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Monitor OpenSearch clusters through a relay agent - #150
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The OpenSearch plugin was a cloud-only wrapper around _search, built before the build-plugin conventions existed. It could not reach the private clusters most OpenSearch users run, imported nothing, shipped no dashboards and had no config validation, so bad credentials saved silently. The plugin is now hybrid, so the existing cloud plugin is upgraded in place and an on-prem variant runs through a relay agent. It imports nodes and indices and adds cluster, node and index monitoring with an overview dashboard and per-object perspectives. API key authentication is new for OpenSearch 3.7 and later. The custom certificate checkbox gives way to the platform's own toggle, which uses the same config key. Optional OpenTelemetry service discovery imports a Service for each service writing logs, with environments, Kubernetes namespaces and deployments as multi-value properties. The service log streams read those back onto their rows so tiles can filter by them. Pods were left out deliberately because they churn far faster than the 12-hour import. The search stream keeps its name, parameters and output for existing tiles. It now handles keyed buckets and fields results, both of which previously broke, and gains an optional time field. The rule of returning the last aggregation in the response is kept on purpose: OpenSearch places pipeline aggregations last, so choosing by request order would have broken them. Base config expressions avoid backslashes, because the platform strips them before evaluation; an escaped regex there broke the URL on the relay agent. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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The title clearly summarizes the main changes: OpenSearch cluster monitoring and relay-agent support. It is concise and specific. |
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Inline comments:
Review comments at @plugins/OpenSearch/v1/configValidation.json:
- Line 14: Update the cluster-health error message in the config validation and
the corresponding claim in the OpenSearch v1 README to avoid asserting that
users can search without a search check; state that search requires separate
index permissions, or add an index-search validation and report its result.
Review comments at @plugins/OpenSearch/v1/dataStreams/scripts/search.js:
- Around line 28-32: Update the `agg.value` check in the aggregation result
handling to test whether `value` exists on `agg`, so zero and null metric values
use the normalized `[{ value: agg.value }]` result shape instead of falling
through to `[agg]`.
Review comments at
@plugins/OpenSearch/v1/dataStreams/scripts/serviceLogVolume.js:
- Line 8: Normalize timestamps to ISO 8601 in both affected scripts: in
serviceLogVolume.js (line 8), convert the numeric aggregation bucket key to an
ISO 8601 string instead of using key_as_string; in serviceLogs.js (line 28),
convert numeric _source timestamps to ISO 8601 while preserving valid string
timestamps.
Review comments at @plugins/OpenSearch/v1/defaultContent/overview.dash.json:
- Around line 227-228: Update the `indices` tile description from “Open
non-system indices” to “Non-system indices” and the documents tile description
from “Documents across all open indices” to “Documents across all non-system
indices” in the overview dashboard.
Review comments at @plugins/OpenSearch/v1/ui.json:
- Line 10: Update the OpenSearch URL validation pattern in the ui.json value to
accept only HTTPS URLs, since metadata.json configures credentials; do not allow
HTTP unless the complete credential-bearing connection has verified transport
protection.
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📒 Files selected for processing: 30
plugins/OpenSearch/v1/README.mdplugins/OpenSearch/v1/configValidation.jsonplugins/OpenSearch/v1/custom_types.jsonplugins/OpenSearch/v1/dataStreams/clusterHealth.jsonplugins/OpenSearch/v1/dataStreams/clusterInfo.jsonplugins/OpenSearch/v1/dataStreams/documentCount.jsonplugins/OpenSearch/v1/dataStreams/indexNames.jsonplugins/OpenSearch/v1/dataStreams/indices.jsonplugins/OpenSearch/v1/dataStreams/nodes.jsonplugins/OpenSearch/v1/dataStreams/scripts/indexNames.jsplugins/OpenSearch/v1/dataStreams/scripts/nodes.jsplugins/OpenSearch/v1/dataStreams/scripts/search.jsplugins/OpenSearch/v1/dataStreams/scripts/serviceLogVolume.jsplugins/OpenSearch/v1/dataStreams/scripts/serviceLogs.jsplugins/OpenSearch/v1/dataStreams/scripts/services.jsplugins/OpenSearch/v1/dataStreams/search.jsonplugins/OpenSearch/v1/dataStreams/serviceLogVolume.jsonplugins/OpenSearch/v1/dataStreams/serviceLogs.jsonplugins/OpenSearch/v1/dataStreams/services.jsonplugins/OpenSearch/v1/defaultContent/index.dash.jsonplugins/OpenSearch/v1/defaultContent/manifest.jsonplugins/OpenSearch/v1/defaultContent/node.dash.jsonplugins/OpenSearch/v1/defaultContent/overview.dash.jsonplugins/OpenSearch/v1/defaultContent/scopes.jsonplugins/OpenSearch/v1/defaultContent/service.dash.jsonplugins/OpenSearch/v1/docs/README.mdplugins/OpenSearch/v1/docs/setup.mdplugins/OpenSearch/v1/indexDefinitions/default.jsonplugins/OpenSearch/v1/metadata.jsonplugins/OpenSearch/v1/ui.json
