Failure of MinKNOW installation on Ubuntu 18.04

Question

[junseob.kim.83]

Hello there,

I tried to install MinKNOW on my ubuntu machine, but it kept fails. I got in trouble. Please help me. I followed instruction for installation on the nanopore community.

(1)

wget -O- https://mirror.oxfordnanoportal.com/apt/ont-repo.pub | sudo apt-key add -

I ran this command and it showed this,

https://mirror.oxfordnanoportal.com/apt/ont-repo.pub

Resolving mirror.oxfordnanoportal.com mirror.oxfordnanoportal.com)... 99.86.144.116, 99.86.144.9, 99.86.144.110, ...

Connecting to mirror.oxfordnanoportal.com mirror.oxfordnanoportal.com)|99.86.144.116|:443... connected.

ERROR: cannot verify mirror.oxfordnanoportal.com's certificate, issued by ‘CN=ePrism SSL,O=SOOSAN INT,C=KR’:

Self-signed certificate encountered.

To connect to mirror.oxfordnanoportal.com insecurely, use `--no-check-certificate'.

gpg: no valid OpenPGP data found.

Hence, I used '--no-check-certificate' option and it worked.

(2)

echo "deb http://mirror.oxfordnanoportal.com/apt bionic-stable non-free" | sudo tee /etc/apt/sources.list.d/nanoporetech.sources.list

I ran this, and it was OK.

nanoporetech.sources.list file successfully created.

(3)

Here's the problem!!!!

sudo apt-get update

I ran this command, and I got this below.

Ign:1 https://mirror.oxfordnanoportal.com/apt bionic-stable InRelease

Err:2 https://mirror.oxfordnanoportal.com/apt bionic-stable Release

Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 99.86.144.110 443]

E: The repository 'http://mirror.oxfordnanoportal.com/apt bionic-stable Release' does not have a Release file.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

There's certificate issue. How can I solve this?

I tried to update, reinstall ca-certificates..also I tried to add [trusted=true] in nanoporetech.sources.list file..

anything works......

Any suggestion??

Thanks,

Answer 1

[xonq]

See this stackexchange answer. A workaround is to run

apt-get update -o Acquire::https::mirror.oxfordnanoportal.com:apt::Verify-Peer=false

I'm not using Debian so I can't verify my format of https://mirror.oxfordnanoportal.com/apt in the above command is correct. Someone else care to chime in the proper format?

[junseob.kim.83]

Thanks for your comment. Unfortunately, it was not working. It showed exact same result with just apt-get update. Same certificate issue.

[xonq]

you could try apt-get update -o Acquire::https::mirror.oxfordnanoportal.com/apt::Verify-Peer=false or apt-get update -o Acquire::https//mirror.oxfordnanoportal.com/apt::Verify-Peer=false

otherwise run a websearch for Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification