diff --git a/qa/multi-cluster-search/src/test/resources/rest-api-spec/test/multi_cluster/100_tsdb.yml b/qa/multi-cluster-search/src/test/resources/rest-api-spec/test/multi_cluster/100_tsdb.yml
new file mode 100644
index 000000000000..1c7d4aeee8a8
--- /dev/null
+++ b/qa/multi-cluster-search/src/test/resources/rest-api-spec/test/multi_cluster/100_tsdb.yml
@@ -0,0 +1,95 @@
+---
+setup:
+  # Create a local tsdb index with a tsid the doesn't overlap with the remote cluster.
+  - skip:
+      version: " - 7.99.99"
+      reason: introduced in 8.0.0
+
+  - do:
+      indices.create:
+        index: tsdb
+        body:
+          settings:
+            index:
+              mode: time_series
+              number_of_replicas: 0
+              number_of_shards: 2
+          mappings:
+            properties:
+              "@timestamp":
+                type: date
+              metricset:
+                type: keyword
+                time_series_dimension: true
+              k8s:
+                properties:
+                  pod:
+                    properties:
+                      uid:
+                        type: keyword
+                        time_series_dimension: true
+                      name:
+                        type: keyword
+                      ip:
+                        type: ip
+                      network:
+                        properties:
+                          tx:
+                            type: long
+                          rx:
+                            type: long
+
+  - do:
+      bulk:
+        refresh: true
+        index: tsdb
+        body:
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:03.142Z", "metricset": "pod", "k8s": {"pod": {"name": "cow", "uid":"1c4fc7b8-93b7-4ba8-b609-2a48af2f8e39", "ip": "10.10.55.4", "network": {"tx": 1434521831, "rx": 530575198}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:23.142Z", "metricset": "pod", "k8s": {"pod": {"name": "cow", "uid":"1c4fc7b8-93b7-4ba8-b609-2a48af2f8e39", "ip": "10.10.55.4", "network": {"tx": 1434577921, "rx": 530600088}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:53.142Z", "metricset": "pod", "k8s": {"pod": {"name": "cow", "uid":"1c4fc7b8-93b7-4ba8-b609-2a48af2f8e39", "ip": "10.10.55.4", "network": {"tx": 1434587694, "rx": 530604797}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:51:03.142Z", "metricset": "pod", "k8s": {"pod": {"name": "cow", "uid":"1c4fc7b8-93b7-4ba8-b609-2a48af2f8e39", "ip": "10.10.55.4", "network": {"tx": 1434595272, "rx": 530605511}}}}'
+
+---
+teardown:
+  - skip:
+      version: " - 7.99.99"
+      reason: introduced in 8.0.0
+
+  - do:
+      indices.delete:
+        index: tsdb
+        ignore_unavailable: true
+
+---
+aggregate tsid:
+  - skip:
+      version: " - 7.99.99"
+      reason: introduced in 8.0.0
+
+  - do:
+      search:
+        index: tsdb,my_remote_cluster:tsdb
+        body:
+          size: 0
+          runtime_mappings: # TODO replace this with tsid once it is generated
+            tsid:
+              type: keyword
+              script: emit('k8s.pod.uid:' + doc['k8s.pod.uid'].value + ',metricset:' + doc['metricset'].value)
+          aggs:
+            tsids:
+              terms:
+                field: tsid
+                order:
+                  _key: asc
+
+  - match: {hits.total.value: 12}
+  - match: {aggregations.tsids.buckets.0.key: 'k8s.pod.uid:1c4fc7b8-93b7-4ba8-b609-2a48af2f8e39,metricset:pod'}
+  - match: {aggregations.tsids.buckets.0.doc_count: 4}
+  - match: {aggregations.tsids.buckets.1.key: 'k8s.pod.uid:947e4ced-1786-4e53-9e0c-5c447e959507,metricset:pod'}
+  - match: {aggregations.tsids.buckets.1.doc_count: 4}
+  - match: {aggregations.tsids.buckets.2.key: 'k8s.pod.uid:df3145b3-0563-4d3b-a0f7-897eb2876ea9,metricset:pod'}
