From 6cd7d669c1fd4e03cf95e4a6832c561297405d6f Mon Sep 17 00:00:00 2001
From: Karan Sharma <hello@mrkaran.dev>
Date: Mon, 18 Oct 2021 10:08:02 +0530
Subject: [PATCH] fix: Add a check for existing docker db volume

Fixes https://github.com/knadh/listmonk/issues/517
---
 install-prod.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/install-prod.sh b/install-prod.sh
index 19ce5d4..0ff7437 100644
--- a/install-prod.sh
+++ b/install-prod.sh
@@ -44,6 +44,14 @@ check_dependencies() {
 	fi
 }
 
+check_existing_db_volume() {
+	info "checking for an existing docker db volume"
+	if docker volume inspect listmonk_listmonk-data >/dev/null 2>&1; then
+		error "listmonk-data volume already exists. Please use docker-compose down -v to remove old volumes for a fresh setup of PostgreSQL."
+		exit 1
+	fi
+}
+
 download() {
 	curl --fail --silent --location --output "$2" "$1"
 }
@@ -124,6 +132,7 @@ show_output(){
 
 
 check_dependencies
+check_existing_db_volume
 get_config
 get_containers
 modify_config