brew services start promtail

brew services start promtail 

==> Successfully started `promtail` (label: homebrew.mxcl.pr

Related

brew install promtail
promtail --help
brew services restart promtail
brew services info promtail

See also

• Promtail, /etc/promtail/config.yml, promtail [ -check-syntax, | -version | -help ]