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Search results “Fstab centos options”
How to Auto-Mount a Volume by editing FSTAB (File Systems Table) in Linux
 
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Here I show you how to mount a volume automatically each time you login. You will need root permissions to do so, but it is fairly simple. First, locate where the drive is listed in your system by issuing: sudo fdisk -l (Be careful with the fdisk command, improper use can wipe entire partitions). Then you need to select a mount point. It can be any directory you want, but it needs to be empty. If it is not, you will not be able to get the previously placed files until you unmount the volume. Finally, editing the File System Table: sudo gedit /etc/fstab (Of course, you can use other editors, such as nano, vi, emacs, kate, etc). You then need to write in the changes, using the locating given by fdisk, the previously selected mount point, the file system type (ext4, ntfs, reiserfs, etc.), options (rw, user, exec, auto, etc.), and optionally Dump & FSCK bits. Upon reboot (or issuing a mnt command in the terminal) your drive will be mounted.
Views: 19628 Brad Brockmeier
Method 2: How to Auto Mount a Hard Drive in Linux
 
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In this video I show you the step by step process of using UUID "Universally Unique Identifier" to auto mount your internal or external hard drives in Linux. Terminal Commands: sudo blkid - lists all of your drives UUID's cat /proc/mounts - lists all of the mounts and mount options of your partitions Appreciate what I do? Grab me a coffee! http://goo.gl/wmHh4 Twitter: http://twitter.com/OhHeyItsLou Facebook: http://www.facebook.com/OhHeyItsLou Google+: google.com/+LouRizzo Blogger: http://ohheyitslou.blogspot.com IRC: Freenode #ohheyitslou Steam: IDIefiant
Views: 54279 OhHeyItsLou
How Increasing Linux Servers Performance by 30% - Networknuts
 
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Red Hat Training video showing the importance of relatime and barrier mount options in /etc/fstab. Understand how atime, mtime and ctime filesystem metadata writes slows down the Linux server. Understanding the concept of barrier mount option and when to disable it and how it increases Linux servers performance, safely. Connect to Alok Srivastava - http://www.facebook.com/alokaryan Visit our Linux Blog - http://www.networknuts.net/linux-blog
Views: 19291 networknutsdotnet
RHCE EX300 : Configure Kerberos Enabled NFS share in RHEL 7 and CentOS 7 (File Based Storage)
 
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In this rhce video tutorial, I will show you how to export file systems to client using NFS with Kerberos authenticated in RHEL 7 and CentOS 7 server. Kerberos enabled NFS exports The NFS server does not require authentication and only enforces access restriction based on the IP address or host name of the client by default. To remedy this, the NFS server provides options to secure access to files using a number of methods: none, sys, krb5, krb5i and krb5p. The NFS server can choose to offer a single method or multiple methods for each exported share. NFS clients must connect to the exported share using one of the methods mandated for that share, specified as a mount option sec=method. Visit our Website for other articles : http://networkheros.com/ Like us on Facebook : https://www.facebook.com/NetworkHeros/ Twitter: https://twitter.com/NetworkHeros Find my courses on Udemy : https://www.udemy.com/prepare-rhcsa-ex-200-exams-with-real-exam-practice-test/
Views: 782 Network Heros
How to Create New Partition in Linux (Centos/Redhat 6)
 
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How to Create New Partition in Linux (Centos/Redhat 6). Create new partition,format partition,mount partition on directory,edit fstab for permanent mount point,how to check all Disks available on system,lsblk command to check Disk output.filesystem creation with ext4
Views: 1328 The Linux Cafe
Resizing of standard xfs Partition in centos (NOT LVM)
 
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NOTE :- First do this on a test environment 1. I made the partition type as Standard and let Centos create them Automatically.. / partition was /dev/sda3 and with 8.71GB Format Option was xfs 2. After running "parted" it shows my existing disk size is 10.7GB .. Lets increase it up to 15Gb and give a restart 3. Run a "Parted" again and check new disk size. now it shows 16.1GB 4. Now we are going to increase size of / partition (/dev/sda3). Please note that to do this the partition you are going to increase should be the last partition on partition table . 5. First we have to delete the existing / partition entry from Partition table . Dont worry this will not delete your data . 6. Run fdisk /dev/sda 7. Type "p" to print partition table . Check if the /dev/sda3 drive have bootable flag (*) and make a note of the starting cylinder. When creating the new parttion with increased size the starting cylinder of the new partition should be the same as the old one 8. Type "d" and select partition that you are going to delete . ( the last one) 9. Now create a new one . Make the partition type as primary . Extend will destroy everything 8. Give the starting cylinder as same as the old one . If your are going to use the whole available space for this partion just type return for the end cylinder . it will allocate all available space to this new partition 9. Now type "w" and write these changes to the partition table . 10. Check blkid of the new partition and make changes to fstab if necessary 11. Now go ahead and restart your computer . 12. This partition will not be resized until we run resize2fs or xfs_growfs . resize2fs only supports ext file format partitions . This is a xfs partition so we have to use xfx_growfs tool . 13. First run xfs_info /dev/sda3 to check current details of the partition . 14. Then run xfs_growfs /dev/sda3 this will do on-line resize of our / partion . Thats it . Hope this tutorial helped you .
Views: 5010 Sinethra Seneviratne
How to Disable FIPS on linux | CentOS server
 
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Steps to Disable Remove dracut-fips # yum remove dracut-fips\* Backup existing initramfs # mv -v /boot/initramfs-$(uname -r).img{,.FIPS-bak} Create a new initramfs # dracut Update kernel argument # grubby --update-kernel=ALL --remove-args=fips=1 # reboot (Please make sure you should delete Entries for Viking Logical Volumes from /etc/fstab if you are enabling FIPS after viking cleanup ) To check that FIPS is disabled # sysctl crypto.fips_enabled should now return 0. link to Enable FIPS
Device Management using udev
 
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Device Management using udev. This video describes how to provide useful names to the disks so that the names are meaningful and you can understand what that disk is ?
Views: 13754 Rajnesh Kumar Siwal
antiX 13.2 - SpaceFM - SpaceFM tricks
 
