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EC2 Ubuntu Instance Occasional Downtime

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i'm having trouble with an EC2 instance experiencing a long period (several hours) of downtime every day

  • instance type: t1.micro
  • availability zone: ap-southeast-2a
  • security groups: allow all ICMP, ssh (22) and http (80)
  • AMI: based on Ubuntu Server 12.04.3 LTS Server - ami-3d128f07 (64-bit)
  • software: openssh, nginx, gunicorn, django

cloudwatch metrics all look good: cpu, memory, disk, etc. and ec2 status check is 2/2 checks passed

i can still ping the machine however i can't reach it over http or ssh

once i can login to ssh (probably after a restart), where would be the best place (log, etc.) to check what is going on during those periods of downtime? everything in the syslog seems fine and dandy!


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