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CentOS 6.9 Docker

CentOS 6.9 Docker

public key

rpm –import

ELRepo Centos6?

rpm -Uvh


rpm -Uvh (external link)


yum –enablerepo=elrepo-kernel install -y kernel-lt

yum –enablerepo=elrepo-kernel install -y kernel-ml

vi /etc/grub.conf


# grub.conf generated by anaconda # default=0 timeout=5 splashimage=(hd0,0)/boot/grub/splash.xpm.gz hiddenmenu title CentOS (3.10.28-1.el6.elrepo.x86_64) root (hd0,0) kernel /boot/vmlinuz-3.10.28-1.el6.elrepo.x86_64 ro root=UUID=0a05411f-16f2-4d69-beb0-2db4cefd3613 rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us […]

“This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.”

two solutions

in the plugin configuration file disable plugin

vim /etc/yum/pluginconf.d/subscription-manager.conf

enabled=0 or register to the satellite

ps command #1 – Basic

A linux command to monitor the system process consuming resources on the server. If you are working on a linux system it is good to have at least basic understanding of this command.

ps program or command when run take a snapshot of running processes at that time and display on the terminal which can […]

memory usage in Linux per process

Not because I really want to; but because I just don’t have the money to spend on a 2+ GB RAM VPS and I would like to run Jira.

In order to do this I keep a close eye on the processes running and how much memory each takes.

For this I found […]

Top Show Running Processes

he Linux top command is used to show all the running processes within your Linux environment. This guide shows you how to use the top command by explaining the different switches available and the information that is displayed:

How To Run The Top Command

In its basic form all you need to do to show […]

Install Microsoft SQL Server On CentOS Linux

In December 2016 Microsoft made their SQL Server database available in Linux. Here we’ll cover how to install and perform basic setup of MSSQL in the RHEL based Linux distribution CentOS.

Install MSSQL In CentOS 7

First we’ll set up the repository file, Microsoft provide a copy of this for RHEL here:

We’ll use […]

Dovecot can’t start with error pop3-login & imap-login not supported protocol family

vim /etc/dovecot/dovecot.conf — listen = *, :: ? listen = * — service dovecot restart

If you see this error after Dovecot 2.0.x was installed: Error: service(pop3-login): listen(::, 110) failed: Address family not supported by protocol Error: socket() failed: Address family not supported by protocol Error: service(pop3-login): listen(::, 995) failed: Address family not supported by […]

Disable or enable the IPv6 protocol

Disable or enable the IPv6 protocol

Disabling IPv6 support in Red Hat Enterprise Linux 7

Disable ipv6 built-in kernel module.

Edit /etc/default/grub and append ipv6.disable=1 to GRUB_CMDLINE_LINUX like the following sample: Raw

GRUB_CMDLINE_LINUX=” crashkernel=auto ipv6.disable=1″

Run the grub2-mkconfig command to regenerate the grub.cfg file: Raw

# grub2-mkconfig -o […]



1>first create partion

#partprobe -s

#pvcreate /dev/sda?

#pvcreate /dev/sda?

#vgcreate vg0 /dev/sda? /dev/sda?




#lvcreate -n lvm0 -L 150M vg0 (where -n—->name, -L—>length)


#mkfs.ext3 /dev/vg0/lvm0

#mkdir /mnt/lvm1

#mount /dev/vg0/lvm0 /mnt/lvm0

#vim /etc/fstab /dev/vg0/lvm0 /mnt/lvm0 ext3 defaults 0 0

#mount -a


Steps To Extend The […]

Linux Boot Process

*************** Summary =======

A) START – BIOS (Basic Input Output System) = when BIOS load in RAM Called BOOT STARPPING – CMOS = Called this process KERNAL LANDING – MBR in Hard Disk – BOOTLOADER – KERNEL – INITRD IMAGE – Inittab = Upto this process called USER LANDING

B) There are two tyeps of […]

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