CentOS 7, Linux

How to install Webmin on CentOS 7

Nenhum comentário

Webmin is a web-based graphical tool for unix . It is used to manage services like User management, Disk managemet, Network, Iptables (Firewall), Cron, Apache, DNS, File sharing and much more .
In this article i will show you how to install webmin on CentOS 7 linux.

 

Install Webmin on CentOS 7

To get started, login your remote server and follow the steps below:
First, create a new file webmin.repo in /etc/yum.repos.d/ :

vi /etc/yum.repos.d/webmin.repo

and paste below line:

[Webmin]
name=Webmin Distribution Neutral
#baseurl=http://download.webmin.com/download/yum
mirrorlist=http://download.webmin.com/download/yum/mirrorlist
enabled=1

Install webmin GPG key using below command.

rpm --import http://www.webmin.com/jcameron-key.asc

Now, update the repositorys:

yum check-update

Install webmin:

yum install webmin -y

Start the service and make it start automatically

chkconfig webmin on
service webmin start

By default, Webmin will listen on port 10000. Enable webmin Port:

firewall-cmd --add-port=10000/tcp

Now, open http://ip.add.re.ss:10000 in your browser and enter yor root username and password:

1

2

That is all!

Continue Reading

CentOS 7, Linux, RedHat 7

How to Install iRedMail on CentOS 7 & RHEL 7

25 Comentários

iRedMail is out of the box open source mail server solution on Linux like operating system. The beauty of iRedMail is that it provides web based admin panel from where mail admin or system admins can do all email related operations task. Some of other features are listed below :

Support unlimited email accounts.
It provides Roundcube as webmail (MUA )
It used Postfix as MTA & Dovecot as MDA
It pvoides Calendar service via CalDAV & Contact service via CardDAV
It uses SpamAssassin for Spam scan and Amavis & Clamav for Mail virus scan.
OpenLDAP, MariaDB and PostgreSQL can be used to save mail accounts

In this article we will demonstrate how to install and configure iRedMail on CentOS 7 & RHEL 7. I am going to use followings for iRedMail setup.

OS = CentOS 7 or RHEL 7
Domain = nsitmail.com
Server Hostname = mail.nsitmail.com

Note : In case if you want mails from your mail server to be delivered in inbox not in spam folder then update the DNS records like A & PTR  before installation and TXT ( SPF & DKIM ) after installation.

Step:1 Set hostname and disable Selinux.

Set the proper hostname using hostnamectl command if it is not set.

[root@mail ~]# hostnamectl set-hostname mail.nsitmail.com
[root@mail ~]# hostname -f
mail.nsitmail.com
[root@mail ~]#

Update the /etc/hosts file

127.0.0.1 mail.nsitmail.com localhost.localdomain localhost

Disable Selinux

[root@mail ~]# setenforce 0

Edit the file /etc/sysconfig/selinux , set the parameter “SELINUX=disabled” , Reboot the server to disable selinux completely.
Step:2 Download the tar file of iRedmail.

Download the latest version of iRedmail from their Official Web Site or use below wget command to download from terminal.

[root@mail ~]# wget https://bitbucket.org/zhb/iredmail/downloads/iRedMail-0.9.3.tar.bz2

Step:3 Extract the tar file & execute installation Script.

[root@mail ~]# ll
total 124
-rw-r--r-- 1 root root 126277 Dec 20 19:12 iRedMail-0.9.3.tar.bz2
[root@mail ~]#
[root@mail ~]# tar -jxvf iRedMail-0.9.3.tar.bz2
[root@mail ~]# cd iRedMail-0.9.3
[root@mail iRedMail-0.9.3]# sh iRedMail.sh

After couple of seconds , below screen will appear , Select yes and press enter.

1

Define the folder or directory where users mailbox will be stored.

2

Select the web Server for iRedmail. Default is Nginx.

3

Select the database of your choice which will store domain names and mail accounts. In my case i am using MariaDB.

4

Define the domain name for your mail server. In my case domain name is “nsitmail.com”

5

Set Password for postmaster account.

6

Select Optional Components of iRedmail installation8

Press “y” to continue installation, Mail Server info & Credentials are kept in the file “/root/iRedMail-0.9.3/config”. Please keep this file in secure place.

9

10

As per instructions , reboot the server to enable all mail services.

Postfix mail logs and iRedmail logs are stored in “/var/log/maillog” and “/var/log/iredapd/iredapd.log” respectively.

