AIX删除多余的默认网关
系统环境：
操作系统：AIX 5.3.8
Oracle: Oracle 10gR2
案例分析：
在AIX系统上有多个默认网关，在安装RAC时，导致网络环境检测错误，无法安装RAC.
通过smit和route delete删除，系统在重启后又回到原来的状态！
解决方案：
1、查看当前默认网关
[root@aix230:/]#netstat -nr
Routing tables Destination Gateway Flags Refs Use If Exp Groups Route tree for Protocol Family 2 (Internet): default 192.168.8.1 UG 0 0 en0 - - default 10.10.10.1 UG 0 0 en1 - - default 10.10.10.1 UG 0 0 en1 - - 10.10.10.0 10.10.10.230 UHSb 0 0 en1 - - => 10.10.10/24 10.10.10.230 U 0 1 en1 - - 10.10.10.230 127.0.0.1 UGHS 0 1 lo0 - - 10.10.10.255 10.10.10.230 UHSb 0 4 en1 - - 127/8 127.0.0.1 U 13 247 lo0 - - 192.168.8.0 192.168.8.230 UHSb 0 0 en0 - - => 192.168.8/24 192.168.8.230 U 4 42 en0 - - 192.168.8.230 127.0.0.1 UGHS 0 1 lo0 - - 192.168.8.255 192.168.8.230 UHSb 0 4 en0 - - Route tree for Protocol Family 24 (Internet v6): ::1 ::1 UH 0 0 lo0 - -
2、查看ODM信息
[root@aix230:/]#lsattr -El inet0
authm 65536 Authentication Methods True
bootup_option no Use BSD-style Network Configuration True
gateway Gateway True
hostname aix230 Host Name True
rout6 IPv6 Route True
route net,-hopcount,0,,0,192.168.8.1 Route True
route net,-hopcount,0,,0,10.10.10.1 Route True
route net,-hopcount,2,,0,10.10.10.1 Route True
[root@aix230:/]#odmget -q "name=inet0" CuAt
CuAt: name = "inet0" attribute = "hostname" value = "aix230" type = "R" generic = "DU" rep = "s" nls_index = 24 CuAt: name = "inet0" attribute = "route" value = "net,-hopcount,0,,0,10.10.10.1" type = "R" generic = "DU" rep = "s" nls_index = 0 CuAt: name = "inet0" attribute = "route" value = "net,-hopcount,0,,0,192.168.8.1" type = "R" generic = "DU" rep = "s" nls_index = 0 CuAt: name = "inet0" attribute = "route" value = "net,-hopcount,2,,0,10.10.10.1" type = "R" generic = "DU" rep = "s" nls_index = 0
3、逐条删除没用的默认路由
[root@aix230:/]#chdev -l inet0 -a delroute="net,-hopcount,2,,0,10.10.10.1"
inet0 changed
4.确认生效
[root@aix230:/]#odmget -q "name=inet0" CuAt
CuAt: name = "inet0" attribute = "hostname" value = "aix230" type = "R" generic = "DU" rep = "s" nls_index = 24 CuAt: name = "inet0" attribute = "route" value = "net,-hopcount,0,,0,192.168.8.1" type = "R" generic = "DU" rep = "s" nls_index = 0
[root@aix230:/]#netstat -nr
Routing tables Destination Gateway Flags Refs Use If Exp Groups Route tree for Protocol Family 2 (Internet): default 192.168.8.1 UG 0 0 en0 - - 10.10.10.0 10.10.10.230 UHSb 0 0 en1 - - => 10.10.10/24 10.10.10.230 U 0 1 en1 - - 10.10.10.230 127.0.0.1 UGHS 0 1 lo0 - - 10.10.10.255 10.10.10.230 UHSb 0 4 en1 - - 127/8 127.0.0.1 U 13 247 lo0 - - 192.168.8.0 192.168.8.230 UHSb 0 0 en0 - - => 192.168.8/24 192.168.8.230 U 4 42 en0 - - 192.168.8.230 127.0.0.1 UGHS 0 1 lo0 - - 192.168.8.255 192.168.8.230 UHSb 0 4 en0 - - Route tree for Protocol Family 24 (Internet v6): ::1 ::1 UH 0 0 lo0 - -
@系统在重启后，不再出现多个default gw的现象，至此，问题得到解决！
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