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Stupid SpaceFM tricks 1. Use the spacefm desktop. a. you get a folder oriented desktop b. you also get the spacefm daemon running to do automounting of removable devices 2. Use spacefm in daemon mode a. use "spacefm -d &" from the cli to start the daemon. b. you can uncomment the "spacefm -d &" startup line in your window manager startup file to have spacefm -d autostart at login. 3. Use the spacefm daemon to start rox when you insert and mount an usb drive a. in spacefm, go to devices-settings-auto mount and uncheck the "open tab" option. b. in spacefm, go to devices-settings-auto run and select "On Mount". In the box that opens type "rox %m" c. close spacefm. if the daemon is running, inserting an usb key will now pop open rox filer on mount. 4. Spacefm by default doesn't display internal drives by default. enable that feature with Devices-Settings-Show-Internal Devices 5. Enable windows/samba/cifs network share support a. this is still a little clunky as there is no browsing for shares. b. edit udevil.conf (right click in the device area and select Root-edit "udevil.conf" c. Find the allowed_filesystems entry and add ", cifs" to the entry. d. you can now direct address a share with "smb://IP.add.ress/sharename" in the spacefm address bar. e. for browsing, check out my video on Keiths Mountshare plugin on my channel. d. also check out my videos on the connectshares utility for an alternate and fast method of connecting to shares. 6. Enable mounting of internal drives a. by default, spacefm has some issues with mounting certain types of internal drives. Linux permissions are enforced by default. this is a particular pain with ntfs drives. The options are to mount as root, put entries in fstab for mounting devices, or the following. b. edit udevil.conf and go to the entry for "allowed_internal_devices" and enter your device(s). c. wildcards work here, so /dev/sd* will likely allow mounting of any internal drive. /dev/sda* will allow mounting on any partition on sda. d. Got to Device-Settings-Mount Command and Unmount command and change to use udevil to do the mounting (erase the entry for autodetection, which will use udevil). d. this is a powerful option, particularly useful on liveUSB systems where you may need to mount filesystems on multiple machines. Got a favorite spacefm tweak? Let me know down in the comments. antix.mepis.org antix.freeforums.org Thanks for all the fish! d.o.
Views: 2861 runwiththedolphin
mounting NFS through systemd
 
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In this video I'll explain how to get rid of old fstab mounts and how to make mounts happen through systemd.
Views: 1591 sander van Vugt
How to Auto Mount a Hard Drive in Linux
 
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In this video I take you through the step by step process of auto mounting hard drives in LInux. Appreciate what I do? Grab me a coffee! http://goo.gl/wmHh4 Twitter: http://twitter.com/OhHeyItsLou Facebook: http://www.facebook.com/OhHeyItsLou Google+: google.com/+LouRizzo Blogger: http://ohheyitslou.blogspot.com IRC: Freenode #ohheyitslou Steam: IDIefiant
Views: 45702 OhHeyItsLou
How to boot in to Rescue Mode on Red Hat RHEL or CentOS
 
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How to boot in to Rescue Mode on Red Hat RHEL or CentOS
Lucky Backup - The easy way to Synchronise and Backup Data
 
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LuckyBackup is an application that backs-up and/or synchronises any files & folders with the power of rsync. Its main features are: backup, synchronization, exclude / only include options, allows custom rsync options, remote connections, restore, dry-run operations, and scheduling. A very fast backup program which transfers only the changes made and not all the data. Website: http://luckybackup.sourceforge.net/ Ubuntu users can download via Software Centre Packages for other Linux distros available via the website
Views: 11039 quidsup
Linux new disk add ( command : fdisk , mkfs.ext4 , blkid , mount )
 
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Adding the new Disk to linux ( Ubuntu ) Step. - Preparing the New Hard Disk and connected physically on linux system - Check the disk on linux os - Creating partition with fdisk command - Creating filesystem with Ext4 type - Editing the '/etc/fstab' file - Created Filesystem mounting
Views: 17898 jaekoo cho
Red Hat Linux Administration & Advance level of Troubleshooting
 
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Red Hat LINUX Basic Course Outline Linux basic concepts,Introduction & History of Unix/Linux Introduction to Unix History of UNIX What is LINUX History of Linux LINUX Distributions Unix File System User management : Understanding different types of groups and creation of groups Creation of users in different groups Understanding Passwd, Shadow Files Understanding passwd aging Creation of quotas for users, groups and file systems Understanding users security files password aging policy using chage commands TROUBLESHOOTING Permissions in Red Hat Linux Basic File Permissions User Based permissions groups Permission Types Change of permissions & ownership Special Permissions Setuid, Setguid, Sticky bit, ACL etc Two Labs to demonstrate the permissions from real IT industry environment. Disk Partitions & File Systems Creations Creating the partitions in a simple disk using fdisk Understanding the different options in fdisk utility Creating File Sytems using (ext3/ext4/xfs FS) Mounting/Umounting FS Entry in fstab Logical Volume Manager Administration LVM Architecture Overview LVM Components -Physical Volumes -Logical Volumes -Volume Groups LVM Logical Volumes -Linear Volumes -Striped Logical Volumes -Mirrored Logical Volumes Snapshot Volumes Logical Volume Creation Overview Growing a File System on a Logical Volume Logical Volume Backup LVM Administration with CLI Commands Using CLI Commands Physical Volume Administration Creating Physical Volumes Displaying Physical Volumes Preventing Allocation on a Physical Volume Resizing a Physical Volume Removing Physical Volumes Volume Group Administration Creating Volume Groups Adding Physical Volumes to a Volume Group Displaying Volume Groups Removing Physical Volumes from a Volume Group Changing the Parameters of a Volume Group Activating and Deactivating Volume Groups Removing Volume Groups RPM (Red Hat Package Manager) Install : It is used to install any RPM package. Remove : It is used to erase, remove or un-install any RPM package. Upgrade : It is used to update the existing RPM package. Verify : It is used to query about different RPM packages. Query : It is used for the verification of any RPM package. How to find HBA details & Storage Connectivity & Scan new disks/luns on Red Hat Linux Physical Server How's HBA/FC's are connected to the Linux Physical Server Lab on Live production Environment How storage disks are connected to the server What all the paths of a disk to access the SAN Storage via round robin request Lab on understanding the disks paths via different HBA/FC Card. How to scan new luns coming from storage on Red Hat Linux Overview of Multipathing Networking Concepts in RHEL 7 New Sets of commands introduced in RHEL 7 for managing the network interfaces. •Check the status of ethernet interfaces •Add and configure the new ethernet interface •Activate the network services •Commands to change the network properties of an existing interface •Delete the ethernet interface •Learning of various new commands related to managing network interfaces. Troubleshooting Linux Boot Problems in Red Hat Linux 5/6/7 (Basic System Recovery) - Advanced Level Simple & step by step understanding of Linux Boot Process ( 2 detailed Sessions) Overview of Red Hat Linux 7 and their features Lab on Basic System Recovery (Initramfs file missing/Corrupted) Lab on Basic System Recovery (Grub related issues like stage 1.5/2 grub is missing)-Part1 Lab on Basic System Recovery (Grub related issues like stage 1.5/2 grub is missing)-Part2 Lab on Basic System Recovery (Master Boot Record missing/corrupted) Lab on Basic System Recovery (Critical files are missing like mount binary, incorrect entry in fstab etc) Lab on Basic System Recovery (Critical files are missing like mount binary, incorrect entry in fstab etc) Red Hat Linux 7 - Sessions to understands different systemd targets & new commands. Red Hat Linux 7 - Sessions to understand different phases of booting modes like Rescue Mode/Emergency Mode & Troubleshooting Mode. Lab on Booting to Rescue Mode on RHEL7 Lab on Booting to Emergency Mode/Debug shell on RHEL7 Lab on Recovering the Root password in RHEL7 Resetting the Root Password Using an Installation Disk Resetting the Root Password Using rd.break Lab-10 on Repairing disk and file system errors on RHEL7
Views: 802 Shikhar Verma
How to Setup NFS Shares with your Synology
 
