docker的四种网络模式

/*

    1. host模式 :

                        docker run 使用 --net=host指定

        docker使用的网络实际上和宿主机一样


    2. container模式:

                        使用 --net=container:container_id/container_name

        多个容器使用共同的网络,看到的ip是一样的。

    
    3. none 模式

                        使用 --net=none指定

        这种模式下,不会配置任何网络。


     4. bridge模式

                        使用 --net=bridge指定

        默认模式,不会指定

                此模式会为每个容器分配一个独立的network namespace
*/

 

/* 外部网络访问容器 :外部的用户要访问容器,先将容器的ip映射出去,然后客户利用宿主机的ip来访问*/
[root@30c1fec5df6a /]# yum install -y httpd
//虽然报错,但是httpd已经启动
[root@30c1fec5df6a /]# /usr/sbin/httpd
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.17.0.3. Set the 'ServerName' directive globally to suppress this message
[root@30c1fec5df6a /]# ps aux|grep httpd
root       111  0.1  0.3 221856  3480 ?        Ss   11:41   0:00 /usr/sbin/httpd
apache     112  0.0  0.2 221856  2632 ?        S    11:41   0:00 /usr/sbin/httpd
apache     113  0.0  0.2 221856  2632 ?        S    11:41   0:00 /usr/sbin/httpd
apache     114  0.0  0.2 221856  2632 ?        S    11:41   0:00 /usr/sbin/httpd
apache     115  0.0  0.2 221856  2632 ?        S    11:41   0:00 /usr/sbin/httpd
apache     116  0.0  0.2 221856  2632 ?        S    11:41   0:00 /usr/sbin/httpd
root       118  0.0  0.0   8988   812 ?        S+   11:41   0:00 grep --color=auto httpd

/* !!!!但对于外部来说,是无法访问容器里的httpd的 */

//先利用容器生成镜像
[root@localhost ~]# docker commit -m "centos_with_httpd" -a "frankie" 30c centos_with_httpd:frankie
fb83cd744da57dba7fb3e5bf861bd0d014da7508b8f47adeb1a3fd4ac01252ed
[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
centos_with_httpd   frankie             fb83cd744da5        2 minutes ago       325.8 MB

// -p 可以指定端口映射
[root@localhost ~]# docker run -itd -p 5123:80 centos_with_httpd:frankie bash
3f043c0dc5b456e53ff040d53d1455cbaa6bedad7d35954be3718a859bea8c24

//进入映射了端口的容器里
[root@localhost ~]# docker exec -it 3f0 bash

//启动httpd服务
[root@3f043c0dc5b4 /]# /usr/sbin/httpd
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.17.0.12. Set the 'ServerName' directive globally to suppress this message
[root@3f043c0dc5b4 /]# ps aux|grep httpd
root        33  0.1  0.3 221856  3508 ?        Ss   11:55   0:00 /usr/sbin/httpd
apache      34  0.0  0.2 221856  2632 ?        S    11:55   0:00 /usr/sbin/httpd
apache      35  0.0  0.2 221856  2632 ?        S    11:55   0:00 /usr/sbin/httpd
apache      36  0.0  0.2 221856  2632 ?        S    11:55   0:00 /usr/sbin/httpd
apache      37  0.0  0.2 221856  2632 ?        S    11:55   0:00 /usr/sbin/httpd
apache      38  0.0  0.2 221856  2632 ?        S    11:55   0:00 /usr/sbin/httpd
root        40  0.0  0.0   8988   812 ?        S+   11:55   0:00 grep --color=auto httpd

//成功启动httpd,所以可以连接到
[root@3f043c0dc5b4 /]# curl localhost
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
                <title>Apache HTTP Server Test Page powered by CentOS</title>
                <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

    <!-- Bootstrap -->
    <link href="/noindex/css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" href="noindex/css/open-sans.css" type="text/css" />

<style type="text/css"><!--
...
...

