diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml new file mode 100644 index 0000000..929454a --- /dev/null +++ b/.github/workflows/release.yml @@ -0,0 +1,42 @@ +name: Release + +on: + release: + types: [published] + +permissions: + contents: read + packages: write + +jobs: + build-and-push-backend: + name: Build and push backend image + runs-on: ubuntu-latest + steps: + - name: Checkout + uses: actions/checkout@v4 + + - name: Log in to GHCR + uses: docker/login-action@v3 + with: + registry: ghcr.io + username: ${{ github.actor }} + password: ${{ secrets.GITHUB_TOKEN }} + + - name: Docker meta + id: meta + uses: docker/metadata-action@v5 + with: + images: ghcr.io/glueops/argocd-otel-extension-api + tags: | + type=semver,pattern={{version}} + type=semver,pattern={{major}}.{{minor}} + type=sha + + - name: Build and push + uses: docker/build-push-action@v6 + with: + context: ./backend + push: true + tags: ${{ steps.meta.outputs.tags }} + labels: ${{ steps.meta.outputs.labels }} diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..baf1908 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +backend/node_modules/ diff --git a/README.md b/README.md index a0dffa2..656a75d 100644 --- a/README.md +++ b/README.md @@ -17,6 +17,13 @@ wget -O argocd.yaml https://raw.githubusercontent.com/GlueOps/docs-argocd/main/a - Replace `placeholder_tenant_key` with your tenant/company key. Example: `antoniostacos` - Replace `placeholder_cluster_environment` with your cluster_environment name. Example: `nonprod` - The `placeholder_argocd_oidc_client_secret_from_dex` that you specify needs to be the same one you use in the `platform.yaml` for ArgoCD. If they do not match you will not be able to login. + - OTEL is tenant-overridable through the Terraform module inputs: + - `otel_enabled` enables or disables the global ArgoCD OTEL extension for the tenant. The default is `false`, so tenants must opt in explicitly. + - `otel_extension_version` sets the GitHub release tag used for the extension tarball. + - `otel_backend_tag` sets the OTEL backend API image tag. + - `tempo_base_url` sets the in-cluster Tempo endpoint. Leave it empty to disable traces while keeping metrics enabled. + - If you are installing from the downloaded `argocd.yaml` directly instead of using Terraform, replace `placeholder_otel_enabled` with `true` or `false` before running Helm. Leave the OTEL placeholder comments in place to keep OTEL disabled, or replace those placeholder comments with concrete OTEL config, RBAC, server extension, and backend object blocks if you want OTEL enabled without Terraform. + - The OTEL extension is defined in `argocd.yaml` and loaded by ArgoCD itself, so it is global for all Argo applications without changing app templates. - Install ArgoCD @@ -38,14 +45,20 @@ kubectl get pods -n glueops-core ```hcl module "argocd_helm_values" { - source = "git::https://github.com/GlueOps/docs-argocd.git" - tenant_key = "antoniostacos" - cluster_environment = "nonprod" - client_secret = "Zsbui/29YEqoGOzuI8snlqGcdaRYPSLocwLXDB5GhZY=" - glueops_root_domain = "onglueops.com" + source = "git::https://github.com/GlueOps/docs-argocd.git" + tenant_key = "antoniostacos" + cluster_environment = "nonprod" + client_secret = "Zsbui/29YEqoGOzuI8snlqGcdaRYPSLocwLXDB5GhZY=" + glueops_root_domain = "onglueops.com" + argocd_app_version = "v2.8.6" + gatekeeper_tag = "v1.0.0" + otel_enabled = true + otel_extension_version = "v0.1.2" + otel_backend_tag = "v0.1.2" + tempo_base_url = "http://tempo.glueops-core-tempo.svc.cluster.local:3200" } output "argocd_helm_values" { - value = module.argocd_yaml.argocd + value = module.argocd_helm_values.helm_values } ``` diff --git a/argocd.yaml.tpl b/argocd.yaml.tpl index 0c915a7..8c626b7 100644 --- a/argocd.yaml.tpl +++ b/argocd.yaml.tpl @@ -165,6 +165,7 @@ applicationSet: configs: params: server.insecure: true + server.enable.proxy.extension: placeholder_otel_enabled cm: # @ignored timeout.reconciliation: 10s @@ -217,6 +218,7 @@ configs: clientID: argocd clientSecret: placeholder_argocd_oidc_client_secret_from_dex redirectURI: https://argocd.placeholder_cluster_environment.placeholder_tenant_key.placeholder_glueops_root_domain/api/dex/callback + # placeholder_otel_extension_config rbac: # -- A good reference for this is: https://argo-cd.readthedocs.io/en/stable/operator-manual/rbac/ # This default policy is for GlueOps orgs/teams only. Please change it to reflect your own orgs/teams. @@ -224,8 +226,10 @@ configs: # @default -- `''` (See [values.yaml]) policy.csv: | placeholder_argocd_rbac_policies + # placeholder_otel_rbac_policies # @ignored server: + # placeholder_otel_server_extensions # @ignored affinity: nodeAffinity: @@ -296,6 +300,7 @@ extraObjects: name: argocd-server port: number: 80 +# placeholder_otel_backend_objects - apiVersion: apiextensions.k8s.io/v1 kind: CustomResourceDefinition diff --git a/backend/.dockerignore b/backend/.dockerignore new file mode 100644 index 0000000..f4100b6 --- /dev/null +++ b/backend/.dockerignore @@ -0,0 +1,3 @@ +node_modules +npm-debug.log +.npm diff --git a/backend/Dockerfile b/backend/Dockerfile new file mode 100644 index 0000000..27739fc --- /dev/null +++ b/backend/Dockerfile @@ -0,0 +1,8 @@ +FROM node:20-alpine +WORKDIR /app +COPY package*.json ./ +RUN npm ci --omit=dev +COPY src/ ./src/ +EXPOSE 8000 +USER node +CMD ["node", "src/server.js"] diff --git a/backend/README.md b/backend/README.md new file mode 100644 index 0000000..058b098 --- /dev/null +++ b/backend/README.md @@ -0,0 +1,46 @@ +# argocd-otel-extension-api + +Backend service for the ArgoCD OTEL UI extension. It proxies Prometheus and Tempo endpoints so the extension frontend can query metrics and traces without direct cluster network access. + +## Endpoints + +| Path | Proxied to | +|------|------------| +| `GET /healthz` | Local health check — returns `{"status":"ok"}` | +| `ANY /prometheus/*` | `PROMETHEUS_BASE_URL/*` (path prefix stripped) | +| `ANY /tempo/*` | `TEMPO_BASE_URL/*` (path prefix stripped) | + +### Prometheus example +``` +GET /prometheus/api/v1/query?query=up +``` +Proxied to `$PROMETHEUS_BASE_URL/api/v1/query?query=up`. + +### Tempo example +``` +GET /tempo/api/search?tags=service.name%3Dmyapp +``` +Proxied to `$TEMPO_BASE_URL/api/search?tags=service.name%3Dmyapp`. + +## Environment variables + +| Variable | Required | Default | Description | +|----------|----------|---------|-------------| +| `PORT` | No | `8000` | Port the server listens on | +| `PROMETHEUS_BASE_URL` | Yes (for metrics) | `""` | In-cluster Prometheus base URL, e.g. `http://kps-prometheus.glueops-core-kube-prometheus-stack.svc.cluster.local:9090` | +| `TEMPO_BASE_URL` | No | `""` | In-cluster Tempo base URL, e.g. `http://tempo.glueops-core-tempo.svc.cluster.local:3200`. Leave empty to disable trace proxying. | +| `LOG_LEVEL` | No | `INFO` | Log verbosity: `DEBUG`, `INFO`, `WARN`, or `ERROR` | + +## Running locally + +```bash +npm install +PROMETHEUS_BASE_URL=http://localhost:9090 node src/server.js +``` + +## Container image + +The image is published to GHCR on every release: +``` +ghcr.io/glueops/argocd-otel-extension-api: +``` diff --git a/backend/package-lock.json b/backend/package-lock.json new file mode 100644 index 0000000..5254517 --- /dev/null +++ b/backend/package-lock.json @@ -0,0 +1,1041 @@ +{ + "name": "argocd-otel-extension-api", + "version": "0.1.1", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "argocd-otel-extension-api", + "version": "0.1.1", + "dependencies": { + "express": "^4.21.2", + "http-proxy-middleware": "^3.0.7" + }, + "engines": { + "node": ">=20" + } + }, + "node_modules/@types/http-proxy": { + "version": "1.17.17", + "resolved": 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+{ + "name": "argocd-otel-extension-api", + "version": "0.1.1", + "description": "Backend API service for ArgoCD OTEL extension - proxies Prometheus and Tempo endpoints", + "main": "src/server.js", + "scripts": { + "start": "node src/server.js" + }, + "dependencies": { + "express": "^4.21.2", + "http-proxy-middleware": "^3.0.7" + }, + "engines": { + "node": ">=20" + } +} diff --git a/backend/src/server.js b/backend/src/server.js new file mode 100644 index 0000000..9c94a6d --- /dev/null +++ b/backend/src/server.js @@ -0,0 +1,72 @@ +'use strict'; + +const express = require('express'); +const { createProxyMiddleware } = require('http-proxy-middleware'); + +const PORT = parseInt(process.env.PORT || '8000', 10); +const PROMETHEUS_BASE_URL = process.env.PROMETHEUS_BASE_URL || ''; +const TEMPO_BASE_URL = process.env.TEMPO_BASE_URL || ''; +const LOG_LEVEL = (process.env.LOG_LEVEL || 'INFO').toUpperCase(); + +const app = express(); + +function log(level, message) { + const levels = { DEBUG: 0, INFO: 1, WARN: 2, ERROR: 3 }; + if ((levels[level] || 0) >= (levels[LOG_LEVEL] || 1)) { + console.log(JSON.stringify({ time: new Date().toISOString(), level, message })); + } +} + +app.get('/healthz', (_req, res) => { + res.json({ status: 'ok' }); +}); + +if (PROMETHEUS_BASE_URL) { + app.use( + '/prometheus', + createProxyMiddleware({ + target: PROMETHEUS_BASE_URL, + changeOrigin: true, + pathRewrite: { '^/prometheus': '' }, + on: { + error: (err, _req, res) => { + log('ERROR', `Prometheus proxy error: ${err.message}`); + res.status(502).json({ error: 'Bad Gateway' }); + }, + }, + }) + ); + log('INFO', `Prometheus proxy enabled → ${PROMETHEUS_BASE_URL}`); +} else { + app.use('/prometheus', (_req, res) => { + res.status(503).json({ error: 'PROMETHEUS_BASE_URL not configured' }); + }); + log('WARN', 'PROMETHEUS_BASE_URL not set; /prometheus routes will return 503'); +} + +if (TEMPO_BASE_URL) { + app.use( + '/tempo', + createProxyMiddleware({ + target: TEMPO_BASE_URL, + changeOrigin: true, + pathRewrite: { '^/tempo': '' }, + on: { + error: (err, _req, res) => { + log('ERROR', `Tempo proxy error: ${err.message}`); + res.status(502).json({ error: 'Bad Gateway' }); + }, + }, + }) + ); + log('INFO', `Tempo proxy enabled → ${TEMPO_BASE_URL}`); +} else { + app.use('/tempo', (_req, res) => { + res.status(503).json({ error: 'TEMPO_BASE_URL not configured' }); + }); + log('WARN', 'TEMPO_BASE_URL not set; /tempo routes will return 503'); +} + +app.listen(PORT, () => { + log('INFO', `argocd-otel-extension-api listening on port ${PORT}`); +}); diff --git a/main.tf b/main.tf index 2dbf4d7..9bc1b14 100644 --- a/main.tf +++ b/main.tf @@ -1,10 +1,12 @@ terraform { + required_version = ">= 1.2.0" + required_providers { http = { - source = "hashicorp/http" + source = "hashicorp/http" } local = { - source = "hashicorp/local" + source = "hashicorp/local" } } } @@ -56,18 +58,263 @@ variable "gatekeeper_tag" { description = "Image tag (SHA or semver) for ghcr.repo.gpkg.io/glueops/gatekeeper.platform.glueops.dev" } +variable "otel_enabled" { + type = bool + description = "Enable or disable the global ArgoCD OTEL extension and its backend service for this tenant" + default = false +} -output "helm_values" { - value = replace(replace(replace(replace(replace( - replace( - replace( - data.local_file.argocd_template.content, - "placeholder_tenant_key", var.tenant_key), - "placeholder_cluster_environment", var.cluster_environment), - "placeholder_argocd_oidc_client_secret_from_dex", var.client_secret), - "placeholder_glueops_root_domain", var.glueops_root_domain), - " placeholder_argocd_rbac_policies", var.argocd_rbac_policies), - "placeholder_argocd_app_version", var.argocd_app_version), - "placeholder_gatekeeper_tag", var.gatekeeper_tag +variable "otel_extension_version" { + type = string + description = "GitHub release tag for the ArgoCD OTEL extension tarball (example: v0.1.2)" + default = "v0.1.2" +} + +variable "otel_backend_tag" { + type = string + description = "Image tag (SHA or semver) for ghcr.io/glueops/argocd-extension-backend-api" + default = "v0.1.1" +} + +variable "tempo_base_url" { + type = string + description = "In-cluster Tempo base URL for trace search. Leave empty to disable traces while keeping metrics enabled." + default = "" +} + +locals { + otel_enabled_string = var.otel_enabled ? "true" : "false" + otel_extension_version_trimmed = trimspace(var.otel_extension_version) + otel_backend_tag_trimmed = trimspace(var.otel_backend_tag) + tempo_base_url_trimmed = trimspace(var.tempo_base_url) + otel_extension_semver = trimprefix(local.otel_extension_version_trimmed, "v") + otel_extension_config = var.otel_enabled ? join("\n", [ + " extension.config: |", + " extensions:", + " - name: otel-extension", + " backend:", + " services:", + " - url: http://argocd-extension-backend-api.glueops-core.svc.cluster.local:8000", + ]) : "" + otel_rbac_policies = var.otel_enabled ? join("\n", [ + " p, role:readonly, extensions, invoke, otel-extension, allow", + " p, role:admin, extensions, invoke, otel-extension, allow", + ]) : "" + otel_server_extensions = var.otel_enabled ? join("\n", [ + " extensions:", + " enabled: true", + " extensionList:", + " - name: otel-extension", + " env:", + " - name: EXTENSION_URL", + " value: \"https://github.com/GlueOps/argo-cd-ui-extention/releases/download/placeholder_otel_extension_version/extension.tar.gz\"", + " - name: EXTENSION_VERSION", + " value: \"placeholder_otel_extension_semver\"", + ]) : "" + otel_backend_objects = var.otel_enabled ? join("\n", [ + "", + " - apiVersion: apps/v1", + " kind: Deployment", + " metadata:", + " name: argocd-extension-backend-api", + " namespace: glueops-core", + " labels:", + " app.kubernetes.io/name: argocd-extension-backend-api", + " spec:", + " replicas: 2", + " selector:", + " matchLabels:", + " app.kubernetes.io/name: argocd-extension-backend-api", + " template:", + " metadata:", + " labels:", + " app.kubernetes.io/name: argocd-extension-backend-api", + " spec:", + " nodeSelector:", + " glueops.dev/role: glueops-platform", + " tolerations:", + " - key: \"glueops.dev/role\"", + " operator: \"Equal\"", + " value: \"glueops-platform\"", + " effect: \"NoSchedule\"", + " containers:", + " - name: argocd-extension-backend-api", + " image: \"ghcr.io/glueops/argocd-extension-backend-api:placeholder_otel_backend_tag\"", + " imagePullPolicy: IfNotPresent", + " ports:", + " - name: http", + " containerPort: 8000", + " protocol: TCP", + " env:", + " - name: PORT", + " value: \"8000\"", + " - name: PROMETHEUS_BASE_URL", + " value: \"http://kps-prometheus.glueops-core-kube-prometheus-stack.svc.cluster.local:9090\"", + " - name: TEMPO_BASE_URL", + " value: \"placeholder_tempo_base_url\"", + " - name: LOG_LEVEL", + " value: \"INFO\"", + " readinessProbe:", + " httpGet:", + " path: /healthz", + " port: http", + " initialDelaySeconds: 5", + " periodSeconds: 10", + " livenessProbe:", + " httpGet:", + " path: /healthz", + " port: http", + " initialDelaySeconds: 15", + " periodSeconds: 20", + " resources:", + " requests:", + " cpu: 50m", + " memory: 64Mi", + " limits:", + " cpu: 250m", + " memory: 256Mi", + "", + " - apiVersion: v1", + " kind: Service", + " metadata:", + " name: argocd-extension-backend-api", + " namespace: glueops-core", + " labels:", + " app.kubernetes.io/name: argocd-extension-backend-api", + " spec:", + " type: ClusterIP", + " selector:", + " app.kubernetes.io/name: argocd-extension-backend-api", + " ports:", + " - name: