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cni-server: set sysctl variable net.ipv4.ip_no_pmtu_disc to 1 by default #3504

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Dec 11, 2023
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cni-server: set sysctl variable net.ipv4.ip_no_pmtu_disc to 1 by default #3504

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2 changes: 2 additions & 0 deletions dist/images/start-cniserver.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ set -euo pipefail
CNI_SOCK=/run/openvswitch/kube-ovn-daemon.sock
OVS_SOCK=/run/openvswitch/db.sock
ENABLE_SSL=${ENABLE_SSL:-false}
SYSCTL_IPV4_IP_NO_PMTU_DISC=${SYSCTL_IPV4_IP_NO_PMTU_DISC:-1}
SYSCTL_NF_CONNTRACK_TCP_BE_LIBERAL=${SYSCTL_NF_CONNTRACK_TCP_BE_LIBERAL:-1}
SYSCTL_IPV4_NEIGH_DEFAULT_GC_THRESH=${SYSCTL_IPV4_NEIGH_DEFAULT_GC_THRESH:-"1024 2048 4096"}

Expand Down Expand Up @@ -53,6 +54,7 @@ gc_thresh3=$(echo "$SYSCTL_IPV4_NEIGH_DEFAULT_GC_THRESH" | awk '{print $3}')
set_sysctl net.ipv4.neigh.default.gc_thresh1 $gc_thresh1
set_sysctl net.ipv4.neigh.default.gc_thresh2 $gc_thresh2
set_sysctl net.ipv4.neigh.default.gc_thresh3 $gc_thresh3
set_sysctl net.ipv4.ip_no_pmtu_disc $SYSCTL_IPV4_IP_NO_PMTU_DISC
set_sysctl net.netfilter.nf_conntrack_tcp_be_liberal $SYSCTL_NF_CONNTRACK_TCP_BE_LIBERAL

./kube-ovn-daemon --ovs-socket=${OVS_SOCK} --bind-socket=${CNI_SOCK} "$@"
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