[root@3f043c0dc5b4 /]# vi /var/www/html/1.html
[root@3f043c0dc5b4 /]# curl localhost/1.html
frankielinux.com
[root@3f043c0dc5b4 /]# exit

//回到宿主机 ,查看docker的ip
[root@localhost ~]# ifconfig
docker0   Link encap:Ethernet  HWaddr 12:90:97:4F:79:75
          inet addr:172.17.42.1  Bcast:0.0.0.0  Mask:255.255.0.0
          inet6 addr: fe80::e443:adff:fe6d:3b2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:11858 errors:0 dropped:0 overruns:0 frame:0
          TX packets:30521 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:480913 (469.6 KiB)  TX bytes:41003387 (39.1 MiB)

//通过httpd连接,则可以在外部连接容器
[root@localhost ~]# curl 172.17.42.1:5123/1.html
frankielinux.com


//这个容器有端口映射
[root@localhost ~]# docker ps
CONTAINER ID        IMAGE                       COMMAND             CREATED             STATUS              PORTS                  NAMES
3f043c0dc5b4        centos_with_httpd:frankie   "bash"              10 minutes ago      Up 10 minutes       0.0.0.0:5123->80/tcp   boring_ardinghelli

 

/* 容器互联 */
/* 所以可以开启一个新的容器,

 用Centos6的镜像来做一个容器--然后来用yum源来安装MySQL
*/

[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
centos_with_httpd   frankie             fb83cd744da5        About an hour ago   325.8 MB
centos-6-x86        latest              c37f3636c1f8        21 hours ago        343.8 MB
centos_with_net     latest              c5b412fe1c33        22 hours ago        294.1 MB
centos              latest              d83a55af4e75        4 weeks ago         196.7 MB
frankie             latest              d83a55af4e75        4 weeks ago         196.7 MB
registry            latest              ad8da6d14f6d        4 weeks ago         33.28 MB
[root@localhost ~]# docker run -itd centos-6-x86 bash
faaa5d792a21f3735e4ade09a9767ab90a54c13b19084a9b004b4dd595615310
[root@localhost ~]# docker exec -it faaa bash
[root@faaa5d792a21 /]# yum install -y mysql-server
Loaded plugins: fastestmirror
Setting up Install Process
base                                                                            | 3.7 kB     00:00
base/primary_db                                                                 | 4.7 MB     00:06
extras                                                                          | 3.4 kB     00:00
extras/primary_db                                                               |  37 kB     00:00
[root@faaa5d792a21 /]# /etc/init.d/mysqld start
Initializing MySQL database:  Installing MySQL system tables...
OK
Filling help tables...
OK

[root@faaa5d792a21 /]# netstat -lnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      -              
Active UNIX domain sockets (only servers)
Proto RefCnt Flags       Type       State         I-Node PID/Program name    Path
unix  2      [ ACC ]     STREAM     LISTENING     27434  -                   /var/lib/mysql/mysql.sock
[root@faaa5d792a21 /]# exit
[root@localhost ~]# docker commit -m "centos_with_mysql" -a "frankie" faaa centos6_with_mysql
5c15987b3c3ac435be66b773410384bd2b17e4ac640876ab0687a931ee1bb0fb
[root@localhost ~]# docker run -itd -p 13306:3306 centos6_with_mysql bash
afbe47d822beccbb74bd379974b9f2507ac56c2c71a176ab41aceaa7b269aed4
[root@localhost ~]# docker ps
CONTAINER ID        IMAGE                       COMMAND             CREATED                                 PORTS                     NAMES
afbe47d822be        centos6_with_mysql          "bash"              5 seconds ag                            0.0.0.0:13306->3306/tcp   ecstatic_sinoussi

[root@localhost ~]# docker run -itd -p 18080:80 --name web --link ecstatic_sinou                       ssi:db centos_with_httpd:frankie
a21afaa4da5bcb8c6197bf781a6731cfaf28a853a06fe865225a9897f1eb743d
[root@localhost ~]# docker ps
CONTAINER ID        IMAGE                       COMMAND             CREATED                                    STATUS              PORTS                     NAMES
a21afaa4da5b        centos_with_httpd:frankie   "bash"              15 seconds a                       go      Up 9 seconds        0.0.0.0:18080->80/tcp     web
[root@localhost ~]# docker exec -it web bash
[root@a21afaa4da5b /]# ping db
PING db (172.17.0.14) 56(84) bytes of data.
64 bytes from db (172.17.0.14): icmp_seq=1 ttl=64 time=22.1 ms
64 bytes from db (172.17.0.14): icmp_seq=2 ttl=64 time=0.065 ms
^C
--- db ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 0.065/11.105/22.146/11.041 ms
[root@a21afaa4da5b /]# cat /etc/hosts
172.17.0.15     a21afaa4da5b
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.17.0.14     db afbe47d822be ecstatic_sinoussi

 

posted @ 2016-08-30 16:58  Frankiee  阅读(28952)  评论(0编辑  收藏  举报