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zlb: many LoadBalancer Services on a few public IPs, via one edge node (no BGP/L2, nodes stay off the internet)
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zlb: many LoadBalancer Services on a few public IPs, via one edge node (no BGP/L2, nodes stay off the internet)

I built zlb for clusters where: - public IPs are scarce and routed to one machine; - nodes have no inbound internet access; - there's no BGP or shared L2, so MetalLB, Cilium IPAM, and kube-vip don't fit.…

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Set up Longhorn storage for my 3-node homelab
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Set up Longhorn storage for my 3-node homelab

My 3-node Talos homelab had no persistent storage, so anything with data, like Grafana or a database, had nowhere to live. Longhorn keeps every volume on two of the three nodes, so one node can go down without losing data, and it rebuilds the missing copy…

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How gVisor sandboxes untrusted pods: a second Linux kernel, written in Go, and what it costs you

We run backend code we've never seen, from thousands of sites, on Kubernetes, and every one of those pods runs inside gVisor. Most of my day goes to it. This is the map I wish I'd had before I started sending fixes upstream.…

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Re-matching stored SBOMs of running images against OSV instead of rescanning on a schedule

A scan is a snapshot of an image against that day's advisory database. The image never changes, the database changes daily. So the only way to know if today's advisory hits last week's deployment is to scan everything again.…

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Need some suggestions

Hey y’all! I’ve been on workers’ comp for a couple of weeks, and I’m not sure if this is boredom, me contemplating a career change, or a little bit of both 😂. Since I’m not very mobile right now, I decided to dive into the homelab hobby.…

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Storing ML models as OCI artifacts in your registry: anyone running this in prod?

Instead of pulling weights from S3 at startup, we've been packaging models as OCI artifacts and pulling them by digest, the same way we pull images. That gets us signing, replication and admission policy for free.…

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A one-line gVisor bug left pods stuck in Terminating: random memory layout moved every region except one queue

Follow-up to yesterday's gVisor intro. This is the stub-memory bug I mentioned there, with the debugging steps. gVisor's systrap platform runs app code in host "stub" processes and shifts their shared memory by a random, page-aligned gap at startup, so…

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what bit you running postgres on k8s with cloudnativepg?

for people running cnpg in prod, what caught you out that you didnt see coming? one thing we noticed: a cluster with no backups configured at all still shows ContinuousArchiving=True, "Continuous archiving is working".…

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How do you run a host command on every node without SSH?

Reddit r/kubernetes·u/Silva-Engineer·3 days ago
#ps9mcIN1
#node#host#every#command#without

kubectl debug node/ puts the node's root filesystem at /host, but the pod isn't privileged, so chroot /host fails unless you add --profile=sysadmin . It also works one node at a time and leaves the pod behind until you delete it.…

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I'm working as L1 Linux System Admin. I want to learn Docker & Kubernetes in a structured way. Can you please suggest some good courses for Docker & Kubernetes which is still relevant in 2026?

I'm working as L1 Linux System Admin. I want to learn Docker & Kubernetes in a structured way. Can you please suggest some good courses for Docker & Kubernetes which is still relevant in 2026? submitted by /u/satkum1106 [link] [comments]

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One headless Service with zero Pods stopped every nginx router from starting (Monzo 2017), and why a normal Service wouldn't have

Reddit r/kubernetes·u/Interesting-Ease3774·3 days ago
#OFt8IdxB
#nginx#service#pods#router#resolves

A detail I hadn't fully appreciated until I rebuilt Monzo's 2017 outage: a normal Service always resolves (to its ClusterIP) even with no endpoints, but a headless Service ( clusterIP: None ) resolves straight to its ready Pods, so with zero Pods its name…

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No CPU limit at all, or a loose one at 4x the request? Curious what people running without limits picked.

Disclosure: I run a DevOps consultancy (MeteorOps). Nothing for sale here; my co-founder wrote the long version, link in a comment. We set CPU limits for every container, but if there's a latency-sensitive service we avoid setting any limits.…

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Lessons learned benchmarking eBPF (Grafana Beyla) vs. OTel + Linux PSI + cAdvisor for diagnosing LLM tail-latency spikes on Kubernetes

#kubernetes#redditkubernetes#pods#false#json

While investigating why quantized `llama.cpp` inference pods behind a FastAPI gateway on a 3-node `kind` cluster were experiencing sudden P95 latency spikes (500ms jumping to 30s) and HTTP 502/504 timeouts, I ran a controlled benchmark across 64…

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