Install Ruby & Ruby Gems
apt-get install ruby ruby-dev
Install Sensu via Ruby Gems
gem install sensu
Add a Sensu user account
useradd sensu
Create the various Sensu directories
mkdir /etc/sensu mkdir /etc/sensu/conf.d mkdir /etc/sensu/plugins
nano -w /etc/systemd/system/sensu-client.service
[Unit] Description=sensu client [Service] User=sensu Group=sensu ExecStart=/usr/local/bin/sensu-client KillMode=process Restart=on-failure RestartSec=1min [Install] WantedBy=multi-user.target
Create the config file at /etc/sensu/config.json – this file will contain the information for connecting back to RabbitMQ
{
"transport": {
"reconnect_on_error": true
},
"rabbitmq": {
"host": "RabbitMQHost",
"vhost": "/sensu",
"user": "sensu",
"port": 5672,
"password": "RabbitMQPass"
}
}
Create the client.json file in /etc/sensu/conf.d
{
"client": {
"name": "RaspberryPiHostname",
"address": "RaspberryPiIP",
"standalone": true,
"safe_mode": true,
"keepalives": true,
"subscriptions": [ "subscriptions" ]
}
}
Create your checks file in /etc/sensu/conf.d/checks.json
{
"checks": {
"check_cpu_temp": {
"command": "/etc/sensu/plugins/check_cpu_temp.sh",
"interval": 5,
"type": "metric",
"handlers": ["handler_graphite"],
"standalone": true,
"safe_mode": true
}
}
systemctl start sensu-client
systemctl enable sensu-client