Using managed instance groups

As we discussed earlier, a managed instance group is used to create and manage a collection of identical virtual machines, and we will be using one for availability and scalability purposes.

To create our regional managed instance group, follow these steps:

1. From the cloud console navigation menu, select Compute Engine | Instance groups.

   Figure 10.11 – Navigation menu: Instance groups

2. On the Instance groups page, click Create instance group.

   Figure 10.12 – Create instance group

3. Enter the following information as shown in Figure 10.13:
   • Name: tomcat-group.
   • Location: Select Multiple zones.
   • Region: Select europe-west2.
   • Instance template: tomcat-template.
   • Minimum number of instances: 3.

Figure 10.13 – Creating an instance group

4. At the bottom of the page, click Create.

   In a few minutes, our instance group will have been created and the instances started.

5. Once the instance group has been created...