- Newest
- Most votes
- Most comments
Hi,
From looking at your stackoverflow post, I suspect the issue might be that you don't have the File System security group configured properly. Take a look at the link below for additional inbound rules to add:
https://docs.aws.amazon.com/fsx/latest/OpenZFSGuide/limit-access-security-groups.html
answered 5 years ago
I am facing the same problem. I have the same VPC, same Availability Zone, and the communication within the VPC is fully permitted (0.0.0.0.0/0 all communication) by ACL. I applied a Security Group with full permission (0.0.0.0.0/0 all communication) to the EIP attached to FSx OpenZFS just to be sure, but I cannot communicate with both ping and nfs(2049).
answered 4 years ago
[For future reference] When configuring your network and security settings, did you leave the “select route tables” option set to default, or did you include all the route tables from the dropdown menu? That’s likely the issue.
It’s possible that the Route Table associated with your FileSystem is not the same as the one used by your EC2 instance, which could be preventing you from successfully mounting it.
To check:
Go to the FileSystems section and review the Network & Security tab to identify the associated Route Table. Next, navigate to Instances, select your EC2 instance, and check its Subnet ID in the Networking tab (click on the Subnet ID link). This will show you the Route Table associated with the instance’s subnet. If the Route Tables don’t match, it’s likely that the instance is not properly configured to access the FileSystem (you can manually update the route table and retry).
Hope that helps.
Relevant content
asked 2 years ago
asked 2 years ago
asked a year ago
- AWS OFFICIALUpdated 4 years ago

Thanks Tom, I have just followed the link you were shared to create security group for Open ZFS file system. I added inbound rules custom TCP and UDP with port numbers : 111, 2049, 20001-20003 and added outbound rules to all. However, still I'm facing mount timed out error.
Any update on this? I have tried multiple time with Security group (Any where) for both EC2 and ZFS security group. However, no luck. Can any please help on this?
Hi Latchu, Happy new year! Have you tried running Reachability Analyzer, it can look at the path between your instance and the OpenZFS ENI, to determine if it is accessible based on your configuration. More details here: https://docs.aws.amazon.com/vpc/latest/reachability/getting-started.html
HI Tom, Yes i have checked with Reachability Analyzer for both TCP and RDP. Both are accessible. Where I'm wrong? I don't why connection timed-out even all ports are opened to anywhere in both EC2 and OpenZFS security group.