Thanks — I hear you: your agent worker in Docker (AWS) is intermittently failing to join a LiveKit room when making outbound calls, and you want practical steps to find what’s happening on the agent side. Below I’ll (1) list the most likely causes, (2) give concrete checks and commands you can run now, and (3) ask a couple of targeted questions that will help narrow it down quickly. Likely causes (short): • Not enough available/healthy agent workers or worker overload causing dispatch timeouts. • Network latency or intermittent connectivity between AWS worker and your k8s LiveKit server. • Dispatch or room name mismatch (agent dispatched to different room). • Agent startup/cold-start delays (takes longer than dispatch timeout). • Authentication/token or configuration issues inside the container. • Agent runtime errors/crashes during initialization. Immediate troubleshooting steps to run now 1. Check agent logs (start here) ◦ Tail the agent logs for the failing attempts and look for errors like “room connection not established within 10 seconds” or startup exceptions. ◦ If you use the LiveKit CLI, run: ▪︎

lk agent logs --id <agent-id>

(or

lk agent logs --id <agent-id> --log-type=deploy

if available) ◦ If you don’t have CLI access, fetch container logs from your AWS host (e.g.,

docker logs <container>

or from your orchestrator) and search for connection, dispatch, or token errors. 1. Verify dispatches and room name ◦ Confirm the dispatch actually succeeded and check which agent instance was assigned. ▪︎

lk agent dispatch list --room <room-name>

◦ Ensure the room name used when creating the SIP/participant matches exactly the room the agent connects to. A mismatch can cause dialing to succeed but the agent not to join the intended room. 1. Increase logging / enable debug ◦ Temporarily raise agent log level to DEBUG to capture detailed connection flow and errors. ▪︎ For example, start the agent with a debug log flag or environment variable (your agent runtime’s debug option). ◦ Add or confirm structured logs around: token generation, dispatch receipt,

ctx.connect()

/

session.start()

and any retry logic. 1. Check worker availability and redundancy ◦ Ensure multiple agent workers (same

agent_name

) are running for redundancy so one busy/unavailable worker won’t block joining. ◦ Monitor worker CPU/memory and thread usage—high load can cause timeouts. 1. Look for cold-starts and initialization delays ◦ If container startup or model loading is slow, pre-warm containers or build images with models pre-downloaded so the agent is ready when dispatch arrives. 1. Network checks between AWS and your k8s cluster ◦ From your agent host, run:

ping

,

traceroute

, or

curl

against the LiveKit URL to measure latency and packet loss. ◦ Confirm any firewall/NAT rules or idle connection timeouts that might drop or delay websocket/gRPC connects. 1. Authentication / token validation ◦ Verify

LIVEKIT_API_KEY

,

LIVEKIT_API_SECRET

, and

LIVEKIT_URL

are correctly set inside the container and that tokens are not expired/invalid. ◦ Confirm your container isn’t missing required secrets or environment variables at runtime. 1. Add observability where missing ◦ Forward logs to CloudWatch/Datadog and add a simple metric or alert for “agent failed to join room” so you can correlate times with dispatch events and network issues. What I need from you to narrow this down • A sample (redacted) snippet of the agent logs around one failed join attempt and one successful join attempt — specifically the time window when the outbound call is initiated and when the dispatch is handled. • Whether you’re seeing any consistent patterns (time of day, under load, only after cold start). • Are you using the LiveKit CLI or APIs to inspect dispatch status, and can you run: ◦

lk agent dispatch list --room <room-name>

◦

lk agent logs --id <agent-id>

• Rough network numbers: average latency from your AWS host to the LiveKit server, and whether you’ve noticed any packet loss. If you prefer, share one redacted log block from a failing attempt and I’ll highlight the lines to inspect and the most likely root cause from that trace. Next steps I can help with • Interpreting the logs you paste here (I’ll point out exact error lines to act on). • Sample debug log settings to enable (depending on your agent runtime). • Recommendations for pre-warming, auto-scaling triggers, and retry logic to reduce intermittent failures. Would you be able to share the log snippet and answers to the questions above? I’ll walk through the logs with you and suggest the exact configuration changes to try. Sources: examples/frontdesk | livekit/livekit_composite | DeepWiki | Agents (Python) | livekit/livekit_composite | DeepWiki | Server options | LiveKit Documentation | Simple Call Answering Agent | LiveKit Documentation | Agents telephony integration | LiveKit Documentation