SLES9下的双网卡绑定

kde2000

1. 
   
2. #!/bin/bash
   
3. 
   
4. #双网卡绑定使用方法
   
5. 
   
6. #将bond脚本复制到/etc/init.d/下，确保权限为755
   
7. #确保在Yast里最好不要对需要绑定的网卡作设置,如果有，将设备删除，使之处于未设置的状态。
   
8. #根据自身需要修改以下变量，然后用chkconfig命令将bond服务在3,5运行级别启用。
   
9. #然后到/etc/init.d/rc3.d,和/etc/init.d/rc5.d/下检查bond服务是否运行在network
   
10. #之后,如果不是，则需要手工链接。
    
11. #bond_ip    需要设置的IP
    
12. #bond_netmask    子网掩码
    
13. #bond_gw    缺省网关
    
14. #bond_mode    绑定的模式
    
15. #host_route_ip    主机路由的IP,如果没有，留空
    
16. #host_route_dev    主机路由的设备
    
17. 
    
18. #dev_list    需要绑定的设备名称，用空格分开
    
19. #primary_eth    主设备名称
    
20. 
    
21. bond_ip=192.168.1.18
    
22. bond_netmask=255.255.255.0
    
23. bond_gw=192.168.1.1
    
24. bond_mode=active-backup
    
25. #bond_mode=balance_rr
    
26. host_route_ip=192.168.2.1
    
27. host_route_dev=bond0
    
28. 
    
29. dev_list="eth0 eth1"
    
30. primary_eth="eth0"
    
31. mii_val=100
    
32. dev_num=`echo $dev_list | awk '{print NF}'`
    
33. 
    
34. function wait_real_interfaces() {
    
35.     local max_wait=120
    
36.     local wait_count=0
    
37.     local chk_dev_count=0
    
38.     local dev=""
    
39. 
    
40.     while [ 0 ];do
    
41.         chk_dev_count=0
    
42.         #Check each device in the list
    
43.         for dev in $dev_list;do
    
44.             chk_eth=`cat /proc/net/dev | awk '{print $1}' | grep "$dev:" | sed 's/:[0-9]*//' | wc -l`
    
45.             if [ $chk_eth -eq 1 ];then
    
46.                 chk_dev_count=$[chk_dev_count+1]
    
47.             fi
    
48.         done
    
49. 
    
50.         if [ $wait_count -eq $max_wait ];then
    
51.             echo "Max waits reached,abort to wait real interfaces!"
    
52.             exit 1
    
53.         fi
    
54. 
    
55.         if [ $chk_dev_count -eq $dev_num ];then
    
56.             return 0
    
57.         fi
    
58. 
    
59.         wait_count=$[wait_count+1]
    
60.         echo "Bonding network : waiting for real interfaces,retry at $wait_count,max waits is $max_wait"
    
61.         sleep 1
    
62.     done
    
63. }
    
64. 
    
65. function check_real_interfaces() {
    
66.     local chk_eth=0
    
67.     local chk_dev_count=0
    
68. 
    
69.     for dev in $dev_list;do
    
70.         chk_eth=`ifconfig -a $dev | grep $dev | awk '{print $1}' | wc -l`
    
71.         if [ $chk_eth -eq 1 ];then
    
72.             chk_dev_count=$[chk_dev_count+1]
    
73.         fi
    
74.     done
    
75. 
    
76.     if [ $chk_dev_count -eq $dev_num ];then
    
77.         return 0
    
78.     fi
    
79. 
    
80.     return 1
    
81. }
    
82. 
    
83. function check_bond_device() {
    
84.     local chk_num=$[dev_num+1]
    
85. 
    
86.     chk_bond=`ifconfig | grep "$bond_ip" | wc -l`
    
87.     if [ $chk_bond -eq $chk_num ];then
    
88.         echo "--------------------------------------------------------------------------------"
    
89.         echo "Bond IP : $bond_ip , Netmask : $bond_netmask , Gateway : $bond_gw"
    
90.         echo "Bonding network devices are successfully setup!"
    
91.         echo "--------------------------------------------------------------------------------"
    
92.         return 0
    
93.     else
    
94.         echo "Bonding network device is NOT setup correctly!"
    
