Currently,
* tools-exec-1401 and
* tools-exec-catscan
are effectively offline due to DNS issues. Their queues
```
valhallasw@tools-bastion-01:~$ qstat -f | grep 'exec-1401\|catscan'
mailq@tools-exec-1401.tools.eq BP 0/0/5 -NA- -NA- au
task@tools-exec-1401.tools.eqi BIP 0/0/50 -NA- -NA- au
continuous@tools-exec-1401.too BC 0/0/50 -NA- -NA- au
catscan@tools-exec-catscan.too BIC 0/0/1000 -NA- -NA- au
```
are all in au (alarm, unknown) state. The cause of this is that SGE actually knows the hosts as
```
valhallasw@tools-bastion-01:/data/project/admin/public_html$ qhost -h tools-exec-1401 tools-exec-catscan
HOSTNAME ARCH NCPU LOAD MEMTOT MEMUSE SWAPTO SWAPUS
-------------------------------------------------------------------------------
global - - - - - - -
tools-exec-1401.eqiad.wmflabs lx26-amd64 4 0.01 7.8G 234.0M 23.9G 0.0
tools-exec-catscan.eqiad.wmflabs lx26-amd64 4 0.01 7.8G 233.7M 1.9G 0.0
```
i.e. without .tools. in the hostname, while the queues //do// have .tools. in the hostname.
See also {T109485}