# Omni Gateway Logs > Parse and interpret Omni Gateway log output to surface errors, warnings, and anomalies. Use when the user shares gateway logs and wants to understand what went wrong, identify upstream connectivity failures, find TLS or authentication errors, diagnose policy evaluation problems, or get a structured summary of log activity with recommended next steps. - Skill: `mulesoft/omni-gateway-logs` (Agent Skill, multi-file: 3 files) - Install (CLI): `npx skillmds@latest add mulesoft/omni-gateway-logs` - Raw SKILL.md: https://api.skillmd.com/api/skills/mulesoft/omni-gateway-logs/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: mulesoft (https://skillmd.com/u/mulesoft) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/mulesoft/omni-gateway-logs --- # Inspect Gateway Logs ## Log Format Reference Omni Gateway produces logs in two formats depending on the deployment platform. ### Docker format ``` [component][level] message ``` Examples: ``` [flex-gateway-agent][info] Running Envoy XDS Service... [flex-gateway-agent][error] Error authorizing https://anypoint.mulesoft.com: Post "https://anypoint.mulesoft.com/accounts/oauth2/token": dial tcp 54.173.213.129:443: connect: connection timed out [flex-gateway-envoy][info] all dependencies initialized. starting workers [flex-external-processor][info] Ext Proc Server successfully started. [flex-gateway-agent][warn] Registration is using v1 version, but some metrics are only supported for v2. Please renew your registration to avoid errors. ``` ### Kubernetes format (structured) ``` LEVEL [pod-name] component - message ``` Examples: ``` 2026-02-26T22:56:56.935Z INFO [pbtest1-766cbd68f9-g2r7n] flex-gateway-agent - Running Envoy XDS Service... 2026-02-26T23:01:13.53Z ERROR [pbtest1-766cbd68f9-g2r7n] flex-gateway-agent - Error authorizing https://stgx.anypoint.mulesoft.com: Post "https://anypoint.mulesoft.com/accounts/oauth2/token": dial tcp 54.173.213.129:443: connect: connection timed out 2026-02-26T22:56:57.447Z INFO [pbtest1-766cbd68f9-g2r7n] flex-gateway-agent - Creating gateway ``` In Kubernetes, multiple pods appear in the same log stream; each line includes the pod name in brackets. ### Component glossary | Component | What it does | | -------------------------- | --------------------------------------------------------------------------------------------------------------- | | `flex-gateway-agent` | Main agent: gateway lifecycle, registration with Anypoint, config management, token refresh, control-plane sync | | `flex-gateway-envoy` | Envoy proxy: HTTP/HTTPS/gRPC routing, TLS termination, upstream connections, xDS config consumer | | `flex-gateway-fluent` | Fluent Bit: log collection and forwarding | | `flex-external-processor` | External processor (Java): handles external-processing policies | | `open-telemetry-collector` | OpenTelemetry collector: metrics and tracing export | ## Normal Startup Sequence A healthy gateway startup produces these INFO messages in order. Use this as a reference to identify where startup stalled: ``` Running Envoy XDS Service... RTMDataSource: Starting KubernetesDataSource: Starting ← Kubernetes only Creating gateway Processing commands Validating gateway Generating config Gateway: Platform=... Mode=connected ReplicaName=... Writing envoy bootstrap configuration to /var/tmp/mulesoft/flex-gateway/envoy.json RTMDataSource: Change configuration flex-gateway-envoy: Starting flex-gateway-fluent: Starting flex-external-processor: Starting all dependencies initialized. starting workers ← from flex-gateway-envoy Anypoint websocket: connected ← connected mode only open delta watch ID:1 for ...Cluster... ← xDS subscriptions active open delta watch ID:2 for ...Listener... ``` If the log cuts off before `all dependencies initialized. starting workers`, the gateway did not finish starting. ## How to Obtain Logs ### Linux (systemd) ```bash # View last 200 log lines sudo journalctl -u flex-gateway -n 200 --no-pager # Stream logs in real-time sudo journalctl -u flex-gateway -f # View logs within a time window sudo journalctl -u flex-gateway --since "2026-06-08 14:00:00" --until "2026-06-08 15:00:00" ``` ### Docker ```bash # View last 200 log lines docker logs --tail=200 flex-gateway # Stream logs