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sysctl value not loaded for modules #168

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fsteinel opened this issue Jan 14, 2017 · 1 comment
Open

sysctl value not loaded for modules #168

fsteinel opened this issue Jan 14, 2017 · 1 comment

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@fsteinel
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fsteinel commented Jan 14, 2017 •
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sysctl doesn't load the values for modules.
Add those to the /etc/module file

nf_defrag_ipv4
nf_defrag_ipv6
nf_conntrack
nf_conntrack_ipv4
nf_conntrack_ipv6
nf_nat
iptable_nat
ipt_MASQUERADE
xt_comment
xt_conntrack
xt_recent
xt_tcpudp

list of modules determined via:

lsmod |grep -e ^ip -e ^nf_ -e ^xt|sort|less

Tested via

  • before the fix
sysctl -a > tag-2017-01-14-pre-mod-sysctl-fix
  • apply the above fix
  • after the fix
sysctl -a > tag-2017-01-14-after-mod-sysctl-fix
diff -Nup tag-2017-01-14-pre-mod-sysctl-fix tag-2017-01-14-after-mod-sysctl-fix |less

Found this depency while backtracking why net.netfilter.nf_conntrack_max=1048576 was not set.
see #172 for the new file /etc/sysctl.d/conntrack.conf
The file /etc/sysctl.d/conntrack.conf is created at manifests/system.pp
@fsteinel fsteinel mentioned this issue Jan 16, 2017
Closed
fsteinel added a commit to freifunk-kiel/ffki-puppet-gateway-install that referenced this issue Jan 16, 2017
@fsteinel
remove setting conntrack values a second time
325a4e4 
The setting
```net.ipv4.netfilter.ip_conntrack_max = 1048576```
is already set at /etc/sysctl.d/conntrack.conf
and is configurable at
[$conntrack_max](https://github.com/ffnord/ffnord-puppet-gateway/blob/master/manifests/params.pp#L11)
That the values are not set at boot are track at [issue 168](ffnord/ffnord-puppet-gateway#168)
The file creation via puppet is tracked at issue [issue 172](ffnord/ffnord-puppet-gateway#172)
@rubo77
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rubo77 commented May 2, 2017

maybe this is fixed with the hint: https://github.com/ffnord/ffnord-puppet-gateway#on-debian-jessie

modprobe ip_tables
modprobe ip_conntrack

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@fsteinel @rubo77