diff --git a/compose/opennms/env/opennms.env b/compose/opennms/env/opennms.env
new file mode 100644
index 0000000..66d6fa8
--- /dev/null
+++ b/compose/opennms/env/opennms.env
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+# Environment variables for OpenNMS database connection
+OPENNMS_DBNAME=opennms
+OPENNMS_DBUSER=opennms
+OPENNMS_DBPASS=opennms
+OPENNMS_HOME=/opt/opennms
+OPENNMS_DB_CONFIG=/opt/opennms/etc/opennms-datasources.xml
+opennms.rtc.event.proxy.host=0.0.0.0
+