ServerBuddies Support Blog

Common NFS Syntax Errors

The NFS server determines which file systems to export and which hosts to export these direct-
ories to via the /etc/exports file.

Be careful not to add extraneous spaces when editing this file.

For instance, the following line in the /etc/exports file shares the directory /tmp/nfs/ to the host serverbuddies.example.com with read/write permissions.

This line in the /etc/exports file, on the other hand, shares the same directory to the host serverbuddies.example.com with read-only permissions and shares it to the world with read/write permis-sions due to a single space character after the hostname.

It is good practice to check any configured NFS shares by using the showmount command to verify what is being shared:

Yum errors

While running ‘Yum update’, if we get the following error,

We can fix the error by installing GPG public key.

There are few kind of RPMs e.g atrpms, dag..

You can see the RPM types using the command,

Below are the ways to install RPM GPG keys for atrpms and dag,

Checking disks for errors using the badblocks command

Read-only test using the badblocks command.

This is a non-destructive read-only test which can be run on disk even if it contains a mounted filesystem. It simply verifies that each block can be read; it does not test for write errors.