ERROR at CsBlockCif.cc(1220): accept() Failure: Too many open files.

Products

• CA Spectrum

Issue/Introduction

VNM.OUT shows the following error:

ERROR at CsBlockCif.cc(1220): accept() Failure: Too many open files.

Environment

Release: for 10.4.0 and LOWER - this is unsupported on 10.4.1 and up
Component: SPCCSS

Resolution

If you are getting error “Too many open files (24)” then your application/command/script is hitting max open file limit allowed by linux. You need to increase open file limit as below:

Increase limit

Per-User Limit

Open file: /etc/security/limits.conf

Paste following towards end:

*         hard    nofile      500000
*         soft    nofile      500000
root      hard    nofile      500000
root      soft    nofile      500000

Additional Information

From 10.4.2.1 version Spectrum uses systemd no more init.d 

 

"DX NetOps Spectrum Process Initialization Changed from init to systemctl
From the current release, DX NetOps Spectrum processes are registered with systemctl instead of /etc/init.d. The use of systemctl helps to reduce the system and application boot time by parallelly booting the processes.

..

The DX NetOps Spectrum installation adds a process daemon (processd) file to the following startup areas on Linux:
/etc/rc.d/init.d/processd (10.4.2) or /etc/systemd/system/processd.service (10.4.2.1)

..."

and it looks like  systemd handles such limits (like nofile, nproc ..) differently than initd.

This means, that limits configured in /etc/security/limits.conf are completely ignored for systemd services