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How to Setup NFS Shares on Synology. Why? I purchased a Raspberry Pi and quickly installed the latest version of Raspbmc 12.0 (Frodo). The low power Pi has a 700 Mhz Cpu. By using NFS shares versus SMB aka Windows Shares you save up to 20% cpu. SMB apparently has more overhead compared to NFS. When streaming media from NFS shares 1080p content streams with no stuttering or hiccups. PuTTY download: http://www.chiark.greenend.org.uk/~sgtatham/putty/ You have a Mac try this http://www.michaelbourque.com/it/solutions-using-max-osx-terminal-as-an-alternative-to-putty/ Raspbmc website: http://www.raspbmc.com/ How To Create XBMC Library using MySQL with a Synology http://youtu.be/NwyABCuonWo * Update 8/9/2017 DSM 6 or higher requires super user access. Use the following steps to gain SUDO rights. admin password sudo -i password Now you will have SUDO rights. Thanks to Gerald for the heads up. ** Update 12/16/2013 Currently running DSM 4.3 3810 Update 2 with no problems *** Update 11/26/2014 Using DSM 5.0-4482 and later I had to use the "Squash" option and "Map all users to admin" in the NFS Rules. Around the 3:26 video mark. DSM 5-4482 and greater you will no longer have to edit the secure locks in exports. **** You will have to edit your exports, if you are using a Synology DSM version less than 4.3-3776.
Views: 146882 TimeToNas
How to boot in to Emergency Mode on Red Hat RHEL or CentOS
 
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How to boot in to Emergency Mode on Red Hat RHEL or CentOS with the grub menu
Grub file recovery in linux/centos 7
 
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how to centos 7 or linux 7 grub file recover or recover the operating system in rescue mode.
Views: 2745 Aftabuzzaman Khokon
Learn to mount and unmount a USB using command line in Linux
 
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Simple step by step tutorial for mounting and unmounting a USB or any drive using Linux command line. #rockforestlabs #linux
Views: 2420 Zac Smith
Implementing Linux Quotas - Part 1 of 2
 
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Implementing Linux Quotas - Part 1 of 2. Setting up and configuring Linux quotas on Debian systems, in this case Ubuntu 10.10.
Views: 20489 Carly Salali
Setting Up NFS Server And Client On CentOS 7
 
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NFS, stands for Network File System, is a server-client protocol used for sharing files between linux/unix to unix/linux systems. NFS enables you to mount a remote share locally. You can then directly access any of the files on that remote share. yum install nfs-utils -y mkdir /var/oj && chmod 777 /var/oj/ nano /etc/exports /var/oj/ 192.168.72.153/24(rw,sync,no_root_squash,no_all_squash) systemctl enable rpcbind nfs-server nfs-lock nfs-idmap && systemctl start rpcbind nfs-server nfs-lock nfs-idmap firewall-cmd --permanent --add-port=111/tcp && firewall-cmd --permanent --add-port=54302/tcp firewall-cmd --permanent --add-port=20048/tcp && firewall-cmd --permanent --add-port=2049/tcp firewall-cmd --permanent --add-port=46666/tcp && firewall-cmd --permanent --add-port=42955/tcp firewall-cmd --permanent --add-port=875/tcp firewall-cmd --reload Mount NFS shares On clients:- yum install nfs-utils systemctl enable rpcbind nfs-server nfs-lock nfs-idmap && systemctl start rpcbind nfs-server nfs-lock nfs-idmap firewall-cmd --permanent --add-port=111/tcp && firewall-cmd --permanent --add-port=54302/tcp firewall-cmd --permanent --add-port=20048/tcp && firewall-cmd --permanent --add-port=2049/tcp firewall-cmd --permanent --add-port=46666/tcp && firewall-cmd --permanent --add-port=42955/tcp firewall-cmd --permanent --add-port=875/tcp firewall-cmd --reload mkdir /var/nfs_share mount -t nfs 192.168.72.153:/var/oj/ /var/nfs_share/ mount nano /etc/fstab 192.168.72.153:/var/oj/ /var/nfs_share/ nfs rw,sync,hard,intr 0 0 mount df -hT ======================================================
How a partition in centos which should be mounted automatically while reboot
 
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This video tutorial for how to create a partition as a /data in centos that automatically mount while rebooting system http://affordable-servers.com
Views: 393 latasha sharma
How to setup NFS Server on RHEL7   CentOS7
 
