Azure Notes

1. Recommended Certifications

  1. Azure Fundamentals

    1. Azure Administrator

    2. Azure Developer

      1. Solutions Architect

      2. DevOps Engineer

Azure-Recommended-Certifications

2. Hierarchy

diagram-resource-groups
Figure 1. Hierarchy Diagram

3. Regions / Zones

3.1. Region: Specific geographical location to host resources.

  • Advantages.

    1. High Availability.

    2. Low Latency.

    3. Global Footprint.

    4. Adherance to government regulations.

3.2. Availability Zones: One or more discrete data centers.

  • Each Availability Zone features:

    1. Independent network.

    2. Independent redundant power.

    3. Independent cooling.

  • Advantages

    1. All AZ's in a Region are connected through low-latency links.

    2. Increased fault tolerence within a region.

  • Note:

    1. Some Regions do not have Availability Zones.

    2. Regions have at most 3 Availability Zones.

4. Resource Group

  • Contains the following:

    • Virtual machine

    • Public IP address

    • Network security group

    • Virtual Network

    • Network Interface

    • SSH key

    • Disk

An example Resource Group visualized via the Resource visualizer:

Click to see an Example Resource Group visualized
Example of the Resource Visualizer

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5. VMs

5.1. Availability Set

  • A logical grouping of VMs accross both Fault domains and Update domains

    • Fault Domain - Group of VMs that share a common power source and network switch.

    • Update Domain - Group of VMs that are rebooted at the same time.

      Example: For 10 VMs create an Availability Set with 2 Fault Domains and 5 Update Domains.

      Example Azure Availabilty Set