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Confirm the kernel.
# uname -r -
Confirm the initial allocated size
# df -hFilesystem Size Used Avail Use% Mounted on
/dev/xvda1 7.9G 797M 6.7G 11% /
tmpfs 498M 0 498M 0% /dev/shm
# lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT xvda 202:0 0 15G 0 disk └─xvda1 202:1 0 8G 0 part /
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Install EPEL6 Repo
# wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm # rpm -ivh epel-release-6-8.noarch.rpm -
Install the dracut & cloud-utils growpart modules-growroot
# yum install -y dracut-modules-growroot cloud-utils-growpart -
The initrd need...
configure spam expert in cPanel/WHM IP-based Authentication
Posted in Whm/Cpanel on Nov 04, 2018
Navigate to "Exim Configuration Editor" in WHM.
Choose "Advanced Editor". Add the following in "Section: POSTMAILCOUNT" (chaning SMARTHOST to your SMTP hostname)
smarthost_dkim:
driver = manualroute
domains = !+local_domains
require_files = "+/var/cpanel/domain_keys/private/${sender_address_domain}"
# Exclude null sender messages from relaying via the smarthost
condition = ${if or {{!eq{$sender_address}{}} {!eq{$sender_host_address}{}}}}
transport = remote_smtp_smart_dkim
route_list = $domain SMARTHOST::587
smarthost_regular:
driver = manualroute
domains = !+local_domains
# Exclude null se...How to Set or Change Hostname in CentOS 7
Posted in Linux Servers on Oct 31, 2018
to change or set a CentOS 7 machine hostname, use the hostnamectl
hostnamectl set-hostname your-new-hostnamehostname command you can also use hostnamectl command to display a Linux machine hostname
hostnamectlNew hostname, a system reboot is required, issue one of the below commands in order to reboot a CentOS 7 machine
init 6
systemctl reboot
shutdown -rHow to extend the volume size on ec2 instance aws
Posted in Amazon Cloud Services, Linux Servers on Oct 30, 2018
2.6.32-431.29.2.el6.x86_64
Check Apache concurrent Connections using Netstat command
Posted in Linux Servers on Oct 12, 2018
When your server is hitting high & overload, you might want to check, how many active connections are there and which IP take maximum of hit/connection from apache.
To Count Apache concurrent connection's, use any of the below commands.
netstat -nt | grep :80 | wc -l
netstat -plan|grep :80 | wc -l
netstat -an | grep 'EST' | wc -l
netstat -ant | grep ESTABLISHED | grep :80 | wc -l
ps -A | grep httpd | wc -l
ps -ef | grep http | wc -l
ps aux | grep httpd | wc -l
ps aux | grep http | grep -v "\(root\|grep\)" | wc -lTo print the active Internet connections to the server at port 80 and sor...[Read more...]
How to sync the data from one server to another server via ssh
Posted in Linux Servers on Oct 12, 2018
Sync the data from one server to another server using rsync on linux server.
Rsync is one of common ways to copy files and folders between two servers, whether the servers are local or remote.
Login to the server via ssh OR putty Gen windows application.
ssh root@oldserverIP
rsync -ravP /home/user/file_name root@xx.xx.xx.xx:/home/user/dHere first refers the source path from where you are syncing the file
and xx.xx.xx.xx refers destination server IP and the destination path where you would like to save the data.
Please check the following usefull rsync variables :
-v : Verbose
-a : archiv...How to change the hostname of your linux virtual nodes india
Posted in Linux Servers on Oct 11, 2018
Change Virtual Compute Nodes Hostname
Please follow the below steps to change the hostname of your Virtual Compute Node.
Login to your Virtual Compute Node as a root user.
To check the current hostname of your server, run the command
hostnameTo change the hostname of your server, type new name followed by hostname
hostname new-nameChange the hostname under the path /etc/sysconfig/network
vi /etc/sysconfig/networkEdit the content of the file so that it looks like this
HOSTNAME=new-name
Ubuntu/Debian
Next, edit the /etc/hostname file and update hostname:
vi /etc/hostnameEdit the /etc/hosts f...[Read more...]
How to Fix client intended to send too large body
Posted in Linux Servers on Aug 24, 2018
First you need to edit the /etc/nginx/nginx.conf file by typing the vi command:
$ sudo vi /etc/nginx/nginx.confIn http (server/location) section add the following directive to set the
maximum allowed size in 10MB:
client_max_body_size 10M;Save and close the file.
Test nginx configuration for error
Run the following command:
$ sudo nginx -tSample outputs:
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successfulIf no error means, restart the nginx web server.
$ sudo systemctl reload nginx
OR
$ sudo service nginx re...How to change the location for virtual hosts in Plesk for Windows Server
Posted in Plesk Control Panel on Aug 16, 2018
Connect to a Plesk server via RDP.
Launch Plesk Reconfigurator at Windows Start > All Programs > Plesk.
In Plesk Reconfigurator, select Change Virtual Hosts location.
Specify the new location for virtual hosts and click Next. All existing virtual hosts data will be transferred to the new location as well.
How to change the mailaccount location in Plesk for Windows Server
Posted in Plesk Control Panel on Aug 14, 2018
Connect to a Plesk server via RDP.
Launch Plesk Reconfigurator at Windows Start > All Programs > Plesk.
In Plesk Reconfigurator, select Change Plesk Mail Data location.
Specify the new location for Plesk mail data and click Next. All existing mail data will be transferred to the new location as well.
How to change the location for backup files in Plesk for Windows Server
Posted in Plesk Control Panel on Aug 08, 2018
Connect to the Plesk server via RDP.
Launch Plesk Reconfigurator at Windows Start > All Programs > Plesk.
In Plesk Reconfigurator, select Change Plesk Backup Data location.
Specify the new location for backup files and click Next. All existing backup data will be transferred to the new location as well. During this operation Plesk will be stopped.
