Create a script clear_exim
# vi clear_exim
Insert:
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Apache Error: “semget: No space left on device”
If apache does not start , then please check the error logs with cpanel. The error
“semget: No space left on device” shows that that your server has run out of semaphores.
To check how many semaphores are being used, login to your server as root and run the following:
ipcs –s
cPanel Recover InnoDB table Corruption
InnoDB force Recovery, There are many reasons available to get database corrupted. Make sure that you maintain a good backup schedule by running a cpanel backup in case of serious corruption or data loss issue or refer with Mysql knowledgebase.
InnoDB corruption can cause all of the databases running on that server to be inaccessible. Unfortunately some times you need to recover MySQL data from ibdata1. It’s many reasons why your getting corrupted Innodb files that cannot automatically be restored of the mysqld daemon. We can recover innodb table corruption in your cpanel server.
cPanel MySQL Performance Tuning
MySQL Performance Tuning Shell Script, This script takes information from “SHOW STATUS LIKE…” and “SHOW VARIABLES LIKE…” then attempts to produce sane recommendations for tuning server variables. It is compatible with all versions of MySQL 3.23 and above.
In your huge traffic cPanel server you can use the following MySQL performance tuning script to optimize the mysql performance.
Cpanel Database Automatic backup Shell script
We can backup our databases using different methods, Here is the shell script used for automatic backup MySQL databases using mysqldump in your cpanel server. The following instruction can be used to backup any database. The only requirement is that you are using a Linux server to host your files and mysql user privileges. Use this Database Automatic backup Shell script via cron job.
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Managing iptables through CSF
1. Search for ‘firewall, and click ConfigServer Secuirty&Firewall
2. There are three options that are very important: Quick Allow, Quick Deny, and Quick Ignore. You simply input an IP to the appropriate field.
Suspending and allowing accounts or users in WHM
To suspend or allow an account
1. Log on to your WHM as root.
2. Go to “Account Functions” section.
3. Click on “Suspend/Unsuspend an Account”.
4. Select the account from the list.
Managing parked domains in WHM and cPanel
Manage Parked Domains in WHM
1. In the upper left search box, search for Park a Domain
2. In the new page, you will be able to enter or select the domain on which you wish to park
Adding an IP address to the cPHulk white list
1. Start by searching for cPHulk in the upper left search box
2. Enter cphulk in search box (you will see cPHulk Brute Force Protection)
3. This will bring you to the cPHulk page. Click on the White/Black List Management tab
Increasing PHP memory limit
1. Start by searching PHP Configuration Editor, and click
2. Locate the memory_limit entry.
3. Enter the desired amount of memory. You can also enter “-1” for unlimited memory located on the right
4. Scroll to the bottem and click Save
