问题描述
我遇到了一个问题，我无法使用 DNS 名称在 red hat ec2 实例上安装我的 EFS.它抛出错误 mount.nfs4: Failed to resolve server us-east-1a.fs-c2aXXXX.efs.us-east-1.amazon aws.com: Name or service not known
I am having an issue where I am unable to mount my EFS on red hat ec2 instance using the DNS names. It throws error mount.nfs4: Failed to resolve server us-east-1a.fs-c2aXXXX.efs.us-east-1.amazon aws.com: Name or service not known
我正在遵循 AWS 提供的说明.我尝试了以下两种方法来做到这一点，并且都抛出了上述相同的错误.我可以确认 DNS 名称是正确的.
I am following the instructions provided by AWS. I tried below two ways to do it and both throw the same above error. I can confirm that the DNS names are correct.
第一个---
mount -t nfs4 -o nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport fs-c2aXXXX.efs.us-east-1.amazonaws.com:/ efs
第二个--
mount -t nfs4 -o nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2 $(curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone).fs-c2a7XXXX.efs.us-east-1.amazonaws.com:/ /efs
但是，如果我使用 IP 而不是 DNS 名称，我可以很好地安装它.所以下面的命令有效.
However, if I use IP instead of DNS names, I am able to mount it just fine. So below command works.
mount -t nfs4 -o
nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport 10.38.X.XX:/ /efs
我可以使用 IP 而不是 DNS，只要我能够安装它.
I am fine with using IP instead of DNS as long as I am able to mount it.
现在我的问题是一旦我停止并再次启动实例，我的坐骑就消失了.即使在我将以下条目添加到 /etc/fstab 之后，它也不会自动挂载.
Now my issue is as soon as I stop and start the instance again, my mount is gone. Even after I add the below entry to the /etc/fstab ,it doesn't do auto mount.
10.38.X.XXX:/ /efs efs defaults,_netdev 0 0
有人可以帮助我解决 DNS 问题或告诉我如何使用 Ips 自动挂载吗?
Can someone please help me in either resolving the issue with DNS or tell me how to auto mount using Ips ?
提前感谢 Guyz.
推荐答案
要从命令行附加到 EFS，请将其用作模板，将 fs-12345678 替换为您的 ID:
To attach to EFS from the command line use this as your template, replacing fs-12345678 with your id:
$ sudo mount -t efs fs-12345678:/ /efs
在您的 /etc/fstab 中使用它(不要在它后面添加 .efs.us-east-1.amazonaws.com)
Use this in your /etc/fstab (do not add .efs.us-east-1.amazonaws.com after it)
fs-12345678:/ /efs efs vers=4.1,rw,tls,_netdev,relatime,acl,nofail 0 0
fstab 版本还为数据传输开启加密.查看资源以获取更多信息
The fstab version also turns on encryption for data transport. Check out the resource for more information
资源
https://docs.aws.amazon.com/efs/latest/ug/mounting-fs.htmlhttps://docs.aws.amazon.com/efs/latest/ug/troubleshooting-efs-mounting.html#automount-fails
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