Updates and recent posts about Pelagia..

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@faun shared a link, 10 months, 3 weeks ago

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Context Engineering for Agents

Context engineeringcranks an AI agent up to 11 by juggling memory like a slick OS. It writes, selects, compresses, and isolates—never missing a beat despite those pesky token limits. Nail the context, and you've got a dream team. Slip up, though, and you might trigger chaos, like when ChatGPT went r.. read more

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@faun shared a link, 10 months, 3 weeks ago

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Google Cloud donates A2A to Linux Foundation- Google Developers Blog

IntroducingAgent2Agentand brace yourself for the heavyweights—AWS, Cisco, Google, and a few more, are in on it. Their mission? Crafting the universal lingo for AI agents. It's called theA2A protocol. Finally, they're smashing the silos holding AI back... read more

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@faun shared a link, 10 months, 3 weeks ago

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Critical Linux “sudo” flaw allows any user to take over the system

Millions of Linux systems are vulnerable to a sudo flaw allowing unauthorized users to run commands as root. The bug affects Ubuntu and Fedora servers, escalates privileges to root, and requires installation of the latest sudo packages for mitigation. The flaw lies in the seldom-used sudo chroot fea.. read more

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@faun shared a link, 10 months, 3 weeks ago

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Grafana Tempo 2.8 release: memory improvements, new TraceQL features, and more

Grafana Tempo 2.8lands with a bang. Say hello toTraceQL query hints—they bump up results you care about and streamline span searches with parent span IDs. Meanwhile,compactor poolingrevamps slashes memory usage. Kiss those OOM errors goodbye. Important heads-up:serverless features are historyand the.. read more

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@faun shared a link, 10 months, 3 weeks ago

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Linux 6.16 Performance Regression Tracked Down In New Futex Code

Linux 6.16takes a36% performance nosediveon AMD EPYC 9005 all thanks toFUTEXPRIVATEHASH. The quick fix? Yank it. Engineers scramble for a smarter solution... read more

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@faun shared a link, 10 months, 3 weeks ago

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Atlassian moved 4 million Postgres databases to AWS Aurora

Atlassianpulled off a major coup, relocating 4 million Jira Postgres databases toAWS Aurora. They slashed expenses by taming CPU beasts and carved out a rock-solid 99.99% uptime. A delightful efficiency cocktail. SamsungandTSMCare brooming through some project cobwebs. Samsung's rethinking its Texas.. read more

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@faun shared a link, 10 months, 3 weeks ago

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Serving 200 million requests per day with a cgi-bin

UsingGoandRustwith CGI-style requests taps into multi-core CPU might, poking fun at long-held CGI inefficiency myths... read more

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@faun shared a link, 10 months, 3 weeks ago

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Insights from paper — Bigtable: A Distributed Storage System for Structured Data

Bigtableisn't just another footnote in Google's lineup. It dominates the data landscape, wrangling petabytes like a charm. Built for atomic row operations and sly tablet splits. Plus, it’s backed by Chubby’s fault-tolerance magic. Picture it as a NoSQL and relational database crossbreed with the fle.. read more

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@faun shared a link, 10 months, 3 weeks ago

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OpenYurt Becomes a CNCF Incubating Project

OpenYurt, a CNCF brainchild, shakes up cloud-edge orchestration. It dances with Kubernetes like Fred Astaire and partners with any vendor under the sun... read more

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@faun shared a link, 10 months, 3 weeks ago

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Understanding Network Packet Offsets & Safe Parsing in eBPF

eBPFandRustteam up to drive a network packet parser that catches packets at breakneck kernel speed. Welcome to the future of observability and security.XDPsteps in, slicing latency to the bone for real-time inspection... read more

Pelagia is a Kubernetes controller that provides all-in-one management for Ceph clusters installed by Rook. It delivers two main features:

Aggregates all Rook Custom Resources (CRs) into a single CephDeployment resource, simplifying the management of Ceph clusters.
Provides automated lifecycle management (LCM) of Rook Ceph OSD nodes for bare-metal clusters. Automated LCM is managed by the special CephOsdRemoveTask resource.

It is designed to simplify the management of Ceph clusters in Kubernetes installed by Rook.

Being solid Rook users, we had dozens of Rook CRs to manage. Thus, one day we decided to create a single resource that would aggregate all Rook CRs and deliver a smoother LCM experience. This is how Pelagia was born.

It supports almost all Rook CRs API, including CephCluster, CephBlockPool, CephFilesystem, CephObjectStore, and others, aggregating them into a single specification. We continuously work on improving Pelagia's API, adding new features, and enhancing existing ones.

Pelagia collects Ceph cluster state and all Rook CRs statuses into single CephDeploymentHealth CR. This resource highlights of Ceph cluster and Rook APIs issues, if any.

Another important thing we implemented in Pelagia is the automated lifecycle management of Rook Ceph OSD nodes for bare-metal clusters. This feature is delivered by the CephOsdRemoveTask resource, which automates the process of removing OSD disks and nodes from the cluster. We are using this feature in our everyday day-2 operations routine.