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AWS EC2 instance randomly rebooting several times a day



2019 Community Moderator ElectionHow to get the instance id from within an ec2 instance?How to safely upgrade an Amazon EC2 instance from t1.micro to large?scp (secure copy) to ec2 instance without passwordChange key pair for ec2 instanceTrying to SSH into an Amazon Ec2 instance - permission errorEC2 instance running Rails app becomes unreachableHow do you add swap to an EC2 instance?Permission denied (publickey) when SSH Access to Amazon EC2 instanceEC2 instance has no public DNSSystem time rollback to latest reboot time on AWS EC2










0















I have a t2.nano instance that often reboots several times a day, as shown in the last reboot log:



reboot system boot 3.13.0-74-generi Tue Sep 12 17:26 - 19:15 (01:49)
reboot system boot 3.13.0-74-generi Tue Sep 12 13:58 - 19:15 (05:17)
reboot system boot 3.13.0-74-generi Tue Sep 12 11:13 - 19:15 (08:02)
reboot system boot 3.13.0-74-generi Tue Sep 12 00:48 - 19:15 (18:27)
reboot system boot 3.13.0-74-generi Fri Sep 1 23:48 - 19:15 (10+19:27)


As you can see, the server was up and running for 10 days, until it randomly reboots. It then reboots a total of 4 times over the next few hours.



There is nothing in /var/log/syslog at the time of reboot. Initially the instance is running a web server, but after the first reboot, the web server is not configured to start back up automatically. Therefore, nothing is running on my server, yet the instance still reboots several more times.



What's going on here? Is it likely that I'm being hacked or there's a problem with Amazon's servers?










share|improve this question






















  • I don't believe there's a widespread issue across multiple AWS servers that would be causing your problem; I have several t2.nano instances that have been up for hundreds of days without rebooting. Does CloudWatch reveal any suspicious metrics around the times that your instance is rebooting? What application is running on this machine? Is a t2.nano instance big enough for your application?

    – Brian
    Sep 13 '17 at 20:49
















0















I have a t2.nano instance that often reboots several times a day, as shown in the last reboot log:



reboot system boot 3.13.0-74-generi Tue Sep 12 17:26 - 19:15 (01:49)
reboot system boot 3.13.0-74-generi Tue Sep 12 13:58 - 19:15 (05:17)
reboot system boot 3.13.0-74-generi Tue Sep 12 11:13 - 19:15 (08:02)
reboot system boot 3.13.0-74-generi Tue Sep 12 00:48 - 19:15 (18:27)
reboot system boot 3.13.0-74-generi Fri Sep 1 23:48 - 19:15 (10+19:27)


As you can see, the server was up and running for 10 days, until it randomly reboots. It then reboots a total of 4 times over the next few hours.



There is nothing in /var/log/syslog at the time of reboot. Initially the instance is running a web server, but after the first reboot, the web server is not configured to start back up automatically. Therefore, nothing is running on my server, yet the instance still reboots several more times.



What's going on here? Is it likely that I'm being hacked or there's a problem with Amazon's servers?










share|improve this question






















  • I don't believe there's a widespread issue across multiple AWS servers that would be causing your problem; I have several t2.nano instances that have been up for hundreds of days without rebooting. Does CloudWatch reveal any suspicious metrics around the times that your instance is rebooting? What application is running on this machine? Is a t2.nano instance big enough for your application?

    – Brian
    Sep 13 '17 at 20:49














0












0








0


1






I have a t2.nano instance that often reboots several times a day, as shown in the last reboot log:



reboot system boot 3.13.0-74-generi Tue Sep 12 17:26 - 19:15 (01:49)
reboot system boot 3.13.0-74-generi Tue Sep 12 13:58 - 19:15 (05:17)
reboot system boot 3.13.0-74-generi Tue Sep 12 11:13 - 19:15 (08:02)
reboot system boot 3.13.0-74-generi Tue Sep 12 00:48 - 19:15 (18:27)
reboot system boot 3.13.0-74-generi Fri Sep 1 23:48 - 19:15 (10+19:27)


As you can see, the server was up and running for 10 days, until it randomly reboots. It then reboots a total of 4 times over the next few hours.



There is nothing in /var/log/syslog at the time of reboot. Initially the instance is running a web server, but after the first reboot, the web server is not configured to start back up automatically. Therefore, nothing is running on my server, yet the instance still reboots several more times.



What's going on here? Is it likely that I'm being hacked or there's a problem with Amazon's servers?










share|improve this question














I have a t2.nano instance that often reboots several times a day, as shown in the last reboot log:



reboot system boot 3.13.0-74-generi Tue Sep 12 17:26 - 19:15 (01:49)
reboot system boot 3.13.0-74-generi Tue Sep 12 13:58 - 19:15 (05:17)
reboot system boot 3.13.0-74-generi Tue Sep 12 11:13 - 19:15 (08:02)
reboot system boot 3.13.0-74-generi Tue Sep 12 00:48 - 19:15 (18:27)
reboot system boot 3.13.0-74-generi Fri Sep 1 23:48 - 19:15 (10+19:27)


As you can see, the server was up and running for 10 days, until it randomly reboots. It then reboots a total of 4 times over the next few hours.



There is nothing in /var/log/syslog at the time of reboot. Initially the instance is running a web server, but after the first reboot, the web server is not configured to start back up automatically. Therefore, nothing is running on my server, yet the instance still reboots several more times.



