The instances:
tools-exec-03 tools-exec-09 tools-submit tools-webgrid-04 tools-webgrid-tomcat tools-webproxy tools-webproxy-01 tools-webproxy-02
were in state "ERROR (suspending)" at https://wikitech.wikimedia.org/wiki/Special:NovaInstance, tools-exec-cyberbot and tools-exec-07 in "ERROR (ok)".
Now they show up as "ACTIVE", however ssh still does not work:
[tim@passepartout ~]$ ssh tools-submit.eqiad.wmflabs ssh_exchange_identification: Connection closed by remote host [tim@passepartout ~]$
The instances seem to reside on different virtual nodes.