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How to setup NFS Server on RHEL7 - CentOS7 NFS Server Hostname: guacamole.example.com (CentOS 7) NFS Server IP Address: 192.168.4.100 NFS Client Hostname: server1.example.com (CenOS 7) NFS Client IP Address: 192.168.4.210 ### Installing NFS Server ### yum install nfs-utils systemctl enable rpcbind ; systemctl enable nfs-server systemctl start rpcbind ; systemctl start nfs-server mkdir /nfsfileshare chmod 777 /nfsfileshare/ vi /etc/exports /nfsfileshare 192.168.4.210(rw,sync,no_root_squash) exportfs -r exportfs -v : Displays a list of shares files and export options on a server exportfs -a : Exports all directories listed in /etc/exports exportfs -u : Unexport one or more directories exportfs -r : Reexport all directories after modifying /etc/exports ### Configuring Firewall ### firewall-cmd --permanent --add-service=mountd firewall-cmd --permanent --add-service=rpc-bind firewall-cmd --permanent --add-service=nfs firewall-cmd --reload ### Configuring NFS client ### yum -y install nfs-utils systemctl enable rpcbind ; systemctl start rpcbind showmount -e 192.168.4.100
How to Create a File System in a Logical Volume in Linux
 
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This video shows how to create a file system in an LVM logical volume and how to mount it manually and automatically via /etc/fstab file. An RHCSA/RHCE/LFCS/LFCE/Linux+ essential. [Website: http://www.nixeducation.com] [LinkedIn: https://www.linkedin.com/in/asghar-ghori-0315632]
Views: 668 NixEducation
LINUX: ISCSI Target and Initiator Command Line configuration
 
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More videos like this on http://www.theurbanpenguin.com : Using SLES 11 we look at the benefits of using the command line to configure both the ISCSI Target and Initiator and mount the client drives using the UUID to ensure correct mounting from the fstab file
Views: 16109 theurbanpenguin
Journald Crash The Entire System When Journal Log is Corrupted But No With a Log Deletion CentOS 7
 
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Journald crash the entire system when journal log is corrupted but no with a log deletion CentOS 7 This video shows how journald can be corrupted in real time and the systemd crash totally. But with deletion don't, so is a bug and a lie of Lennart Potter says "Is more secure than plan text" Lenny Potter say (lies) to Linux community that the motivation for binary log format is the security, well... and the stability??. In addition, read the text in the video for more details or here: FACTS 1 ================================== 1.- IF A HACKER GAIN ROOT ACCESS TO A SERVER, JUST WANT USE IT FOR SQLi SCANNER, SSH VULN SCANNER OR BOTNET 2.- USING SYSLOG/RSYSLOG/SYSLOG-NG, THE HACKER CAN EDIT THE LOGS, BUT IF YOU ARE USING A NIDS, IDS, ALL GOOD SYSADMIN KNOW IF THE SERVER WAS COMPROMISED 3.- SECURE.LOG, AUDIT.LOG AND MORE, CAN SHOW TO A SYSADMIN THAT THE SERVER WAS COMPROMISED TOO 4.- IF THE SERVER HAS A DISK OR SYSTEM FAILURE, FOR VIEW THE LOG OF JOURNALD A DVD OF CENTOS OR FEDORA IS REQUIRED AND SETUP THE PATH OF THE FILE OF JOURNAL 5.- IF THE SERVER HAS A DISK OR SYSTEM POWER FAILURE USING SYSLOG, THE LOG CAN BE READED USING ANY LINUX DISTRIBUTION, EASILY WITH SIMPLE COMMANDS 6.- SYSLOG CAN BE USED WITH GREP, CUT, AWK, PIPES AND A LOT OF STRING PROCESSORS THAT JOURNALD CANNOT!! 7.- THE ROOT CAN EDIT PLAIN TEXT LOG AND BINARY LOG, _BUT_ IN A CENTOS 7 (RHEL7 CLON) *THE MOST STABLE REDHAT PRODUCT*, IF A BINARY LOG IS EDITED, THE SYSTEM CRASH!!! (USING JOURNALD) 8.- IF THE BINARY LOG IS DELETED, THE SYSTEM DON'T ALERT US, JUST SAY "NO LOGS", OKEY YOU KNOW THAT SOMEBODY WAS DELETED THE LOG, YOU ARE PWNED BUT NO ADITIONAL INFO? 9.- YOU SYSADMIN, PREFER, AN EDITED BUT ALERTED INTRUSION IN A PRODUCTION SERVER ??, OR A CRASH AT 3AM AND CUSTOMERS CALLING TO HELP DESK??, TELL ME.. PS: TELL ME LENNART, TELL ME PLEASE, WHAT IS THE JUSTIFICATION FOR BINARY LOG ON SERVER??? FACTS 2 ================================== A GOOD SECURITY DESIGN: ====================== 1.- IN CASE THAT SOMETHING TRY TO ACCESS TO JOURNAL AND IS NOT JOURNALD (PID 1 CHILD) , KILL THE PROCESS PID AND ALERT TO THE ROOT, BLOCK ANY ACESS UNTIL THE ROOT LOG IN WITH A UNIQUE KEY PROVIDED BY EMAIL USING A LOCAL MTA 2.- IF THE LOG ARE DELETED, THE SAME THAT POINT 1 AND REPLACE WITH THE LATEST BACKUP, THAT CAN BE SAVED IN A REMOTE HOST IF YO DO NOT USES A CENTRALIZED LOGGING LIKE A SIR
How to Mount  CD-ROM / DVD-ROM In Linux
 
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In this tutorial i will show you how to Mount/Unmount the CD Or DVD in the Linux Server via the command line. They are many ways to mount the drives ,but this is the most common method Note : Root access is required to perform this operation
Views: 19093 Dhamodharan C
Linux Initialization Boot into Single User Mode
 
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This video reviews how to change the runlevel of a linux system and modify the /boot/grub/ grub.conf file to show a verbose boot process.
Views: 25563 mrholverson
Linux Boot Process (RHEL 7 Latest)  From ServerGyan
 
