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Add Redpanda critical upstream failure detection rule#62

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Lyndon-prequel merged 6 commits intoprequel-dev:mainfrom
varshith257:cre-redpanda
Jun 15, 2025
Merged

Add Redpanda critical upstream failure detection rule#62
Lyndon-prequel merged 6 commits intoprequel-dev:mainfrom
varshith257:cre-redpanda

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@varshith257
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@varshith257 varshith257 commented Jun 6, 2025 •
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NOTE: This reproducer have been taken from redpandas official examples repo https://github.com/redpanda-data/redpanda-examples/tree/main/docker-compose

Details

Introduced a new rule for detecting when a Redpanda node becomes isolated (heartbeats fail) and triggers a Raft re-election, indicating quorum loss and leader election.

  • Updated category and tags to include high-availability and Raft/leader-election context.

Test Environment

Reproducible test setup (Maintainers invited) : Redpanda Cluster
Live CRE link: CRE Playground Link
Check here for Sample Logs

Sample Detected Patterns

[2025-06-06T05:50:30] cluster - Error occurred while sending node status request: rpc::errc::exponential_backoff
[2025-06-06T06:27:17] r/heartbeat - Received error when sending heartbeats to node 1 - rpc::errc::exponential_backoff
[2025-06-06T06:27:31] cluster - unable to get node health report from 1 - rpc::errc::disconnected_endpoint(node down), marking node as down
[2025-06-06T06:28:43] raft - vote_stm.cc:77 - vote reply from {…} - vote_granted: 1, log_ok:1
[2025-06-06T06:28:43] raft - vote_stm.cc:264 - becoming the leader term:2

Reproduction Steps

#  Bring up a 3-node Redpanda cluster
docker-compose -f docker-compose.yaml up -d

sleep 20

# Simulate node isolation (stop broker on node 2)
docker stop redpanda2

# Watch for detected patterns in broker-0’s logs
docker logs redpanda1 --tail 50 | grep -E "rpc::errc::exponential_backoff|disconnected_endpoint|vote_stm"

# Observe Raft re-election:
   # You should see “vote reply … vote_granted” followed by “becoming the leader term…” lines

/claim #59
Closes #59

@algora-pbc algora-pbc bot mentioned this pull request Jun 6, 2025
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@varshith257
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varshith257 commented Jun 7, 2025

@tonymeehan Can i have your eye on this 😄?

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Ani-4x commented Jun 7, 2025 •
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@varshith257 Heyy , can i get you help with a conflict i am facing , i saw you had the same conflicts with the tags yaml files, can you me to resolve it ?

@varshith257
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varshith257 commented Jun 7, 2025

You need to pull or rebase your local branch with upstream main and resolve merge conflicts in your code editor

@Harsh9485
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Harsh9485 commented Jun 7, 2025

I think @tonymeehan gives a chance to new contributors. 😁

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Ani-4x commented Jun 7, 2025 •
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@varshith257 Thanks , i think it should work now.

tonymeehan
tonymeehan reviewed Jun 11, 2025
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@varshith257 varshith257 requested a review from tonymeehan June 13, 2025 08:34
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tonymeehan commented Jun 13, 2025

Looks good. Can you please rename the CRE id folder and id in the rule to CRE-2025-0092? Will avoid conflicts with rules we've merged since this PR was opened. Then should be good to go.

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varshith257 commented Jun 13, 2025

@tonymeehan Renamed CRE to 92

@Lyndon-prequel Lyndon-prequel merged commit 36f46a0 into prequel-dev:main Jun 15, 2025
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@varshith257 varshith257 deleted the cre-redpanda branch June 15, 2025 17:23
This was referenced Sep 1, 2025
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[New Rule] Redpanda: Reproduce A High-Severity Failure & Write a Detection Rule

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@varshith257 @Ani-4x @Harsh9485 @tonymeehan @Lyndon-prequel