What's going on here? Is it likely that I'm being hacked or there's a problem with Amazon's servers?







amazon-web-services amazon-ec2






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Sep 12 '17 at 19:19









BaiBai

46511124




46511124












  • I don't believe there's a widespread issue across multiple AWS servers that would be causing your problem; I have several t2.nano instances that have been up for hundreds of days without rebooting. Does CloudWatch reveal any suspicious metrics around the times that your instance is rebooting? What application is running on this machine? Is a t2.nano instance big enough for your application?

    – Brian
    Sep 13 '17 at 20:49


















  • I don't believe there's a widespread issue across multiple AWS servers that would be causing your problem; I have several t2.nano instances that have been up for hundreds of days without rebooting. Does CloudWatch reveal any suspicious metrics around the times that your instance is rebooting? What application is running on this machine? Is a t2.nano instance big enough for your application?

    – Brian
    Sep 13 '17 at 20:49

















I don't believe there's a widespread issue across multiple AWS servers that would be causing your problem; I have several t2.nano instances that have been up for hundreds of days without rebooting. Does CloudWatch reveal any suspicious metrics around the times that your instance is rebooting? What application is running on this machine? Is a t2.nano instance big enough for your application?

– Brian
Sep 13 '17 at 20:49






I don't believe there's a widespread issue across multiple AWS servers that would be causing your problem; I have several t2.nano instances that have been up for hundreds of days without rebooting. Does CloudWatch reveal any suspicious metrics around the times that your instance is rebooting? What application is running on this machine? Is a t2.nano instance big enough for your application?

– Brian
Sep 13 '17 at 20:49













2 Answers
2






active

oldest

votes


















0














Reboots look to be taking place at 19:15
Do you have any scripts or cronjobs running that could be playing a part in it?






share|improve this answer























  • My rep isn't enough to comment on question :(

    – Kev
    Sep 12 '17 at 19:36











  • No, 19:15 is the time that I ran the last reboot command. The reboot times are 00:48, 11:13, 13:58, and 17:26.

    – Bai
    Sep 12 '17 at 21:12


















0














Try This



https://status.aws.amazon.com/



Reboots should be expected, but no more frequently than you'd expect them with commodity hardware






share|improve this answer








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    2 Answers
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    0














    Reboots look to be taking place at 19:15
    Do you have any scripts or cronjobs running that could be playing a part in it?






    share|improve this answer























    • My rep isn't enough to comment on question :(

      – Kev
      Sep 12 '17 at 19:36











    • No, 19:15 is the time that I ran the last reboot command. The reboot times are 00:48, 11:13, 13:58, and 17:26.

      – Bai
      Sep 12 '17 at 21:12















    0














    Reboots look to be taking place at 19:15
    Do you have any scripts or cronjobs running that could be playing a part in it?






    share|improve this answer























    • My rep isn't enough to comment on question :(

      – Kev
      Sep 12 '17 at 19:36











    • No, 19:15 is the time that I ran the last reboot command. The reboot times are 00:48, 11:13, 13:58, and 17:26.

      – Bai
      Sep 12 '17 at 21:12













    0












    0








    0







    Reboots look to be taking place at 19:15
    Do you have any scripts or cronjobs running that could be playing a part in it?






    share|improve this answer













    Reboots look to be taking place at 19:15
    Do you have any scripts or cronjobs running that could be playing a part in it?







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Sep 12 '17 at 19:33









    KevKev

    427




    427












    • My rep isn't enough to comment on question :(

      – Kev
      Sep 12 '17 at 19:36











    • No, 19:15 is the time that I ran the last reboot command. The reboot times are 00:48, 11:13, 13:58, and 17:26.

      – Bai
      Sep 12 '17 at 21:12

















    • My rep isn't enough to comment on question :(

      – Kev
      Sep 12 '17 at 19:36











    • No, 19:15 is the time that I ran the last reboot command. The reboot times are 00:48, 11:13, 13:58, and 17:26.

      – Bai
      Sep 12 '17 at 21:12
















    My rep isn't enough to comment on question :(

    – Kev
    Sep 12 '17 at 19:36





    My rep isn't enough to comment on question :(

    – Kev
    Sep 12 '17 at 19:36













    No, 19:15 is the time that I ran the last reboot command. The reboot times are 00:48, 11:13, 13:58, and 17:26.

    – Bai
    Sep 12 '17 at 21:12





    No, 19:15 is the time that I ran the last reboot command. The reboot times are 00:48, 11:13, 13:58, and 17:26.

    – Bai
    Sep 12 '17 at 21:12













    0














    Try This



    https://status.aws.amazon.com/



    Reboots should be expected, but no more frequently than you'd expect them with commodity hardware






    share|improve this answer








    New contributor




    Yogesh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.
























      0














      Try This



      https://status.aws.amazon.com/



      Reboots should be expected, but no more frequently than you'd expect them with commodity hardware






      share|improve this answer








      New contributor




      Yogesh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















        0












        0








        0







        Try This



        https://status.aws.amazon.com/



        Reboots should be expected, but no more frequently than you'd expect them with commodity hardware






        share|improve this answer








        New contributor




        Yogesh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.










        Try This



        https://status.aws.amazon.com/



        Reboots should be expected, but no more frequently than you'd expect them with commodity hardware







        share|improve this answer








        New contributor




        Yogesh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.









        share|improve this answer



        share|improve this answer






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        answered Mar 7 at 6:37









        Yogesh Yogesh

        1




        1




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