LinuxHostingSupport

If you receive the following error message in the /var/log/messages file while restarting the pure-ftpd service, the problem is in the ftp configuration file at /etc/pure-ftpd.conf

pure-ftpd: (?@?) [ERROR] Configuration error: Illegal load limit: 0

Edit the pure-ftp configuration file and search for

MaxLoad = 0

change it to

MaxLoad = 4    (value should be above 0)

Save the file and restart the service: /etc/init.d/pure-ftpd restart

Howto install CSF on your server:

1) cd /usr/local/src/
2) download csf: wget http://www.configserver.com/free/csf.tgz
3) tar -xzf csf.tgz
4) goto the csf directory : cd csf
5) ./install.sh

Once it is installed, you can either edit the configuration file from WHM >> Plugins >> “Config Server Security and Firewall” option.

If you don’t have WHM/cPanel on your server, the configuration and all the CSF related files are stored under /etc/csf directory. You need to edit the csf configuration file /etc/csf/csf.conf and make the changes as per your wish.

Once you make the required changes to your CSF configuration file and are sure, you are not going to block yourself out, change the following from

TESTING = “1”
to
TESTING = “0”

and restart the csf firewall using service csf restart command.

You may have notice packet drops when CSF firewall is enabled and you are downloading something. The only reason is the option

PACKET_FILTER = “1”

By default the “PACKET_FILTER” is ON which drops packets that looks illegal or out of sequence. If it’s generating false alarms and causing the valid packet to drop, you should better turn OFF the option in /etc/csf/csf.conf file

PACKET_FILTER = “0”

Save the file and restart CSF firewall.

“Got a packet bigger than ‘max_allowed_packet’ bytes”

The message is displayed when you try to restore a database and the packet size if more than the default one OR the one defined in the my.cnf file.You can check the existing bytes with the following command

root@server [~]# mysqladmin variables | grep max_allowed_packet
| max_allowed_packet              | 1048576 |

To overcome the issue, add the following parameter in the my.cnf file

max_allowed_packet = 2097152

The value should be more than the default one. Save the file and restart the mysql service.

The  path to various logs files on a cPanel server for different services is listed below:

Apache Web Server Logs:

/usr/local/apache/logs/access_log
/usr/local/apache/logs/error_log

Exim (Email) Logs:

/var/log/exim_mainlog
/var/log/exim_paniclog
/var/log/exim_rejectlog

Ftp Logs:

/var/log/messages

Mysql Logs:

/var/lib/mysql/server.hostname.err

Cronjob Logs:

/var/log/cron

Server Logs:

/var/log/messages

SSH Logs:

/var/log/secure

cPanel Installation Logs:

/var/log/cpanel-install-thread0.log

ChkServd (cPanel Monitoring Daemon) Logs:

/var/log/chkservd.log

Named (Bind) Logs:

/var/log/messages

Last successful login attempts to the server:

/var/log/wtmp (but to view the details, execute the command “last”)

Last unsuccessful login attempts to the server:

/var/log/utmp (To view the logs, execute “lastb” command)

Domlogs of an Account:

/usr/local/apache/domlogs/domainname.tld

Mod Security Logs:

/usr/local/apache/logs/modsec_audit.log
/usr/local/apache/logs/modsec_debug_log

Apache SUEXEC Logs:

/usr/local/apache/logs/suexec_log

cPanel Access and Error Logs:

/usr/local/cpanel/logs/access_log
/usr/local/cpanel/logs/error_log

Stats Execution Logs:

/usr/local/cpanel/logs/stats_log

cPanel License Logs:

/usr/local/cpanel/logs/license_log

cPanel Backup Logs:

/usr/local/cpanel/logs/cpbackup/*.log

Tomcat Logs:

/usr/local/jakarta/tomcat/logs/catalina.err
/usr/local/jakarta/tomcat/logs/catalina.out