NFS Mounts Hang Because rpcbind Service Is Disabled

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

NFS shares fail to mount and dependent applications stall.

Environment & Reproduction

NFS server hardened baseline unintentionally disables rpcbind.

Root Cause Analysis

Required RPC service is not active for negotiated NFS operations.

Quick Triage

Use systemctl status rpcbind nfs-server and rpcinfo -p on server.

Step-by-Step Diagnosis

Validate export configuration, service dependencies, and firewall rules.

Solution – Primary Fix

Enable/start rpcbind and nfs-server, then reopen required firewalld services.

Solution – Alternative Approaches

Standardize on NFSv4-only setup reducing ancillary RPC exposure.

Verification & Acceptance Criteria

Mount succeeds and I/O tests pass from client hosts.

Rollback Plan

Disable services and restore previous NFS baseline if change fails.

Prevention & Hardening

Implement configuration drift checks for NFS service dependencies.

Related Errors & Cross-Refs

mount.nfs: Connection timed out, RPC: Program not registered.

Related tutorial: View the step-by-step tutorial for oracle-linux-10.

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Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Oracle Linux NFS server/client administration guide.