v0.107.0

This Splunk OpenTelemetry Collector release includes changes from the opentelemetry-collector v0.107.0 and the opentelemetry-collector-contrib v0.107.0 releases where appropriate.
This release fixes CVE-2024-42368 on the bearerauthtokenextension (#34516). The Splunk distribution was not impacted by this CVE.

🐛 Known issues 🐛

We have identified an issue with this release concerning the handling of empty environment variable values in the collector configuration. The issue is tracked under open-telemetry/opentelemetry-collector#10949.

🛑 Breaking changes 🛑

• (Splunk) confmap: Do not expand special shell variable such as $* in configuration files. (#5206)
• (Splunk) Upgrade golang to 1.22 (#5248)
• (Core) service: Remove OpenCensus bridge completely, mark feature gate as stable. (#10414)
• (Contrib) Update the scope name for telemetry produce by components. The following table summarizes the changes:

Component name	Previous scope	New scope	PR number
azureeventhubreceiver	otelcol/azureeventhubreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/azureeventhubreceiver	(#34611)
cloudfoundryreceiver	otelcol/cloudfoundry	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/cloudfoundryreceiver	(#34612)
azuremonitorreceiver	otelcol/azuremonitorreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/azuremonitorreceiver	(#34618)
fileconsumer	otelcol/fileconsumer	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/fileconsumer	(#34619)
loadbalancingexporter	otelcol/loadbalancing	github.com/open-telemetry/opentelemetry-collector-contrib/exporter/loadbalancingexporter	(#34429)
apachereceiver	otelcol/apachereceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/apachereceiver	(#34517)
countconnector	otelcol/countconnector	github.com/open-telemetry/opentelemetry-collector-contrib/connector/countconnector	(#34583)
elasticsearchreceiver	otelcol/elasticsearchreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/elasticsearchreceiver	(#34529)
filterprocessor	otelcol/filter	github.com/open-telemetry/opentelemetry-collector-contrib/processor/filterprocessor	(#34550)
fluentforwardreceiver	otelcol/fluentforwardreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/fluentforwardreceiver	(#34534)
groupbyattrsprocessor	otelcol/groupbyattrs	github.com/open-telemetry/opentelemetry-collector-contrib/processor/groupbyattrsprocessor	(#34550)
haproxyreceiver	otelcol/haproxyreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/haproxyreceiver	(#34498)
hostmetricsreceiver receiver's scrapers	otelcol/hostmetricsreceiver/*	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/hostmetricsreceiver/internal/scraper/*	(#34526)
httpcheckreceiver	otelcol/httpcheckreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/httpcheckreceiver	(#34497)
k8sattributesprocessor	otelcol/k8sattributes	github.com/open-telemetry/opentelemetry-collector-contrib/processor/k8sattributesprocessor	(#34550)
k8sclusterreceiver	otelcol/k8sclusterreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver	(#34536)
kafkametricsreceiver	otelcol/kafkametricsreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kafkametricsreceiver	(#34538)
kafkareceiver	otelcol/kafkareceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kafkareceiver	(#34539)
kubeletstatsreceiver	otelcol/kubeletstatsreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver	(#34537)
mongodbatlasreceiver	otelcol/mongodbatlasreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/mongodbatlasreceiver	(#34543)
mongodbreceiver	otelcol/mongodbreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/mongodbreceiver	(#34544)
mysqlreceiver	otelcol/mysqlreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/mysqlreceiver	(#34545)
nginxreceiver	otelcol/nginxreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/nginxreceiver	(#34493)
oracledbreceiver	otelcol/oracledbreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/oracledbreceiver	(#34491)
postgresqlreceiver	otelcol/postgresqlreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/postgresqlreceiver	(#34476)
probabilisticsamplerprocessor	otelcol/probabilisticsampler	github.com/open-telemetry/opentelemetry-collector-contrib/processor/probabilisticsamplerprocessor	(#34550)
prometheusreceiver	otelcol/prometheusreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/prometheusreceiver	(#34589)
rabbitmqreceiver	otelcol/rabbitmqreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/rabbitmqreceiver	(#34475)
sshcheckreceiver	otelcol/sshcheckreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/sshcheckreceiver	(#34448)
vcenterreceiver	otelcol/vcenter	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/vcenterreceiver	(#34449)
redisreceiver	otelcol/redisreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/redisreceiver	(#34470)
routingprocessor	otelcol/routing	github.com/open-telemetry/opentelemetry-collector-contrib/processor/routingprocessor	(#34550)
solacereceiver	otelcol/solacereceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/solacereceiver	(#34466)
splunkenterprisereceiver	otelcol/splunkenterprisereceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/splunkenterprisereceiver	(#34452)
statsdreceiver	otelcol/statsdreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/statsdreceiver	(#34547)
tailsamplingprocessor	otelcol/tailsampling	github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor	(#34550)
sqlserverreceiver	otelcol/sqlserverreceiver	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/sqlserverreceiver	(#34451)

