Issues : – Boot partition got crashed/corrupted or it’s contents deleted mistakenly. – System is not booting up. – Recover the data from backups without reinstalling the whole system. Solution: 1. Boot from Cent-OS...
The GRUB2 is the default boot loader for Enterprise Linux 7. CentOS7 is using grub2 and the generated /boot/grub2/grub.cfg rather than the old grub.conf format. If the GRUB2 boot loader is Deleted / Corrupted...
Issue: Unable to pass a huge value to Apache Tomcat via URL string Solution: The content-length is a HTTP header field that specifies the length of the request body in octets (8-bit bytes). It...
Issue: We are facing following memory limit error while accessing our website “example.com” Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 12288 bytes) in /home/example/public_html/client/vendor/phpmailer/phpmailer/class.phpmailer.php on line 720 We have...
The department manager or boss of the business may want to be included on all emails that employees/staff receive on their email accounts as a copy. Most preferably a BCC so that it is...
Issue: We have a domain example.com was already hosted on the server and was suspended state. After terminated the account from server and we have recreate the domain on the server under my reseller...
Issue : I’ve tried connecting a Google app mail account to Outlook which kept on prompting for username and password even though it was accurate. To make sure, I’ve tried connecting it to my...
Issue: When trying to install an application through yum [Yellowdog Updater, Modified] You may get an error message saying from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error message is shown below. root@testserver [/home]#...
Issue: While working with MongoDB we got following error Resolve the problem of “The Mongo class is deprecated, please use the MongoClient class in /var/www/html//moadmin/moadmin.php” Solution: Step 1 : Open the file named moadmin.php...
RockMongo is an Open Source tool developed for MongoDB administration tool which is written in PHP 5. It is one of the best tool for MongoDB administration available currently. It provides a very good...
MongoDB is a full flexible index support and rich queries database. Its is a NoSQL database. MongoDB has released new stable version 3.2 with lots of major enhancements. This tutorial will help you to...
Administrative tools / Centos / grub2 / OS
How to Reinstall the GRUB2 Boot Loader on CentOS 7
21 Sep, 2016
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