Problems with Grafana repo - [Errno 14] HTTPS Error 302 - Found"

[dahorak]

There seems to be quite often some problems with Grafana repository leading to following error raised when performing tasks from tendrl-ansible.grafana-repo role[1]:

https://packagecloud.io/grafana/stable/el/6/x86_64/repodata/repomd.xml: [Errno 14] HTTPS Error 302 - Found
Trying other mirror.

 One of the configured repositories failed (grafana),
 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=grafana ...

     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 grafana
        or
            subscription-manager repos --disable=grafana

     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=grafana.skip_if_unavailable=true

failure: repodata/repomd.xml from grafana: [Errno 256] No more mirrors to try.
https://packagecloud.io/grafana/stable/el/6/x86_64/repodata/repomd.xml: [Errno 14] HTTPS Error 302 - Found

It is possible to avoid this issue by re-launching the last command yum makecache -y --disablerepo='*' --enablerepo='grafana', when fails (simply via adding following four lines at the end of the tasks/main.yml file:

diff --git a/roles/tendrl-ansible.grafana-repo/tasks/main.yml b/roles/tendrl-ansible.grafana-repo/tasks/main.yml
index 0e7ffab..c6d5b32 100644
--- a/roles/tendrl-ansible.grafana-repo/tasks/main.yml
+++ b/roles/tendrl-ansible.grafana-repo/tasks/main.yml
@@ -32,3 +32,7 @@
 - name: "WORKAROUND for issues with grafana repo: make yum cache"
   command: "yum makecache -y --disablerepo='*' --enablerepo='grafana'"
   when: rpm_key_packagecloud.changed
+  register: task_result
+  until: task_result|success
+  retries: 5
+  delay: 5

[1] https://github.com/Tendrl/tendrl-ansible/blob/master/roles/tendrl-ansible.grafana-repo/tasks/main.yml#L32