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Linux Boot Process (REHL 7) 1- The machine is powered on. The system firmware (BIOS --Basic Input/Output System or UEFI -- Unified Extensible Firmware Interface) runs POST, and starts to initialize some of the hardware. You can configure this using F2 on your system/ server. 2- The system firmware searches for a bootable device, either configured on BIOS or UEFI boot firmware or by searching master boot recored (MBR).This order is configured in BIOS. You can configure this using F2 screen for by pressing certain key combination. 3- The system firmware reads a boot loader from disk, then passes control of the system to boot loader. On REHL 7 this will be GRUB2 You can configure this using grub2-install 4- The boot loader loads configuration from disk and presents the user with possible configuration to boot. You can configure this using /boot/grub2/grub.cfg 5- Either user makes a choice or automatic timeout happens, the boot loader loads the configured KERNEL and INITRAMFS from disk and places then in memory. An INITRAMFS is a gzip-ed CPIO archive containing kernel modules for all hardware necessary at boot, init-scripts and more. ON RHEL 7, the INITRAMFS contains an entire usable system by itself. You can configure using: /etc/dracut.conf 6- The boot loader hands control of the system over to kernel, passing in any options specified on kernel command line in boot loader and the location of the INITRAMFS in memory. You can configure using: /etc/grub.d/ /etc/default/grub, and /boot/grub2/grub.cfg 7- Now the kernel initializes all hardware for which it can find a driver in the initramfs, then executes /sbin/init (as PID 1). On REHL 7 the initramfs contains a working copy of systemd as /sbin/init, as we all a udev daemon. Configure using init and command line parameters. 8- The systemd instance from the initramfs executes all unit of initrd.target target. This includes actual mounting on /sysroot configure using /etc/fstab 9- The kernel root file system is switched form initramfs root file system to system root file system that was previously mounted on /sysroot.systemd then re-executes itself using a copy of systemd installed on the system. 10- Systemd looks for a default target, either passed from the kernel command line or configured on the system, then starts (and stops) units to comply with the configuration for that target, solving dependencies between units automatically. In its essence, a systemd target is a set of units that should be activated to reach a desired system state. These targets will typically include at least a text-bases login or a graphical login screen with appear.
Views: 959 Server Gyan
Recuperar o boot após erro no FSTAB
 
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Iniciar em modo de recuperação CTRL+D senha root mount –o remount,rw / vim /etc/fstab - corrigir e salvar reboot CentOS 6.7 Release (Final) VirtualBox 4.3.28 r100309 Fedora release 22 (Twenty Two)
Managing SWAP Partitions  in RHEL 6 - CentOS 6
 
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Managing SWAP Partitions in RHEL 6 - CentOS 6 If the system needs more memory resources and the RAM is full, inactive pages in memory are moved to the swap space. Swap space is a portion of a hard disk drive (HDD) that is used for virtual memory. It can be whole disk partition or just a file inside an existing partition or a combination of swap partitions and swap files. Hope you found it informative and useful. Any questions or comments are welcomed. Notes can be found at http://www.ceyhunkirmizitas.net/videos/managing-swap-partitions-rhel-6-centos-6/ Website: http://www.sysadminshowto.com/ Facebook Page: https://www.facebook.com/SysAdminsHowto/ Twitter: https://twitter.com/SysAdmHowto Google Plus: http://google.com/+Sysadminshowtos
Views: 754 SysAdmin
Update the kernel
 
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Update the kernel package appropriately to ensure a bootable system First tle's install a new kernel # yum install -y kernel After the install, we need to reboot the server, and then open a terminal and run this command: # awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg Let's run this before in order to see how looks the output Is hard to rememeber this command, instead of the previous you can execute this # grep menuentry /etc/grub2.cfg You will see the difference the grub2-set-default command is used to set a default kernel in the boot loader the number 0 is the first number 1 is this one, the previous before install the new kernel
Projet NAS Linux: installation système (7/12)
 
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http://reussiraveclinkedin.com/offre-gratuite-conseils-description-emploi.html - installation système Cette vidéo a pour but d'installer le système et configurer le système de telle sorte qu'il puisse démarrer par lui-même. Voici le procédure exécutée dans le video: Monter les partitions: ------------------------------ mount /dev/sda2 /mnt mkdir /mnt/boot mount /dev/sda1 /mnt/boot mkdir /mnt/var mount /dev/md0 /mnt/var mkdir /mnt/home mount /dev/md1 /mnt/home Installer le système: ---------------------------- pacstrap -i /mnt base base-devel Note sur base-devel: Pour une meilleure sécurité, vous ne devriez pas installer base-devel Configurations reliées aux systèmes de fichiers: ------------------------------------------------------------------- mdadm --detail --scan >> /mnt/etc/mdadm.conf genfstab -U /mnt > /mnt/etc/fstab Parenthèse reliée aux options de mount 3 temps associés à chaque fichier access time, modif time et inode info modif time inode info = Metadata: timestamp, ownership, permissions Options de mount: atime: Change le access time pour toutes les lectures. En d'autres mots, chaque lecture génère une écriture noatime: Aucune lecture modifie le access ts relatime: Seulement modifie le access ts si sa valeur actuelle est plus ancienne que le last modif ts = très bon compromis Changer la racine: ------------------------- arch-chroot /mnt /bin/bash Config Locale: -------------------- vi /etc/locale.gen Enlever la mise en commentaire pour les localisations désirée locale-gen vi /etc/locale.conf Écrire 'LANG=en_US.UTF-8' Config reliée au temps: -------------------------------- ln -sf /usr/share/zoneinfo/America/Montreal /etc/localtime hwclock --systohc --utc Configurer le mode utc pour le HW clock. L'autre option est localtime mais ce choix est inférieur surtout si vous habité dans une zone où le temps change selon les saisons. La seule raison pour choisir localtime est si vous avez un dual boot avec MS Windows. Config réseau: -------------------- echo kimper2 > /etc/hostname vi /etc/hosts pacman -S pkgfile net-tools pkgfile --update pkgfile ifconfig Trouver le nom de l'interface ifconfig Enable client DHCP systemctl enable [email protected] Installer le bootloader: ------------------------------- pacman -S intel-ucode grub efibootmgr grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=grub --recheck grub-mkconfig -o /boot/grub/grub.cfg Installer ssh: ------------------ pacman -S openssh systemctl enable sshd.service Créer un usager: ----------------------- useradd -m -g users -s /bin/bash lano1106 passwd lano1106 chfn lano1106 Changer le mot de passe du root: passwd exit umount -R /mnt reboot installation système https://youtu.be/DcSzFK1zmV4 https://www.youtube.com/channel/UCUtN2juZFxfvuVvQtn6n5NA
How to Install Centos 6 on Vmware : Step by Step | Vaibhav Pawar
 
