signalfx/splunk-otel-collector v0.151.0 on GitHub

This Splunk OpenTelemetry Collector release includes changes from the opentelemetry-collector v0.151.0
and the opentelemetry-collector-contrib v0.151.0 releases where appropriate.

🛑 Breaking changes 🛑

(Splunk) installer: Replace default Windows MSI artifact download URL from dl.signalfx.com to dl.observability.splunkcloud.com in installer scripts. (#7440)
For legacy dl.signalfx.com URL override instructions, see the
0.150.0 → 0.151.0 upgrade guideline.
(Splunk) config: Update default configs to use canonical receiver names (fluent_forward, host_metrics) instead of legacy aliases (fluentforward, hostmetrics). (#7522)
The legacy aliases will be removed in a future release. Users relying on custom configs
with the old names should migrate to the canonical names before the aliases are removed.
(Splunk) config: All default configuration references to filelog receiver have been updated to file_log (#7484)
The filelog alias has been deprecated. Please update any existing references to file_log.
This is only relevant for users that have custom configuration dependent on the default config.
(Core) pkg/confighttp: Stabilize framedSnappy feature gate. (#15096)
(Contrib) exporter/signalfx: Default api_url and ingest_url values derived from realm now use *.observability.splunkcloud.com instead of *.signalfx.com. (#47670)
Explicit api_url and ingest_url settings are unchanged. Update network allowlists if they targeted only *.signalfx.com.
(Contrib) exporter/splunk_hec: Remove deprecated batcher config field. Use sending_queue::batch instead. (#47737)
(Contrib) pkg/translator/prometheus: Removes pkg.translator.prometheus.NormalizeName feature gate which has been stable for some time. (#47597)
(Contrib) processor/k8s_attributes: Disable otelcol.k8s.pod.association metric until pod_identifier attribute is properly calculated (#47669)
(Contrib) receiver/jaeger: Stabilize DisableRemoteSampling feature gate which has been in beta for over 2 years. (#47599)
(Contrib) receiver/prometheus: Remove receiver.prometheusreceiver.EnableNativeHistograms, receiver.prometheusreceiver.RemoveStartTimeAdjustment and receiver.prometheusreceiver.UseCreatedMetric feature gates. (#40606)
(Contrib) receiver/prometheus: Removes the feature gate receiver.prometheusreceiver.RemoveLegacyResourceAttributes which has been stable for some time. (#47598)

🚩 Deprecations 🚩

(Splunk) smartagent/kubernetes-cluster: Deprecate the kubernetes-cluster and openshift-cluster smartagent monitors in favor of the k8s_cluster receiver. (#7470)
(Splunk) collectd/custom: Deprecate the collectd/custom monitor (#7515)
The collectd/custom monitor is deprecated and will be removed on or after May 2026.
Please migrate to supported native OpenTelemetry Collector components as appropriate for your use case.
(Splunk) collectd/openstack: Deprecate the collectd/openstack monitor (#7475)
The collectd/openstack monitor is deprecated and will be removed on or after May 2026.
Please use the Prometheus receiver instead.
(Splunk) collectd/python: Deprecate the collectd/python monitor (#7515)
The collectd/python monitor is deprecated and will be removed on or after May 2026.
Please migrate to supported native OpenTelemetry Collector components as appropriate for your use case.
(Contrib) connector/span_metrics: Rename component type from spanmetrics to span_metrics to follow snake_case naming convention. The old name is kept as a deprecated alias. (#47963)
(Contrib) exporter/prometheusremotewrite: add_metric_suffixes is deprecated. Use translation_strategy: UnderscoreEscapingWithoutSuffixes if you are setting this to false. (#33661)
(Contrib) receiver/file_stats: Rename filestats receiver to file_stats with deprecated alias filestats (#45339)
(Contrib) receiver/fluent_forward: Rename receiver type from fluentforward to fluent_forward (#45339)
(Contrib) receiver/host_metrics: Rename hostmetrics receiver to host_metrics and add deprecated alias hostmetrics (#45449)
(Contrib) receiver/k8s_objects: Rename k8sobjects receiver to k8s_objects and add deprecated alias k8sobjects. (#47440)
(Contrib) receiver/ssh_check: Rename sshcheck receiver to ssh_check with deprecated alias sshcheck (#45339)

