https://thinkinginsoftware.blogspot.com/2017/10/upgrading-kubernetes-container-pods.html
Thinking In Software: upgrading kubernetes - container pods stuck in state 'unknown'
I deleted an old pod that was sticking in our cluster without explanation and it turned into state 'unknown'. Getting logs from nodejs apps ...
software upgradingthinkingkubernetescontainerpods
https://themotoguide.com/
Modding the Motorola Razr V3 | razr mods | Razr Software Upgrading - Home
motorola razrsoftware upgradingmoddingmods
https://docs.voltactivedata.com/v10docs/AdminGuide/MaintainUpgradeVoltdb.php
4.4. Upgrading VoltDB Software
upgradingvoltdbsoftware