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Scope of AD Design Provide Compliance, Governance and Oversee Network Authentication Secure Servers, Users and Computers Provide DNS Resolution Create central repository of all IT objects and assets What are the elements of Active Directory Design? Forest Plan Domain Plan Organizational Unit Plan Site and Services Plan 1. Key Consideration for Forest Plan […] Like basic disks, which are the most commonly used storage type found on computers running Microsoft Windows, dynamic disks can use the master boot record (MBR) or GUID partition table (GPT) partitioning scheme. All volumes on dynamic disks are known as dynamic volumes. Dynamic disks were first introduced with Windows 2000 and provide features that […] IT organizations need tools to charge back business units that they support while providing the business units with the right amount of resources to match their needs. For hosting providers, it is equally important to issue chargebacks based on the amount of usage by each customer. To implement advanced billing strategies that measure both the […] Singnals in Linux Terminate or send a signal with kill or killall # kill -s TERM 4712 ——– same as kill -15 4712 # killall -1 httpd ——– Kill HUP processes by exact name # pkill -9 http ——– Kill TERM processes by (part of) name # pkill -TERM -u www ——- Kill TERM processes […] You have to keep in mind when you installed Linux that the installation process prompted you for a list of partitions & the sizes of each in which your filesystems would be placed. 1. When apportioning disk space for the partitions, the first sector, or knowledge unit, for each partition is always reserved for programmable […] This is useful to find out which file is blocking a partition which has to be unmounted and gives a typical error of: # umount /home/ umount: unmount of /home failed: Device busy umount impossible because a file is locking home Find opened files on a mount point with fuser or lsof: # fuser […] iostat / vmstat / mpstat are some tools to monitor server performance. * iostat reports CPU, disk I/O, and NFS statistics. * vmstat reports virtual memory statistics. * mpstat reports processors statictics. iostat Iostat without any argument displays information about the CPU usage, and I/O statistics about all the partitions […] Starting oracle listener $ lsnrctl start Start the database $ dbstart Starting oracle Enterprise manager $ emctl start dbconsole Shutting down the database $ dbshut Stopping the listener $ lsnrctl stop Stopping oracle Enterprise manager $ emctl stop dbconsole Starts sqlplus without logging in to a database # su […] A schema is a collection of database objects. A schema is owned by a database user and has the same name as that user. Schema objects are logical structures created by users to contain, or reference, their data. Schema objects include structures like tables, views, and indexes. $ sqlplus /nolog SQL> connect / as sysdba […] mount -t iso9660 -o loop file.iso /mnt # Mount a CD image # mount -t ext3 -o loop file.img /mnt # Mount an image with ext3 fs # mount -o loop file.iso /mnt # extract an iso image to mnt Remount a device without unmounting it. # mount -o remount,ro / Copy the raw […] |
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