Problem

Mounting the NFS v4 to the Hipchat Data Center node fails with the following error in the kern.log.

2017-10-16T07:21:33.679317+00:00 hipchat kernel: [ 331.367484] IN= OUT=eth0 SRC=192.168.10.199 DST=192.168.10.198 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=11180 DF PROTO=TCP SPT=792 DPT=2049 WINDOW=29200 RES=0x00 SYN URGP=0 
2017-10-16T07:21:33.679317+00:00 hipchat kernel: [ 331.372815] RPC: AUTH_GSS upcall failed. Please check user daemon is running.

Diagnosis

Environment

• Hipchat Data Center 3.0.1

Diagnostic Steps

• Check through the /etc/exports file and the structure should look like this for example

  /exports/data *(rw,no_subtree_check,no_root_squash)

Cause

It is a known issue when user mount the NFS volume using NFS4 when the /etc/exports should include the parent directory of your NFS folder.

This issue was discussed in the Since Upgrading NFS and Ubuntu to 14.04, All NFS Mounts Are Failing article.

Workaround

There are 2 workarounds that you can apply, either on the node(s) hosting Hipchat Data Center or the instance hosting the NFS:

Workaround #1 (Data Center node)

1. Obtain the root access to the node

   sudo dont-blame-hipchat

2. Edit the /etc/modprobe.d/blacklist.conf file using the editor of your choice. For example:

   nano /etc/modprobe.d/blacklist.conf

   
   

3. Include the following line in the file:

   blacklist rpcsec_gss_krb5

   
   

4. Once done, reboot the server and mount the NFS again

Workaround #2 (NFS server)