+  - match: {aggregations.tsids.buckets.2.doc_count: 4}
diff --git a/qa/multi-cluster-search/src/test/resources/rest-api-spec/test/remote_cluster/10_basic.yml b/qa/multi-cluster-search/src/test/resources/rest-api-spec/test/remote_cluster/10_basic.yml
index 8f9b0ce1545b..5aa5bd659a1c 100644
--- a/qa/multi-cluster-search/src/test/resources/rest-api-spec/test/remote_cluster/10_basic.yml
+++ b/qa/multi-cluster-search/src/test/resources/rest-api-spec/test/remote_cluster/10_basic.yml
@@ -1,5 +1,5 @@
 ---
-"Index data and search on the old cluster":
+"Index data and search on the remote cluster":
   - skip:
       features: allowed_warnings
 
@@ -152,3 +152,65 @@
   - match: { hits.total: 2 }
   - match: { hits.hits.0._source.filter_field: 1 }
   - match: { hits.hits.0._index: "test_index" }
+
+---
+tsdb:
+  - skip:
+      version: " - 7.99.99"
+      reason: introduced in 8.0.0
+
+  - do:
+      indices.create:
+        index: tsdb
+        body:
+          settings:
+            index:
+              mode: time_series
+              number_of_replicas: 0
+              number_of_shards: 2
+          mappings:
+            properties:
+              "@timestamp":
+                type: date
+              metricset:
+                type: keyword
+                time_series_dimension: true
+              k8s:
+                properties:
+                  pod:
+                    properties:
+                      uid:
+                        type: keyword
+                        time_series_dimension: true
+                      name:
+                        type: keyword
+                      ip:
+                        type: ip
+                      network:
+                        properties:
+                          tx:
+                            type: long
+                          rx:
+                            type: long
+
+  - do:
+      bulk:
+        refresh: true
+        index: tsdb
+        body:
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:04.467Z", "metricset": "pod", "k8s": {"pod": {"name": "cat", "uid":"947e4ced-1786-4e53-9e0c-5c447e959507", "ip": "10.10.55.1", "network": {"tx": 2001818691, "rx": 802133794}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:24.467Z", "metricset": "pod", "k8s": {"pod": {"name": "cat", "uid":"947e4ced-1786-4e53-9e0c-5c447e959507", "ip": "10.10.55.1", "network": {"tx": 2005177954, "rx": 801479970}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:44.467Z", "metricset": "pod", "k8s": {"pod": {"name": "cat", "uid":"947e4ced-1786-4e53-9e0c-5c447e959507", "ip": "10.10.55.1", "network": {"tx": 2006223737, "rx": 802337279}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:51:04.467Z", "metricset": "pod", "k8s": {"pod": {"name": "cat", "uid":"947e4ced-1786-4e53-9e0c-5c447e959507", "ip": "10.10.55.2", "network": {"tx": 2012916202, "rx": 803685721}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:03.142Z", "metricset": "pod", "k8s": {"pod": {"name": "dog", "uid":"df3145b3-0563-4d3b-a0f7-897eb2876ea9", "ip": "10.10.55.3", "network": {"tx": 1434521831, "rx": 530575198}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:23.142Z", "metricset": "pod", "k8s": {"pod": {"name": "dog", "uid":"df3145b3-0563-4d3b-a0f7-897eb2876ea9", "ip": "10.10.55.3", "network": {"tx": 1434577921, "rx": 530600088}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:50:53.142Z", "metricset": "pod", "k8s": {"pod": {"name": "dog", "uid":"df3145b3-0563-4d3b-a0f7-897eb2876ea9", "ip": "10.10.55.3", "network": {"tx": 1434587694, "rx": 530604797}}}}'
+          - '{"index": {}}'
+          - '{"@timestamp": "2021-04-28T18:51:03.142Z", "metricset": "pod", "k8s": {"pod": {"name": "dog", "uid":"df3145b3-0563-4d3b-a0f7-897eb2876ea9", "ip": "10.10.55.3", "network": {"tx": 1434595272, "rx": 530605511}}}}'