K8SPG-708 replace ready/live probe http check with custom command, change pg entrypoint (#1099)

Author: gkech

build/crd/crunchy/generated/postgres-operator.crunchydata.com_postgresclusters.yaml

@@ -63,6 +63,9 @@ COPY --from=go_builder /usr/local/bin/pgbackrest /usr/local/bin/
 COPY --from=go_builder /licenses /licenses
 COPY build/postgres-operator/install-extensions.sh /usr/local/bin
 COPY build/postgres-operator/init-entrypoint.sh /usr/local/bin
+COPY build/postgres-operator/postgres-entrypoint.sh /usr/local/bin
+COPY build/postgres-operator/postgres-liveness-check.sh /usr/local/bin
+COPY build/postgres-operator/postgres-readiness-check.sh /usr/local/bin
 COPY hack/tools/queries /opt/crunchy/conf
 
 RUN chgrp -R 0 /opt/crunchy/conf && chmod -R g=u opt/crunchy/conf

build/crd/percona/generated/pgv2.percona.com_perconapgclusters.yaml

@@ -6,3 +6,6 @@ set -o xtrace
 CRUNCHY_BINDIR="/opt/crunchy"
 
 install -o "$(id -u)" -g "$(id -g)" -m 0755 -D "/usr/local/bin/pgbackrest" "${CRUNCHY_BINDIR}/bin/pgbackrest"
+install -o "$(id -u)" -g "$(id -g)" -m 0755 -D "/usr/local/bin/postgres-entrypoint.sh" "${CRUNCHY_BINDIR}/bin/postgres-entrypoint.sh"
+install -o "$(id -u)" -g "$(id -g)" -m 0755 -D "/usr/local/bin/postgres-liveness-check.sh" "${CRUNCHY_BINDIR}/bin/postgres-liveness-check.sh"
+install -o "$(id -u)" -g "$(id -g)" -m 0755 -D "/usr/local/bin/postgres-readiness-check.sh" "${CRUNCHY_BINDIR}/bin/postgres-readiness-check.sh"

build/postgres-operator/Dockerfile

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# /pgdata/ is already mounted to the pg database container with rw permissions
+recovery_file='/pgdata/sleep-forever'
+if [[ -f ${recovery_file} ]]; then
+	set +o xtrace
+	echo "The $recovery_file file is detected, node entered an infinite sleep"
+	echo "If you want to exit from the infinite sleep, remove the $recovery_file file"
+
+	if [[ ! -d /tmp/postgres ]]; then
+		mkdir -p /tmp/postgres
+	fi
+
+	while [ -f "${recovery_file}" ]; do
+		sleep 3
+	done
+	exit 0
+fi
+
+exec "$@"

build/postgres-operator/init-entrypoint.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+PATRONI_PORT=8008
+PATRONI_HOST=localhost
+
+# /pgdata/ is already mounted to the pg database container with rw permissions
+recovery_file='/pgdata/sleep-forever'
+if [ -f "${recovery_file}" ]; then
+	set +o xtrace
+	echo "The $recovery_file file is detected, node entered an infinite sleep"
+	echo "If you want to exit from the infinite sleep, remove the $recovery_file file"
+	exit 0
+fi
+
+response=$(curl -s -o /dev/null -w "%{http_code}" -k "https://${PATRONI_HOST}:${PATRONI_PORT}/liveness")
+
+if [[ $response -eq 200 ]]; then
+	exit 0
+fi
+exit 1

build/postgres-operator/postgres-entrypoint.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+PATRONI_PORT=8008
+PATRONI_HOST=localhost
+
+response=$(curl -s -o /dev/null -w "%{http_code}" -k "https://${PATRONI_HOST}:${PATRONI_PORT}/readiness")
+
+if [[ $response -eq 200 ]]; then
+	exit 0
+fi
+exit 1