0982a823e1
Implements: blueprint rabbitmq-dns-discovery Some useful things to note: 1. This uses a StatefulSet instead of a Deployment. The reason for this is that when RabbitMQ uses DNS for peer discovery, the first thing it does when trying to join a node is attempt a reverse-dns lookup. This reverse lookup works when using a StatefulSet, but not a Deployment. 2. The RabbitMQ configuration was updated to use the new sysctl-style format. It seems that the new format is required to configure the new autoclustering features. Additionally, I found that this generate much clearer error messages than the straight erlang format. 3. I removed the `is-node-properly-clustered` test in the liveness and readiness probes. This probe isn't directly supported in 3.7.0, and it wasn't clear that a clustering check was appropriate for each node. Change-Id: Ieefbb2205bd77fbac04abcd051fb06fce62e8d97
96 lines
2.2 KiB
Smarty
96 lines
2.2 KiB
Smarty
#!/usr/bin/env bash
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# Copyright 2017 The Openstack-Helm Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This is taken from https://github.com/openstack/fuel-ccp-rabbitmq/blob/master/service/files/rabbitmq-check-helpers.sh.j2
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MARKER_PATH=/tmp/rabbit-startup-marker
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# How many seconds we give a node before successfull liveness checks
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# become mandatory.
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FRESH_NODE_TIMEOUT={{ .Values.probes_delay }}
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LP=""
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set-log-prefix() {
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LP="[${1:?}]"
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}
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log-it() {
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echo "$LP" "$@"
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}
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prepend-log-prefix() {
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awk -v lp="$LP" '{print lp " " $0}'
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}
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marker-state() {
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if [[ ! -f $MARKER_PATH ]]; then
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echo "missing"
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return 0
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fi
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local marker_time
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marker_time="$(cat $MARKER_PATH)"
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local end_of_fresh_time=$((FRESH_NODE_TIMEOUT + $marker_time))
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local now
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now=$(date +%s)
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if [[ $now -le $end_of_fresh_time ]]; then
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echo "fresh"
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return 0
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fi
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echo "stale"
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return 0
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}
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ping-node() {
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local result
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result="$(rabbitmqctl eval 'ok.' 2>&1)"
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if [[ "$result" == "ok" ]]; then
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return 0
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fi
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log-it "ping-node error:"
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echo "$result" | prepend-log-prefix
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return 1
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}
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is-node-booting() {
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local result
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result="$(rabbitmqctl eval 'is_pid(erlang:whereis(rabbit_boot)).' 2>&1)"
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case "$result" in
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true)
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return 0
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;;
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false)
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return 1
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;;
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*)
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log-it "is-node-booting error:"
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echo "$result" | prepend-log-prefix
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return 1
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;;
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esac
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}
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is-node-healthy() {
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local result
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result=$(rabbitmqctl node_health_check -t 30 2>&1)
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if [[ "$result" =~ "Health check passed" ]]; then
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return 0
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fi
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echo "$result" | prepend-log-prefix
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return 1
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}
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