• (Contrib) elasticsearchreceiver: Enable more index metrics by default (#34396)
  This enables the following metrics by default:
  elasticsearch.index.documents
elasticsearch.index.operations.merge.current
elasticsearch.index.segments.count
  To preserve previous behavior, update your Elasticsearch receiver configuration to disable these metrics.
• (Contrib) vcenterreceiver: Enables all of the vSAN metrics by default. (#34409)
  The following metrics will be enabled by default now:
  • vcenter.cluster.vsan.throughput
  • vcenter.cluster.vsan.operations
  • vcenter.cluster.vsan.latency.avg
  • vcenter.cluster.vsan.congestions
  • vcenter.host.vsan.throughput
  • vcenter.host.vsan.operations
  • vcenter.host.vsan.latency.avg
  • vcenter.host.vsan.congestions
  • vcenter.host.vsan.cache.hit_rate
  • vcenter.vm.vsan.throughput
  • vcenter.vm.vsan.operations
  • vcenter.vm.vsan.latency.avg
• (Contrib) vcenterreceiver: Several host performance metrics now return 1 data point per time series instead of 5. (#34708)
  The 5 data points previously sent represented consecutive 20s sampling periods. Depending on the collection interval
  these could easily overlap. Sending just the latest of these data points is more in line with other performance metrics.
  This change also fixes an issue with the googlecloud exporter seeing these datapoints as duplicates.
  Following is the list of affected metrics which will now only report a single datapoint per set of unique attribute values.
  • vcenter.host.cpu.reserved
  • vcenter.host.disk.latency.avg
  • vcenter.host.disk.latency.max
  • vcenter.host.disk.throughput
  • vcenter.host.network.packet.drop.rate
  • vcenter.host.network.packet.error.rate
  • vcenter.host.network.packet.rate
  • vcenter.host.network.throughput
  • vcenter.host.network.usage
• (Splunk) Remove converters helping with old breaking changes. If those changes were not addressed, the collector will fail to start. (#5267)
  • Moving TLS config options in HEC exporter under tls group
  • Moving TLS insecure option in OTLP exporter under tls group
  • Renaming processor: k8s_tagger -> k8sattributes
  • Deprecation and removal of ballast extension
  • Debug exporter: loglevel -> verbosity renaming

🚀 New components 🚀

• (Splunk) Add Azure Blob receiver (#5200)
• (Splunk) Add Google Cloud PubSub receiver (#5200)

