I have tested the patch https://salsa.debian.org/sk-guest/monit/commit/ac71b49a08b7f6aa23c185183ab87a64cae4e913 error : Depend service 'sshd_dsa_key' is not defined in the control file
for the stable version, no template is indeed enable by default but If you install a monitoring with a template that kill a working service, imho the bug can hardly be more important for a system such as monit. at least in stable, a small fix like this is needed : 12c12,13 < depend on sshd_dsa_key > # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877633 > #depend on sshd_dsa_key that enought to avoid killing a working sshd. of course dropping the whole section related to sshd_dsa_key is also a solution :)