Storage
Monitor Backblaze B2 with MrCron
MrCron tracks Backblaze B2 bucket counts, total object count, and storage bytes every 5 minutes so you can watch cheap object storage next to your compute and CDN.
How MrCron monitors Backblaze B2
- Bucket count on your Backblaze B2 account.
- Total file count across all buckets.
- Storage bytes used across all buckets.
- Auth-failure detection with an amber Rotate key CTA when the application key stops working.
- Alert rules that fire on storage thresholds via any notification channel.
What you will see
Buckets total, files total, storage bytes on your project card.
Auth flow: API Key. Credentials are stored encrypted at rest with AES-256-GCM and never returned to your browser.
Start monitoring Backblaze B2
Sign in, create a project, and connect Backblaze B2 in under a minute. First check ships in the free tier.
Frequently asked questions
- What Backblaze B2 credentials does MrCron need?
- A B2 application key ID and application key with read access. MrCron stores both encrypted at rest and only decrypts them inside the sync worker.
- Does MrCron read object contents?
- No. MrCron reads bucket-level counts and byte totals only. Object contents and download URLs are never fetched.
- Are B2 download bandwidth costs tracked?
- Not yet. MrCron tracks storage size today. Egress and API-call cost tracking is a candidate for a future cycle.
- Can I alert on storage nearing a quota?
- Yes. Create an alert rule on the backblaze_b2_storage_bytes metric with a threshold near your monthly budget and route it to any notification channel.