Azure上每个VM多个IP地址

Azure的每个VM都有多种IP地址，包括DIP、VIP和PIP。具体如下：

DIP地址是在VM里能够看到的IP地址，即私网地址；PIP地址是这个VM关联的公网IP地址，即公网地址；VIP地址是负载均衡的地址。

目前Azure的VM已经支持每个网卡关联多个ipconfig，即可以支持VM的每个网卡关联多个私网和公网地址：DIP和PIP。

如下图：

具体配置如下：

1. VM种NIC的ipconfig

2. 添加ipconfig

点击添加后：

按相同的方法再添加第三个ipconfig，配置完后的配置结果：

3. VM内的配置（CentOS7）

登录到VM中，做如下修改：

[root@hwvntp01 init.d]# cd /etc/sysconfig/network-scripts/
[root@hwvntp01 network-scripts]# vim ifcfg-eth0:
DEVICE=eth0:
ONBOOT=yes
BOOTPROTO=static
IPADDR=10.3.1.6
NETMASK=255.255.255.0
[root@hwvntp01 network-scripts]# vim ifcfg-eth0:
DEVICE=eth0:
ONBOOT=yes
BOOTPROTO=static
IPADDR=10.3.1.7
NETMASK=255.255.255.0

然后重启Network的服务：

[root@hwvntp01 network-scripts]# cd /etc/init.d
[root@hwvntp01 init.d]# ./network restart

4. 检验

[root@hwvntp01 html]# ifconfig
eth0: flags=<UP,BROADCAST,RUNNING,MULTICAST> mtu
inet 10.3.1.5 netmask 255.255.255.0 broadcast 10.3.1.255
inet6 fe80:::faff:fe00:40f2 prefixlen  scopeid 0x20<link>
ether ::fa:::f2 txqueuelen  (Ethernet)
RX packets  bytes  (125.5 MiB)
RX errors  dropped  overruns  frame
TX packets  bytes  (46.3 MiB)
TX errors  dropped  overruns  carrier  collisions
 
eth0:: flags=<UP,BROADCAST,RUNNING,MULTICAST> mtu
inet 10.3.1.6 netmask 255.255.255.0 broadcast 10.3.1.255
ether ::fa:::f2 txqueuelen  (Ethernet)
 
eth0:: flags=<UP,BROADCAST,RUNNING,MULTICAST> mtu
inet 10.3.1.7 netmask 255.255.255.0 broadcast 10.3.1.255
ether ::fa:::f2 txqueuelen  (Ethernet)
 
lo: flags=<UP,LOOPBACK,RUNNING> mtu
inet 127.0.0.1 netmask 255.0.0.0
inet6 :: prefixlen  scopeid 0x10<host>
loop txqueuelen  (Local Loopback)
RX packets  bytes  (1.0 KiB)
RX errors  dropped  overruns  frame
TX packets  bytes  (1.0 KiB)
TX errors  dropped  overruns  carrier  collisions
 
[root@hwvntp01 html]# ping www.sina.com.cn
PING ara.sina.com.cn (121.14.1.190) () bytes of data.
 bytes from 121.14.1.190 (121.14.1.190): icmp_seq= ttl= time=45.7 ms
 bytes from 121.14.1.190 (121.14.1.190): icmp_seq= ttl= time=45.7 ms
^C
--- ara.sina.com.cn ping statistics ---
 packets transmitted,  received, % packet loss, time 1001ms
rtt min/avg/max/mdev = 45.710/45.716/45.723/0.213 ms
[root@hwvntp01 html]# ping -I 10.3.1.6 www.sina.com.cn
PING ara.sina.com.cn (121.14.1.190) from 10.3.1.6 : () bytes of data.
 bytes from 121.14.1.190 (121.14.1.190): icmp_seq= ttl= time=48.4 ms
 bytes from 121.14.1.190 (121.14.1.190): icmp_seq= ttl= time=48.5 ms
^C
--- ara.sina.com.cn ping statistics ---
 packets transmitted,  received, % packet loss, time 999ms
rtt min/avg/max/mdev = 48.406/48.470/48.535/0.229 ms
[root@hwvntp01 html]# ping -I 10.3.1.7 www.sina.com.cn
PING ara.sina.com.cn (121.14.1.190) from 10.3.1.7 : () bytes of data.
 bytes from 121.14.1.190 (121.14.1.190): icmp_seq= ttl= time=46.3 ms
 bytes from 121.14.1.190 (121.14.1.190): icmp_seq= ttl= time=46.4 ms
 bytes from 121.14.1.190 (121.14.1.190): icmp_seq= ttl= time=46.1 ms
 bytes from 121.14.1.190 (121.14.1.190): icmp_seq= ttl= time=46.2 ms
^C
--- ara.sina.com.cn ping statistics ---
 packets transmitted,  received, % packet loss, time 5958ms
rtt min/avg/max/mdev = 46.190/46.298/46.423/0.277 ms

5. 通过服务检验

在VM中安装httpd：

yum install -y httpd
systemctl start httpd
systemctl status httpd
● httpd.service - The Apache HTTP Server
Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)
Active: active (running) since Fri -- :: UTC; 6s ago
Docs: man:httpd()
man:apachectl()
Main PID:  (httpd)

从外部检测：

三个地址都可以访问。