37 lines
1.4 KiB
Bash
Executable File
37 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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# This script should be run as a one-time fix DURING an upgrade of
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# "vanilla" postgres to patroni (in either a single or HA multi-replica
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# configuration).
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#
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# This addresses an issue where the previous version of the chart had a
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# service-managed `endpoints` object, while patroni needs to manage its
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# own kubernetes `endpoints`. Patroni won't successfully manage
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# (i.e. apply annotation to, etc) the postgresql endpoints until the
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# service-managed endpoints are out of the way; however deletion of the
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# postgresql endpoints must be done with care during an upgrade.
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#
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# This script watches for the right moment and deletes the endpoints.
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export KUBECONFIG=${KUBECONFIG:-"/etc/kubernetes/admin.conf"}
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while true; do
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echo "Checking to see if patroni is deployed..."
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# Wait for the patroni-based chart to get deployed
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if [ $(kubectl describe pod -n ucp postgresql-0 | grep -c "patroni") -gt 0 ]; then
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echo 'Detected that patroni is deployed'
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# The port name used by the single-node postgres chart is "db",
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# while the new port name is "postgres"
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FIRST_PORT_NAME=$(kubectl get -n ucp endpoints postgresql -o jsonpath='{.subsets[0].ports[0].name}')
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if [ "x${FIRST_PORT_NAME}" == "xdb" ]; then
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echo "matched the old endpoints: deleting old postgresql endpoints"
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kubectl delete endpoints -n ucp postgresql
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echo "done."
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exit 0
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fi
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fi
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sleep 5
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done
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