6ca136bae4
When the ingress pod (in routed mode, using a managed vip) moves from one host to another, it is sometimes observed that: 1. the vip interface is not removed on the original host, and 2. in some network topologies, the switch fabric is unable to find the new pod. This change updates the ingress deployment as follows: Adds a 5s sleep before the shutdown of the ingress container in order to allow the preStop action of the ingress-vip container to run completely. Updates the start action of the ingress-vip-init container to check if the vip is part of an existing connected subnet, and if so, sends a few gratuitous ARP messages to let the switch fabric to build its ARP cache. Change-Id: I784906865358566f42157dc2133569e4cb270cfa
63 lines
1.7 KiB
Smarty
63 lines
1.7 KiB
Smarty
#!/bin/bash
|
|
|
|
# Copyright 2018 The Openstack-Helm Authors.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
set -ex
|
|
|
|
COMMAND="${@:-start}"
|
|
|
|
function kernel_modules () {
|
|
chroot /mnt/host-rootfs modprobe dummy
|
|
}
|
|
|
|
function test_vip () {
|
|
ip addr show ${interface} | \
|
|
awk "/inet / && /${interface}/{print \$2 }" | \
|
|
awk -F '/' '{ print $1 }' | \
|
|
grep -q "${addr%/*}"
|
|
}
|
|
|
|
function start () {
|
|
ip link show ${interface} > /dev/null || ip link add ${interface} type dummy
|
|
if ! test_vip; then
|
|
ip addr add ${addr} dev ${interface}
|
|
fi
|
|
ip link set ${interface} up
|
|
garp_interface=$(ip route list match "${addr}" scope link | \
|
|
awk '$2 == "dev" { print $3; exit }')
|
|
if [ -n "${garp_interface}" ]; then
|
|
arping -U -c 3 -I "${garp_interface}" "${addr%/*}" || true
|
|
fi
|
|
}
|
|
|
|
function sleep () {
|
|
exec bash -c "while :; do sleep 2073600; done"
|
|
}
|
|
|
|
function stop () {
|
|
ip link show ${interface} > /dev/null || exit 0
|
|
if test_vip; then
|
|
ip addr del ${addr} dev ${interface}
|
|
fi
|
|
if [ "$(ip address show ${interface} | \
|
|
awk "/inet / && /${interface}/{print \$2 }" | \
|
|
wc -l)" -le "0" ]; then
|
|
ip link set ${interface} down
|
|
ip link del ${interface}
|
|
fi
|
|
}
|
|
|
|
$COMMAND
|