Axel Cervera
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Articles
Recent activity by Axel Cervera-
Receiving permission error when using a CIFS mount for backups
Symptoms A backup or restore job may fail with similar permission errors: /bin/cp: failed to preserve ownership for `': Permission denied /bin/cp: failed to preserve ownership for `': Permission de...
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How are .htaccess directives applied?
Question How does Apache apply .htaccess directives, and in what order are they read? Answer Apache reads .htaccess files starting from the top-level directory of the document root and then any s...
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cPanel user-backups seem to disappear after completing
Symptoms Creating a user backup via the cPanel interface "cPanel / Backup" or the API results in the backup disappearing after completion. Description When a backup is created, its contents are ...
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How to repair an RPM database
Introduction Incomplete or inconsistent data may be written to the rpmdb when a crash event occurs for an RPM or YUM transaction that was updating the RPM database, causing RPM database corruption....
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How to switch to a Hybrid kernel in CloudLinux
Introduction CloudLinux offers Hybrid kernels which being features from kernels not normally available for the operating system's release. For example, a CloudLinux 6 hybrid kernel will have featur...
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How to modify Ulimit values
Introduction Ulimit values control certain characteristics about what resources processes have access to. These values can be set globally or per user. The following information is provided as a co...
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What control panels does the Transfer Tool support?
Question From what control panel sources can I migrate content to my cPanel & WHM server? Answer The cPanel & WHM's Transfer Tool is able to migrate data from the following source panels: cPanel &...
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Automatically logged out of WHMCS
Symptoms After logging into the WHMCS, making any changes or modifications may log you out. Description By default, WHMCS has a security setting that should help prevent cookie/session hijacking...
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How to perform IP address lookups?
Introduction As the server administrator, you may often need to perform lookups to various IP addresses in your server logs to determine whether the traffic is normal or not. Procedure To determi...
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How to test the integrity of TAR and ZIP files
Introduction These file types are often used for backups or general safe-keeping of files or directories. However, if you ever need to restore the content from these files, you should check for the...