/*
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 0.1 0.3 ? Ss : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
root 0.0 0.0 ? S+ : : 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 minutes ago 325.8 MB
// -p 可以指定端口映射
[root@localhost ~]# docker run -itd -p : 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 0.1 0.3 ? Ss : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
apache 0.0 0.2 ? S : : /usr/sbin/httpd
root 0.0 0.0 ? S+ : : 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/.html
[root@3f043c0dc5b4 /]# curl localhost/.html
frankielinux.com
[root@3f043c0dc5b4 /]# exit
//回到宿主机 ，查看docker的ip
[root@localhost ~]# ifconfig
docker0 Link encap:Ethernet HWaddr :::4F::
inet addr:172.17.42.1 Bcast:0.0.0.0 Mask:255.255.0.0
inet6 addr: fe80::e443:adff:fe6d:3b2/ Scope:Link
UP BROADCAST RUNNING MULTICAST MTU: Metric:
RX packets: errors: dropped: overruns: frame:
TX packets: errors: dropped: overruns: carrier:
collisions: txqueuelen:
RX bytes: (469.6 KiB) TX bytes: (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:/.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" minutes ago Up minutes 0.0.0.0:->/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--x86 latest c37f3636c1f8 hours ago 343.8 MB
centos_with_net latest c5b412fe1c33 hours ago 294.1 MB
centos latest d83a55af4e75 weeks ago 196.7 MB
frankie latest d83a55af4e75 weeks ago 196.7 MB
registry latest ad8da6d14f6d weeks ago 33.28 MB
[root@localhost ~]# docker run -itd centos--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 :
base/primary_db | 4.7 MB :
extras | 3.4 kB :
extras/primary_db | kB :
[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: 0.0.0.0:* LISTEN -
Active UNIX domain sockets (only servers)
Proto RefCnt Flags Type State I-Node PID/Program name Path
unix [ ACC ] STREAM LISTENING - /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 : centos6_with_mysql bash
afbe47d822beccbb74bd379974b9f2507ac56c2c71a176ab41aceaa7b269aed4
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED PORTS NAMES
afbe47d822be centos6_with_mysql "bash" seconds ag 0.0.0.0:->/tcp ecstatic_sinoussi
[root@localhost ~]# docker run -itd -p : --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" seconds a go Up seconds 0.0.0.0:->/tcp web
[root@localhost ~]# docker exec -it web bash
[root@a21afaa4da5b /]# ping db
PING db (172.17.0.14) () bytes of data.
bytes from db (172.17.0.14): icmp_seq= ttl= time=22.1 ms
bytes from db (172.17.0.14): icmp_seq= ttl= time=0.065 ms
^C
--- db ping statistics ---
packets transmitted, received, % 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
:: localhost ip6-localhost ip6-loopback
fe00:: ip6-localnet
ff00:: ip6-mcastprefix
ff02:: ip6-allnodes
ff02:: ip6-allrouters
172.17.0.14 db afbe47d822be ecstatic_sinoussi
