago       Up 6 seconds                            net[root@node ceph_user]#

8 Dockerfile创建镜像

9 操作系统

#创建支持ssh的镜像apt-get install  openssh-servermkdir -p  /var/run/sshd#commitdocker commit 2c17 sshd:ubuntu[root@node ceph_user]# docker imagesREPOSITORY          TAG                 IMAGE ID            CREATED              SIZEsshd                ubuntu              7e5180cc2e4f        About a minute ago   259.9 MBtest/ubuntu         v1.0                95ee9999b31c        5 hours ago          118.3 MBtest                latest              117b3dd07416        18 hours ago         132.7 MBdocker.io/ubuntu    latest              0f192147631d        5 days ago           132.7 MBdocker.io/busybox   latest              2b8fd9751c4c        11 days ago          1.093 MB[root@node ceph_user]# #启动容器[root@node ceph_user]# docker run  -p 10022:22 -d sshd:ubuntu  /run.sh7ccac1087eb9456bec7a01faa56c560f8ebc59de86fc736c480391cc69bd534e[root@node ceph_user]# docker psCONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                   NAMES7ccac1087eb9        sshd:ubuntu         "/run.sh"           44 seconds ago      Up 43 seconds       0.0.0.0:10022->22/tcp   loving_goodall#通过本机的  10.0.0.128  访问端口 10022[root@node ceph_user]# ssh 10.0.0.128 -p 10022The authenticity of host '[10.0.0.128]:10022 ([10.0.0.128]:10022)' can't be established.ECDSA key fingerprint is 71:36:25:29:17:7b:b5:cc:4d:06:e0:b9:4e:ed:98:e7.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added '[10.0.0.128]:10022' (ECDSA) to the list of known hosts.Welcome to Ubuntu 16.04 LTS (GNU/Linux 3.10.0-327.22.2.el7.x86_64 x86_64) * Documentation:  https://help.ubuntu.com * Management:     https://landscape.canonical.com * Support:        https://ubuntu.com/advantageThe programs included with the Ubuntu system are free software;the exact distribution terms for each program are described in theindividual files in /usr/share/doc/*/copyright.Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted byapplicable law.root@7ccac1087eb9:~#

12 数据库应用

docker pull registry.mirrors.aliyuncs.com/library/centos

docker 核心技术

root      2609     1  0 Jul05 ?        00:00:00 /bin/sh -c /usr/bin/docker-current daemon            --exec-opt native.cgroupdriver=systemd            $OPTIONS            $DOCKER_STORAGE_OPTIONS            $DOCKER_NETWORK_OPTIONS            $ADD_REGISTRY            $BLOCK_REGISTRY            $INSECURE_REGISTRY            2>&1 | /usr/bin/forward-journald -tag dockerroot      2610  2609  0 Jul05 ?        00:02:01 /usr/bin/docker-current daemon --exec-opt native.cgroupdriver=systemd --selinux-enabled --log-driver=journaldroot      2611  2609  0 Jul05 ?        00:00:00 /usr/bin/forward-journald -tag dockerroot     10101  2610  0 00:02 ?        00:00:01 docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 10022 -container-ip 172.17.0.6 -container-port 22root     11311  3724  0 04:12 pts/3    00:00:00 grep --color=auto docker

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