Finally got around to switching my GitLab site over to HTTPS — made an ssl folder in /etc/gitlab and then placed the public/private key pair in that folder. Files named with the external URL hostname with a key and crt suffix (gitlab.rushworth.us.crt and gitlab.rushworth.us.key in my case). Then in gitlab.rb, I changed the external_url to an https:// prefix. Voila, a secure GitLab server.

Oops – forgot about the client. Adding the secure site as the remote, I get “unable to get local issuer certificate” on the git client. Since I used a CA signed certificate, I just had to put the CA public key into git’s ca bundle. If you use a self-signed certificate, I believe the certificate public key would need to be used.

Where is git’s CA bundle? Ask git:

C:\Program Files\Git\bin>git config –list
core.symlinks=false
core.autocrlf=true
core.fscache=true
color.diff=auto
color.status=auto
color.branch=auto
color.interactive=true
help.format=html
rebase.autosquash=true
http.sslcainfo=C:/Program Files/Git/mingw64/ssl/certs/ca-bundle.crt
diff.astextplain.textconv=astextplain
filter.lfs.clean=git-lfs clean — %f
filter.lfs.smudge=git-lfs smudge — %f
filter.lfs.required=true
filter.lfs.process=git-lfs filter-process
credential.helper=manager
http.sslverify=true

Edit that file with something that understands Unix new line characters and paste your CA public key at the end of the file.