how can i view a gitlab issue board that spans multiple projects
Beside a third-party like kanban.leanlabs.io, recent GitLab releases do integrate a more sophisticated issue management.
See "Announcing The GitLab Issue Board " (presented here)
But it might be limited to only the current repo.
Note that with GitLab 13.6 (November 2020), this is no longer limited to a repository:
Group-level management of project integrations
In GitLab 13.3, we added the ability to enable an integration across an entire instance. With GitLab 13.6, that feature is being expanded to allow integrations to be managed at the group level as well!
Group owners can now add an integration to a group, and that integration will be inherited by all projects under that group. This has the potential for saving massive amounts of time, as many organizations have specific integrations that they want rolled out to every project they create.
A great example of this is using our Jira integration. If you’re using Jira, it’s almost always across the whole company. Some of these companies have thousands of projects and therefore had to configure each and every one of those integrations individually.
With group-level management of project integrations, you can add the integration at each parent group, reducing the amount of configuration required by orders of magnitude!
Read more in our announcement on the GitLab blog.
See Documentation and Epic.
In GitLab issues and merge requests within a group display a collection of issues and merge requests from all projects below them.
And they also have an Issue Board available, which aggregates the issues from the projects within the given group. This is currently not reflected in the documentation, and could be well worth a Pull Request in doc/user/group/index.md and doc/user/project/issue_board.md.
Using this together with group labels and milestones, which also span across all subprojects, you can create the desired board view.