# \#x509

**URL:** https://hub.mender.io/tag/x509/106.md

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## [Issue with x509 certificate on Ubuntu](https://hub.mender.io/t/issue-with-x509-certificate-on-ubuntu/1311)

<div class="topic-metadata">

**Author:** [@leonsgithub](https://hub.mender.io/u/leonsgithub)\
**Replies:** 5\
**Last updated:** [December 3, 2019, 2:57pm UTC](https://hub.mender.io/t/issue-with-x509-certificate-on-ubuntu/1311 "2019-12-03T14:57:33Z")

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Hi, I got the following error after a OS production installation with this command CERT\_API\_CN=$API\_GATEWAY\_DOMAIN\_NAME CERT\_STORAGE\_CN=$STORAGE\_PROXY\_DOMAIN\_NAME …/keygen Full procedure listed here: https://docs.men…