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In this Tutorial, we Explained How to Install Centos 6 on Vmware with step by step installation | Vaibhav Pawar Website : http://www.geekyvaibhav.com/ My Gaming Channel VaibhavisLive : ▶ https://www.youtube.com/channel/UCpMQ27Sj_e2-UsM_0fNazRw Stay Connected With Me : Snapchat► vaibhav_pawar Instagram► https://www.instagram.com/_vaibhav_pawar Facebook ► https://www.facebook.com/VaibhavPawar1998 Twitter ► https://twitter.com/vaibhavpawar924 This is all about How to install Centos 6 on Vmware. If you want to ask any question about this Video comment Below and always Remember to stay connected with me and my website GeekyVaibhav.com for Latest updates about the Linux. ------------------------------------------------------------------------------------------------------------ ON & ON Music provided by NoCopyrightSounds. Video Link: https://youtu.be/TW9d8vYrVFQ Download Link: https://NCS.lnk.to/SkyHigh ▽ Follow Cartoon SoundCloud https://soundcloud.com/cartoonbaboon Facebook https://www.facebook.com/cartoondband ▽ Follow Daniel Levi (vocalist) Facebook http://facebook.com/daniellevimusic Website http://daniellevi.e
Views: 728 Vaibhav Pawar
Lecture11(RH124)-Archive and Copy Files Between Systems
 
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Archive and Copy Files Between Systems Archive and Copy Files Between Systems: It is useful to store a group of files in one file for easy backup, for transfer to another directory, or for transfer to another computer. An archive file is a collection of files and directories stored in one file. Linux offers a rich set of protocols you can use to copy files between computers such as scp, sftp and rsync. Archive Files: An archive file is a collection of files and directories that are stored in one file. The archive file is not compressed it uses the same amount of disk space as all the individual files and directories combined. A compressed file is a collection of files and directories that are stored in one file and stored in a way that uses less disk space than all the individual files and directories combined. An archive file is not compressed, but a compressed file can be an archive file. Tar Command: Tar stand for Tape Archiver. The tar program is used to create, maintain, modify, and extract files that are archived in the tar format. This is a good way to create backups and archives. The tar command does not compress the files by default. Archiving and compressing files are useful when creating backups and transferring data across a network. A leading - is not required for tar options it can work with - or without -. Compression Tools: The Archive can be compressed using compression tools gzip, bzip2, or xz. Gzip compression is most frequently used to create (.tar.gz) or (.tgz) files, tar command also supports bzip2 and xz compression. This allows you to create bzip2-compressed files, often named (.tar.bz2), (.tar.bz), or (.tbz) files. The xz compressed files, named (.tar.xz). To do so, just replace the -z for gzip in the commands here with a -j for bzip2 and -J for xz. Gzip is faster, but it generally compresses a bit less, so the get larger file. Bzip2 is slower, but it compresses a bit more, so get a smaller file. Copying Files: Either a live or home server, moving files between local machines or two remote machines is a basic requirement in Linux. There are many ways to achieve that such as SCP, SFTP and Rsync. SCP to Copying Files: SCP (Secure Copy) is based on SSh (Secure Shell) and SCP is used to transfer file from local host to remote host securely. It utilizes the SSH server for authentication and encrypted data transfer. Basic syntax of SCP: scp source_file_name [email protected]_host:destination_folder SFTP to Copy Files: SFTP, which stands for SSH File Transfer Protocol, or Secure File Transfer Protocol, is a separate protocol packaged with SSH that works in a similar way over a secure connection. It is a command-line program for transferring files securely over a network connection. Unlike the Secure Copy Protocol (SCP), SFTP additionally provides remote file system management functionality, allowing applications to resume interrupted file transfers, list the contents of remote directories, and delete remote files. Rsync to Copy Files: Rsync (Remote Sync) is a most commonly used command for copying and synchronizing files and directories remotely as well as locally in Linux systems. With the help of rsync command you can copy and synchronize your data remotely and locally across directories, across disks and networks, perform data backups and mirroring between two Linux machines. # rsync options source destination
Views: 190 Ahmad Ali
Ubuntu : Adding Screen Resolutions
 
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Additionally you can find my video courses on Pluralsight: http://pluralsight.com/training/Authors/Details/andrew-mallett and take time to see my own site http://www.theurbanpenguin.com Adding additional screen resolutions to Ubuntu. I needed 1280 * 720. This is how it is dome
Views: 67677 theurbanpenguin
journald Logging
 
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Logging with journald
Views: 69 Linux Learner
RHEL Tutorial 7 RHEL Partitions
 
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Use this Linux tutorial for beginners created in 2015 to learn Red Hat Linux and CentOS free in English and 1080p! You can count on this video to get you started with the basics even if you have no experience using Linux! See see immediately why Linux is worth learning and using followed by a basic familiarization with the graphic user interface. See more to skip to an exact chapter in the course. Get a coupon to the full course on Udemy at https://jerrybanfield.com/product/red... Click on a time point below to skip straight to the chapter in this free Linux tutorial series. You can see the entire table of contents for the video here! 3:03 Why learn Linux and introduction with Ermin. 17:46 Introduction to the free video series and how to get help with your Linux questions. 19:26 Installing RedHat or CentOS with minimal modifications to your current system beginning with downloading, installing and configuring VirtualBox on Windows 8.1. 31:47 Create a Red Hat virtual machine including where to download Red Hat Linux and how to install it in a virtualized environment. 49:53 Installing Red Hat Enterprise Linux. 1:04:30 Completed installation process with Red Hat Enterprise Linux, rebooting, and doing post installation procedures. 1:22:10 Installing RedHat or CentOS with a dual boot approach on Windows 8 starting with how to dual boot Red Hat and windows 8. 1:40:52 Finished installation with dual boot and second steps to running the Linux operating system on a windows computer. 1:49:07 Linux Graphical User Interface (GUI). 2:02:44 Basic familiarization with Linux Graphical user interface. 1:59:12 Learning Linux file systems and the system monitor in the Linux graphical user interface. Looking at processes running and more. 2:12:48 Basic Linux commands for beginners. Learn the Linux command line. File system navigation. Commands "ls, cd, pwd." 2:29:03 File system commands in more detail. Change directory command in with ~. 2:43:11 Finding files. Commands "find, locate, updatedb, man" starting with getting to know the manual. 3:02:58 Permissions for files and and folders. Get started with "chown, chmod." 3:16:58 Changing file and folder ownership and permissions between users. More about commands "chown, chmod." 3:25:45 Basic Linux tasks: Move, delete and copy files. Commands "mv, rm, cp." 3:38:44 Linux commands "grep, pipe, echo, cat." 3:57:39 Introduction to the default packet manager for Red Hat Linux Enterprise and for CentOS called yum packet manager. 4:17:28 Essential options used on a daily basis with the yum packet manager. 4:31:55 Rpm packet manager. 4:39:35 How to get more help and videos about Red Hat Linux Enterprise and CentOS. Thank you for watching! facebook: https://www.facebook.com/komcluez.add twitter : https://twitter.com/TwitKomcluez pinterest : https://in.pinterest.com/komcluez/ tumblr : https://www.tumblr.com/login?redirect_to=%2Fdashboard linkedin : https://www.linkedin.com/profile/preview?vpa=pub&locale=en_US blogger : https://draft.blogger.com/home?bpli=1&pli=1 instagram : https://www.instagram.com/komcluez/ flickr : https://www.flickr.com/people/[email protected]/ snaphotmobi : http://www.snaphotmobi.com/user/komcluez plus.google : https://plus.google.com/115052738082005502740/posts YOUTUBE COMPUTER COURSE : https://www.youtube.com/playlist? list=PL8eXNwNaQPNjh4FGSQWSqJUY01HH2y3eZ
Views: 117 komcluez admin
Arch Linux on SSD with encryption (Tutorial)
 
