CompTIA Cloud+: Cloud Troubleshooting Methodologies

IN THIS COURSE

• 1.  Course Overview
  1m 46s
  In this video, you’ll learn more about your instructor and this course. In this course, you’ll learn to use troubleshooting methodologies to resolve common cloud problems. First, you’ll learn to resolve cloud-related issues using the troubleshooting methodology. Then, you’ll resolve network security group misconfiguration issues and common connectivity and troubleshooting tools. Finally, you’ll examine performance tuning options to help keep your services healthy and avoid the need for troubleshooting. FREE ACCESS
• 2.  Cloud Troubleshooting Methodology
  6m 55s
  In this video, you’ll learn more about the process of formulating and implementing a troubleshooting methodology in the cloud. As a subscriber of a cloud service, you must deal with a separate entity in the form of the cloud provider. This will depend on what the issue is. The lack of infrastructure can present an obstacle in terms of resolving an issue because you have no access to any infrastructure as a subscriber. FREE ACCESS
• 3.  Network Security Group Connectivity Issues
  9m 56s
  In this video, you’ll learn how to address network security group and access control list misconfigurations when troubleshooting connectivity issues. You’ll see a Network Security Group is a collection of servers that can all have the same firewall rules applied to them as a group. The implementation of your rules must be planned and implemented carefully. FREE ACCESS
• 4.  Network Connectivity Issues
  6m 58s
  In this video, you’ll examine some possible connectivity issues related to features such as peering and incorrect subnet and or incorrect IP address configuration. You’ll see this involves the interconnection of Virtual Private Cloud networks or VPC. In this context, though, VPC does not have the same context as with some other implementations. You’ll learn VPCs have subnets, route tables, an optional Internet gateway for public access, and a VPC endpoint for private access. FREE ACCESS
• 5.  Network Configuration Connectivity Issues
  9m 4s
  In this video, you’ll examine different components of network connectivity to consider when troubleshooting networking problems. Beginning with DNS, there can be issues for subscribers and providers, because this service is required no matter your role. If you've implemented a virtual network in a public cloud and you've created host systems on that network, then you can implement your own DNS server on that network, or use a DNS service of the provider. FREE ACCESS
• 6.  Network Routing and Firewall Connectivity Issues
  9m 12s
  In this video, you’ll examine some network connectivity issues that can result from misconfigurations in routing and or firewalls. You’ll see that with routers, there are two primary types of routing. When it comes to implementing networks in the cloud, you can create multiple virtual networks and route them yourself or you can rely on routing services from the provider. FREE ACCESS
• 7.  Network Connectivity Issue Tools
  8m 16s
  In this video, you’ll look at some common network troubleshooting tools, including Ping, Traceroute, Flush DNS, ipconfig, ifconfig and NSLookup. You’ll use these to troubleshoot network connectivity issues. These tools are no different than they are in terms of implementation, in the cloud or in an internal networking environment. When it comes to troubleshooting network connectivity, you’re always dealing with some kind of remote host. FREE ACCESS
• 8.  Network Troubleshooting Tools
  4m 37s
  In this video, you’ll look at some additional tools that can be used for troubleshooting connectivity issues, beginning with ARP Ping. ARP is the address resolution protocol. It allows you to simply ping a system specifically with ARP packets. The address resolution protocol is responsible for resolving an IP address to a MAC address, or media access control address. This allows you to display all of the MAC addresses for the systems that are pinged. FREE ACCESS
• 9.  Resource Utilization Performance Tuning
  10m 17s
  In this video, you’ll look at several considerations for troubleshooting performance issues related to resource utilization such as CPU, GPU, memory, storage, and several others. When it comes to resources in the cloud and the use of virtualization, diagnosing performance issues can be more challenging because public cloud subscribers share the physical infrastructure with other tenants. However, there are still best practices to observe and tools to determine the cause of performance issues. FREE ACCESS
• 10.  Application Performance Tuning
  7m 41s
  In this video, you’ll learn how to troubleshoot common application performance issues related to the applications' use of resources, including CPU, memory, network, and I/O. Many cloud applications are designed and implemented in a modular way, with resources configured and accessed by different processes from different instances. Resource utilization must be monitored accordingly. Many cloud providers offer comprehensive diagnostic tools that are intelligent and interactive, and able to configure alerts and notifications when services fail. FREE ACCESS
• 11.  Load Balancing Performance Tuning
  7m 3s
  In this video, you’ll look at some performance issues related to the use of load balancers. This is one of the most common ways, particularly in the cloud, of enhancing the performance of an application. The load balancer is an extra component and can end up being the cause of a problem as easily as it could be the solution. When troubleshooting an application, be sure to include the load balancer in your monitoring. FREE ACCESS
• 12.  Course Summary
  47s
  In this video, you’ll summarize what you’ve learned in the course. In this course, you’ve learned to troubleshoot common cloud issues. You learned how to resolve cloud-related issues using troubleshooting methodologies. You also looked at network security group and network access control list misconfigurations and related issues, network routing and firewall troubleshooting, common network troubleshooting tools, performance tuning, by reviewing application resource utilization, and application and load balancing performance tuning. FREE ACCESS