Cisco Headend System Release 2.7 Guía De Instalación

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Chapter 2    SR 2.8.2/3.8.2/4.3.2 Upgrade Procedures 
 
 
 
62 
4038415 Rev A 
Remove Scripts That Bounce the Pass-Through 
Process 
In order to correct some issues associated with the Pass-Through process on the 
DNCS, some sites have been regularly bouncing this process through scripts that 
reside in the crontab file. SR 2.8.2/3.8.2/4.3.2 contains software that corrects issues 
associated with the Pass-Through process. Therefore, after the upgrade, you should 
remove any entries in the crontab file that reference scripts that bounce the Pass-
Through process. The instructions in this section guide you through the process of 
removing these references. 
Notes: 
 
Bouncing a process refers to stopping and then restarting that process. 
 
The scripts that Cisco wrote to bounce the Pass-Through process are called 
elop.sh and bouncePassThru
 
Removing Scripts That Bounce the Pass-Through Process 
1  If necessary, open an xterm window on the DNCS. 
2  Follow these instructions to check on the presence of scripts in the crontab file 
that bounce the Pass-Through process. 
a  Type the following command and press Enter. The system lists the line(s) 
within the crontab file that contain elop.ksh. 
crontab -l | grep -i elop.sh
 
b  Type the following command and press Enter. The system lists the line(s) 
within the crontab file that contain bouncePassThru. 
crontab -l | grep -i bouncePassThru
 
3  Did the output of step 2 contain any references to the elop.sh or the 
bouncePassThru scripts? 
 
If yes, go to step 4 to remove those references. 
 
If no, go to the next procedure in this chapter. 
Note:  You do not have to remove any references to the scripts from the 
crontab file. 
4  Type the following command and press Enter. The system redirects the contents 
of the crontab into dncs.crontab. 
crontab -l > /tmp/dncs.crontab
 
Note:  While you can edit the crontab directly, we recommend that you first 
redirect the contents of the crontab to dncs.crontab so you can recover the 
original crontab if necessary.