IBM AIX 7.2 – Common Problem 023 – Diagnosis and Fix

📖 ~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

Privileged commands report “insufficient privileges” although user is in suauthdb.

Environment & Reproduction

IBM AIX 7.2 LPAR exhibiting security / RBAC privilege error issues under standard PowerVM workloads.

lsuser -a roles user1
lsrole ALL

Root Cause Analysis

Role lacks the authorisation or privileged command not in /etc/security/privcmds.

Quick Triage

Confirm scope with errpt, recent changes, and subsystem state via lssrc.

errpt | grep AUDIT
cat /etc/security/privcmds

Step-by-Step Diagnosis

Trace failing command with truss to identify missing privilege.

truss -f -o /tmp/t.out cmd
setkst

Solution – Primary Fix

Grant required role/authorisation and refresh KST.

chuser roles=isso,sa user1
setkst

Solution – Alternative Approaches

Reauthorise the command via setsecattr and add to suauthdb.

Verification & Acceptance Criteria

Confirm subsystem returns to RUNNING state and errpt shows no new entries.

lsuser -a roles user1
lskst -t cmd

Rollback Plan

Restore prior configuration from mksysb or alt_disk_install clone if the fix regresses.

chuser roles= user1  # remove role on rollback

Prevention & Hardening

Encode the fix in NIM customisation scripts and monitor via topas/nmon.

smit rbac  # design role separation policies

Related Errors & Cross-Refs

AUDIT_FAIL events; trustchk inconsistencies

Related tutorial: View the step-by-step tutorial for aix-7.2.

View all aix-7.2 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

AIX Role Based Access Control