How to fix CSF’s error Another app is currently holding the xtables lock

The error should be looking as below:

You have an unresolved error when starting csf:
Error: Error processing command for line [339] (6 times): [Another app is currently holding the xtables lock. Perhaps you want to use the -w option?], at line 339 in /usr/sbin/csf

You need to restart csf successfully to remove this warning, or delete /etc/csf/csf.errorRead the rest

Mysqldump error: The user specified as a definer does not exist

Error:

mysqldump myuser_db > myuser_db.sql

mysqldump: Got error: 1449: “The user specified as a definer (‘user_db’@’localhost’) does not exist” when using LOCK TABLES

To pass this error try to use –single-transaction

mysqldump --single-transaction myuser_db > myuser_db.sql

Should be good now

Source: https://stackoverflow.com/questions/26583103/mysqldump-got-error-1449/26583311Read the rest

How to completely get rid of abrt service

Disable the abrtd service

service abrtd status
systemctl stop abrtd
systemctl disable abrtd
systemctl daemon-reload

At this step you can get when accessing SSH

‘abrt-cli status’ timed out

Check yum:

yum list abrt*

And remove:

yum remove abrt*

Run cagefs update if any:

cagefsctl --force-update
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How to install/reinstall mailman on cPanel server

Check Tweak Settings, should be ‘0’

cat /var/cpanel/cpanel.config |grep skipmailman

skipmailman=0

Deprecated scripts

/scripts/reinstallmailman
/usr/local/cpanel/bin/mailman-install --force

To install mailman run the following:

/usr/local/cpanel/scripts/update_local_rpm_versions --edit target_settings.mailman installed
/usr/local/cpanel/scripts/check_cpanel_rpms --fix --targets=mailman

Run upcp:

/scripts/upcp --force
systemctl start mailman.service

Job for mailman.service failed because a configured resource limit was exceeded.

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