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v1.0.0-2 · public · Published about 5 years ago

README
Asset Definition
Release Notes
Release Assets

Sensu Ansible Handler

Overview

A Sensu Go Handler for launching Ansible Tower Job Templates for automated
remediation.

Usage example(s)

$ sensuctl asset add sensu/sensu-ansible-handler
$ sensuctl handler create ansible --type pipe \
  --runtime-assets sensu/sensu-ansible-handler \
  --command "sensu-ansible-handler --host 127.0.0.1 --output-log-file=/var/log/sensu/sensu-backend/sensu-ansible-handler.log" \
  --timeout 10 --env-vars "ANSIBLE_TOKEN=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

NOTE: please take care to modify the --host and --output-log-file
configuration flags and the ANSIBLE_TOKEN environment variable, as needed.

For more information, please consult the --help output:

$ ./sensu-ansible-handler --help
The Sensu Go Ansible Tower handler for automated remediation.

Usage:
  sensu-ansible-handler [flags]

Flags:
  -h, --help                     help for sensu-ansible-handler
  -H, --host string              The Ansible Tower API hostname or IP address. Can also be set via the $ANSIBLE_HOST environment variable. (default "127.0.0.1")
  -i, --inventory string         The Ansible Tower Inventory name (includes Smart Inventories), used to lookup an Inventory ID; ignored if --inventory-id or $ANSIBLE_INVENTORY_ID are set.
  -I, --inventory-id string      The Ansible Tower Inventory ID (includes Smart Inventories). Can also be set via the $ANSIBLE_INVENTORY_ID environment variable.
  -L, --inventory-limit string   The Ansible Tower Inventory limit (defaults to the Sensu entity name). Can also be set via the $ANSIBLE_INVENTORY_LIMIT environment variable.
  -j, --job-template string      The Ansible Tower Job Template name, used to lookup a Job Template ID; ignored if if --job-template-id or $ANSIBLE_JOB_TEMPLATE_ID are set.
  -J, --job-template-id string   The Ansible Tower Job Template ID. Can also be set via the $ANSIBLE_JOB_TEMPLATE_ID environment variable.
  -o, --output-log-file string   Write handler output to a log file. Can also be set via the $ANSIBLE_HANDLER_LOGFILE environment variable. Defaults to stdout if not set.
  -p, --port string              The Ansible Tower API port number. Can also be set via the $ANSIBLE_PORT environment variable. (default "443")
      --protocol string          The Ansible Tower API protocol (http or https). Can also be set via the $ANSIBLE_PROTO environment variable. (default "https")
  -t, --token string             The Ansible Tower API token. Can also be set via the $ANSIBLE_TOKEN environment variable. (default "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx")

Example output

{"level":"info","msg":"INFO: No inventory host \"limit\" configured; defaulting to the Sensu Entity name: \"server-01\".\n","time":"2019-10-21T12:44:30-04:00"}
{"level":"info","msg":"INFO: requesting Job Template ID for the template named: \"Start Nginx\".\n","time":"2019-10-21T12:44:30-04:00"}
{"level":"info","msg":"INFO: 200 OK (https://127.0.0.1:443/api/v2/job_templates/).\n","time":"2019-10-21T12:44:31-04:00"}
{"level":"info","msg":"SUCCESS: found matching job template for \"Start Nginx\" with ID: \"7\".","time":"2019-10-21T12:44:31-04:00"}
{"level":"info","msg":"INFO: requesting Inventory ID for the inventory named: \"Sensu Go\".\n","time":"2019-10-21T12:44:31-04:00"}
{"level":"info","msg":"INFO: 200 OK (https://127.0.0.1:443/api/v2/inventories/).\n","time":"2019-10-21T12:44:31-04:00"}
{"level":"info","msg":"SUCCESS: found matching inventory \"Sensu Go\" with ID: \"2\".","time":"2019-10-21T12:44:31-04:00"}
{"level":"info","msg":"INFO: Launching the \"Start Nginx\" job template, targeting the \"server-01\" host (via the \"Sensu Go\" inventory).","time":"2019-10-21T12:44:31-04:00"}
{"level":"info","msg":"SUCCESS: 201 Created (https://127.0.0.1:443/api/v2/job_templates/7/launch/).\n","time":"2019-10-21T12:44:32-04:00"}

Configuration

Handler configuration

---
type: Handler
api_version: core/v2
metadata:
  name: ansible
  namespace: default
spec:
  type: pipe
  command: sensu-ansible-handler --host 127.0.0.1 --output-log-file /var/log/sensu/sensu-backend/sensu-ansible-handler.json.log
  timeout: 10
  env_vars:
  - "ANSIBLE_TOKEN=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