in real-time docker logs -f flex-gateway # View logs with timestamps docker logs --timestamps flex-gateway ``` ### Kubernetes Replace `` and `` with the values from your cluster. If you don't know the pod name, list pods first. ```bash # Find gateway pods kubectl get pods -n -l app.kubernetes.io/name=flex-gateway # View logs from a specific pod kubectl logs -n --tail=200 # View logs from all gateway pods kubectl logs -n -l app.kubernetes.io/name=flex-gateway --all-containers=true --tail=100 # View logs from a previous (crashed) pod instance kubectl logs -n --previous # Stream logs in real-time kubectl logs -n -f ``` ## How to Enable Debug Logging To enable debug-level logs, create a Configuration resource in the user conf.d directory. Create or edit `/usr/local/share/mulesoft/flex-gateway/conf.d/logging.yaml`: ```yaml apiVersion: gateway.mulesoft.com/v1alpha1 kind: Configuration metadata: name: logging spec: logging: runtimeLogs: logLevel: debug ``` On Kubernetes, add this as a ConfigMap entry mounted into the conf.d volume. The gateway picks up the change without a restart. To revert to INFO logging, change `logLevel` to `info` or delete the Configuration resource. **Note:** There is no `flexctl` command to enable debug logging. The Configuration YAML is the only supported method and works identically in connected and local modes. ## Analysis Checklist ### Step 1 — Parse by severity Count occurrences of each severity level. Use these keywords: - **Docker:** `][error]`, `][warn]`, `][info]`, `][debug]` - **Kubernetes:** `ERROR`, `WARN`, `INFO`, `DEBUG` **Decision logic:** - Zero `error` lines and few `warn` lines → gateway is likely healthy. Report the baseline and stop unless the user is investigating a specific problem. - Any `error` lines present, or the user reports an issue → continue to Steps 2–4. ### Step 2 — Identify components Group error and warning lines by their component prefix: - `**flex-gateway-agent` errors** → registration failures, token refresh failures, Anypoint connectivity, lifecycle issues, config processing errors - `**flex-gateway-envoy` errors** → upstream connectivity, TLS, routing, or xDS config issues - `**flex-external-processor` errors** → policy execution failures (DataWeave, LDAP, ext-proc policies) - `**flex-gateway-fluent` errors** → log forwarding failures (non-critical for gateway traffic) - `**open-telemetry-collector` errors** → metrics/tracing export failures (non-critical for gateway traffic) Note which components are generating errors and at what point in the lifecycle. ### Step 3 — Deduplicate repeated errors Identical or structurally similar error messages often repeat many times. Collapse these into a single entry with a count: - Instead of: "Error authorizing [https://anypoint.mulesoft.com](https://anypoint.mulesoft.com)" repeated 14 times - Report: "**14× `flex-gateway-agent`**: `Error authorizing https://anypoint.mulesoft.com: ... connection timed out`" This separates signal from noise and makes the analysis readable. ### Step 4 — Check for known failure patterns Match errors and warnings against this table: | Log pattern | Severity | Likely cause | Next step | | ------------------------------------------------------------------------------------------------------------------------------- | ------------------------ | --------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `Error authorizing https://*.anypoint.mulesoft.com: ... connect: connection timed out` | ERROR | Gateway cannot reach Anypoint OAuth endpoint to refresh its token | Check network/firewall rules: the gateway must be able to reach `anypoint.mulesoft.com` (or the appropriate region endpoint) on port 443; verify egress rules from the pod/host | | `Max retries reached for token authorization: ...` | ERROR | Sustained failure to refresh the Anypoint OAuth token; gateway is now disconnected from the control plane | Immediate: restore connectivity to `anypoint.mulesoft.com`; gateway continues serving cached config but won't receive updates | | `Processing commands errors: (Ingress .../...: the resource is not allowed in connected mode)` | ERROR | A Kubernetes `Ingress` resource is present but the gateway is running in connected mode — Ingress is only supported in local mode | Remove the `Ingress` resource; in connected mode, use `ApiInstance` resources managed via Anypoint Runtime Manager instead | | `Registration is using v1 version, but some metrics are only supported for v2. Please renew your registration to avoid errors.