Note : Default administrator name is “postmaster@nsitmail.com”

Following are the Important URLs after the Installation is completed , replace the domain name as per your setup in mentioned URLs.

iRedAdmin – official web-based admin panel:

https://mail.nsitmail.com/iredadmin/

Username: postmaster@nsitmail.com, password: XXXXXXXXXX

Roundcube webmail URL :

http://mail.nsitmail.com/mail/

SOGo Groupware

https://mail.nsitmail.com/SOGo/

Step:4 Create Users & domain from Admin Panel.

To create users first login to admin panel. Use user name as “postmaster@<domain>” and password that we set during installation.

1-11-2

Click on Add option and then Select Users.

1-3

Add a new Domain :

From the admin Panel , Select “Domain & accounts” option and then click on Add domain

1-4

Define the domain name & Organization Name and then further we can create users on newly created domain.

1-5

Step:5 Access Roundcube (Webmail).

Open the url in the browser “https://mail.nsitmail.com/mail/” , replace the domain name as per your setup.

1-6

1-7

Send a test mail to verify the functionality.

1-8

As we see that i got the mail from iRedmail mail server, so we can say the iRedmail is successfully installed and configured.

Continue Reading

CentOS 7, Linux

Configure CUPS Printing Server on CentOS

21 Comentários

Configure CUPS Printing on CentOS

when you need to setup a CentOS Linux print server, CUPS (Common UNIX Printing System)to the rescue!

login to your server, and su to root.

1- Install CUPS

yum install cups

2- Install dependency

yum install ghostscript.x86_64 hplip-common.x86_64

3-start the cups service, and then set to to run on startup

service cups start
chkconfig cups on

to best administer CUPS we need to configure the web GUI

vim /etc/cups/cupsd.conf

add the following line to the top (this allows easy administration)

DefaultEncryption Never

safelist your network to allow access

download

–obviously you want to enter the IP of the server here, rather than what i have,

now allow your local subnet to have access to the web GUI

download (1)

that’s just for the web access, but for the ADMIN pages, you may want to lock it down further:

download (2)

save + quit after all configured

also make sure to allow the port through IPtables (if enabled)

restart the cups service once completed

download (4)

browse to https://serverip:631

download (5)

That is all

Continue Reading

CentOS 7, Linux

HOW TO INSTALL VESTA CP

Nenhum comentário

Step 1 – First, login to your server’s shell via SSH as root, as always, for this task I use putty.

2013-12-23_154432

Step 2 – Next, download VestaCP installation script using curl command:

curl -O http://vestacp.com/pub/vst-install.sh

download-vestacp-620x195

Step 3 – Next, issue this magic command to start installing VestaCP:

bash vst-install.sh

4

Step 4 – The installer asks to confirm disabling SELinux and start the install process. Type Y and hit Enter.
Step 5 – The installer also asks to enter valid email address. So type your valid email address and double-check it to make sure your email is correct because VestaCP will also send your admin password there.

5

Step 6 – Once you hit Enter on your keyboard, the installer starts. Sit tight and wait for the installerto process and finish its job.
Step 7 – As long as you found no fatal error, the installer should finish quicker and you will see something like this on your screen:

7

You can also check your mailbox just to ensure the password is delivered and mail server (Exim) works properly on your server.

8

Step 8 – Now open up your favorite browser and login to VestaCP web-based UI using your VPS IP at port 8083.

https://xxx.xxx.xxx.xxx:2083/
Login as admin and use given password,
As you may also aware that the link is https:// which means via secure connection (SSL) so you may have to add / confirm exception on your browser.

vestacp-login

Voila! You should now see the main UI of Vesta hosting control panel.

vestacp-main-ui-620x242*click on image to view larger size.
Congratulation! You now have Vesta CP installed and a ready-to-use VPS to host all your websites.

Continue Reading

CentOS 7, Linux

How to install MailServer Zimbra on Centos 7

Nenhum comentário

Disabled SELINUX

# vim /etc/sysconfig/selinux

Change enforcing to disabled :

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected.
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

Stop any MTA services installed in the server

# systemctl stop postfix
# systemctl disable postfix
# systemctl stop sendmail
# systemctl disable sendmail

Update the OS

# yum update -y

Install the required packages and libraries by issuing the following command :

#yum install perl perl-core ntpl nmap sudo libidn gmp libaio libstdc++ unzip sysstat sqlite -y

Extract the downloaded tar file :

Using the following command you can extract the tar file, We downloaded in previous step

wget https://files.zimbra.com/downloads/8.6.0_GA/zcs-8.6.0_GA_1153.RHEL7_64.20141215151110.tgz
tar xzf zcs-8.6.0_GA_1153.RHEL7_64.20141215151110.tgz

Go to extracted ZCS Open Source Edition :

cd zcs-8.6.0_GA_1153.RHEL7_64.20141215151110

Instal Zimbra.

./install.sh
Continue Reading