如何将 EC2 实例启动到“安全模式”？

Question

我在EC2实例中有很多数据（svn存储库和postgresql数据库），昨天服务器没有响应http请求，我`sudo reboot'，之后服务器无法再次启动，我该怎么办?

AWS 控制台中的系统日志没有显示实例的任何输出，最近的系统日志是：

Ubuntu 9.10 domU-12-31-39-00-A0-06 tty1 

domU-12-31-39-00-A0-06 login: [1796075.232506] INFO: task rsyslogd:22423 blocked for more than 120 seconds. 

[1796075.232522] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.232509] INFO: task pdflush:17 blocked for more than 120 seconds. 

[1796195.232525] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.232639] INFO: task kjournald:296 blocked for more than 120 seconds. 

[1796195.232646] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.232728] INFO: task rsyslogd:22423 blocked for more than 120 seconds. 

[1796195.232735] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.232858] INFO: task amuled:874 blocked for more than 120 seconds. 

[1796195.232865] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.232962] INFO: task master:1716 blocked for more than 120 seconds. 

[1796195.232968] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.233065] INFO: task qmgr:1724 blocked for more than 120 seconds. 

[1796195.233071] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.233190] INFO: task java:4554 blocked for more than 120 seconds. 

[1796195.233196] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.233296] INFO: task java:4745 blocked for more than 120 seconds. 

[1796195.233302] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

[1796195.233353] INFO: task java:11614 blocked for more than 120 seconds. 

[1796195.233360] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 

看来我现在什么都做不了，我不能SSH进入它，也不能在单用户模式下操作。任何的想法？？

Answer 1

EC2 实例无法启动到安全模式。

该实例的ec2-get-console-output 的输出是什么？它可能包含有关阻止实例正常启动的原因的线索。

如果这是 EBS 支持的实例，您将能够“停止”该实例，从中分离根 EBS 卷，将根 EBS 卷附加到另一个实例并更改内容，然后将其重新附加到原始实例并“启动”它再次运行。

如果这是一个实例存储实例，那么你就不走运了 - 没有办法进入并修复其中一只小狗。