Monitoring SSH

This article will help you get the Ssh plugin for sd-agent configured and returning metrics

Installing the ssh plugin package

Install the ssh plugin on Debian/Ubuntu:

sudo apt-get install sd-agent-ssh-check

Install the ssh plugin on RHEL/CentOS:

sudo yum install sd-agent-ssh-check

Read more about agent plugins.

Configuring the agent to monitor ssh

1. Configure the check in /etc/sd-agent/conf.d/ssh_check.yaml

init_config:

instances:
  - host: $REMOTE_HOST  # required
    username: $USERNAME # required
    password: $PASSWORD # or use private_key_file
#   private_key_file: $PATH_TO_PRIVATE_KEY
#   private_key_type:         # rsa or ecdsa; default is rsa
#   port: 22                  # default is port 22
#   sftp_check: False         # set False to disable SFTP check; default is True
#   add_missing_keys: True    # default is False

2. Restart the agent

sudo /etc/init.d/sd-agent restart

or

sudo systemctl restart sd-agent

Verifying the configuration
Execute info to verify the configuration with the following:

sudo /etc/init.d/sd-agent info 

or

/usr/share/python/sd-agent/agent.py info

If the agent has been configured correctly you'll see an output such as:

ssh
-----
  - instance #0 [OK]
  - Collected * metrics

You can also view the metrics returned with the following command:

sudo -u sd-agent /usr/share/python/sd-agent/agent.py check ssh_check

Configuring graphs

Click the name of your server from the Devices list in your Server Density account then go to the Metrics tab. Click the + Graph button on the right then choose the ssh metrics to display the graphs. The metrics will also be available to select when building dashboard graphs.

Screen_Shot_2018-01-18_at_11.46.12.png

Monitored metrics

MetricValues
sftp.response_time

The response time of SFTP
second / None
Type: float
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