By jorgecossa
Err http://security.ubuntu.com trusty-security InRelease
Err http://security.ubuntu.com trusty-security Release.gpg Could not resolve ‘security.ubuntu.com’ Err http://mz.archive.ubuntu.com trusty InRelease
Err http://mz.archive.ubuntu.com trusty-updates InRelease
Err http://mz.archive.ubuntu.com trusty-backports InRelease
Err http://mz.archive.ubuntu.com trusty Release.gpg Could not resolve ‘mz.archive.ubuntu.com’ Err http://mz.archive.ubuntu.com trusty-updates Release.gpg Could not resolve ‘mz.archive.ubuntu.com’ Err http://mz.archive.ubuntu.com trusty-backports Release.gpg Could not resolve ‘mz.archive.ubuntu.com’ Reading package lists… Done W: Failed to fetch http://mz.archive.ubuntu.com/ubuntu/dists/trusty/InRelease
W: Failed to fetch http://mz.archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease
W: Failed to fetch http://mz.archive.ubuntu.com/ubuntu/dists/trusty-backports/InRelease
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/InRelease
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/Release.gpg Could not resolve ‘security.ubuntu.com’
W: Failed to fetch http://mz.archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg Could not resolve ‘mz.archive.ubuntu.com’
W: Failed to fetch http://mz.archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg Could not resolve ‘mz.archive.ubuntu.com’
W: Failed to fetch http://mz.archive.ubuntu.com/ubuntu/dists/trusty-backports/Release.gpg Could not resolve ‘mz.archive.ubuntu.com’
W: Some index files failed to download. They have been ignored, or old ones used instead.
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Hi, I had same issue and tried many given solution but nothing worked. It was a issue with the domains. Some files does not exists. So I replace the us repositories.
Please referrer to https://gist.github.com/h0bbel/4b28ede18d65c3527b11b12fa36aa8d1
It looks like your Droplet is having trouble looking up domain names, possibly because the DNS resolvers are misconfigured. Can you post the output of these two commands?
cat /etc/resolv.conf
sudo netstat -plutn | grep :53
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