💡 Enhancements 💡

(Splunk) config: Add http_forwarder/opamp_splunk_o11y extension to default config (#7514)
Added http_forwarder/opamp_splunk_o11y extension to default agent and gateway configs.
This extension binds to port 4320 and forwards requests to Splunk Observability ingest.
The extension is intended as an entry point for receiving OpAMP data from instrumentation agents that support OpAMP,
such as the Splunk OpenTelemetry Java agent.
(Splunk) all: Bump Go version from 1.25 to 1.26 (#7507)
(Splunk) configsourcetelemetry: Add internal metrics to keep track of used Splunk custom config source. (#7479)
Introduce a new internal metric otelcol_splunk_config_source_usage to track the usage of the Splunk custom config source. This metric will be a gauge with a value of 1 when the Splunk custom config source is in use.
(Splunk) extensions/opamp: Add OpAMP extension, opamp/splunk_o11y, to the default configuration and lock it behind a feature gate. (#7508)
The OpAMP extension is included in the default configuration but disabled by default behind a feature gate.
Use the feature gate ID splunk.opamp.enabled to enable the OpAMP extension (e.g., --feature-gates=+splunk.opamp.enabled).
(Splunk) packaging: Update Splunk OpenTelemetry .NET agent to v1.14.0 (#7485)

(Core) all: Add declarative schema support for service telemetry resource configuration. (#14411)
The service::telemetry::resource configuration now accepts the declarative schema with explicit name/value pairs:

service:
  telemetry:
    resource:
      schema_url: https://opentelemetry.io/schemas/1.38.0
      attributes:
        - name: service.name
          value: my-collector
        - name: host.name
          value: collector-host

The legacy inline attribute map format is still supported for backward compatibility:

service:
  telemetry:
    resource:
      service.name: my-collector
      host.name: collector-host

Note: resource.detectors is accepted for forward compatibility but is not yet applied by the collector.