` | WARN | Registration was created with an older version of `flexctl` | Re-register the gateway using the current `flexctl register` command; invoke `omni-gateway-install` skill (registration steps) | | `MetricsScheduler: flex_startup event error: ... connect: connection timed out` | WARN | Cannot report startup metrics to Anypoint (non-critical: gateway traffic is unaffected) | Check Anypoint connectivity; analytics events will be missing for this startup | | `MetricsScheduler: flex_snapshot event error: ... connect: connection timed out` | WARN | Cannot report periodic metrics to Anypoint (non-critical: gateway traffic is unaffected) | Check Anypoint connectivity; analytics data will have gaps | | `upstream connect error or disconnect/reset before headers` | ERROR (Envoy access log) | Upstream service not reachable or closed connection | Verify the `spec.services[*].address` in the ApiInstance; confirm upstream is running and accepting connections | | `TLS handshake failed` / `certificate verify failed` / `CERTIFICATE_VERIFY_FAILED` | ERROR | TLS misconfiguration, expired certificate, or incomplete certificate chain | Check certificate validity and expiration; review TLS config in conf.d | | `Deprecated field: type envoy.config.cluster.v3.Cluster Using deprecated option ... http2_protocol_options` | WARNING (Envoy) | Envoy using a deprecated internal config field | **Expected and harmless** — known issue in current Omni Gateway versions; ignore unless other problems are present | | `Token expiring soon (in ...)` | INFO | Normal Anypoint OAuth token refresh cycle | **Expected and normal** — gateway is proactively refreshing its token; not an error | ### Step 5 — If logs are truncated or incomplete If the log excerpt is cut off or covers too short a window: 1. Ask the user: when did the issue start? Request a longer window (e.g., last 1000 lines or last hour). 2. Provide the appropriate streaming or time-scoped command for their platform (see "How to Obtain Logs" above). 3. If there was a triggering event (deployment, config change, restart, traffic spike), ask the user to anchor it with a timestamp so you can focus on that window. ### Step 6 — If errors are sparse or the cause is unclear If the logs contain few errors but the user reports a problem: 1. Enable debug logging using the Configuration YAML method above. 2. Ask the user to reproduce the failing request or wait for the issue to recur. 3. Re-collect logs using the appropriate platform command. 4. Return to Step 1 with the verbose logs. Debug logs reveal timing issues, intermediate state transitions, token refresh details, and policy evaluation steps that INFO logs omit. ### Step 7 — Produce structured summary Output a structured analysis block: ``` ## Log Analysis Summary Period: – (or "unknown" if timestamps absent) Total lines analyzed: Log level: Platform: Mode: ### Severity Counts - ERROR: N - WARN: N - INFO: N - DEBUG/TRACE: N ### Component Breakdown - `flex-gateway-agent`: N lines, X errors - `flex-gateway-envoy`: N lines, X errors - `flex-external-processor`: N lines, X errors - `flex-gateway-fluent`: N lines, X errors - `open-telemetry-collector`: N lines, X errors ### Top Issues (deduplicated) 1. [Nx flex-gateway-agent] Error authorizing ... connection timed out — hypothesis 2. [Nx flex-gateway-agent] Processing commands errors: Ingress ... — hypothesis 3. ... ### Startup Completion Gateway reached "all dependencies initialized" / "Anypoint websocket: connected": YES / NO / UNKNOWN ### Root Cause Hypothesis ### Recommended Next Steps 1. 2. 3. ``` ## Related Jobs - `**omni-gateway-diagnose**` — End-to-end triage router when you need to decide which investigation path to take. - `**omni-gateway-config**` — When analysis points to a configuration issue in conf.d. - `**omni-gateway-install**` — When logs show the gateway failed to register, lost control-plane connection, or has a v1 registration warning (re-run the registration steps).