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Rafael Ríos SaavedraandGitHub
e9c2d741ee
* [bitnami/postgresql-ha] Mitigate brain split situations Signed-off-by: Rafael Rios Saavedra <rafael.rios.saavedra@gmail.com> * [bitnami/postgresql-ha] Mitigate brain split situations Signed-off-by: Rafael Rios Saavedra <rafael.rios.saavedra@gmail.com>
73 lines
2.3 KiB
YAML
73 lines
2.3 KiB
YAML
apiVersion: v1
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kind: ConfigMap
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metadata:
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name: {{ printf "%s-hooks-scripts" (include "postgresql-ha.postgresql" .) }}
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labels: {{- include "common.labels.standard" . | nindent 4 }}
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app.kubernetes.io/component: postgresql
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{{- if .Values.commonLabels }}
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{{- include "common.tplvalues.render" ( dict "value" .Values.commonLabels "context" $ ) | nindent 4 }}
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{{- end }}
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{{- if .Values.commonAnnotations }}
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annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
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{{- end }}
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data:
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pre-stop.sh: |-
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#!/bin/bash
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set -o errexit
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set -o pipefail
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set -o nounset
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# Debug section
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exec 3>&1
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exec 4>&2
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# Load Libraries
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. /opt/bitnami/scripts/liblog.sh
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. /opt/bitnami/scripts/libpostgresql.sh
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. /opt/bitnami/scripts/librepmgr.sh
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# Load PostgreSQL & repmgr environment variables
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. /opt/bitnami/scripts/postgresql-env.sh
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# Auxiliary functions
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is_new_primary_ready() {
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return_value=1
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currenty_primary_node="$(repmgr_get_primary_node)"
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currenty_primary_host="$(echo $currenty_primary_node | awk '{print $1}')"
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info "$currenty_primary_host != $REPMGR_NODE_NETWORK_NAME"
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if [[ $(echo $currenty_primary_node | wc -w) -eq 2 ]] && [[ "$currenty_primary_host" != "$REPMGR_NODE_NETWORK_NAME" ]]; then
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info "New primary detected, leaving the cluster..."
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return_value=0
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else
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info "Waiting for a new primary to be available..."
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fi
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return $return_value
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}
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export MODULE="pre-stop-hook"
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if [[ "${BITNAMI_DEBUG}" == "true" ]]; then
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info "Bash debug is on"
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else
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info "Bash debug is off"
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exec 1>/dev/null
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exec 2>/dev/null
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fi
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postgresql_enable_nss_wrapper
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# Prepare env vars for managing roles
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readarray -t primary_node < <(repmgr_get_upstream_node)
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primary_host="${primary_node[0]}"
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# Stop postgresql for graceful exit.
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postgresql_stop
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if [[ -z "$primary_host" ]] || [[ "$primary_host" == "$REPMGR_NODE_NETWORK_NAME" ]]; then
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info "Primary node need to wait for a new primary node before leaving the cluster"
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retry_while is_new_primary_ready 10 5
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else
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info "Standby node doesn't need to wait, leaving the cluster."
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fi
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