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Record service drop issue
Alerts received alerts for financial drop Checking Check network dashboard, network servers’ qps are dropping to merely 0 login to that server, check the nginx error logs finding many segfault is happending but core dump function is not enabled Countermeasure Using chef 2. Enable core dump functions for nginx services
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Kubernetes components understanding: Kube-proxy [1]
EndpointSliceCache This struct stores the simplified information about endpointslices. First keyed by svc name and secondly keyed by endpointslice name, the stored value is endpoint struct defined by kube-proxy The key component is endpointSliceTracker, it stores all the applied and pending endpoint slice in memory and will be used to update the changes. The changes…
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Start/stop instance on AWS using Lambda
prerequisites Since the free tier is going to end at the end of Janauray, to save the cost for myself, I decided to only start instance on business hours(09:00-18:00) of the day. Component Details The architecture is simple: What I need to prepare in advance is the lambda code bundle and the IAM role which…