💡 Enhancements 💡

• (Core) confmap: Allow using any YAML structure as a string when loading configuration. (#10800)
  Previous to this change, slices could not be used as strings in configuration.
• (Core) client: Mark module as stable. (#10775)
• (Contrib) azureeventhubreceiver: Added traces support in azureeventhubreceiver (#33583)
• (Contrib) processor/k8sattributes: Add support for container.image.repo_digests metadata (#34029)
• (Contrib) hostmetricsreceiver: add reporting interval to entity event (#34240)
• (Contrib) elasticsearchreceiver: Add metric for active index merges (#34387)
• (Contrib) kafkaexporter: add an ability to partition logs based on resource attributes. (#33229)
• (Contrib) pkg/ottl: Add support for map literals in OTTL (#32388)
• (Contrib) pkg/ottl: Introduce ExtractGrokPatterns converter (#32593)
• (Contrib) pkg/ottl: Add the MD5 function to convert the value into a MD5 hash/digest (#33792)
• (Contrib) pkg/ottl: Introduce sha512 converter to generate SHA-512 hash/digest from given payload. (#34007)
• (Contrib) kafkametricsreceiver: Add option to configure cluster alias name and add new metrics for kafka topic configurations (#34148)
• (Contrib) receiver/splunkhec: Add a regex to enforce metrics naming for Splunk events fields based on metrics documentation. (#34275)
• (Contrib) filelogreceiver: Check for unsupported fractional seconds directive when converting strptime time layout to native format (#34390)
• (Contrib) windowseventlogreceiver: Add remote collection support to Stanza operator windows pkg to support remote log collect for the Windows Event Log receiver. (#33100)
• (Contrib) solacereceiver: Updated the format for generated metrics. Included a receiver_name attribute that identifies the Solace receiver that generated the metrics (#34541)
• (Contrib) metricstransformprocessor: Add scaling exponential histogram support (#29803)

🧰 Bug fixes 🧰

• (Core) configtelemetry: Add 10s read header timeout on the configtelemetry Prometheus HTTP server. (#5699)
• (Core) service: Allow users to disable the tracer provider via the feature gate service.noopTracerProvider (#10858)
  The service is returning an instance of a SDK tracer provider regardless of whether there were any processors configured causing resources to be consumed unnecessarily.
• (Core) processorhelper: Fix processor metrics not being reported initially with 0 values. (#10855)
• (Core) service: Implement the temporality_preference setting for internal telemetry exported via OTLP (#10745)
• (Core) configauth: Fix unmarshaling of authentication in HTTP servers. (#10750)
• (Core) component: Allow component names of up to 1024 characters in length. (#10816)
• (Core) service: Fix memory leaks during service package shutdown (#9241)
• (Core) batchprocessor: Update units for internal telemetry (#10652)
• (Contrib) configauth: Fix unmarshaling of authentication in HTTP servers. (#34325)
  This brings in a bug fix from the core collector. See open-telemetry/opentelemetry-collector#10750.
• (Contrib) docker_observer: Change default endpoint for docker_observer on Windows to npipe:////./pipe/docker_engine (#34358)
• (Contrib) pkg/translator/jaeger: Change the translation to jaeger spans to match semantic conventions. (#34368)
  otel.library.name is deprecated and replaced by otel.scope.name
otel.library.version is deprecated and replaced by otel.scope.version
• (Contrib) pkg/stanza: Ensure that errors from Process and Write do not break for loops (#34295)
• (Contrib) azuremonitorreceiver: Add Azure China as a cloud option. (#34315)
• (Contrib) postgresqlreceiver: Support unix socket based replication by handling null values in the client_addr field (#33107)
• (Contrib) splunkhecexporter: Copy the bytes to be placed in the request body to avoid corruption on reuse (#34357)
  This bug is a manifestation of golang/go#51907.
  Under high load, the pool of buffers used to send requests is reused enough
  that the same buffer is used concurrently to process data and be sent as request body.
  The fix is to copy the payload into a new byte array before sending it.
• (Contrib) pkg/stanza: fix nil value conversion (#34672)

Docker Image Manifests:

• Linux (amd64, arm64, ppc64le) and Windows (2019 amd64, 2022 amd64):
  • quay.io/signalfx/splunk-otel-collector:0.107.0
  • digest: sha256:b9f1461dd770435456904fce0738c29f8e729e5d901815a8ced2b32a642ca6e2
• Windows (2019 amd64, 2022 amd64):
  • quay.io/signalfx/splunk-otel-collector-windows:0.107.0
  • digest: sha256:18b2e421c71aebd88d473a12ae7ebf73b69929c6d8b4dbe424d2f8dd74090c4e