Add Slack alerts for canary workflow failures#4158
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Notify #oa-marin-eng when the daily GPU or TPU canary fails on schedule. Uses slackapi/slack-github-action with the SLACK_WEBHOOK_URL secret. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Teardown should not be delayed by the Slack notification — H100 costs matter more than a few seconds of alert latency. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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## Summary - Adds a Slack notification step to both GPU (`marin-canary-ferry-cw`) and TPU (`marin-canary-ferry`) canary workflows - Fires only on scheduled runs that fail (not manual `workflow_dispatch`) - Posts to `#oa-marin-eng` via incoming webhook (`SLACK_WEBHOOK_URL` secret already set) ## Test plan - [x] `SLACK_WEBHOOK_URL` secret added to repo - [x] Webhook verified working from local curl - [ ] Verify alert appears in `#oa-marin-eng` on next canary failure (or trigger manually and check GH Actions logs for the Slack step) 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: yoblin <268258002+yoblin@users.noreply.github.com> Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
marin-canary-ferry-cw) and TPU (marin-canary-ferry) canary workflowsworkflow_dispatch)#oa-marin-engvia incoming webhook (SLACK_WEBHOOK_URLsecret already set)Test plan
SLACK_WEBHOOK_URLsecret added to repo#oa-marin-engon next canary failure (or trigger manually and check GH Actions logs for the Slack step)🤖 Generated with Claude Code