On 2020-04-29 19:55 -0400, ProfJCNash wrote:
> In updating (an older computer with) Linux Mint 18.3 I tried to add
> the repository
>
> deb https://cloud.r-project.org/bin/linux/ubuntu xenial-cran40/
>
> as per the "Download R for Linux" instructions. This gave an error
> that there was no Release.key file.
>
> After some investigation, I found that
>
> deb https://cran.r-project.org/bin/linux/ubuntu xenial-cran40/
>
> i.e., CRAN not CLOUD. With this change, I could install R 4.0.
>
> Is this a known glitch?
Dear JN,
perhaps it is a glitch ... does anyone run mirmon[1] on the R
mirrors to see which ones are old?
If you open those two addresses in a browser, you see that the
xenial-cran40 folder is only present in cran case ... These are
two different servers, which can also be seen by running curl:
rasmus@twentyfive ~ % curl -I
https://cloud.r-project.org/bin/linux/ubuntu/
HTTP/2 200
content-type: text/html;charset=ISO-8859-1
date: Thu, 30 Apr 2020 00:05:13 GMT
server: Apache/2.4.39 (Unix)
cache-control: max-age=1800
expires: Thu, 30 Apr 2020 00:35:13 GMT
x-cache: Miss from cloudfront
...
rasmus@twentyfive ~ % curl -I
https://cran.r-project.org/bin/linux/ubuntu/
HTTP/1.1 200 OK
Date: Thu, 30 Apr 2020 00:05:23 GMT
Server: Apache
Content-Type: text/html;charset=UTF-8
It is wise to point your package manager to a mirror[2] close to you
instead of a cdn, e.g. [3] or something ...
Best,
Rasmus
[1] https://spacehopper.org/mirmon/
[2] https://cran.r-project.org/mirrors.html
[3] https://mirror.las.iastate.edu/CRAN/bin/linux/ubuntu/
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