Niklas Ye
ca2cd2c645
A self-contained demo kit: a TerdutServer against a throwaway, bare Postgres (bring-your-own DSN -- simplest path to stand up from nothing, ROADMAP.md Stage 1's own note), two TerdutTeams, and each team's own TerdutEscalationRule/TerdutDeadmanSwitch/TerdutAlertSource, so every CRD this operator manages is exercised together rather than in isolation the way config/samples' one-of-each already does. fire-alerts.sh sends terdut-server's own amPayload/amAlert shape (read from internal/api/alertmanager.go in that repo, not guessed from its docs) at whichever TerdutAlertSource's generated webhook Secret it reads the key out of -- high-cpu/disk-full/pod-crash scenarios to open and resolve incidents, and a heartbeat scenario matching each team's dead man's switch matcher, so stopping it demonstrates the switch noticing silence on its own. Verified server-side (kubectl apply --dry-run=server -k examples/demo) against this operator's own dev cluster, which already has these CRDs installed: every object validates. The one warning that cluster's "restricted" PodSecurity raises (postgres:17-alpine's entrypoint needs to start as root before it drops privileges itself) is noted inline in 00-postgres.yaml rather than worked around -- not a real production pattern, and this Postgres exists only to be thrown away with the rest of the demo namespace. README.md walks through: applying, watching status, why a few early CrashLoopBackOff restarts on terdut-demo itself are expected (this operator's Deployment template has no wait-for-postgres init container yet, unlike charts/terdut-server's chart as of v0.33.2), reaching the web UI (port-forward -- spec.networking.hostname is accepted but nothing creates an HTTPRoute for it yet), turning on open signup with the operator's own generated admin token since the bootstrap-created account has no password, firing alerts, and tearing down.
92 lines
2.9 KiB
YAML
92 lines
2.9 KiB
YAML
# Demo-only Postgres: a bare Deployment+Service+Secret, not the Zalando
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# postgres-operator path (DatabaseSpec.postgresClusterRef, DESIGN.md §8).
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# Bring-your-own DSN is the simpler of the two paths to stand up from
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# nothing (ROADMAP.md Stage 1's own note), which is all this needs to be.
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#
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# emptyDir, one replica, a password sitting in a plaintext Secret below --
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# none of that is how you'd run Postgres for real. It exists only so
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# 01-server.yaml has something to talk to. Throw the whole demo namespace
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# away when you're done; nothing here is meant to survive that.
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apiVersion: v1
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kind: Secret
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metadata:
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name: terdut-demo-postgres
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type: Opaque
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stringData:
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password: demo-not-a-real-password
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---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: terdut-demo-postgres
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labels:
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app: terdut-demo-postgres
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spec:
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replicas: 1
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# Recreate, not RollingUpdate: emptyDir means a new pod starts with an
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# empty database anyway, and two Postgres pods would never agree on one
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# emptyDir each.
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strategy:
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type: Recreate
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selector:
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matchLabels:
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app: terdut-demo-postgres
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template:
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metadata:
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labels:
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app: terdut-demo-postgres
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spec:
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containers:
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- name: postgres
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image: postgres:17-alpine
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# Partial, deliberately: the official image's entrypoint needs to
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# start as root to chown the data directory before it drops
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# privileges itself (gosu, to the postgres user) -- forcing
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# runAsNonRoot here would just refuse to start the container. A
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# "restricted" PodSecurity namespace warns on that gap rather
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# than blocking (confirmed server-side against this operator's
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# own dev cluster), which is an acceptable tradeoff for Postgres
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# that exists only to be thrown away with the rest of this demo.
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securityContext:
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allowPrivilegeEscalation: false
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capabilities:
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drop: ["ALL"]
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seccompProfile:
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type: RuntimeDefault
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ports:
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- name: postgres
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containerPort: 5432
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env:
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- name: POSTGRES_USER
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value: terdut
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- name: POSTGRES_DB
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value: terdut
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- name: POSTGRES_PASSWORD
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valueFrom:
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secretKeyRef:
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name: terdut-demo-postgres
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key: password
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volumeMounts:
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- name: data
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mountPath: /var/lib/postgresql/data
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subPath: pgdata
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readinessProbe:
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exec:
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command: ["pg_isready", "-U", "terdut"]
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initialDelaySeconds: 5
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volumes:
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- name: data
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emptyDir: {}
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: terdut-demo-postgres
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spec:
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selector:
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app: terdut-demo-postgres
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ports:
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- name: postgres
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port: 5432
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targetPort: postgres
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