Rename parameter groups for Splunk OTel Collector components

Rename the following parameter groups according to [Splunk GDI Specification](https://github.com/signalfx/gdi-specification/blob/main/specification/configuration.md#kubernetes-package-management-solutions): - `otelAgent` -> `agent` - `otelCollector` -> `gateway` - `otelK8sClusterReceiver` -> `clusterReceiver`
signalfx · Nov 18, 2021 · d9abeee · d9abeee
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -20,6 +20,11 @@ guidelines](https://github.com/signalfx/splunk-otel-collector-chart/blob/main/UP
 - Changed the default checkpoint path to `/var/addon/splunk/otel_pos` (#292)
 - Rename "provider" and "distro" parameters to "cloudProvider" and
   "distribution" (#297)
+- Rename parameter groups for Splunk OTel Collector components (#301):
+  - `otelAgent` -> `agent`
+  - `otelCollector` -> `gateway`
+  - `otelK8sClusterReceiver` -> `clusterReceiver`
+
 
 ### Fixed
 

diff --git a/Makefile b/Makefile
@@ -33,7 +33,7 @@ render:
 		--namespace default \
 		--values rendered/values.yaml \
 		--output-dir "$$dir" \
-		--set otelAgent.enabled=false,otelCollector.enabled=true,otelK8sClusterReceiver.enabled=false \
+		--set agent.enabled=false,gateway.enabled=true,clusterReceiver.enabled=false \
 		default helm-charts/splunk-otel-collector; \
 	mv "$$dir"/splunk-otel-collector/templates/* "$$dir"; \
 	rm -rf "$$dir"/splunk-otel-collector

diff --git a/UPGRADING.md b/UPGRADING.md
@@ -2,12 +2,18 @@
 
 ## 0.37.1 to 0.38.0
 
-[#297 "provider" and "distro" parameters are renamed to "cloudProvider" and
-"distribution"](https://github.com/signalfx/splunk-otel-collector-chart/pull/297)
+[297](https://github.com/signalfx/splunk-otel-collector-chart/pull/297),
+[301](https://github.com/signalfx/splunk-otel-collector-chart/pull/301) Several
+parameters in values.yaml configuration were renamed according to [Splunk GDI
+Specification](https://github.com/signalfx/gdi-specification/blob/main/specification/configuration.md#kubernetes-package-management-solutions)
 
-Please rename the following parameters accordingly:
+If you use the following parameters in your custom values.yaml, please rename 
+them accordingly:
 - `provider` -> `cloudProvider`
 - `distro` -> `distribution`
+- `otelAgent` -> `agent`
+- `otelCollector` -> `gateway`
+- `otelK8sClusterReceiver` -> `clusterReceiver`
 
 [#295 Secret names are changed according to the GDI
 specification](https://github.com/signalfx/splunk-otel-collector-chart/pull/295)

diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
@@ -51,19 +51,19 @@ guidelines](https://github.com/signalfx/splunk-otel-collector/blob/main/docs/siz
 Use the following configuration to bump resource limits for the agent:
 
 ```yaml
-otelAgent:
+agent:
   resources:
     limits:
       cpu: 500m
       memory: 1Gi
 ```
 
-Resources allocated to Kubernetes cluster receiver deployment should be based on
-the cluster size. For a cluster with 100 nodes you would need the following
+Resources allocated to cluster receiver deployment should be based on the 
+cluster size. For a cluster with 100 nodes you would need the following
 resources:
 
 ```yaml
-otelK8sClusterReceiver:
+clusterReceiver:
   resources:
     limits:
       cpu: 1
@@ -92,7 +92,7 @@ sending queue of the failing exporter, e.g. to reduce `sending_queue` for the
 `sapm` exporter (tracing):
 
 ```
-otelAgent:
+agent:
   config:
     exporters:
       sapm:

diff --git a/examples/README.md b/examples/README.md
@@ -59,7 +59,7 @@ Final OTel config will be created by merging the custom config provided in
 [default configuration of agent-mode collector](https://github.com/signalfx/splunk-otel-collector-chart/blob/main/helm-charts/splunk-otel-collector/templates/config/_otel-agent.tpl).
 
 ```yaml
-otelAgent:
+agent:
   config:
     processors:
       probabilistic_sampler:
@@ -87,11 +87,11 @@ This configuration installs collector as a gateway deployment along with
 regular components. All the telemetry will be routed through this collector.
 By default, the gateway-mode collector deployed with 3 replicas with 4 CPU
 cores and 8Gb of memory each, but this can be easily changed as in this example.
-`resources` can be adjusted for other components as well: `otelAgent`,
-`otelK8sClusterReceiver`, `fluentd`.
+`resources` can be adjusted for other components as well: `agent`,
+`clusterReceiver`, `fluentd`.
 
