The Blog. From Circonus

Post-Mortem 2017.1.12.1

Post-Mortem 2017.1.12.1

TL;DR: Some users received spurious false alerts for approximately 30 minutes, starting at 2017-01-12 22:10 UTC. It is our assessment that no expected alerts were missed. There was no data loss. Overview Due to a software bug in the ingestion pipeline specific to...

Introducing IRONdb

Software is eating the world. Devices that run that software are ubiquitous and multiplying rapidly. Without adequate monitoring on these services, operators are mostly flying blind, either relying on customers to report issues or manually jumping on boxes and spot...

Wrangling Elephants in the Cloud

Yonah Russ is a hands-on Technology Executive, System Architect, and Performance Engineer. He is founder of DonateMyFee. You can read more articles by Yonah on LinkedIn where you will also find the original version of this post. You know the elephant in the room, the...

Underneath Clean Data: Avoiding Rot

When many people talk about clean data, they are referring to data that was collected in a controlled and rigorous process where bad inputs are avoided. Dirty data has samples outside of the intended collection set or values for certain fields that may be mixed up...

Our Monitoring Tools are Lying to Us

I posted the article below to LinkedIn a few weeks back. Since it was relatively popular and relevant to the Circonus community we decided to repost to our Blog. You can find the original here. I came across this vendor blog post today extolling the virtues of...

Video: Math in Big Systems

Every year the esteemed Usenix organization holds their LISA conference. LISA has transformed slowly over the years as systems, architectures, and the nature of large-scale deployments have changed, but this year represented the largest change to date. "The format of...

Alerting on disk space the right way.

Most people that alert on disk space use an arbitrary threshold, such as "notify me when my disk is 85% full." Most people then get alerted, spend an hour trying to delete things, and update their rule to "notify me when my disk is 86% full." Sounds dumb, right? I've...