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请教扩大内存运行如下命令是否会有问题,是否可以恢复原状态,谢谢!
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redsmayday
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Joined: 18 Jun 2018
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PostPosted: Sun Sep 09, 2018 9:13 pm    Post subject: 请教扩大内存运行如下命令是否会有问题,是否可以恢复原状态,谢谢! Reply with quote

请教各位大侠!
我有一台服务器,运行CSF来防止攻击,但是希望增加多一些国家的屏蔽时,csf -r 显示如下
iptables: Memory allocation problem.
iptables: Memory allocation problem.
iptables: Memory allocation problem.
Error: FASTSTART: (TCP_OUT IPv4) [] [iptables-restore: line 17 failed]. Try rest arting csf with FASTSTART disabled, at line 4735

查询内存状态如下:
16597188 K total memory
6995852 K used memory
2721840 K active memory
3871436 K inactive memory
9601336 K free memory
349092 K buffer memory
5938516 K swap cache
2047844 K total swap
0 K used swap
2047844 K free swap
3156973 non-nice user cpu ticks
375900 nice user cpu ticks
2113409 system cpu ticks
5918899468 idle cpu ticks
1320304 IO-wait cpu ticks
5460220 IRQ cpu ticks
6684823 softirq cpu ticks
0 stolen cpu ticks
15861626 pages paged in
315324943 pages paged out
0 pages swapped in
0 pages swapped out
3182143506 interrupts
3346516201 CPU context switches
1521864963 boot time
2623257 forks

服务商由于不提供Gentoo的支持,于是只告诉我有可能可以更改如下配置,然后grub rebuild配置。
From :
GRUB_CMDLINE_LINUX_DEFAULT=""

To :
GRUB_CMDLINE_LINUX_DEFAULT="quiet vmalloc=384M"

由于我是小白,所以想请问各位,
1. 这个操作是否会对服务器造成不利的影响,如不能登录,程序不能运行等。
2. 如何这个操作应用后造成不利影响,是否可以通过更改配置
GRUB_CMDLINE_LINUX_DEFAULT="",应用后恢复系统原有的状态。

谢谢!
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