 ```yaml
-otelCollector:
+gateway:
   enabled: true
   replicaCount: 1
   resources:
@@ -107,9 +107,9 @@ No metrics or logs will be collector, the gateway can be used to forward
 telemetry data through it for aggregation, enrichment purposes.
 
 ```yaml
-otelCollector:
+gateway:
   enabled: true
-otelAgent:
+agent:
   enabled: false
 logsEnabled: false
 ```
@@ -120,7 +120,7 @@ The following configuration can be used to forward telemetry through an OTel
 collector gateway deployed separately.
 
 ```yaml
-otelAgent:
+agent:
   config:
     exporters:
       otlp:
@@ -137,7 +137,7 @@ otelAgent:
         metrics:
           exporters: [otlp]
 
-otelK8sClusterReceiver:
+clusterReceiver:
   config:
     exporters:
       signalfx:
@@ -157,11 +157,11 @@ Collector containers to send the traffic through a proxy server from
 both components that are enabled by default.
 
 ```yaml
-otelAgent:
+agent:
   extraEnvs:
     - name: HTTPS_PROXY
       value: "192.168.0.10"
-otelK8sClusterReceiver:
+clusterReceiver:
   extraEnvs:
     - name: HTTPS_PROXY
       value: "192.168.0.10"

diff --git a/examples/add-sampler-values.yaml b/examples/add-sampler-values.yaml
@@ -3,7 +3,7 @@ splunkObservability:
   realm: us0
   accessToken: my-access-token
 
-otelAgent:
+agent:
   config:
     processors:
       probabilistic_sampler:

diff --git a/examples/enable-gateway-values.yaml b/examples/enable-gateway-values.yaml
@@ -3,7 +3,7 @@ splunkObservability:
   realm: us0
   accessToken: my-access-token
 
-otelCollector:
+gateway:
   enabled: true
   replicaCount: 1
   resources:

diff --git a/examples/gateway-only-values.yaml b/examples/gateway-only-values.yaml
@@ -3,8 +3,8 @@ splunkObservability:
   realm: us0
   accessToken: my-access-token
 
-otelCollector:
+gateway:
   enabled: true
-otelAgent:
+agent:
   enabled: false
 logsEnabled: false
diff --git a/examples/use-custom-gateway-values.yaml b/examples/use-custom-gateway-values.yaml
@@ -3,7 +3,7 @@ splunkObservability:
   realm: us0
   accessToken: my-access-token
 
-otelAgent:
+agent:
   config:
     exporters:
       otlp:
@@ -19,7 +19,7 @@ otelAgent:
         metrics:
           exporters: [otlp]
 
-otelK8sClusterReceiver:
+clusterReceiver:
   config:
     exporters:
       signalfx:

diff --git a/examples/use-proxy-values.yaml b/examples/use-proxy-values.yaml
@@ -3,11 +3,11 @@ splunkObservability:
   realm: us0
   accessToken: my-access-token
 
-otelAgent:
+agent:
   extraEnvs:
     - name: HTTPS_PROXY
       value: "192.168.0.10"
-otelK8sClusterReceiver:
+clusterReceiver:
   extraEnvs:
     - name: HTTPS_PROXY
       value: "192.168.0.10"
diff --git a/helm-charts/splunk-otel-collector/ci/sampler-gateway-env-vars-java-logs-values.yaml b/helm-charts/splunk-otel-collector/ci/sampler-gateway-env-vars-java-logs-values.yaml
@@ -3,7 +3,7 @@ splunkObservability:
   realm: fake-realm
   accessToken: fake-token
 
-otelAgent:
+agent:
   config:
     processors:
       probabilistic_sampler:
@@ -23,12 +23,12 @@ otelAgent:
     - name: HTTPS_PROXY
       value: "192.168.0.10"
 
-otelK8sClusterReceiver:
+clusterReceiver:
   extraEnvs:
     - name: HTTPS_PROXY
       value: "192.168.0.10"
 
