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Using a Debian9 server, behind a proxy, I need to install a docker client. So to get a key I use the commands:

apt-key adv --keyserver http://WHATEVERKEYSERVERITRY --keyserver-options http-proxy="http://proxy.myclientdomain:4128" --recv-keys 7EA0A9C3F273FCD8
Executing: tmpapt-key-gpghome.BO0J96KdNM/gpg.1.sh --keyserver http://WHATEVERKEYSERVERITRY --keyserver-options http-proxy=http://proxy.myclientdomain:4128 --recv-keys 7EA0A9C3F273FCD8
gpg: keyserver receive failed: no key server available

I tryied all keyring/MIT/debian etc... keyservers I know (about 5/6) The proxy is not the cause, apt-update , ping to www.google.com & so on ... are just OK.

I think there is another root cause somewhere else... but it is not possible, really not, neither to change anything neither get infrastructure information.

So the question is: is there another method to get the key 7EA0A9C3F273FCD8 100% online, generating a file I can then copy/paste?

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    “The proxy is not in cause” — I’ve seen quite a few proxies that work fine for downloads etc. but that mess up GPG key retrieval! Jan 16 '18 at 18:19
  • ah ? thanks ... then maybe it can be in cause.... ok
    – francois P
    Jan 16 '18 at 18:26
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If all else fails, you can use

curl "https://pgp.surfnet.nl/pks/lookup?op=get&search=0x7EA0A9C3F273FCD8"

and extract the public key block from the output, for example

curl "https://pgp.surfnet.nl/pks/lookup?op=get&search=0x7EA0A9C3F273FCD8" |
awk '/^-----BEGIN/ { output = 1 }; output; /^-----END/ { output = 0 }'
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  • this method worked well for me :) thanks again
    – francois P
    Jan 17 '18 at 17:02

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