Update .env to accommodate ELK stack

.env

@@ -15,6 +15,10 @@ OPENSEARCH_IMAGE=opensearchproject/opensearch:2.16.0
 POSTGRES_IMAGE=postgres:16.4
 PROMETHEUS_IMAGE=quay.io/prometheus/prometheus:v2.54.1
 VALKEY_IMAGE=valkey/valkey:8.0-alpine
+ELASTICSEARCH_IMAGE=elastic/elasticsearch:7.17.24
+LOGSTASH_IMAGE=elastic/logstash:7.17.24
+KIBANA_IMAGE=elastic/kibana:7.17.24
+
 # must also update the version arg in ./test/tracetesting/Dockerfile
 TRACETEST_IMAGE=kubeshop/tracetest:v1.5.2
 
@@ -153,3 +157,21 @@ JAEGER_SERVICE_HOST=jaeger
 PROMETHEUS_SERVICE_PORT=9090
 PROMETHEUS_SERVICE_HOST=prometheus
 PROMETHEUS_ADDR=${PROMETHEUS_SERVICE_HOST}:${PROMETHEUS_SERVICE_PORT}
+
+#Elasticsearch
+
+ELASTICSEARCH_SERVICE_PORT=9200
+ELASTICSEARCH_SERVICE_HOST=elasticsearch
+ELASTICSEARCH_ADDR=${ELASTICSEARCH_SERVICE_HOST}:${ELASTICSEARCH_SERVICE_PORT}
+
+#Logstash
+
+LOGSTASH_SERVICE_PORT=5044
+LOGSTASH_SERVICE_HOST=logstash
+LOGSTASH_ADDR=${LOGSTASH_SERVICE_HOST}:${LOGSTASH_SERVICE_PORT}
+
+#Kibana
+
+KIBANA_SERVICE_PORT=5601
+KIBANA_SERVICE_HOST=kibana
+KIBANA_ADDR=${KIBANA_SERVICE_HOST}:${KIBANA_SERVICE_PORT}