Running Sensu on OSX

create_sensu_user_group.sh

#!/bin/sh

create_sensu_user_group()
{
    # create sensu group
    set +e
        dscl . -list /Groups | grep "^_sensu" > /dev/null
        RC=$?
    set -e
    if [ "${RC}" != "0" ]; then
                last_used_gid=`dscacheutil -q group | grep gid | tail -n 1 | awk '{ print $2 }'`
        sensu_gid=`echo "$last_used_gid + 1" | bc`
        dscl . -create Groups/_sensu
        dscl . -create Groups/_sensu PrimaryGroupID $sensu_gid
    fi

    # create sensu user
    set +e
        dscl . -list /Users | grep "^_sensu" > /dev/null
        RC=$?
    set -e
    if [ "${RC}" != "0" ]; then
                sensu_gid=`dscl . -read /Groups/_sensu | awk '($1 == "PrimaryGroupID:") { print $2 }'`
        dscl . -create /Users/_sensu UniqueID $sensu_gid
        dscl . -create /Users/_sensu PrimaryGroupID $sensu_gid
        dscl . -create /Users/_sensu UserShell /usr/bin/false
    fi
}

create_sensu_user_group

io.sensu.sensu-agent.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>Label</key>
    <string>io.sensu.sensu-agent.plist</string>
    <key>UserName</key><string>_sensu</string>
    <key>GroupName</key><string>_sensu</string>
    <key>ProgramArguments</key>
    <array>
      <string>/usr/local/bin/sensu-agent</string>
      <string>start</string>
    </array>
    <key>RunAtLoad</key><true/>
    <key>KeepAlive</key><true/>
    <key>StandardOutPath</key>
    <string>/var/log/sensu/sensu-agent.log</string>
    <key>StandardErrorPath</key>
    <string>/var/log/sensu/sensu-agent.log</string>
  </dict>
</plist>