Mesh/Sensu Page

See Also: Monitoring

notes about the install and config of a sudomesh monitoring server...

Read all about Sensu here: http://sensuapp.org/docs/0.12/guide

Basics

Installed on small frame Dell PC, service tag: 2FDSGC1, green tape with info on the front.

• Debian
• 192.168.42.65
• monitor.local - (not accessible, perhaps dns is not correctly defined)
• user sudoroom:sudomesh
• The sensu web page can be accessed internally at: http://192.168.42.65:8080/# (as of 2014.07.25 no services defined)

Things to do

1. install sensu server
   1. set up SSL certificates
   2. install/config RabbitMQ
   3. install Redis
2. config monitoring for internal PCs and/or other instances - see issues, below
3. configure a set of checks to perform
   1. set up monitoring for switches?
   2. install mini-snmpd (http://wiki.openwrt.org/doc/howto/snmp.server) on mesh nodes and configure a server side check to access nodes via snmp directly. Should be no other node/client side requirement.
4. install sensu advanced admin page (https://github.com/sensu/sensu-admin)
5. install/build handlers for email, sms notifications
6. hook up performance data to charts
7. configure RabbitMQ admin web

Sensu Config Files

Look for sensu config files in:

/etc/sensu/conf.d/

api.json

{
  "api": {
    "host": "localhost",
    "port": 4567,
    "user": "admin",
    "password": "secret"
  }
}

dashboard.json

{
  "dashboard": {
    "port": 8080,
    "user": "admin",
    "password": "secret"
  }
}

rabbitmq.json

{
  "rabbitmq": {
    "ssl": {
      "cert_chain_file": "/etc/sensu/ssl/cert.pem",
      "private_key_file": "/etc/sensu/ssl/key.pem"
    },
    "host": "monitor",
    "port": 5671,
    "vhost": "/sensu",
    "user": "sensu",
    "password": "secret"
  }
}

client.json

{
  "client": {
    "name": "monitor",
    "address": "192.168.42.65",
    "subscriptions": [ "all","webservers" ]
  }
}

server.json

oops...

check_cron.json

{
  "checks": {
    "cron_check": {
      "handlers": ["default"],
      "command": "/etc/sensu/plugins/check-procs.rb -p crond -C 1 ",
      "interval": 60,
      "subscribers": [ "webservers" ]
    }
  }
}

Issues

Installing Sensu on dev exit node

Trying to get the sensu client install on the dev exit node, exit1.sudomesh.org (192.157.221.200). Could not successfully run these commands as sudo:

notes from this page: http://sensuapp.org/docs/0.12/packages

wget -q http://repos.sensuapp.org/apt/pubkey.gpg -O- | sudo apt-key add - 
echo "deb     http://repos.sensuapp.org/apt sensu main" > /etc/apt/sources.list.d/sensu.list
apt-get update
apt-get install sensu