Perth Glory came out of a first-half onslaught unscathed to steal a 1-0 victory over the New Zealand Knights in Auckland for their second win of the A-League competition.

An improved second-half in slippery conditions at North Harbour Stadium saw the visitors create more opportunities in attack to give the luckless Knights a second loss at home by converting one of them.

The goal came in the 68th minute after a succession of corners and a lob into the goalmouth which ricocheted among Glory players until defender Jamie Harnwell drilled the ball home over the goalkeeper's head.

"To get a goal at that stage of the game was pretty important. It just happened to fall to me," Harnwell said after the game.

The New Zealand side had dominated much of the first half but could not find the back of the net.

The Knights attacked relentlessly for several minutes midway through the half with at least three shots on goal in as many minutes.

Glory goalkeeper Jason Petrovic saved the first and only the crossbar prevented a Knights follow-up attempt from going in.

Striker Sean Devine missed two more opportunities soon after on the damp pitch.

Perth also missed a chance late in the half when midfielder Naum Sekulovski broke clear of the Knights defenders but couldn't get past goalkeeper Glen Moss in a one-on-one encounter.

Glory coach Steve McMahon said his team had been fortunate to come away with a win in Auckland.

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