Agents Administration - Tests
 

Default Parameters for AWSAutoScalingTest

For each Auto Scaling group, this test reports the minimum and maximum size threshold configured for that group and also the desired capacity specified for the group. Additionally, the test reveals the current number of instances in that group. By comparing the capacity thresholds with the current number of instances, administrators can tell whether/not Auto Scaling is successful in automatically resizing the group based on the demand/configuration. As an Auto Scaling group shrinks and expands automatically, the instances in the group pass through various states - pending state, standby state, terminating state, etc. With the help of this test, administrators can track the state of instances in each group.

This page depicts the default parameters that need to be configured for the AWSAutoScalingTest.

  • The TEST PERIOD list box helps the user to decide how often this test needs to be executed.

  • To monitor an Amazon EC2 instance, the eG agent has to be configured with the access key and secret key of a user with a valid AWS account. For this purpose, we recommend that you create a special user on the AWS cloud, obtain the access and secret keys of this user, and configure this test with these keys. To know the procedure for this, click here. Specify the access key and secret key so obtained in the AWS ACCESS KEY and AWS SECRET KEY text boxes. Make sure you reconfirm the access and secret keys you provide here by retyping it in the CONFIRM AWS ACCESS KEY and CONFIRM AWS SECRET KEY text boxes.

  • In some environments, all communication with the AWS EC2 cloud and its regions could be routed through a proxy server. In such environments, you should make sure that the eG agent connects to the cloud via the proxy server and collects metrics. To enable metrics collection via a proxy, specify the IP address of the proxy server and the port at which the server listens against the PROXY HOST and PROXY PORT parameters. By default, these parameters are set to none, indicating that the eG agent is not configured to communicate via a proxy, by default.

  • If the proxy server requires authentication, then, specify a valid proxy user name and password in the PROXY USER NAME and PROXY PASSWORD parameters, respectively. Then, confirm the password by retyping it in the CONFIRM PASSWORD text box. By default, these parameters are set to none, indicating that the proxy sever does not require authentication by default.

  • If a Windows NTLM proxy is to be configured for use, then additionally, you will have to configure the Windows domain name and the Windows workstation name required for the same against the PROXY DOMAIN and PROXY WORKSTATION parameters. If the environment does not support a Windows NTLM proxy, set these parameters to none.

  • In the EXCLUDE REGION text box, you can provide a comma-separated list of region names or patterns of region names that you do not want to monitor. For instance, to exclude regions with names that contain &#lsquo;east’ and ‘west’ from monitoring, your specification should be: *east*,*west*.

  • Once the necessary values have been provided, clicking on the UPDATE button will register the changes made.

When changing default configurations of tests, the values with “$” indicate variables that will be replaced by the eG system according to the specific server being managed - for instance, $hostName is the host/nickname of the target host, $port is the port number of the server being monitored. E.g., for a server xyz:80, $hostName will be changed automatically by the eG manager to “xyz*” and $port will be changed to “80” when configuring a test.