(Core) exporter/otlp_grpc: Added the server.address and url.path attributes to metrics generated by the otlp exporter. (#14998)
(Core) exporter/otlp_http: Added the server.address and url.path attributes to metrics generated by the otlp_http exporter. (#14998)
(Core) pkg/config/configgrpc: Add UserAgent field to ClientConfig to allow overriding the default gRPC user-agent string. (#14686)
The otlp gRPC exporter was unconditionally setting the User-Agent via
grpc.WithUserAgent() at dial time, which takes precedence over per-call
metadata, causing any user-configured User-Agent to be silently discarded.
A dedicated UserAgent field has been added to ClientConfig which, when
set, is used in the dial option directly instead of the default BuildInfo-derived string.
(Core) pkg/config/configgrpc: Accept gRPC resolver scheme URIs in client endpoint (e.g. passthrough:///host:port) to allow control over name resolution (#14990)
After the migration to grpc.NewClient, some gRPC client components such as the OTLP
exporter experienced connection issues in dual-stack DNS environments. This can now be
fixed by using the passthrough:/// gRPC resolver scheme in the endpoint field.
(Core) pkg/config/confignet: Add support for Windows Named Pipe (npipe) transport (#15085)
(Core) pkg/service: Emit a warning when using the old v0.2.0 declarative config format (#15088)
(Contrib) exporter/awss3: Add support for retry_on_failure (#47592)
(Contrib) exporter/prometheusremotewrite: Add support for translation_strategy, which supports UnderscoreEscapingWithSuffixes, UnderscoreEscapingWithoutSuffixes, NoUTF8EscapingWithSuffixes, and NoTranslation. (#33661)
(Contrib) exporter/prometheusremotewrite: Add support for exemplar labels when using PRW 2.0 (#33661)
(Contrib) exporter/signalfx: Add support for PersistentVolume and PersistentVolumeClaim entity property updates. (#47829)
Handle k8s.persistentvolume and k8s.persistentvolumeclaim entities in both the
metadata update and entity events paths. Label prefix stripping is skipped for
these entities to preserve full property key names.
(Contrib) exporter/signalfx: APM correlation now recognizes deployment.environment.name in addition to the deprecated deployment.environment attribute (#47862)
(Contrib) extension/health_check: Enable keep-alives for the health check extension's HTTP and gRPC servers. (#45837)
(Contrib) processor/k8s_attributes: Allow k8sattributes processors to be shared between pipelines (#36234)
When the processor.k8sattributes.ShareProcessorBetweenPipelines feature flag is enabled, k8sattributes processors
using the same configuration are shared between pipelines. This reduces the local cache size and the number of
connections to the K8s API Server.
(Contrib) processor/tail_sampling: Add distributed tracing instrumentation to tailsamplingprocessor to provide visibility into trace processing behavior and policy evaluation (#43931)
Adds trace spans for key operations:
- tailsampling.ConsumeTraces: Tracks incoming traces/spans count
- tailsampling.samplingPolicyOnTick: Records batch processing metrics and policy evaluation results
(Contrib) processor/transform: Added extract_percentile_metric function to Transform processor for extracting percentiles as gauge metrics from histograms. (#44316)
(Contrib) receiver/chrony: Enables dynamic metric reaggregation in the Chrony receiver. This does not break existing configuration files. (#46350)
(Contrib) receiver/chrony: Add file_mount_path config option for cross-namespace Unix datagram socket communication (#46833)
When the collector and chronyd run in separate containers with different network
namespaces, Go's default abstract socket autobind fails because abstract sockets
are namespace-scoped. The new file_mount_path option uses a directory on a shared
volume to bind a random client socket, allowing chronyd to reply across namespaces.
(Contrib) receiver/googlecloudpubsub: Add debug log of the pubsub message when an encoding error occurs. (#46662)
When the configured encoder fails to decode a Pub/Sub message, a debug-level
log is now emitted containing the message ID, attributes, and the underlying
error. This log is emitted regardless of the ignore_encoding_error setting,
making it easier to diagnose which messages are causing decoding failures.
(Contrib) receiver/host_metrics: Add AIX to the process scraper's supported-OS allowlist. The AIX-specific scraper implementation is added separately. (#47095)
(Contrib) receiver/icmpcheckreceiver: Enables dynamic metric reaggregation in the ICMP Check receiver. This does not break existing configuration files. (#46359)
(Contrib) receiver/journald: Log the full journalctl command which facilitates debugging. (#45619)
(Contrib) receiver/k8s_cluster: Add PersistentVolume and PersistentVolumeClaim metrics, entity events, and metadata support. (#47453)
