The duo have to go through a further few protocols to play.
"Settle (Kearney) and Keith Earls delight in bustle correctly as of late, expert correctly", Eire's defence coach said.
Following the game against Scotland, Ireland will also face Japan, Russia and Samoa in the remainder of the opening round.
Jack Carty is preferred to Joey Carbery on the bench, but Joe Schmidt confirmed that Munster playmaker Carbery is fully fit. "But they are very happy".
"We've had two days of training where we've probably looked our best over the period and it's kind of building and simmering up to the game that we expected because, even at the very start of the block, we really targeted this game".
Ireland's clash with Scotland could well determine the entire outcome of Pool A, with the winners hoping they can push on and top the round-robin standings.
Rory Best will captain Ireland for the 35th time.
"If you take for example this week, which is the week that matters, there's certainly a feel that's brewing of major importance to the squad", said Farrell. "So I suppose that's a culmination of what's happened over the last couple of months".
"That's what you want, them sorting things and themselves out. I actually did get involved in training on Monday, I'm still suffering from it!"
"It's your opening game of the World Cup and you are playing a team that are now ranked number one in the world".
"The weather will definitely change tactics, I would say, and we're going to have to prepare for all outcomes in terms of the weather", he said. We don't want to reach boiling point on Wednesday or Friday.
Just two weeks ago the Irish went to No 1 in the world rankings for the first time, though after a stellar 2018 they have lost three of their nine tests this year, finishing third in the Six Nations.