### Chef Client and Knife `--no-listen` Flag and `listen` Config Option Chef Client and Knife have a `--no-listen` CLI option. It is only relevant when using local mode (`-z`). When this flag is given, Chef Zero does not bind to a port on localhost. The same behavior can be activated by setting `listen false` in the relevant config file. ### Chef Client, Solo, and Apply `--minimal-ohai` Flag Chef Client, Solo, and Apply all implement a `--minimal-ohai` flag. When set, Chef only runs the bare minimum necessary ohai plugins required for internal functionality. This reduces the run time of ohai and might improve Chef performance by reducing the amount of data kept in memory. Most users should NOT use this mode, however, because cookbooks that rely on data collected by other ohai plugins will definitely be broken when Chef is run in this mode. It may be possible for advanced users to work around that by using the ohai resource to collect the "missing" data during the compile phase.