💤 Files with no reviewable changes: 2
- plugins/OpenSearch/v1/README.md
- plugins/OpenSearch/v1/docs/setup.md
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Review feedback on the OpenSearch plugin found several rough edges. A single-value metric of zero, or null when no documents match, fell through the truthiness check and came back in a different row shape from every other value. Testing for the property instead gives tiles bound to the value column the same shape every time. The service streams now build timestamps from the numeric bucket key or epoch values rather than trusting key_as_string, which follows the field's mapping format and is not guaranteed to be ISO 8601. The monitoring check no longer claims search works, since neither setup check tests it, and overview descriptions no longer say "open" indices now that closed indices are included. HTTPS is not enforced, because clusters without the Security plugin are commonly reached over plain HTTP through a relay agent, and the URL field's validation cannot depend on the chosen auth mode. Instead the credential sections warn that http sends credentials unencrypted. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
🧩 Plugin PR Summary📦 Modified Plugins
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clarkd
approved these changes
Oct 16, 2026
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📋 Summary
Brings the OpenSearch plugin up to the current build-plugin standard and makes it hybrid, so it can reach private clusters through a relay agent.
Until now the plugin was a thin wrapper around
_search. This adds cluster, node and index monitoring with imported objects and out-of-the-box dashboards, optional OpenTelemetry service discovery from logs, API key authentication, and fixes to the existing search stream.Hybrid and connection
typeis nowhybrid. Deploying upgrades the existing cloud plugin in place and adds an on-prem variant for relay agents.schemaVersionis now 2.1, with keywords,objectTypes, a corrected documentation link and a description of what users can monitor.Authentication and setup
Authorization: ApiKey os_…), alongside username/password and no authentication.configValidation.json: a required connect-and-authenticate check, plus a warning-only check for cluster monitoring permissions, so search-only users can still save.Monitoring (new)
indiceslookup is reworked into a visible stats stream.rolesis a multi-value property._catrequests ask for JSON explicitly; previously they only returned JSON when theAcceptheader happened to trigger it. System and hidden indices are excluded.ignore_unavailable, so a deleted daily index doesn't fail the stream.Search fixes and additions (
searchkeeps its name and itsindexandqueryparameters)filters) returned an object instead of rows.fields,docvalue_fieldsandscript_fieldsresults produced empty rows.keyed: falsenow return rows.bucketTimetimestamp column._id,_indexand_scorecolumns.OpenTelemetry services (new, optional)
ss4o_logs-*,otel-logs-*,resource.service.name.keyword,@timestamp,severity.number).environments,k8sNamespacesandk8sDeploymentsas multi-value properties.Content and docs
custom_types.json.docs/setup.mdand the rootREADME.mdare merged into a completedocs/README.md.🔗 Related issue(s)
None.
🧩 Plugin details
plugins/OpenSearch/v1), 1.0.4 → 1.1.0🧪 Testing
Tested against a live, private OpenSearch 3.7.0 cluster running in Kubernetes, with no Security plugin, reached through a relay agent in the same cluster using the on-prem variant, on a dev SquaredUp tenant.
Authorization: ApiKey <key>, and a pastedApiKeyprefix is normalised.Basicheader.Authorizationheader.bucketTime.keyed: falsepercentiles,fieldsand pipeline aggregations (amax_bucketlisted first) all work.Not tested:
readallandreadall_and_monitorpermission behaviour is untested. API key and basic auth were verified only at the header level.Does this PR introduce any breaking changes?
searchkeeps its name, parameters and output for existing request bodies. The new search columns are additive and hidden by default. The removedindiceslookup stream was hidden and fed only the index picker. Saved certificate settings carry over to the platform toggle. Switching tohybridupgrades the existing cloud plugin in place.📚 Documentation
✅ Checklist
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