sysctl -P 报错解决办法

郑全

这个模块是做什么的?什么情况下,不会自动加载呢.

monkeybird

在修改了文件/etc/sysctl.conf后，为了是修改生效，于是执行了命令：sysctl -p，结果出现以下错误：
[root@localhost ~]# sysctl -p
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key
error: "net.bridge.bridge-nf-call-iptables" is an unknown key
error: "net.bridge.bridge-nf-call-arptables" is an unknown key
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 4294967295
kernel.shmall = 268435456
kernel.shmmax = 1073741824
kernel.shmmni = 4096
kernel.shmall = 1048576
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
 
解决办法：
这是因为我们没有加载bridge模块，需要手工加载。解决过程如下：
[root@localhost ~]# lsmod|grep bridge
[root@localhost ~]# modprobe bridge
[root@localhost ~]# lsmod|grep bridge
bridge                 64084  0
stp                     1626  2 bridge,garp
llc                     4258  3 bridge,garp,stp

[root@localhost ~]# sysctl -p
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
net.bridge.bridge-nf-call-ip6tables = 0
net.bridge.bridge-nf-call-iptables = 0
net.bridge.bridge-nf-call-arptables = 0
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 4294967295
kernel.shmall = 268435456
kernel.shmmax = 1073741824
kernel.shmmni = 4096
kernel.shmall = 1048576
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000