The state-managed IrishGenealogy.ie, which holds indexes and (most) register images of Ireland's historical civil birth, marriage and death records, plus a variety of church records for Dublin City, County Kerry, Southwest Cork and County Carlow, is having some technical problems.
From what I can see, it's the static pages of the site that are not working, and the Home page of the site – https://www.irishgenealogy.ie/en/ – is responding with a 503 Internal error. However, the databases appear to be functioning fine. I'm able to reach both the civil records and the church records at the following links:
Civil Registration Records
Church Records
Update, 19 June: All working fine again.