5358aed591
Update liveness probe script to accept pods either sending or receiving a SST, and avoid killing them. Change-Id: I4ad95c45a7ab7e5e1cec2b4696671b6055cc10e7
69 lines
1.8 KiB
Smarty
69 lines
1.8 KiB
Smarty
#!/usr/bin/env bash
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/}}
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set -e
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MYSQL="mysql \
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--defaults-file=/etc/mysql/admin_user.cnf \
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--host=localhost \
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{{- if .Values.manifests.certificates }}
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--ssl-verify-server-cert=false \
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--ssl-ca=/etc/mysql/certs/ca.crt \
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--ssl-key=/etc/mysql/certs/tls.key \
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--ssl-cert=/etc/mysql/certs/tls.crt \
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{{- end }}
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--connect-timeout 2"
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mysql_status_query () {
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STATUS=$1
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$MYSQL -e "show status like \"${STATUS}\"" | \
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awk "/${STATUS}/ { print \$NF; exit }"
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}
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{{- if eq (int .Values.pod.replicas.server) 1 }}
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if ! $MYSQL -e 'select 1' > /dev/null 2>&1 ; then
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exit 1
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fi
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{{- else }}
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if [ -f /var/lib/mysql/sst_in_progress ]; then
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# SST in progress, with this node receiving a snapshot.
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# MariaDB won't be up yet; avoid killing.
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exit 0
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fi
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if [ "x$(mysql_status_query wsrep_ready)" != "xON" ]; then
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# WSREP says the node can receive queries
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exit 1
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fi
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if [ "x$(mysql_status_query wsrep_connected)" != "xON" ]; then
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# WSREP connected
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exit 1
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fi
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if [ "x$(mysql_status_query wsrep_cluster_status)" != "xPrimary" ]; then
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# Not in primary cluster
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exit 1
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fi
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wsrep_local_state_comment=$(mysql_status_query wsrep_local_state_comment)
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if [ "x${wsrep_local_state_comment}" != "xSynced" ] && [ "x${wsrep_local_state_comment}" != "xDonor/Desynced" ]; then
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# WSREP not synced or not sending SST
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exit 1
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fi
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{{- end }}
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