OCI: SAR report “/var/log/sa/” not generating after upgrading instance to Oracle Linux 8

APPLIES TO:

Oracle Cloud Infrastructure

Linux x86-64

SYMPTOMS

Why is SAR report “/var/log/sa/” not generating after upgrading to OL8?

CAUSE

Required sysstat services are not running.

$sudo systemctl list-unit-files |grep sysstat 
sysstat-collect.service                        static          
sysstat-summary.service                        static          
sysstat.service                                enabled  

sysstat-collect.timer                          disabled        

sysstat-summary.timer                          disabled 

In Oracle Linux 8 systat service is managed by systemd whereas on Oracle Linux 7 it is crond.

SOLUTION

Start the following service and enable it to start at boot time.

$sudo systemctl start sysstat-collect.timer  
$sudo systemctl start sysstat-summary.timer 

$sudo systemctl enable sysstat-collect.timer

$sudo systemctl enable sysstat-summary.timer 

Following is the example of working sysstat unit files