There is no knife ssl ...
subcommand. It seems indicated that it's part and parcel of a ChefDK + knife distro but I'm unsure why it's not available.
What should I do to get the ssl subcommands available to knife?
chef-client -version Chef: 11.6.2
$ knife
...
** SEARCH COMMANDS **
knife search INDEX QUERY (options)
** SHOW COMMANDS **
knife show [PATTERN1 ... PATTERNn]
** SSH COMMANDS **
knife ssh QUERY COMMAND (options)
** STATUS COMMANDS **
knife status QUERY (options)
** TAG COMMANDS **
knife tag create NODE TAG ...
knife tag delete NODE TAG ...
knife tag list NODE
....
Those commands were added in Chef 11.12.0. Please install a newer version of ChefDK which will include an updated version of Chef.