How to Install Sensu on Ubuntu?

sensu.md

Install Erlang

sudo wget http://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
sudo dpkg -i erlang-solutions_1.0_all.deb
sudo apt-get update
sudo apt-get -y install erlang-nox

Install RabittMQ

sudo wget http://www.rabbitmq.com/releases/rabbitmq-server/v3.6.0/rabbitmq-server_3.6.0-1_all.deb
sudo dpkg -i rabbitmq-server_3.6.0-1_all.deb

Configure RabittMQ for Sensu

sudo rabbitmqctl add_vhost /sensu
sudo rabbitmqctl add_user sensu secret
sudo rabbitmqctl set_permissions -p /sensu sensu ".*" ".*" ".*"

Install Redis

sudo apt-get update
sudo apt-get -y install redis-server

Install Sensu

sudo su
wget http://repos.sensuapp.org/apt/pubkey.gpg -O- | sudo apt-key add -
echo "deb     http://repositories.sensuapp.org/apt sensu main" | sudo tee /etc/apt/sources.list.d/sensu.list
CTRL + D

sudo apt-get update && sudo apt-get -y upgrade
sudo apt-get install -y sensu 
sudo apt-get install -y uchiwa

Configure Sensu

sudo wget -O /etc/sensu/config.json http://sensuapp.org/docs/0.21/files/config.json
sudo wget -O /etc/sensu/conf.d/check_disk.json http://sensuapp.org/docs/0.21/files/check_disk.json
sudo wget -O /etc/sensu/conf.d/default_handler.json http://sensuapp.org/docs/0.21/files/default_handler.json

sudo vim /etc/sensu/conf.d/check_disk.json

{
  "checks": {
    "disk": {
      "command": "echo 0",
      "interval": 10,
      "subscribers": [
        "test"
      ]
    }
  }
}

sudo chown -R sensu:sensu /etc/sensu

Config Sensu Client

sudo wget -O /etc/sensu/conf.d/client.json http://sensuapp.org/docs/0.21/files/client.json
sudo chown -R sensu:sensu /etc/sensu

Config Uchiwa

sudo vim /etc/sensu/uchiwa.json

{
  "sensu": [
    {
      "name": "test",
      "host": "127.0.0.1",
      "port": 4567,
      "timeout": 5
    }
  ],
  "uchiwa": {
    "host": "0.0.0.0",
    "port": 3000,
    "interval": 5
  }
}

Start all Services

sudo service rabbitmq-server start
sudo service sensu-server start
sudo service sensu-client start
sudo service sensu-api start
sudo service uchiwa start

goto: http://127.0.0.1:3000

Check if is all Good

sudo tail -f /var/log/sensu/sensu-server.log
sudo tail -f /var/log/sensu/sensu-api.log
sudo tail -f /var/log/sensu/sensu-client.log

Setup the management UI

cd /tmp && wget http://sensuapp.org/docs/0.13/tools/ssl_certs.tar && tar -xvf ssl_certs.tar
cd ssl_certs && ./ssl_certs.sh generate
sudo mkdir -p /etc/rabbitmq/ssl && sudo cp /tmp/ssl_certs/sensu_ca/cacert.pem /tmp/ssl_certs/server/cert.pem /tmp/ssl_certs/server/key.pem /etc/rabbitmq/ssl
sudo vi /etc/rabbitmq/rabbitmq.config

[
    {rabbit, [
    {ssl_listeners, [5671]},
    {ssl_options, [{cacertfile,"/etc/rabbitmq/ssl/cacert.pem"},
                   {certfile,"/etc/rabbitmq/ssl/cert.pem"},
                   {keyfile,"/etc/rabbitmq/ssl/key.pem"},
                   {verify,verify_peer},
                   {fail_if_no_peer_cert,true}]}
  ]}
].

sudo service rabbitmq-server restart
GOTO http://localhost:15672/#

Enable Mgmt UI
https://www.rabbitmq.com/management.html

TO install Erlang on Latest Ubuntu(15.04) dont do whats is there, instead just do: $ sudo apt-get -y install erlang

for vagrant trusty or ubunto 14.4 http://monkeyhacks.com/post/installing-rabbitmq-on-ubuntu-14-04

/etc/rabbitmq/rabbitmq.config just keep this file if are doing erlang cluster otherwise remove it

the key&repo location seems not working anymore (404)