8e39ee1078
The m12p5 idle-readiness work converged on an idle cluster, but the real T4 1M/1536 scale-up over mTLS still failed to admit new pods. Three real blockers, all invisible to the plaintext in-process tests: - CryptoProvider crash-loop: the seed-join/reseed boot path builds a blocking reqwest (rustls) HTTPS client on a dedicated boot thread BEFORE GrpcTransport::new installs the process-wide provider, so every TLS joiner panicked. Install it at the top of main(); ensure_crypto_provider() is now pub, idempotent, harmless on the plaintext standalone path. - Wrong seed scheme + target: peer_url honors an explicit URL scheme verbatim, so http:// dialed plaintext at the TLS :9500 port. Seed is now https:// AND points at the ready-only client Service (ClusterIP VIP), not the headless peers Service — so a joiner never round-robins onto a not-ready pod (incl. itself) and burns the 120s discovery window. - Too-tight poll budget: a cold status poll pays a full rustls handshake on top of DNS+TCP; under CPU contention that alone blew the 500ms budget, so the joiner timed out every poll for the whole window despite the peer being reachable. Status-poll timeout is now 5s (env: TIDAL_SEED_STATUS_TIMEOUT_MS) with a separate 2s connect timeout (dead seeds still fail fast) and debug-level logging on every discovery failure mode. Refactors riding along: - on_heartbeat takes a HeartbeatContext struct (additive fields, no silent u64 transposition) across tidal-net, election_driver, and both test hooks. - ShardReplica::applied_for_leader_shard centralizes per-source-shard keying (BUG 1) shared by the readiness drive and local_status. - idle-readiness test now asserts convergence within ½ budget — a slow-path regression (periodic self-heal / status-poll dependency) the binary budget check would otherwise wave through. New k8s T4 manifests: cluster-t4-kind kustomization + single-group topology patch; tidal-stress t4 seed/load Jobs.
112 lines
3.7 KiB
YAML
112 lines
3.7 KiB
YAML
# T4 (m12p5) — sustained load during the 3→5→3 scale (Phase B).
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#
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# A single generator holds a steady ack=quorum read+write mix for ~5 min, long
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# enough to span a scale-down (5→3) and scale-up (3→5) under load. `--skip-seed`
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# (the corpus is already registered by t4-seed-job) keeps the id space; the mix
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# carries item/embed WRITES so the transition is exercised by live quorum writes,
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# not just reads. `--max-error-pct 0` is the zero-acked-loss gate: a quorum write
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# that cannot reach its majority during a membership change fails to ack → error
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# → the Job exits non-zero. `--json-summary` captures the per-stage p99 envelope
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# (before / during / after the scale) for the evidence table.
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#
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# NO --poll-status: this phase is UNDER LOAD (the idle-readiness isolation is the
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# separate idle Phase A driven from the host), so status polling is unneeded and
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# omitted to keep the offered load pure.
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#
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# Apply: kubectl apply -f tidal-stress/k8s/t4-load-job.yaml
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# Watch: kubectl logs -f job/tidal-stress-t4-load -n tidaldb-cluster
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apiVersion: batch/v1
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kind: Job
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metadata:
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name: tidal-stress-t4-load
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namespace: tidaldb-cluster
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labels:
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app.kubernetes.io/name: tidal-stress
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app.kubernetes.io/part-of: tidaldb
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spec:
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backoffLimit: 0
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ttlSecondsAfterFinished: 7200
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template:
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metadata:
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labels:
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app.kubernetes.io/name: tidal-stress
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app.kubernetes.io/part-of: tidaldb
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spec:
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restartPolicy: Never
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automountServiceAccountToken: false
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securityContext:
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runAsNonRoot: true
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runAsUser: 1000
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runAsGroup: 1000
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seccompProfile:
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type: RuntimeDefault
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containers:
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- name: stress
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image: tidaldb-stress:m12p4-local
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imagePullPolicy: IfNotPresent
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args:
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- --target
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- https://tidaldb-0.tidaldb-peers.tidaldb-cluster.svc.cluster.local:9500
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- --target
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- https://tidaldb-1.tidaldb-peers.tidaldb-cluster.svc.cluster.local:9500
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- --target
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- https://tidaldb-2.tidaldb-peers.tidaldb-cluster.svc.cluster.local:9500
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- --ca-cert
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- /etc/tidaldb/tls/ca.crt
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- --ack
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- quorum
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- --skip-seed
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- --corpus
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- "10000"
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- --embedding-dim
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- "1536"
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- --users
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- "100000"
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# ~5 min steady hold: three 100s stages so the per-stage JSON gives a
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# before / during / after p99 read across the scale window.
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- --ramp
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- "400:100,400:100,400:100"
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- --mix
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- "feed=4,search=1,view=2,like=1,item=1,embed=1"
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- --max-inflight
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- "2000"
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- --json-summary
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- /tmp/t4-load-summary.json
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- --max-error-pct
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- "0"
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env:
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- name: TIDAL_API_KEY
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valueFrom:
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secretKeyRef:
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name: tidaldb-credentials
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key: TIDAL_API_KEY
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- name: TIDAL_STRESS_LOG
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value: warn
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resources:
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requests:
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cpu: 500m
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memory: 256Mi
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limits:
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cpu: "3"
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memory: 1Gi
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securityContext:
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allowPrivilegeEscalation: false
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readOnlyRootFilesystem: true
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capabilities:
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drop: ["ALL"]
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volumeMounts:
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- name: cluster-tls
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mountPath: /etc/tidaldb/tls
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readOnly: true
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- name: tmp
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mountPath: /tmp
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volumes:
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- name: cluster-tls
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secret:
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secretName: tidaldb-cluster-tls
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items:
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- key: ca.crt
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path: ca.crt
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- name: tmp
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emptyDir: {}
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