PinnedhdhoanginCoccoc Engineering BlogMythical 0-link, readable file and other wonkeriesHere are some unassorted strangeness we encountered recently, while using k8s/containers on linux.Sep 13, 2023Sep 13, 2023
hdhoanginCoccoc Engineering BlogHave you seen DNS TYPE0 CLASS256?we started seeing messages like this in unbound.log, with weird CLASS256 queriesJan 19, 2023Jan 19, 2023
hdhoanginCoccoc Engineering Blogconcrete reproduction checks my thinkingI almost reported an issue, right up to the point where bisecting doesn’t reproduce it reliably.Aug 21, 2022Aug 21, 2022
hdhoanginCoccoc Engineering Blogpodman encountered selinux (it’s somewhat effective!)Jan 28, 2022Jan 28, 2022
hdhoanginCoccoc Engineering BlogQuick words on VectorToday’s a quick introduction to Timber Vector, a multi-purpose metrics&log routing toolDec 29, 2021Dec 29, 2021
hdhoanginCoccoc Engineering Blogpsmisc 23.2 killall doesn’t match long process nameslet’s use more fool-proof methodsAug 4, 2021Aug 4, 2021
hdhoangKludging AAAA for a tailnetTailscale is great. Avery Pennarun asked for questions. Here’s my question: can we get more details on IPv6 for peers in the KB, please?Jul 26, 2021Jul 26, 2021
hdhoangPSA: these DNS servers return bogus A for non-existent namesA honest resolver would say NXDOMAIN for nx.example.net:Jun 30, 2021Jun 30, 2021
hdhoanginCoccoc Engineering BlogKafka under page fault pressureThere are times to talk about failures. You can take away some reference links from our investigation so far:Jun 30, 2021Jun 30, 2021
hdhoanginCoccoc Engineering BlogAn nginx mis-ssl storyan issue we met with nginx, due to using old and deprecated ssl config directiveMar 31, 2021Mar 31, 2021
