Is it possible to invest in a vanguard life strategy portfolio in Ireland? I noticed most other European countries can but I didn't see Ireland in the list.
Which particular life strategy fund you want to invest in and whether it makes sense to invest in that fund in your particular circumstances are obviously different questions.
Vanguard do not bother marketing their funds / ETFs into the Irish market. This is due to; not worth it, too small a market, tax situation is hostile towards Irish investors.