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This is my first tutorial video. I try to cover a basic Arch installation as succinctly as possible while going over encryption. Hopefully it's helpful! Some additional notes: 1) If you want to enable discard/TRIM functions on your encrypted/de-crypted partition, you will need to append ":allow-discards" to your cryptdevice line in your bootloader configuration file (ie: cryptdevice=/dev/sda2:root:allow-discards). Thereafter, add the appropriate mount options to your fstab file as they apply to the filesystem you've chosen, or just periodically run fstrim. 2) I use the Samsung 850 Pro and have had problems with the drive freezing and being reset while in use. I haven't seen this problem with the EVO line. If you are experiencing this problem, append "libata.force=noncq" to your kernel parameters in your bootloader's configuration file. 3) "Noop" is purportedly an ideal I/O scheduler for SSDs. If you don't want to take the time to compile a kernel, you can simply append "elevator=noop" to your kernel parameters. This is what my "append" line looks like, to explain the above: cryptdevice=/dev/sda2:root:allow-discards root=/dev/mapper/root rw quiet vga=895 elevator=noop libata.force=noncq
Views: 24406 MirrorMatter
Modify the system bootloader RHEL7
 
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Modify the system bootloader RHEL7 cat /etc/default/grub GRUB_TIMEOUT=5 --- Time wait GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.luks.uuid=luks-7a2105cf-4211-4739-9359-82682b47f022 rd.lvm.lv=vg0/root rd.lvm.lv=vg0/swap quiet" --- Options passed to the kernel GRUB_DISABLE_RECOVERY="true" These are the most important lines in the grub config file After any changes you need to update the grub2.cfg file located on /boot/grub2/grub.cfg grub2-mkconfig -o /boot/grub2/grub.cfg If you have more than one kernel installed on your system and you want to switch to a previous kernel as default... grub2-set-default 0 ---- 0 is the first entry, 1 is the second and so on. grep ^menuentry /boot/grub2/grub.cfg Let's install a new kernel and test this. I already update this VM, so let's check the entries on the grub.cfg file
Ajuda Linux - Dia 624 - Trabalhando com ACLs - parte 1
 
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Vídeo explicativo: Trabalhando com ACLs - parte 1 Curso Online CentOS Linux System Administrator I: 20 HORAS: http://cursos.escolalinux.com.br/centos-linux-system-administrator-i-20-horas Verificar se o sistema de arquivos suporta acl: # tune2fs -l /dev/sda1 | grep options Default mount options: (none) Alterar fstab para suportar acl: # more /etc/fstab /dev/sdb1 /app ext4 defaults,acl 1 1 Alterar via linha de companhdo # tune2fs -o +acl /dev/sdb1 Verificar suporte a acl: # tune2fs -l /dev/sdb1 | grep options Default mount options: acl Verificar acl de um arquivo: # getfacl /etc/apache2/apache2.conf # file: etc/apache2/apache2.conf # owner: root # group: root user::rw- group::r-- other::r-- Configurar acl pra um arquivo: # setfacl -m u:phbols:rwx /etc/apache2/apache2.conf Verificar acl de um arquivo: # getfacl /etc/apache2/apache2.conf Um oferecimento: Linux Solutions - http://www.linuxsolutions.com.br
Views: 92 Linux Solutions
dmesg, --human (v2.23+) and few other options
 
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dmesg [1] is part of util-linux, it prints out the contents of Linux Kernel's ring buffer. Back in February [2] I learned there is a new `--human` (since v2.23 (2013-04-25)), kind of new to Gentoo since the version wasn't even stabilized at the time. `--human` or `-H` (human-readable output) is a shorthand for `--color` and `--reltime` (relative time), and in pager. Coloring is really great to have, it helps to skim through the logs. Yesterday (2014-05-17), 2.24.1-r2 (upstream released on 2014-01-20) just got stabilized and sysvinit-2.88-r7 also got stabilized. Before two newest stable versions, 2.22.2 and 2.88-r4, both installed on 2013-03-04. It's been more than a year that I updated them. The output works without needing to reboot. Commands in the recording: (0:05) dmesg --human (0:18) dmesg --color=always --reltime | less (0:30) dmesg --color --time-format=ctime (0:33) dmesg --color --time-format=iso (0:35) dmesg --color --time-format=delta (0:43) dmesg --color --time-format=delta --show-delta (0:48) dmesg --color --notime (0:55) dmesg -H --follow They are self-explained, don't think I need to add words for them, if you don't know what they does just check with dmesg(1). I never really paid attention to `dmesg`, I know it's there, around somewhere, but never even bothered reading its manpage. I was surprised to see some many options that it has, the options used in the video only covers a portion. The last command is like having `tail -f/F`, dmesg is really handy. $$$ * from Gentoo sys-apps/util-linux-2.24.1-r2 (Portage tree stable 2014-05-14, upstream 2014-01-20) * In C * By Karel Zak, Theodore Ts'o, et al. * GPLv2 [1]: http://www.kernel.org/pub/linux/utils/util-linux/ [2]: http://forums.gentoo.org/viewtopic-t-984828.html
Views: 949 Yu-Jie Lin
Configure Ubuntu NFS Server
 
