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Application Performance Monitoring Server install Hangs

Troubleshooting


Problem

Application Performance Monitoring Server install Hangs for few hours and nothing happens

Symptom

1. If you are doing a SSH to the server and running the install.sh script then you need to leave that console session running (in the foreground) until the install completes. so you to need to keep "up" the console session where  you are running the install.sh and not trying to run it in the background.

2. The APM table installation script in DB2 will modify the TMOUT variable but in some environment it may be set to be "read-only" so the install will hangs, so please uncomment the OS variable TMOUT before installing APM.

The TMOUT environment variable controls how long an inactive terminal window will remain present. If it were set to, say, 600, then inactive windows would close after 600 seconds (10 minutes) -- the window would close itself. A value of zero disables auto-close, which most people prefer. Commenting out the line in /etc/sysconfig/msec has no effect on the system, since the environment variable is already set to zero and made read-only. 

more detail about TMOUT variable

https://www.itworld.com/article/2820677/hardware/unix-tip--killing-idle-logins.html

Cause

TMOUT environment variable is set as readonly variable and install script trying to modify the variable

Environment

Linux

Diagnosing The Problem

Check the APM install log

Resolving The Problem

unset the TMOUT variable and start the install again
How to find out if TMOUT environment variable is set as readonly
There is a shell command named "readonly" which shows you the environment variables that are set as read-only.
example from my system:
[root@apmrhel72 ~]# readonly TMOUT=600
[root@apmrhel72 ~]# readonly
declare -r BASHOPTS="checkwinsize:cmdhist:expand_aliases:extglob:extquote:force_fignore:histappend:interactive_comments:login_shell:progcomp:promptvars:sourcepath"
declare -ir BASHPID
declare -r BASH_COMPLETION_COMPAT_DIR="/etc/bash_completion.d"
declare -ar BASH_VERSINFO='([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")'
declare -ir EUID="0"
declare -ir PPID="26321"
declare -r SHELLOPTS="braceexpand:emacs:hashall:histexpand:history:interactive-comments:monitor"
declare -r TMOUT="600"
declare -ir UID="0"
You can use the similar script to remove the readonly variable
readonly TMOUT=600
$ unset TMOUT
-bash: unset: TMOUT: cannot unset: readonly variable
$ cat << EOF| sudo gdb
attach $$
call unbind_variable("TMOUT")
detach
EOF
$ echo $TMOUT

Document Location

Worldwide

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSVJUL","label":"IBM Application Performance Management"},"Component":"","Platform":[{"code":"PF016","label":"Linux"}],"Version":"All Versions","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 January 2020

UID

ibm11284454

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