#To create the logical volume, we will use:
lvcreate -L 3G -n lvstuff vgpool
The -L command designates the size of the logical volume, in this case 3 GB, and the -n command names the volume. Vgpool is referenced so that the lvcreate command knows what volume to get the space from.
#Format and Mount the Logical Volume One final step is to format the new logical volume with a file system.
# device-spec mount-point fs-type options dump pass
LABEL=/ / ext4 defaults 1 1
/dev/sda6 none swap defaults 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
# Removable media
Linux Runlevels Explained
A runlevel is one of the modes that a Unix -based operating system will run in. Each runlevel has a certain number of services stopped or started, giving the user control over the behavior of the machine. Conventionally, seven runlevels exist, numbered from zero to six.
After the Linux kernel has booted, the init program reads the /etc/inittab file to determine the behavior for each runlevel. Unless the user specifies another value as a kernel boot parameter, the system will attempt to enter (start) the default runlevel. Standard run levels for Red Hat based distributions Run Level Mode Action
0 Halt Shuts down system
Overview
The following is an extremely simplified view of how SSL is implemented and what part the certificate plays in the entire process.
Normal web traffic is sent unencrypted over the Internet. That is, anyone with access to the right tools can snoop all of that traffic. Obviously, this can lead to problems, especially where security and privacy is necessary, such as in credit card data and bank transactions. The Secure Socket Layer is used to encrypt the data stream between the web server and the web client (the browser).
SSL makes use of what is known as asymmetric cryptography, commonly referred to as public key cryptography (PKI). With public key cryptography, two keys are created, one public, one private. Anything encrypted with either key can only be decrypted with its corresponding key. Thus if a message or data stream were encrypted with the server's private key, it can be decrypted only using its corresponding public key, ensuring that the data only could have come from the serve
##Add remote host to Nagios server
###On Remote Host ####Pre-requisite #####Below listed package should be installed i.gcc ii. xinetd iii.openssl
#####Step 1
| sudo apt-get install unzip; | |
| wget -O /tmp/chromedriver.zip http://chromedriver.googlecode.com/files/chromedriver_linux64_19.0.1068.0.zip && sudo unzip /tmp/chromedriver.zip chromedriver -d /usr/local/bin/; |
Environment
Red Hat Enterprise Linux 7 Issue
How to set up yum repository to use locally-mounted DVD with Red Hat Enterprise Linux (RHEL) 7
Would like to upgrade server from RHEL 7.x to RHEL 7.y
Have a secure environment that will never be connected to the internet, but still needs to be updated
Way to update the packages on server, with no satellite server and servers disconnected from internet
| #!/bin/bash | |
| ###################################### | |
| # copyright@nu11secur1ty # | |
| ###################################### | |
| # Stop iptables | |
| /etc/init.d/iptables stop | |
| yum install wget | |
| cd ~ | |
| # you can change if you want! |
Warning:
The use of direct cable connections without network switches is not supported for bonding.
The failover mechanisms described here will not work as expected without the presence of network switches.
See the Red Hat Knowledgebase article Why is bonding in not supported with direct connection using crossover cables? for more information.
Note:
The active-backup, balance-tlb and balance-alb modes do not require any specific configuration of the switch.
Other bonding modes require configuring the switch to aggregate the links.