-otelCollector:
+gateway:
   enabled: true
   replicaCount: 1
   resources:

diff --git a/helm-charts/splunk-otel-collector/ci/use-custom-gateway-values.yaml b/helm-charts/splunk-otel-collector/ci/use-custom-gateway-values.yaml
@@ -5,7 +5,7 @@ splunkAccessToken: my-access-token
 
 logsEnabled: false
 
-otelAgent:
+agent:
   config:
     exporters:
       otlp:
@@ -21,7 +21,7 @@ otelAgent:
         metrics:
           exporters: [otlp]
 
-otelK8sClusterReceiver:
+clusterReceiver:
   config:
     exporters:
       signalfx:

diff --git a/helm-charts/splunk-otel-collector/templates/NOTES.txt b/helm-charts/splunk-otel-collector/templates/NOTES.txt
@@ -45,3 +45,15 @@ Splunk OpenTelemetry Connector is installed and configured to send data to Splun
 [WARNING] ".Values.extraAttributes.podLabels" parameter is deprecated, please use ".Values.extraAttributes.fromLabels" instead.
           Upgrade guidelines: https://github.com/signalfx/splunk-otel-collector-chart/blob/main/UPGRADING.md#0371-to-0380
 {{ end }}
+{{- if not (eq (toString .Values.otelAgent) "<nil>") }}
+[WARNING] "otelAgent" parameter group is deprecated, please rename it to "agent" in your custom values.yaml.
+          Upgrade guidelines: https://github.com/signalfx/splunk-otel-collector-chart/blob/main/UPGRADING.md#0371-to-0380
+{{ end }}
+{{- if not (eq (toString .Values.otelCollector) "<nil>") }}
+[WARNING] "otelCollector" parameter group is deprecated, please rename it to "gateway" in your custom values.yaml.
+          Upgrade guidelines: https://github.com/signalfx/splunk-otel-collector-chart/blob/main/UPGRADING.md#0371-to-0380
+{{ end }}
+{{- if not (eq (toString .Values.otelK8sClusterReceiver) "<nil>") }}
+[WARNING] "otelK8sClusterReceiver" parameter group is deprecated, please rename it to "clusterReceiver" in your custom values.yaml.
+          Upgrade guidelines: https://github.com/signalfx/splunk-otel-collector-chart/blob/main/UPGRADING.md#0371-to-0380
+{{ end }}
diff --git a/helm-charts/splunk-otel-collector/templates/_helpers.tpl b/helm-charts/splunk-otel-collector/templates/_helpers.tpl
@@ -272,3 +272,39 @@ distribution helper to support backward compatibility with the deprecated name.
 {{- define "splunk-otel-collector.distribution" -}}
 {{- .Values.distribution | default .Values.distro | default "" -}}
 {{- end -}}
+
+{{/*
+Helper that returns "agent" parameter group yaml taking care of backward 
+compatibility with the old config group name: "otelAgent".
+*/}}
+{{- define "splunk-otel-collector.agent" -}}
+{{- if eq (toString .Values.otelAgent) "<nil>" }}
+{{- .Values.agent | toYaml }}
+{{- else }}
+{{- deepCopy .Values.otelAgent | mustMergeOverwrite (deepCopy .Values.agent) | toYaml }}
+{{- end }}
+{{- end -}}
+
+{{/*
+Helper that returns "gateway" parameter group yaml taking care of backward 
+compatibility with the old config group name: "otelCollector".
+*/}}
+{{- define "splunk-otel-collector.gateway" -}}
+{{- if eq (toString .Values.otelCollector) "<nil>" }}
+{{- .Values.gateway | toYaml }}
+{{- else }}
+{{- deepCopy .Values.otelCollector | mustMergeOverwrite (deepCopy .Values.gateway) | toYaml }}
+{{- end }}
+{{- end -}}
+
+{{/*
+Helper that returns "clusterReceiver" parameter group yaml taking care of backward 
+compatibility with the old config group name: "otelK8sClusterReceiver".
+*/}}
+{{- define "splunk-otel-collector.clusterReceiver" -}}
+{{- if eq (toString .Values.otelK8sClusterReceiver) "<nil>" }}
+{{- .Values.clusterReceiver | toYaml }}
+{{- else }}
+{{- deepCopy .Values.otelK8sClusterReceiver | mustMergeOverwrite (deepCopy .Values.clusterReceiver) | toYaml }}
+{{- end }}
+{{- end -}}