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Configuring Ubuntu NFS server and connecting it as a vmware nfs datastore. By John Zappia
Views: 25681 John Zappia
NFS File Server Security Demonstration
 
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Scott Rigg ITMS 448 Individual Project. It covers an improperly configured NFS share being exploited, and how to prevent what happened.
Views: 336 Scott Rigg
08 Using SetGID
 
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Views: 136 Gul Zaman
Understanding the Use of /etc /securetty - LFCS Video Course - by Sander van Vugt
 
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In this video you will learn how to take care of your security when you remotely connect to your Linux server. The video 'Understanding the Use of etc securetty' is a free video lesson from the video course Linux Foundation Certified System Administration. The complete LFCS course will give you practical and reliable training so you get all the information you need to pass the LFCS exam, as well as the real-world experience you need to fully understand concepts and practice your skills. The video training contains 14 hours of video training, including whiteboard concept teaching, live CLI work, screencast teaching, hands-on labs, and practice exam walkthroughs. Topics in this LFCS video course: Essential Commands, User and Group Management and Permissions, Networking, Operating Running Systems, Storage Management, Service Configuration, Managing Virtualization. For more info go to https://www.rhatcert.com/LFCS GET 60% OFF WITH PROMO CODE: SANDER60 Do you wish to learn more? Buy one of my video courses on pearsonitcertification. 60% OFF WITH PROMO CODE: SANDER60 using the links below: RED HAT – Linux Performance Optimization Complete Video Course: Red Hat EX442 https://www.rhatcert.com/linux-performance-optimization - RHCSA in Red Hat OpenStack LiveSessons https://www.rhatcert.com/RHCSA-in-Red-Hat-OpenStack - OpenStack Certification Complete Video Course https://www.rhatcert.com/openstack-certification - RHCSA Complete Video Course https://www.rhatcert.com/RHCSA-Complete-Video-Course- - RHCSA Exam Prep Video Workshop (download) https://www.rhatcert.com/RHCSA-Exam-Prep-Video-Workshop-download - RHCSA Exam Prep Video Workshop (streaming) https://www.rhatcert.com/RHCSA-Exam-Prep-Video-Workshop-stream - RHCE Complete Video Course https://www.rhatcert.com/RHCE-Complete-Video-Course- - RHCE Exam Prep Video Workshop (download) https://www.rhatcert.com/RHCE-Exam-Prep-Video-Workshop-dwnld - RHCE Exam Prep Video Workshop (streaming) https://www.rhatcert.com/RHCE-Exam-Prep-Video-Workshop-stream - RHCSA and RHCE Complete Video Course Library https://www.rhatcert.com/RHCSA-and-RHCE-Complete-Video-Course-Library - RHCSA/RHCE 7 Cert Guide (book) https://www.rhatcert.com/RHCSA-RHCE-7-Cert-Guide - RHCSA/RHCE 7 Cert Guide (ebook) https://www.rhatcert.com/Red-Hat-RHCSA-RHCE-7-Cert-Guide-ebook - RHCSA/RHCE 7 Cert Guide PREMIUM https://www.rhatcert.com/Red-Hat-RHCSA-RHCE-7-Cert-Guide-Premium-Edition - RHEL 7 New Features LiveLessons https://www.rhatcert.com/RHEL-7-New-Features- - Linux High Availability Clustering Complete Video Course https://www.rhatcert.com/linux-high-availability LINUX FOUNDATION - Linux Foundation System Administrator (LFCS) - https://www.rhatcert.com/LFCS - Linux Foundation Engineer (LFCE) - https://www.rhatcert.com/LFCE – LFCS and LFCE Complete Video Course Library https://www.rhatcert.com/LFCS-LFCE MICROSOFT LINUX - Linux on Azure https://www.rhatcert.com/linux-azure GENERIC LINUX - Ansible Fundamentals - https://www.rhatcert.com/ansible-fundamentals - Linux Under the Hood - https://www.rhatcert.com/linux-under-the-hood - Bash Scripting Fundamentals https://www.rhatcert.com/Bash-Scripting-Fundamentals - Advanced Bash Scripting https://www.rhatcert.com/Advanced-Bash-Scripting - Ubuntu Server Essentials LiveLessons https://www.rhatcert.com/Ubuntu-Server-Essentials - Novell Cluster Services for Linux and NetWare https://www.rhatcert.com/Novell-Cluster-Services-for-Linux-and-NetWare COMPTIA LINUX+ / LPI - LPIC-1 (Exam 101) LiveLessons https://www.rhatcert.com/LPIC-1-Exam-101 - LPIC-1 (Exam 102) LiveLessons https://www.rhatcert.com/LPIC-1-Exam-102 - CompTIA Linux+ / LPIC-1 Complete Video Course https://www.rhatcert.com/CompTIA-Linux-plus-LPIC-1 - Beginning Linux System Administration https://www.rhatcert.com/Beginning-Linux-System-Administration - Linux Security Complete Video Course https://www.rhatcert.com/linux-security - Linux High Availability Clustering Complete Video Course https://www.rhatcert.com/linux-high-availability VMWare - vSphere 6 Foundations (Exam #2V0-620) Complete Video Course https://www.rhatcert.com/vSphere-6-Foundations-Exam-2V0-620 Need help to find the right video course? Check https://www.sandervanvugt.com/linux-video-courses Questions? Contact me via https://www.sandervanvugt.com/contact Stay informed about new (free) courses and promotions by subscribing to my updates via https://www.sandervanvugt.com Share this video: https://www.youtube.com/watch?v=hANTsGbt1zU
Linux CentOS 6 Installation
 
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Blog Address : http://sunguruitchannel01.blogspot.kr 1. Linux CentOS 6.4 Download : - http://www.centos.org - Downloads - Mirrors - Mirror list - Download 2. Virtual Machine for Linux CentOS 6.4 CPU : 1 Socket / 1Core MEM : 2GB HDD : 20GB ( SCSI ) NIC : 1GB 1 Port 3. Disk Partitions /boot 200MB SWAP 2048MB / Remainding Capacity

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