AWS Classroomnotes 23/Jan/2023

AWS Operations

• Status Checks of EC2
  • Launch an EC2 instance and verify the status
    
  • System Status checks are reported if there are issues with power, network etc in AWS AZ’s
  • Instance status checks are reported if the ec2 instance is unable to boot.
  • Generally the issues will be resolved by reboot
  • If the instance status checks are failing, we can troubleshoot by
    
  • Getting the system log
  • Screen shot
  • EC2 serial console Refer Here
    
  • Refer Here for trouble shooting using GRUB
• Once we launch ec2 instances and we need to update the os or applications in it, for this we perform patching.
• If we scale this problem and want to apply a patch (a necessary change)
• We need to apply patches on multiple systems at one shot not by loggining into every system individually
• The systems manager in AWS is a service which helps in acheiving remote task executions on ec2 and on-premise instances with the help of agent