Linux Server Response Monitor
The Linux Server Response Monitor is used to track the availability, and response time of the Linux server. In this monitor, administrators can use both the private, and public key to access, and issue a set of commands to the SSH server.
Completing Linux Server Response Monitor Settings
To display the settings of the Linux Server Response Monitor, click the Monitors link in the left navigation pane, or click the Create button and choose the Monitor option. A list of different monitors appears. Click the Linux Server Response Monitor link. The Create New Linux Server Response Monitor window will appear.
Fill in the monitor setting fields as explained below, and click the Add button, when the form is completed.
Enter a unique name for this monitor (up to 50 characters). To make it easier to understand, the name should be structured, and intuitive.
Enter the time interval to specify how frequently the monitor should check the Linux server response. The drop-down menu lets you specify time increments of minutes, hours, or days.
Every monitor must be associated with one monitor group. You need to create a monitor group before creating a monitor, or you can create a monitor in a default group automatically generated by the monitoring service software. Choose the desired monitor group from the drop-down menu.
For more information on monitor group, read Managing Monitor Groups
SSH Server Hostname
Enter the hostname of the Linux server that you want to monitor (e.g. www.mylinuxhost.com).
SSH Server Port
Enter the port number that the Linux server will use for communication over SSH. The default SSH server port number is 22.
Enter the SSH username that grants permission to access the server as an authorized user. You can create a username on your Linux server to permit access to monitor the response of the server.
Enter the password that you created on your Linux server. Leave this field empty if you want to use public key authorization.
Select the Use Public Key check box if you want to communicate with the Linux server via a public domain key. You will have to enter a username and password to be able to run this monitor on your Linux server, if you do not use the public key option.
Enter the commands that you want to issue to the Linux server in monitoring server response. You can add, and modify the desired commands in this field.
In this field, you can define the structure of SSH response expression. The monitor will organize, and express the response according to your settings. You can also select the Use Regexp check box, if you want to use the regular expression capability supported by different programming languages.
Choose the contacts who will have access to this monitor from the existing list. You can select one or more check boxes to choose the contacts.
You can instruct the Linux server response monitor to alert you when it detects a failure in your Linux server. Our monitoring service software offers several types of notifications, including email, and SMS. You can temporarily disable the alert configuration by choosing the desired time interval (1 to 12 hours), and selecting the Disable Alert for Next check box.
To configure alerts, choose the following parameters:
This option allows you to define when you should be alerted about a Linux server failure. You can configure the alert to notify you about any web environment failures after a specific, or consecutive number of failures occurs, according to the values configured by you. Our monitoring service software supports the immediately after a failure or after 2 to 5 consecutive failures options. You can choose your desired notification configuration.
This option lets you escalate your Linux server failure to a particular contact group, if the Linux server failure exceeds the time duration set for escalation. The monitoring service platform supports time increments from 15 minutes to 12 hours.
This option lets you choose whom to escalate to by selecting a contact name from the drop-down menu. You can also add a customized group under the Notifications link. Choose the desired group or all groups from the list.
Notify when the failure has been cleared
The notification when a Linux server failure has been cleared can be configured by choosing the desired contact group, and selecting the Notify when the failure has been cleared to check box.
Send alerts to the following notification groups
This option allows you to select the check boxes against the existing notification groups. You can select the groups to which you want the alerts to be sent.
Run command on remote server
This option allows you to specify the SSH command to run on the remote server in case of monitor check failure. Click the Show SSH Command link. The SSH Action Details form will appear. Set the details by entering the SSH server hostname, username and password from the access account. Add the SSH command, and click Save.
For more information on running commands on remote server, read Adding SSH Command Script in an Existing Monitor
Advanced Alert Escalation
The Advanced Alert Escalation option allows you to configure the alert escalation matrix up to six levels supported by the monitors. You can set different levels of alert escalation for an easy alarm management, and smooth technical coordination. To enable the advanced alert escalation matrix, select the check boxes against the escalation levels, and choose the suitable alert group that you want to receive the alert notification via the drop down menu.
For more information about on Advanced Alert Escalation, read Configuring advanced alert escalation
For more information on alerts, read How to Configure Alerts?
This configuration is used to disable the monitor during routine maintenance, or during a prolonged outage. By disabling the monitor, you can prevent alerts from being generated for this monitor. In this configuration, you can specify a time after which this monitor will be automatically re-enabled.
Click the check box to activate the maintenance schedule fields. Under the schedule drop-down menu, choose either one-time option, if you want this schedule to be implemented for a single time, or choose recurring option, if you want to schedule maintenance periods on a regular basis.
Under the Time Zone field, choose the time zone in which you are located. Select the date, time,and duration of the schedule.
For more information on maintenance schedule, read How to Add Maintenance Schedule?
Monitor Estimated Monthly Cost
This is an automatic monthly cost calculator based on the settings of your monitor. Our monitoring service platform supports the monthly cost calculator function to provide an estimated costs to the client. It displays the estimated monthly credits, monthly checks, selected monitoring locations, monitoring intervals, and the number of checks per credit.
For more information on billing, read Understanding Billing
There are no advanced options for the Linux Server Response Monitor.
Monitor Execution Status
There are three major statuses that our monitoring service software supports, as given below:
The warnings and alerts are generated in case of degradation of service, and the complete failure of service, respectively. The warnings and alerts are logged in the monitor execution details as well as sent to the specified groups through emails, and SMS. The Success status is not sent out to the concerned personnel, but it is recorded in the monitor execution details. The details of website performance, and monitor check execution status can be viewed, and retrieved through the control panel of our monitoring service software platform.