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[Backport 1.31-strict] fix: ensure nf_conntrack module loaded for kubelite. #4731

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Oct 29, 2024
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[Backport 1.31-strict] fix: ensure nf_conntrack module loaded for kubelite. #4731

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13 changes: 13 additions & 0 deletions microk8s-resources/wrappers/run-kubelite-with-args
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Original file line number Diff line number Diff line change
Expand Up @@ -204,6 +204,19 @@ then
fi
fi

# kube-proxy reads some values related to the 'nf_conntrack' kernel
# module from procfs on startup, so we must ensure it is loaded:
if ! [ -f /proc/sys/net/netfilter/nf_conntrack_max ]
then
if /sbin/modprobe nf_conntrack || modprobe nf_conntrack
then
echo "Successfully loaded nf_conntrack module."
else
echo -n "Failed to load nf_conntrack kernel module. "
echo "ProxyServer will fail to start until it's loaded."
fi
fi

# on lxc containers do not try to change the conntrack configuration
# see https://github.com/canonical/microk8s/issues/1438
if grep -E lxc /proc/1/environ &&
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