Rewindex

RewindexOutage eventsApr 1, 2021

Azure outage, Apr 1, 2021

13 vendors posted 11 incidents between 21:00 and 23:00 UTC, against about 4 incidents from 4 vendors in the same hours on an ordinary week. 4 vendors named Azure in 4 incidents (3 of them blamed it). Vendors reported an Azure outage; Azure’s own incident for this date is not in the archive.

Observed, not verified. A line means a vendor’s incident named another vendor, or started in the same window. It is not a proven cause.

Times are UTC; lags are from when the first vendor named Azure.

    5. first vendor named Azure 21:30
Named AzureNamed another vendorDid not name anyoneEach column is 30 minutes

How it spread

Vendors that named Azure, grouped by when they posted, and vendors that blamed one of the vendors Azure took down. Solid lines: the vendor named the other. Dashed: same window, not named.

Swipe sideways to see the whole diagram.

Azureown incident not archivedWithin an hour4 vendors, 3 blamed AzureLaunchDarkly, InfluxData (InfluxDB Cloud), Confluent, JFrog
Azureown incident not archivedWithin an hour4 vendors, 3 blamed AzureLaunchDarkly, InfluxData(InfluxDB Cloud), Confluent,JFrog
Rendered on the server with pele from the Mermaid source below. Each box lists the first few vendors; every vendor is listed further down.
Mermaid source
flowchart LR
  root["Azure<br/>own incident not archived"]:::inferred
  h1["Within an hour<br/>4 vendors, 3 blamed Azure<br/>LaunchDarkly, InfluxData (InfluxDB Cloud), Confluent, JFrog"]:::blames
  root --> h1

Vendors that named Azure

In their own words. “Blames” means a causal phrase sits next to the name (“due to”, “upstream provider”…).

Within an hour

4 vendors

Same window, did not name anyone

7 incidents started during the event without naming Azure or another vendor. Some are part of it, some are a normal day’s background (about 4 in these hours).

Show all 7

Detected automatically from 11 status pages opening incidents in the peak hour (normally at most 5). Mentions are matched by name in each incident’s title and updates, then classified as cause, location or integration; quoted text is the vendor’s. Vendors that share one status page are shown once.