diff --git a/develop/buildkite/docker-compose-os2.yml b/develop/buildkite/docker-compose-os2.yml
new file mode 100644
index 00000000000..27cfa16fefd
--- /dev/null
+++ b/develop/buildkite/docker-compose-os2.yml
@@ -0,0 +1,50 @@
+version: "3.5"
+
+services:
+  cassandra:
+    image: cassandra:3.11
+    networks:
+      services-network:
+        aliases:
+          - cassandra
+
+  opensearch:
+    image: opensearchproject/opensearch:2.6.0
+    networks:
+      services-network:
+        aliases:
+          - opensearch
+    environment:
+      - discovery.type=single-node
+      - plugins.security.disabled=true
+
+  integration-test-cassandra:
+    build:
+      context: ../..
+      dockerfile: ./develop/buildkite/Dockerfile
+    environment:
+      - "CASSANDRA_SEEDS=cassandra"
+      - "ES_SEEDS=opensearch"
+      - "ES_VERSION=v8"
+      - "PERSISTENCE_TYPE=nosql"
+      - "PERSISTENCE_DRIVER=cassandra"
+      - "TEMPORAL_VERSION_CHECK_DISABLED=1"
+      - BUILDKITE_AGENT_ACCESS_TOKEN
+      - BUILDKITE_JOB_ID
+      - BUILDKITE_BUILD_ID
+      - BUILDKITE_BUILD_NUMBER
+    depends_on:
+      - cassandra
+      - opensearch
+    volumes:
+      - ../..:/temporal
+      - /usr/bin/buildkite-agent:/usr/bin/buildkite-agent
+    networks:
+      services-network:
+        aliases:
+          - integration-test
+
+networks:
+  services-network:
+    name: services-network
+    driver: bridge
diff --git a/develop/buildkite/pipeline.yml b/develop/buildkite/pipeline.yml
index 70ca28d6477..ae5bb069a0e 100644
--- a/develop/buildkite/pipeline.yml
+++ b/develop/buildkite/pipeline.yml
@@ -65,6 +65,21 @@ steps:
           run: integration-test-cassandra
           config: ./develop/buildkite/docker-compose-es8.yml
 
+  - label: ":golang: functional test with cassandra (OpenSearch 2)"
+    agents:
+      queue: "default"
+      docker: "*"
+    command: "make functional-test-coverage"
+    artifact_paths:
+      - ".coverage/*.out"
+    retry:
+      automatic:
+        limit: 1
+    plugins:
+      - docker-compose#v3.8.0:
+          run: integration-test-cassandra
+          config: ./develop/buildkite/docker-compose-os2.yml
+
   - label: ":golang: functional xdc test with cassandra"
     agents:
       queue: "default"
diff --git a/develop/buildkite/scripts/coverage-report.sh b/develop/buildkite/scripts/coverage-report.sh
index 4dc68f0cb23..be158ba83bb 100755
--- a/develop/buildkite/scripts/coverage-report.sh
+++ b/develop/buildkite/scripts/coverage-report.sh
@@ -10,6 +10,10 @@ buildkite-agent artifact download ".coverage/integration_coverprofile.out" . --s
 buildkite-agent artifact download ".coverage/functional_cassandra_coverprofile.out" . --step ":golang: functional test with cassandra (ES8)" --build "${BUILDKITE_BUILD_ID}"
 mv ./.coverage/functional_cassandra_coverprofile.out ./.coverage/functional_cassandra_es8_coverprofile.out
 
+# OpenSearch 2.
+buildkite-agent artifact download ".coverage/functional_cassandra_coverprofile.out" . --step ":golang: functional test with cassandra (OpenSearch 2)" --build "${BUILDKITE_BUILD_ID}"
+mv ./.coverage/functional_cassandra_coverprofile.out ./.coverage/functional_cassandra_os2_coverprofile.out
+
 # Cassandra.
 buildkite-agent artifact download ".coverage/functional_cassandra_coverprofile.out" . --step ":golang: functional test with cassandra" --build "${BUILDKITE_BUILD_ID}"
 buildkite-agent artifact download ".coverage/functional_xdc_cassandra_coverprofile.out" . --step ":golang: functional xdc test with cassandra" --build "${BUILDKITE_BUILD_ID}"