How do you link an existing wiki to a confluence space

[Accolent Support Manager]

We have an existing wiki, we'd like to make available to JSD using Confluence

[Brant Schroeder]

If you would like information to be searchable in JIRA service desk that is in another wiki you will have to migrate that into Confluence.  there might also be a plugin. You can learn more about migrating content here: https://confluence.atlassian.com/conf51/importing-content-into-confluence-336169436.html

If it is already in a Confluence Space you could move it to your service desk knowledge base space in Confluence or just point service desk to that space as your knowledge base.