How to disable LFD excessive resource usage alert:

As you know that LFD is the login failed Daemon, it will fetch the login failed logs from the server logs and disable the IP address from which the login failed is registered on the server. This can be done by using the CSF firewall. You can get alerts to your email when you set this on your server. In LFD we can set resource usage limit.

See an example LFD alert for resource usage limit exceed.

Time: Tue Nov 29 12:15:10 2014 +0520
Account: iserver
Resource: Virtual Memory Size
Exceeded: 205 > 200 (MB)
Executable: /usr/bin/php
Command Line: /usr/bin/php /home/iserver/public_html/index.php
PID: 11254 (Parent PID:11254)
Killed: No

This is an email alert for resource usage limit exceed by the user named iserver. So for disabling getting alerts related to LFD resource usage, please follow the methods mentioned below,

Method I
You can disable this particular feature from CSF configuration.
Step 1: Login to your server via SSH as root user.
Step 2: Open the CSF configuration file (/etc/csf/csf.conf) and search the directive ‘PT_USERMEM’. By considering the above example, the PT_USERMEM is 200. You can set the value of PT_USERMEM to ‘0’ to disable this feature from CSF.

For Example:

[[email protected] #] vi /etc/csf/csf.conf
# This User Process Tracking option sends an alert if any linux user process
# exceeds the memory usage set (MB). To ignore specific processes or users use
# csf.pignore
# Set to 0 to disable this feature
PT_USERMEM = "200"

Method II

You can increase the PT_USERMEM limit. By setting the value of PT_USERMEM to a higher value than 200 may help you.

Method III
There is a file in csf directory ‘csf.pignore’. You can add the process or the user which you want to ignore this type of alert in to this file.

[[email protected] #] vim /etc/csf/csf.pignore

Restart the services CSF and LFD

csf -r

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