I Just installed amazon linux on my windows 10 hypervisor using aws provided image from amazon. I am able to login successfully. However when I do yum install anything it just fails with error "Could not resolve host: cdn.amazonlinux.com". Following is the full snippet
[root@cloudimg yum]# yum install curl
Loaded plugins: langpacks, priorities, update-motd
https://cdn.amazonlinux.com/2/core/2.0/x86_64/f5ab60d117aab318ddc588ab7dbac074cc20ddf36a924287c55fbd593496ae79/repodata/repomd.xml?instance_id=fail®ion=URLError: [Errno 14] curl#6 - "Could not resolve host: cdn.amazonlinux.com"
Trying other mirror.
https://cdn.amazonlinux.com/2/extras/docker/18.09.9/x86_64/6f06d82b5b1fa3d35af7a537bd9f3fa1d95d238361558bbb1e6a47c219c3adb2/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: cdn.amazonlinux.com"
Trying other mirror.
amzn2extra-docker/2/x86_64/pri FAILED
https://cdn.amazonlinux.com/2/extras/docker/18.09.9/x86_64/6f06d82b5b1fa3d35af7a537bd9f3fa1d95d238361558bbb1e6a47c219c3adb2/repodata/primary.sqlite.gz: [Errno 14] curl#6 - "Could not resolve host: cdn.amazonlinux.com"
Trying other mirror.
https://cdn.amazonlinux.com/2/extras/docker/18.09.9/x86_64/6f06d82b5b1fa3d35af7a537bd9f3fa1d95d238361558bbb1e6a47c219c3adb2/repodata/primary.sqlite.gz: [Errno 14] curl#6 - "Could not resolve host: cdn.amazonlinux.com"
Trying other mirror.
One of the configured repositories failed (Amazon Extras repo for docker),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:
1. Contact the upstream for the repository and get them to fix the problem.
2. Reconfigure the baseurl/etc. for the repository, to point to a working
upstream. This is most often useful if you are using a newer
distribution release than is supported by the repository (and the
packages for the previous distribution release still work).
3. Run the command with the repository temporarily disabled
yum --disablerepo=amzn2extra-docker ...
4. Disable the repository permanently, so yum won't use it by default. Yum
will then just ignore the repository until you permanently enable it
again or use --enablerepo for temporary usage:
yum-config-manager --disable amzn2extra-docker
or
subscription-manager repos --disable=amzn2extra-docker
5. Configure the failing repository to be skipped, if it is unavailable.
Note that yum will try to contact the repo. when it runs most commands,
so will have to try and fail each time (and thus. yum will be be much
slower). If it is a very temporary problem though, this is often a nice
compromise:
yum-config-manager --save --setopt=amzn2extra-docker.skip_if_unavailable=true
failure: repodata/primary.sqlite.gz from amzn2extra-docker: [Errno 256] No more mirrors to try.
https://cdn.amazonlinux.com/2/extras/docker/18.09.9/x86_64/6f06d82b5b1fa3d35af7a537bd9f3fa1d95d238361558bbb1e6a47c219c3adb2/repodata/primary.sqlite.gz: [Errno 14] curl#6 - "Could not resolve host: cdn.amazonlinux.com"
[root@cloudimg yum]#
I have tried pinging cdn.amazonlinux.com and it works just fine. Looking at the attempted URL it looks like passed instance_id and region are wrong. They may have worked within aws but with on premises install they wouldn't have any value. I have no clue where to set default values for these parameters which are attempted by yum.
Any pointer to solve this problem will be much appreciated. My need is to try something on aws linux on my local system before I plan anything on AWS itself. Local development R&D on my laptop hosted aws linux image is much faster for my needs.