http", + " port: 8000", + " targetPort: http", + " protocol: TCP", + ]) : "" + + rendered_argocd_values_tenant = replace( + data.local_file.argocd_template.content, + "placeholder_tenant_key", + var.tenant_key + ) + + rendered_argocd_values_environment = replace( + local.rendered_argocd_values_tenant, + "placeholder_cluster_environment", + var.cluster_environment + ) + + rendered_argocd_values_secret = replace( + local.rendered_argocd_values_environment, + "placeholder_argocd_oidc_client_secret_from_dex", + var.client_secret + ) + + rendered_argocd_values_domain = replace( + local.rendered_argocd_values_secret, + "placeholder_glueops_root_domain", + var.glueops_root_domain + ) + + rendered_argocd_values_rbac = replace( + local.rendered_argocd_values_domain, + " placeholder_argocd_rbac_policies", + var.argocd_rbac_policies + ) + + rendered_argocd_values_app_version = replace( + local.rendered_argocd_values_rbac, + "placeholder_argocd_app_version", + var.argocd_app_version + ) + + rendered_argocd_values_gatekeeper = replace( + local.rendered_argocd_values_app_version, + "placeholder_gatekeeper_tag", + var.gatekeeper_tag + ) + + rendered_argocd_values_otel_enabled = replace( + local.rendered_argocd_values_gatekeeper, + "placeholder_otel_enabled", + local.otel_enabled_string + ) + + rendered_argocd_values_otel_extension_config = replace( + local.rendered_argocd_values_otel_enabled, + " # placeholder_otel_extension_config", + local.otel_extension_config ) + + rendered_argocd_values_otel_rbac = replace( + local.rendered_argocd_values_otel_extension_config, + " # placeholder_otel_rbac_policies", + local.otel_rbac_policies + ) + + rendered_argocd_values_otel_server_extensions = replace( + local.rendered_argocd_values_otel_rbac, + " # placeholder_otel_server_extensions", + local.otel_server_extensions + ) + + rendered_argocd_values_otel_backend_objects = replace( + local.rendered_argocd_values_otel_server_extensions, + "# placeholder_otel_backend_objects", + local.otel_backend_objects + ) + + rendered_argocd_values_otel_version = replace( + local.rendered_argocd_values_otel_backend_objects, + "placeholder_otel_extension_version", + local.otel_extension_version_trimmed + ) + + rendered_argocd_values_otel_semver = replace( + local.rendered_argocd_values_otel_version, + "placeholder_otel_extension_semver", + local.otel_extension_semver + ) + + rendered_argocd_values_otel_backend_tag = replace( + local.rendered_argocd_values_otel_semver, + "placeholder_otel_backend_tag", + local.otel_backend_tag_trimmed + ) + + rendered_argocd_values = replace( + local.rendered_argocd_values_otel_backend_tag, + "placeholder_tempo_base_url", + local.tempo_base_url_trimmed + ) +} + + +output "helm_values" { + value = local.rendered_argocd_values + + precondition { + condition = !var.otel_enabled || trimspace(var.otel_extension_version) != "" + error_message = "otel_extension_version must be non-empty when otel_enabled is true" + } + + precondition { + condition = !var.otel_enabled || length(regexall("\\s", local.otel_extension_version_trimmed)) == 0 + error_message = "otel_extension_version must not contain whitespace when otel_enabled is true" + } + + precondition { + condition = !var.otel_enabled || trimspace(var.otel_backend_tag) != "" + error_message = "otel_backend_tag must be non-empty when otel_enabled is true" + } + + precondition { + condition = !var.otel_enabled || length(regexall("\\s", local.otel_backend_tag_trimmed)) == 0 + error_message = "otel_backend_tag must not contain whitespace when otel_enabled is true" + } + + precondition { + condition = !var.otel_enabled || local.tempo_base_url_trimmed == "" || length(regexall("\\s", local.tempo_base_url_trimmed)) == 0 + error_message = "tempo_base_url must not contain whitespace when otel_enabled is true" + } }