在FIWARE Lab中,我创建了一个 VM 实例、密钥对等,如教程中所述:
将端口 22 添加到安全组规则:
我按照说明连接到 ssh:
Open the Terminal
Locate the keypair asocciate to this Instance when launching it.
my_keypair.pem
Modify the keypair permissions in order to make it not publicly viewable.
chmod 400 my_keypair.pem
Connect to the Instance using its public IP.
ssh -i my_keypair.pem root@10.0.136.107
然而:
$ ssh -i nother-keypair.pem root@10.0.136.107
ssh: connect to host 10.0.136.107 port 22: Connection timed out
为什么会这样?我能做些什么呢?