New metrics (all disabled by default): k8s.persistentvolume.status.phase,
k8s.persistentvolume.storage.capacity, k8s.persistentvolumeclaim.status.phase,
k8s.persistentvolumeclaim.storage.request, k8s.persistentvolumeclaim.storage.capacity.
New entity types: k8s.persistentvolume, k8s.persistentvolumeclaim.
(Contrib) receiver/k8s_events: Add resource version persistence to the k8s_events receiver to prevent duplicate events on collector restart. (#47575)
A new storage configuration option accepts a storage extension ID (e.g. file_storage).
When configured, the receiver persists the latest resourceVersion after each watch event and
resumes from it on restart, preventing duplicate events. The persisted resourceVersion is
scoped per namespace, matching the behavior added to the k8sobjects receiver in #46543.
(Contrib) receiver/k8s_events: Expose reporting controller and reporting instance as part of kubernetes events (#45289)
This change adds a reporting controller and reporting instance to the kubernetes events receiver.
This allows for better monitoring and reporting of events collected by the receiver.
(Contrib) receiver/k8s_objects: When storage is configured, watch-mode objects automatically resume from the last seen resourceVersion across restarts, preventing event duplication. (#46543)
(Contrib) receiver/mongodb_atlas: Enables dynamic metric reaggregation in the MongoDB Atlas receiver. This does not break existing configuration files. (#46365)
(Contrib) receiver/mysql: Add MySQL <8 and MariaDB compatibility for query sample and top-query collection. The receiver now detects the server product and version at connect time and gates behavior accordingly. Changes include: (1) top-query collection uses a fallback template on MySQL <8 and MariaDB that omits query_sample_text (absent on those versions); (2) client.port and network.peer.port are now populated on MySQL 8.0.22+ via a lock-free join on performance_schema.processlist, and remain 0 on older MySQL and all MariaDB versions where this table is unavailable; (3) mysql.events_waits_current.timer_wait now uses a three-tier fallback — exact TIMER_WAIT for completed waits, a PS timer approximation for in-progress waits on MySQL 5.7+/8.0+, and thread.processlist_time (integer-second precision) as a universal fallback for MariaDB and older MySQL.
(#47302)
Supported products and versions: MySQL 5.7.3+, 8.0+; MariaDB 10.5.2+, 11.x.
See COMPATIBILITY.md in the receiver directory for a full version × feature matrix.
(Contrib) receiver/mysql: Add mysql.events_statements_current.timer_wait attribute to db.server.query_sample events, exposing the elapsed execution time of the sampled statement in seconds. (#47529)
On MariaDB and for in-flight MySQL statements where TIMER_WAIT is unavailable, PROCESSLIST_TIME is used as a fallback.
(Contrib) receiver/nginx: Enable the re-aggregation feature for the nginx receiver (#46368)
(Contrib) receiver/prometheus_remote_write: Translate prometheus metric unit names per opentelemetry spec. (#46984)
(Contrib) receiver/prometheus_remote_write: Add support for translating Prometheus Info and StateSet typed metrics to OTLP Non-Monotonic Sums. (#47727)
(Contrib) receiver/prometheus_remote_write: Handle all otel_scope_* prefixed labels per the Prometheus/OTLP compatibility spec. (#47726)
otel_scope_schema_url is now set as the instrumentation scope schema URL, and other otel_scope_<attr> labels become scope attributes (with the otel_scope_ prefix stripped), instead of being incorrectly added as metric data point attributes.
(Contrib) receiver/receiver_creator: Makes the default file_log config configurable on the receiver creator discovery feature. (#40769)
(Contrib) receiver/sqlquery: Add ignore_null_values config option to suppress NULL value warning logs (#43985)
(Contrib) receiver/sqlserver: Enriches db.server.query_sample log records in the SQL Server receiver with wait-derived fields by adding sqlserver.blocking.start_time, sqlserver.wait.resource.type, sqlserver.wait.resource.id, and sqlserver.lock.type. (#47119)
sqlserver.blocking.start_time is emitted only when sqlserver.blocking_session_id is positive; sqlserver.wait.resource.type and sqlserver.wait.resource.id are parsed from wait_resource; and sqlserver.lock.type maps lock waits to shared/exclusive.
(Contrib) receiver/ssh_check: Enables dynamic metric reaggregation in the SSH Check receiver. This does not break existing configuration files. (#46380)
(Contrib) receiver/statsd: Add ignore_host option to disable source IP-based aggregation (#45387)
(Contrib) receiver/tcpcheck: Enables dynamic metric reaggregation in the TCP Check receiver. This does not break existing configuration files. (#46382)
(Contrib) receiver/tls_check: Enables dynamic metric reaggregation in the TLS Check receiver. This does not break existing configuration files. (#46383)

