Installing Helm Tiller on Kubernetes via gitlab ui fails with "No such file or directory"

Summary

Clicking on "Install" button for Helm Tiller under CI/CD / Clusters generates an error about missing files.

Steps to reproduce

Clean Kubernetes install with Calico (if that's important, probably not). Fill in required fields under Cluster details. Click Install on Helm Tiller row.

What is the current bug behavior?

Install fails with:

ERROR: http://dl-cdn.alpinelinux.org/alpine/v3.6/main: temporary error (try again later)
WARNING: Ignoring APKINDEX.84815163.tar.gz: No such file or directory
ERROR: http://dl-cdn.alpinelinux.org/alpine/v3.6/community: temporary error (try again later)
WARNING: Ignoring APKINDEX.24d64ab1.tar.gz: No such file or directory
ERROR: unsatisfiable constraints:

The missing files doesn't exist at all on that URL. However, APKINDEX.tar.gz exists.

What is the expected correct behavior?

Install succeeds

Relevant logs and/or screenshots

helmtillerfail

Results of GitLab environment info

Expand for output related to GitLab environment info 
System information
System:
Current User:	git
Using RVM:	no
Ruby Version:	2.3.6p384
Gem Version:	2.6.13
Bundler Version:1.13.7
Rake Version:	12.3.0
Redis Version:	3.2.11
Git Version:	2.14.3
Sidekiq Version:5.0.5
Go Version:	unknown


GitLab information
Version:	10.4.1
Revision:	be80a97
Directory:	/opt/gitlab/embedded/service/gitlab-rails
DB Adapter:	postgresql
URL:		https://git.company.com
HTTP Clone URL:	https://git.company.com/some-group/some-project.git
SSH Clone URL:	git@git.company.com:some-group/some-project.git
Using LDAP:	no
Using Omniauth:	no


GitLab Shell
Version:	5.11.0
Repository storage paths:
  • default: /var/opt/gitlab/git-data/repositories Hooks: /opt/gitlab/embedded/service/gitlab-shell/hooks Git: /opt/gitlab/embedded/bin/git
Edited by Joakim Hansson