This task is due to T214760#4941716
Icinga1001 has failed with an unspecific failure. Due to the critical nature of icinga, it was proposed during the weekly meeting (today) that we spin up a spare pool host as icinga1002, and once icinga1001 is repaired it can be returned to the spares pool.
We currently only have one dual cpu misc host, WMF7426. It is also being proposed as a new phabricator host (for the phabricator upgrade) on T215335.