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INCIDENT REPORT: #882-B-FATAL STATUS: UNRESOLVED (MITIGATED BY HARD REBOOT) AUTHOR: Senior SRE (Employee #402, On-call Rotation 4) SUBJECT: The Total Collapse of the “Smart” Inference Pipeline Traceback (most recent call last): File "/usr/local/lib/python3.11/site-packages/torch/nn/modules/module.py", line 1501, in _call_impl return forward_call(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/inference/model_wrapper.py", line 84, in forward output = self.backbone(input_ids, attention_mask=mask) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/local/lib/python3.11/site-packages/torch/nn/modules/module.py", line … Read more

Stop Searching for “Cybersecurity Near Me” and Start Fixing Your Local Loopback I once took down an entire staging cluster because I thought I was being “secure.” I had just finished a marathon session of hardening our SSH configs and decided to implement a strict IP allowlist on our internal load balancer. I was tired. … Read more

May 22 14:02:11 node-01 sshd[28491]: Invalid user admin from 192.168.1.42 port 54220 May 22 14:02:11 node-01 sshd[28491]: Connection closed by authenticating user admin 192.168.1.42 port 54220 [preauth] May 22 14:02:13 node-01 sshd[28493]: Invalid user support from 192.168.1.42 port 54222 May 22 14:02:13 node-01 sshd[28493]: Connection closed by authenticating user support 192.168.1.42 port 54222 [preauth] May … Read more

[2024-05-14 03:14:22.981] KERNEL: [72104.120934] out_of_memory: Kill process 14029 (python3) score 942 or sacrifice child [2024-05-14 03:14:23.001] CUDA: [ERROR] Failed to allocate 40.2GB on Device 0. Available: 1.2GB. [2024-05-14 03:14:23.005] TRACEBACK: File “/opt/icarus/inference/engine.py”, line 442, in forward: output = self.model(input_tensor) [2024-05-14 03:14:23.009] CRITICAL: Segmentation fault (core dumped). [2024-05-14 03:14:23.012] SYSTEM: Watchdog timer expired. Hard reset initiated. … Read more

text [2024-05-22T03:15:02.482Z] ERROR: k8s-api-server: pod/checkout-service-7f8d9b6c4-x9z2q status: CrashLoopBackOff [2024-05-22T03:15:04.112Z] INFO: kubelet: Back-off restarting failed container checkout-service in pod checkout-service-7f8d9b6c4-x9z2q_prod(8d2f…) [2024-05-22T03:15:10.991Z] WARN: etcd: request “PUT /registry/services/endpoints/prod/checkout-service” took too long (1.4s) [2024-05-22T03:15:12.001Z] FATAL: controller-manager: Failed to sync node status for ip-10-0-42-11.ec2.internal: connection refused [2024-05-22T03:15:15.442Z] STACKTRACE: goroutine 4021 [running]: k8s.io/kubernetes/pkg/controller/endpoint.(*Controller).syncService… It’s 3:15 AM. My third cup of lukewarm, sludge-like … Read more

I looked at the node_modules folder today. It’s 400MB. For a landing page. We’re done playing games. Back in my day, we managed memory. We cared about the heap. We knew where every byte lived and, more importantly, when it died. Now? I walk into this “modern” repository and it’s like walking into a landfill. … Read more

text [!] The following Swift pods are not compatible with ‘React-Core’ because they do not include an umbrella header: – Folly (from ../node_modules/react-native/third-party-podspecs/Folly.podspec) – glog (from ../node_modules/react-native/third-party-podspecs/glog.podspec) /Users/admin/project/ios/Pods/Headers/Public/React-Core/React/RCTBridgeDelegate.h:12:9: error: ‘React/RCTJavaScriptLoader.h’ file not found import ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. ** BUILD FAILED ** The following build commands failed: CompileC /Users/admin/Library/Developer/Xcode/DerivedData/Project-abc/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/React-Core.build/Objects-normal/x86_64/RCTBridge.o /Users/admin/project/node_modules/react-native/React/Base/RCTBridge.m normal x86_64 objective-c com.apple.compilers.llvm.objc.1_0.compiler (1 … Read more

Python in Production: Why Your “Best Practices” Are Killing My On-Call Rotation It was 3:15 AM on a Tuesday in 2019. I was staring at a Grafana dashboard that looked like a heart attack. Our main API, a Python service handling checkout flows for a major e-commerce client, was throwing 504s across three availability zones. … Read more

The Grave We Dug with Default Dockerfiles A Technical Post-Mortem and Remediation Guide $ docker build -t api-service:latest . [+] Building 412.4s (9/12) => [internal] load build definition from Dockerfile 0.1s => [internal] load .dockerignore 0.1s => [internal] load metadata for docker.io/library/node:latest 1.2s => [1/8] FROM docker.io/library/node:latest 0.0s => [2/8] WORKDIR /app 0.5s => [3/8] … Read more

text $ kubectl get pods -n prod-core NAME READY STATUS RESTARTS AGE api-gateway-7f5d8b9-x2k9l 0/1 CrashLoopBackOff 42 14m order-processor-0 0/1 Pending 0 72h order-processor-1 0/1 Pending 0 72h payment-service-5d4f9c8-m1n2b 0/1 CreateContainerConfigError 0 12m $ kubectl describe pod order-processor-0 Events: Type Reason Age From Message —- —— —- —- ——- Warning FailedScheduling 3m (x450 over 72h) default-scheduler … Read more