I'm building a small Oscar 2.1 cluster on top of RedHat 7.3. After Step 6, Setup Networking, the computing nodes were successfully booted up via PXE boot. I then tried to reboot it from hard drive and the mounting NFS filesystems failed.
Starting the portmapper OK, starting the NFS service OK, the NFS mounting the /home from the sever Failed. The error messages:mount: RPC: portmapper failure, RPC: unable to receive, Mounting NFS filesystems: Failed. Once the system was up, logged on as root, "df -k" showed the local file systems. I then typed "mount -a", and "df -k" showed the server's /home mounted on /home. After the RedHat 7.3 installation on the server, I edited the /etc/hosts.allow file according to the "How to Install an OSCAR Cluster", D.5, TCP Wrappers (P38). The hosts.allow file looks like this: #allow NFS service to cluster.lnx portmap: .cluster.lnx rpc.mountd: .cluster.lnx #allow ssh logins from anywhere sshd: ALL cluster.lnx is the domain name I had for the private network of the computing nodes. Thank you in advance for any help you can provide.
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