nslcd timer expired errors and server pauses - RHEL6

Solution Verified - Updated -

Issue

RHEL 6 x86_64 running on physical hardware with IBM Tivoli Storage Manager Server (TSM) installed and running. Symptoms are:

  • Noticeable pauses in server
  • Long running operations and authentication timeouts to TSM
  • /var/log/messages errors get logged:
Nov 20 08:39:29 hostname1 nslcd[5256]: [3d224f] error reading from client: Timer expired
Nov 20 08:39:49 hostname1 nslcd[5256]: [78fa39] error reading from client: Timer expired
Nov 20 08:40:09 hostname1 nslcd[5256]: [2dc63b] error reading from client: Timer expired
Nov 20 08:40:29 hostname1 nslcd[5256]: [5775d6] error reading from client: Timer expired
Nov 20 08:40:49 hostname1 nslcd[5256]: [efb8ba] error reading from client: Timer expired
Nov 20 08:41:09 hostname1 nslcd[5256]: [a6ad6f] error reading from client: Timer expired
Nov 20 08:41:29 hostname1 nslcd[5256]: [b78064] error reading from client: Timer expired
Nov 20 08:41:49 hostname1 nslcd[5256]: [cad3be] error reading from client: Timer expired
  • This impacts backup and server operations, slowing them to a crawl.
  • This issue can occur without TSM if nslcd passes select() the fd_set more than 1024.

Environment

  • Red Hat Enterprise Linux (RHEL) 6
  • With or Without TSM.

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In
Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.