If you want to tank, you'll need a shield. 2h tanking can work for groups of weak enemies using brawler for the stacking damage shield and some aoe damage output, but against single tough targets you need the benefit of 1h+shield's defensive perks and reduced block cost.

Also, as a tank your most important attribute will be health, not resources. You need as much health as possible. For most classes, DK included, a tanking build should be splitting attribute points with 1 into magicka, 1 into stamina, and 3 into health, until maxed out, with any left over points going into health.

The attribute points arent quite as important as enchants - you'll want to get reduced stamina/feat cost or reduced spell cost on your jewelry slots, depending on which you use more of (though be aware that reduced feat cost enchants also reduce sprinting, blocking, bashing, and dodge rolling costs, so they're more useful all around). You can find armor sets with enhanced stamina/magicka regeneration or raw bonuses to your stamina/magicka to improve resource pools.

If you're dead set on using a 2hander and tanking, I'd make sure you put a 1h/shield on your second weapon slot when it becomes available at level 15. The 2hander works really well for soloing and levelling up, and you can use it as your aoe tanking weapon when fighting groups, while still having the shield for any single targets.