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sbrossie merged 1 commit into from
Jul 14, 2026
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Enhance launch script for multi-tier deployment. #688

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39 changes: 39 additions & 0 deletions userguide/aws/how-to-set-up-a-multi-tier-system.adoc
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Expand Up @@ -158,13 +158,16 @@ To configure the EC2 instances and establish their connection to the databases,
[source,bash]
----
#!/bin/bash
set -euo pipefail

db_host="<DB endpoint writer instance>"
db_port="<DB port>"
db_user="<DB username>"
db_password="<DB passwordd>"
kb_admin_password="<Kaui admin login password>"

KB_PLUGINS_TEMP_DIR="/var/lib/killbill/bundles/temp"

@sbrossie sbrossie Jul 14, 2026

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Do we typically use temp or tmp - does it matter?

@vnandwana vnandwana Jul 14, 2026

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This is a directory we create during AMI creation (we can give any name) -- https://github.com/killbill/killbill-cloud/blob/master/ansible/roles/killbill/tasks/plugins/kpm_plugin.yml#L10


cat << EOF >> /etc/environment
KB_org_killbill_dao_url=jdbc:mysql://$db_host:$db_port/killbill
KB_org_killbill_dao_user=$db_user
Expand All @@ -182,6 +185,42 @@ KAUI_DB_USERNAME=$db_user
KAUI_DB_PASSWORD=$db_password
KAUI_KILLBILL_URL=http://127.0.0.1:8080
EOF

echo "Waiting for plugin SQL files..."

for i in {1..60}; do
if ls ${KB_PLUGINS_TEMP_DIR}/*/*.sql >/dev/null 2>&1; then
break
fi

sleep 10
done

echo "Installing plugin DDLs..."

find "${KB_PLUGINS_TEMP_DIR}" \

@sbrossie sbrossie Jul 14, 2026

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Are we guarantee that all ddl files will be there - the loop wait for the first one if I understand correctly?

@vnandwana vnandwana Jul 14, 2026

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Ansible copies these DDL files during AMI creation: https://github.com/killbill/killbill-cloud/blob/master/ansible/roles/killbill/tasks/plugins/kpm_plugin.yml#L18. If the AMI is created successfully, these files should be present when the instance is launched.

-mindepth 2 \
-maxdepth 2 \
-name "*.sql" \
| sort \
| while read -r ddl_file; do

plugin_name=$(basename "$(dirname "$ddl_file")")

echo "Installing DDL for plugin: ${plugin_name}"
echo "Executing file: ${ddl_file}"

mysql \
--host="${db_host}" \
--port="${db_port}" \
--user="${db_user}" \
--password="${db_password}" \
killbill < "${ddl_file}"

echo "Completed plugin: ${plugin_name}"
done

echo "All plugin DDLs installed successfully"
----

In the above script, replace the value of `db_host` with the full name of the DB writer endpoint obtained from the Connectivity and Security panel, as indicated earlier. Be sure to specify the appropriate database port number (`3306` for MySQL or `5432` for PostgreSQL) by setting `db_port`. The `kb_admin_password` value will be utilized as the admin password for Kaui login.
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