sohka

On my side, no, I don't. I intermittently got this error message during my tests to automate my SBC's installation (from scratch). But the image and the network configuration of the SBC have been the same since the beginning. And I haven't change my network setup lately. The only idea I can think of is a network issue between your hosting provider and my ISP or maybe my ISP's DNS server giving me a wrong answer.

Hi, Since a few days, from time to time, I get a similar issue : W: The repository 'http://apt.armbian.com stretch Release' does not have a Release file. E: Failed to fetch https://apt.armbian.com/dists/stretch/main/binary-armhf/Packages server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none E: Some index files failed to download. They have been ignored, or old ones used instead. I don't know about reconfiguring ca-certificates, but by forcing apt-get to use IPv4, I could workaround the issue. But I must insist : sometimes, it works without forcing apt-get to use IPv4. echo 'Acquire::ForceIPv4 "true";' | sudo tee /etc/apt/apt.conf.d/99force-ipv4 If someone has an idea how to find out the exact root cause, I'm available to do some testing.