95.         return 1
    
96.     fi
    
97. }
    
98. 
    
99. function init_bond_device() {
    
100.     local dev=""
     
101.     modprobe bonding mode=$bond_mode miimon=$mii_val primary=$primary_eth
     
102.     ifconfig bond0 inet $bond_ip netmask $bond_netmask
     
103.     if [ -n "$host_route_ip" -a -n "$host_route_dev" ];then
     
104.         route add -host $host_route_ip dev $host_route_dev
     
105.     fi
     
106.     route add default gw $bond_gw
     
107. 
     
108.     stop_real_devices
     
109. 
     
110.     for dev in $dev_list;do
     
111.         ifconfig $dev up
     
112.         ifenslave bond0 $dev
     
113.     done
     
114. 
     
115.     ifconfig bond0 up
     
116. }
     
117. 
     
118. function start_bond_device() {
     
119.     local max_attempt=30
     
120.     local attempt_count=0
     
121.     local interval=3
     
122.    
     
123.     while [ 0 ];do
     
124.         wait_real_interfaces
     
125.         if [ $? -eq 0 ];then
     
126.             echo "All real network devices are initialized!"
     
127.         fi
     
128. 
     
129.         check_real_interfaces
     
130.         if [ $? -eq 1 ];then
     
131.             continue
     
132.         fi
     
133. 
     
134.         echo "Wait for $interval seconds to bind real interface..."
     
135.         sleep $interval
     
136.         init_bond_device
     
137. 
     
138.         check_bond_device
     
139.         if [ $? -eq 0 ];then
     
140.             break
     
141.         else
     
142.             stop_bond_device
     
143.             attempt_count=$[attempt_count+1]
     
144.             echo "Binding real interfaces,retry at $attempt_count,max attempts is $max_attempt"
     
145.             if [ $attempt_count -eq $max_attempt ];then
     
146.                 echo "Max attempt retry reached,abort to setup bonding network!"
     
147.                 exit 1
     
148.             fi
     
149.             continue
     
150.         fi
     
151.     done
     
152. }
     
153. 
     
154. function stop_real_devices() {
     
155.     local dev=""
     
156. 
     
157.     #stop all devices in the list
     
158.     for dev in $dev_list;do
     
159.        ifdown $dev 2>&1 > /dev/null
     
160.     done
     
161. 
     
162.     #stop every real devices that may be configured as the same ip address
     
163.     for dev in `cat /proc/net/dev | grep eth | sed 's/:.*//'`;do
     
164.         chk_ip=`ifconfig $dev | grep $bond_ip | wc -l`
     
165.         if [ $chk_ip -eq 1 ];then
     
166.             ifdown $dev 2>&1 > /dev/null
     
167.         fi
     
168.         chk_ip=0
     
169.     done
     
170. }
     
171. 
     
172. function stop_bond_device() {
     
173.     local dev=""
     
174. 
     
175.     chk_bond=`ifconfig | grep bond`
     
176.     if [ -z "$chk_bond" ];then
     
177.         echo "Bonding device is not up,no need to stop"
     
178.         return 0
     
179.     fi
     
180. 
     
181.     echo "Stopping bonding devices..."
     
182.     for dev in $dev_list;do
     
183.         ifenslave -d bond0 $dev
     
184.     done
     
185. 
     
186.     stop_real_devices
     
187. 
     
188.     ifconfig bond0 down
     
189.     rmmod bonding
     
190. }
     
191. 
     
192. 
     
193. case $1 in
     
194. #Initialize bonding device,try every times until everything is OK
     
195.     start)
     
196.         start_bond_device
     
197.         ;;
     
198. 
     
199. #Unbind and stop the bonding & real network interfaces
     
200.     stop)
     
201.         stop_bond_device
     
202.         ;;
     
203. 
     
204. #Reset the bonding devices
     
205.     restart)
     
206.         stop_bond_device
     
207.         start_bond_device
     
208.         ;;
     
209. #Show status for bonding device
     
210.     status)
     
211.         check_bond_device
     
212.         ;;
     
213.     *)
     
214.         echo "Usage:`basename $0` [ start | stop | restart | status]"
     
215.         exit 0
     
216.         ;;
     
217. esac
     
218. 
     
219. exit 0
     

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