🧰 Bug fixes 🧰

(Splunk) config: Remove redundant service attribute relabels from internal metrics scrape configs (#7481)
(Core) pkg/otelcol: Print components exactly once in the otelcol components command (#14682)
This resolves an issue where aliased components were skipped.
(Core) pkg/otelcol: Synchronize Collector Run and Shutdown lifecycles so that Shutdown blocks until Run completes all cleanup. (#4947)
Shutdown now blocks until Run finishes cleanup, matching http.Server semantics.
If Shutdown is called before Run, the next Run call returns nil after cleaning up
the config provider.
(Core) pkg/pdata: Use spec-compliant string representation for NaN, Infinity, and -Infinity in Value.AsString(). (#14487)
(Core) pkg/pprofile: Fix data corruption of resource and scope attributes after marshal-unmarshal-merge round-trip. (#15084)
(Core) pkg/service: Non-string resource attributes in telemetry configuration now return an error instead of panicking (#15171)
(Core) pkg/xscraperhelper: fix the merge of profiles in the profiling scraper helpers (#14790)
(Core) receiver/otlp: Fix profiles receiver reporting its samples as spans (#15089)
(Contrib) exporter/prometheusremotewrite: Scope attributes "name", "version", and "schema_url" are dropped to prevent conflicts with the scope's name, version, and schema url fields. (#47683)
(Contrib) exporter/prometheusremotewrite: Fix bug where non-monotonic sums are mapped to Prometheus counters instead of gauges. (#33661)
(Contrib) exporter/prometheusremotewrite: Respect the zero threshold of exponential histograms when set for PRW v2 (#33661)
(Contrib) exporter/prometheusremotewrite: Skip attributes with empty string values when converting OTLP metrics to Prometheus labels. (#47326)
Attributes and resource attributes with empty string values are now excluded
from Prometheus label conversion, preventing empty labels from being created.
(Contrib) exporter/signalfx: Fix incorrect host_physical_cpus and host_cpu_cores values reported on Linux (#47550)
(Contrib) exporter/splunk_hec: Fix HEC routing partitioning broken when the exporterhelper batcher is enabled (#47695)
(Contrib) extension/bearertokenauth: Replace custom file watching implementation with the shared credentialsfile helper, fixing defect with k8s secrets rotation (#46470, #45953)
(Contrib) extension/google_cloud_logentry_encoding: Add the deprecated name of the googlecloudlogentryencoding extension as a deprecated option to the factory. (#47663)
This was one of several components renamed in v0.148.0.
(Contrib) processor/k8s_attributes: Fix steady memory growth caused by map bucket retention in high-churn clusters. (#47337)
Compacts the pods map incrementally to avoid memory leaks.
(Contrib) processor/k8s_attributes: Fix service.name annotation not taking precedence over labels when otel_annotations is enabled. (#47534)
Restored correct precedence order so that resource.opentelemetry.io/service.name annotation
takes priority over app.kubernetes.io/name label, as documented in OTel semantic conventions.
(Contrib) receiver/azure_monitor: Fix StartTimestamp being greater than Timestamp in batch API path (#47705)
(Contrib) receiver/cisco_os: Add the deprecated name of the ciscoos extension as a deprecated option to the factory. (#47666)
This was one of several components renamed in v0.148.0.
(Contrib) receiver/kafka: Resume paused partitions after backoff delay and on reassignment after rebalance (#47118)
When message_marking.after=true and message_marking.on_error=false, non-permanent
processing errors (e.g. from memorylimiter) caused PauseFetchPartitions to be called
but ResumeFetchPartitions was never called, leaving partitions paused forever.
Partitions are now automatically resumed after the configured error_backoff.initial_interval
delay when error_backoff is enabled. Additionally, partitions paused across rebalances
are resumed via ResumeFetchPartitions in the assigned callback, since franz-go persists
the pause state by design.
(Contrib) receiver/mongodb_atlas: Fix include_clusters/exclude_clusters filtering having no effect. (#47037)
(Contrib) receiver/postgresql: Refined the collector query to filter out null parameter entries, minimizing null-related warnings in receiver. (#47768)
(Contrib) receiver/windows_event_log: Support the deprecated name windowseventlog for the windows_event_log receiver. (#47773)
This is a fix for a bug in the recent receiver rename in open-telemetry/opentelemetry-collector-contrib#47359

Docker Image Manifests:

Linux (amd64, arm64, ppc64le) and Windows (2019 amd64, 2022 amd64):

quay.io/signalfx/splunk-otel-collector:0.151.0
digest: sha256:83d5c130b9c0f763f338dab0f332ab3782bb0fee2a07e45b032194f1778fd4f7