Check configuration

---
type: CheckConfig
api_version: core/v2
metadata:
  name: check_nginx
  namespace: default
  annotations:
    io.sensu.ansible.config.actions: |
      [
        {
          "template_name": "Start NGINX",
          "template_id": 7,
          "inventory_name": "Web Servers",
          "inventory_id": 2,
          "limit": "",
          "occurrences": [ 3 ],
          "severities": [ 1, 2 ]
        }
      ]
spec:
  command: check_http -H 127.0.0.1
  publish: true
  interval: 10
  subscriptions:
  - nginx
  timeout: 10
  handlers:
  - ansible

Ansible configuration

Sensu will require a valid auth token to communicate with the Ansible Tower API.
Please note the following instructions on how to generate/obtain a valid Ansible
Tower authorization token.

  1. Register Sensu as an Application in Ansible Tower.

    $ ANSIBLE_AUTH=$(curl -XPOST -sku ${ANSIBLE_USER}:${ANSIBLE_PASS} -H "Content-Type: application/json" \
      -d '{"organization": 1, "client_type": "confidential", "name": "Sensu Go", "authorization_grant_type": "implicit", "redirect_uris": "https://'${ANSIBLE_HOST}'/api/"}' \
      https://${ANSIBLE_HOST}/api/v2/applications/)
    
  2. Get an OAuth Token.

    $ ANSIBLE_CLIENT_ID=$(echo $ANSIBLE_AUTH | jq -r .client_id)
    $ ANSIBLE_CLIENT_SECRET=$(echo $ANSIBLE_AUTH | jq -r .client_secret)
    $ open "http://${ANSIBLE_HOST}/api/o/authorize/?response_type=token&scope=read%20write&client_id=${ANSIBLE_CLIENT_ID}"
    

References

Documentation

Development & Troubleshooting

  • Get a list of organizations by ID:

    $ curl -XGET -sku ${ANSIBLE_USER}:${ANSIBLE_PASS} -H "Content-Type: application/json" \
      "https://${ANSIBLE_HOST}/api/v2/organizations/"
    
  • Get a list of inventories:

    $ curl -XGET -sku ${ANSIBLE_USER}:${ANSIBLE_PASS} -H "Content-Type: application/json" \
      "https://${ANSIBLE_HOST}/api/v2/inventories/"
    
  • Get a list of job_templates:

    $ curl -XGET -sku ${ANSIBLE_USER}:${ANSIBLE_PASS} -H "Content-Type: application/json" \
      "https://${ANSIBLE_HOST}/api/v2/job_templates/"
    
  • Test an API Token:

    $ curl -XGET --insecure -I -H "Authorization: Bearer ${ANSIBLE_TOKEN}" \
      -H "Content-Type: application/json" \
      "https://${ANSIBLE_HOST}/api/v2/job_templates/"
    
  • Create an inventory:

    $ curl -XPOST -H "Authorization: Bearer ${ANSIBLE_TOKEN}" -H "Content-Type: application/json" \
      -d '{"name": "Sensu Go", "organization": 1}' \
      "https://${ANSIBLE_HOST}/api/v2/inventories/"
    
  • Create a host:

    $ curl -XPOST -H "Authorization: Bearer ${ANSIBLE_TOKEN}" -H "Content-Type: application/json" \
      -d '{"name": "server-01", "enabled": true, "instance_id": "", "variables": "{\"ansible_host\": \"10.0.1.101\"}"}' \
      "https://${ANSIBLE_HOST}/api/v2/inventories/2/hosts/"
    
  • Launch a job template:

    $ curl -XPOST -H "Authorization: Bearer ${ANSIBLE_TOKEN}" -H "Content-Type: application/json" \
      -d '{"inventory": 2, "limit": "server-01"}' "https://${ANSIBLE_HOST}/api/v2/job_templates/7/launch/"
    
  • Delete an application:

    $ curl -XDELETE -sku ${ANSIBLE_USER}:${ANSIBLE_PASS} -H "Content-Type: application/json" \
      "https://${ANSIBLE_HOST}/api/v2/applications/1/"
    

Roadmap

  • TODO: look at Sensu => Ansible registration handler for maintaining
    "Smart Inventories"
  • TODO: validate job template launch readiness via the GET /api/v2/job_templates/{id}/launch/ endpoint

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