Question

我使用ubuntu AMI在AWS中创建了一个ec2实例，并通过设置elsatic IP，安全组，Route 53完成了连接到域的所有必要操作。然后，我获得了PEM文件，并使用私钥将其连接到SSH。

在我安装apache2并重新启动apache服务器之前，一切正常。

然后，它显示到端口22（SSH）的连接超时

这是安全组入站规则

然后在实例日志中检查该内容位于底部

[[0;32m  OK  [0m] Started The Apache HTTP Server.
[[0;32m  OK  [0m] Started Dispatcher daemon for systemd-networkd.
[[0;32m  OK  [0m] Started Snappy daemon.
         Starting Wait until snapd is fully seeded...
[[0;32m  OK  [0m] Started Wait until snapd is fully seeded.
[[0;32m  OK  [0m] Reached target Multi-User System.
[[0;32m  OK  [0m] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Apply the settings specified in cloud-config...
[[0;32m  OK  [0m] Started Update UTMP about System Runlevel Changes.
[   13.456104] cloud-init[1033]: Cloud-init v. 18.3-9-g2e62cb8a-0ubuntu1~18.04.2 running 'modules:config' at Wed, 06 Feb 2019 12:07:07 +0000. Up 13.29 seconds.
[[0;32m  OK  [0m] Started Apply the settings specified in cloud-config.
         Starting Execute cloud user/final scripts...
[   14.093385] cloud-init[1060]: Cloud-init v. 18.3-9-g2e62cb8a-0ubuntu1~18.04.2 running 'modules:final' at Wed, 06 Feb 2019 12:07:08 +0000. Up 13.95 seconds.
[   14.108125] cloud-init[1060]: Cloud-init v. 18.3-9-g2e62cb8a-0ubuntu1~18.04.2 finished at Wed, 06 Feb 2019 12:07:08 +0000. Datasource DataSourceEc2Local.  Up 14.08 seconds
[[0;32m  OK  [0m] Started Execute cloud user/final scripts.
[[0;32m  OK  [0m] Reached target Cloud-init target.

编辑：

AMI出现了一些问题，创建了新实例并重新配置，现在一切正常。