harbor/make/photon/db/docker-healthcheck.sh

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#!/bin/bash
set -eo pipefail
h="$(hostname -i || echo '127.0.0.1')"
host="${h%%[[:space:]]*}" #remove the trailing space
user="${POSTGRES_USER:-postgres}"
db="${POSTGRES_DB:-$POSTGRES_USER}"
export PGPASSWORD="${POSTGRES_PASSWORD:-}"
args=(
# force postgres to not use the local unix socket (test "external" connectibility)
--host "$host"
--username "$user"
--dbname "$db"
--quiet --no-align --tuples-only
)
if select="$(echo 'SELECT 1' | psql "${args[@]}")" && [ "$select" = '1' ]; then
exit 0
fi
exit 1