Readme file for IBM^® Spectrum Symphony 7.3.1 Interim Fix 602261

Readme file for: IBM Spectrum Symphony
Product/Component release: 7.3.1
Fix ID: sym-7.3.1-build602261

Publication date: November 15, 2024

 

Interim fix to provide a connection configuration attribute, called  EGO_PLATCOMMDRV_BACKLOG_SIZE_ON_LINUX in the ego.conf configuration file. This parameter allows you to configure the number of connection requests to be held in the backlog for VEMKD for IBM Spectrum Symphony 7.3.1.

 

Contents

1.     List of fixes

2.     Download location 

3.     Product and components affected

4.     Installation and configuration

5.   Uninstallation

6.     List of files

7.     Product notifications 

8.     Copyright and trademark information

1.   List of fixes

APAR: P105249

2.   Download location

Download interim fix 602261 from the following location: http://www.ibm.com/eserver/support/fixes/.

3.   Products or components affected

Component name, Platform, Fix ID:

EGO, Linux x86_64, sym-7.3.1-build602261

4.   Installation and configuration

Follow the instructions in this section to download and install this interim fix on hosts in your cluster.

System requirements

Linux x86_64

Installation

a.      Log on to the primary host as the cluster administrator, disable all applications, stop all services,  and shut down your cluster:

> egosh user logon -u Admin

> soamcontrol app disable all -f

> egosh service stop all

> egosh ego shutdown

b.      Download the egocore-3.9.0.0_x86_64_build602261.tar.gz to each of your management hosts, for example, to a /symfixes directory.

c.      Run the egoinstallfixes command to install the egocore-3.9.0.0_x86_64_build602261.tar.gz file:

> egoinstallfixes /symfixes/egocore-3.9.0.0_x86_64_build602261.tar.gz

Note: Running the egoinstallfixes command automatically backs up the current binary files to a fix backup directory for recovery purposes. Do not delete this backup directory; you will need it if you want to recover the original files. For more information on using this command, see the egoinstallfixes command reference.

d.      Restart the primary host:

> egosh ego start

e.      Run the pversions command to verify the installation:

> pversions -b 602261

 

     Configuration and usage

This enhancement provides a new attribute in the ego.conf file, called EGO_PLATCOMMDRV_BACKLOG_SIZE_ON_LINUX, which allows you to configure the number of connections that can remain in the backlog for the VEMKD service. 

Required or optional: Optional

Valid values: 1 to 36864

Default value: 1024

Configuration

On one management host, edit the $EGO_CONFDIR/ego.conf file to add the  EGO_PLATCOMMDRV_BACKLOG_SIZE_ON_LINUX  parameter configuration:

EGO_PLATCOMMDRV_BACKLOG_SIZE_ON_LINUX=value

On each management host, ensure that the /proc/sys/net/core/somaxconn file is configured correctly. The default maximum number of backlogs is set to 1024, unless you change this value. Use the following system commands to change this setting to 2048:
> sudo sysctl -w net.ipv4.tcp_max_syn_backlog=2048

Modify the file /etc/sysctl.conf and add the following line:

net.ipv4.tcp_max_syn_backlog = 2048

> sudo sudo sysctl -p

5.   Uninstallation

If required, follow the instructions in this section to uninstall this interim fix from hosts in your cluster.

a.      Log on to the primary host as the cluster administrator, disable all applications, stop all services,  and shut down your cluster:

> egosh user logon -u Admin

> soamcontrol app disable all -f

> egosh service stop all

> egosh ego shutdown

a.      From each of your management hosts (or just one host if you are using a shared file system), roll back this fix:

> egoinstallfixes -r 602261

b.      Restart the primary host

> egosh ego start

6.   List of files

3.9/linux-x86_64/etc/vemkd 18870cad8ceba763917e012b9f145be8

7.   Product notifications

To receive information about product solution and patch updates automatically, subscribe to product notifications on the My Notifications page http://www.ibm.com/support/mynotifications/ on the IBM Support website (http://support.ibm.com). You can edit your subscription settings to choose the types of information you want to get notification about, for example, security bulletins, fixes, troubleshooting, and product enhancements or documentation changes.

8.   Copyright and trademark information

© Copyright IBM Corporation 2024

U.S. Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.

IBM®, the IBM logo, and ibm.com® are trademarks of International Business Machines Corp., registered in many jurisdictions worldwide. Other product and service names might be trademarks of IBM or other companies. A current list of IBM trademarks is available on the Web at "Copyright and trademark information" at www.ibm.com/legal/copytrade.shtml.