Reset Zimbra Admin Password

Obtain a list of all Administrators

If want to get a list of all administrators, run the next command:

su - zimbra
zmprov gaaa

To reset the administrative password:

su - zimbra
zmprov sp <admin email address> <new password>

Check the new password in the Admin Console

To access the admin console:

https://YOURHOST:7071

Remember that the administrative console (sometimes) requires a full email address as the login name, so you may be using the correct password and the wrong login!

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Add Geolocation to Graylog 2

The Graylog Map Widget is the plugin providing geolocation capabilities to Graylog. The plugin is compatible with Graylog 2.0.0 and higher, and it is installed by default, although some configuration is still required on your side. This section explains how to configure the plugin in detail.

In case you need to reinstall the plugin for some reason, you can find it inside the Graylog tarball in our downloads page. Follow the instructions in Installing and loading plugins to install it.

Configure the database

In first place, you need to download a geolocation database. We currently support MaxMind City databases in the MaxMind DB format, as the GeoIP2 City Database or GeoLite2 City Database that MaxMind provides.

The next step is to store the geolocation database in all servers running Graylog. As an example, if you were using the Graylog OVA, you could save the database in the /var/opt/graylog/data folder, along with other data used by Graylog. Make sure you grant the right permissions so the user running Graylog can read the file. Continue reading “Add Geolocation to Graylog 2” »

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Installation Bashtop an upgraded CLI system reporting interface from Top or Htop

Install Bashtop Resource Monitor on Ubuntu

You can use PPA repository for Ubuntu Linux installations:

sudo add-apt-repository ppa:bashtop-monitor/bashtop
sudo apt update
sudo apt install bashtop

Install Bashtop Resource Monitor on Debian

For Debian and its based distributions, used the commands below: Continue reading “Installation Bashtop an upgraded CLI system reporting interface from Top or Htop” »

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Install Discourse Forum with Nginx on Ubuntu 16.04

Step 1 – Install Docker on Ubuntu 16.04

The Discourse software is written in Ruby and Javascript, using PostgreSQL as the main database, and Redis as a cache and for transient data. We will install Discourse under the Docker container.
 
The installation process will be carried out on Ubuntu 16.04. So to begin with, install Docker using the command below.

wget -qO- https://get.docker.com/ | sh

 

After the installation is complete, check the docker service and make sure it’s already running on the system. Continue reading “Install Discourse Forum with Nginx on Ubuntu 16.04” »

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Extend/Reduce LVM’s (Logical Volume Management) in Linux

My Server Setup – Requirements

  1. Operating System – CentOS 6.5 with LVM Installation
  2. Server IP – 192.168.0.200

How to Extend Volume Group and Reduce Logical Volume

Logical Volume Extending

Currently, we have One PV, VG and 2 LV. Let’s list them one by one using following commands.

# pvs
# vgs
# lvs

Logical Volume Extending

Logical Volume Extending

Continue reading “Extend/Reduce LVM’s (Logical Volume Management) in Linux” »

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Endian Installation USB Flash Drive

This lesson describes how to create an installation USB drive for image files provided by Endian and to verify the integrity of the image file. The procedure applies to Windows users with XP, Vista, or Windows7 systems.

Requirements

You need the following to complete this lesson:

  • .iso or .img image of an Endian Appliance.
  • md5sum of the image.
  • An USB Stick.

Warning
Some USB sticks may not work with Endian devices. In particular, some Endian hardware device might fail to recognise USB Sticks with size bigger the 2Gb. so you should try with one USB stick with smaller size.

Note: ISO image files
Starting with release 5.0, Endian releases installation images as .iso file, rather than .img. However, the following procedure and suggested software can be used also with .iso files.

It is assumed that you have an Endian image file and its correspondent md5sum checksum on your computer. This lesson takes as example an image of an edge 3.0 and its correspondent md5sum file saved in C:\:

In order to create the Endian installation USB flash drive you need to download an application that allows to burn img and iso images to USB flash drives disks, like win32 Disk Imager. Continue reading “Endian Installation USB Flash Drive” »

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Zimbra GUI Customization- Logo, Title, Footer

To change logo (On Zimbra 8.6 and onwards)

zmprov md mail.dscsc.mil.bd zimbraSkinLogoLoginBanner https://yourdomain.com/zimbra/MyLoginBanner.png
zmprov md mail.dscsc.mil.bd zimbraSkinLogoAppBanner https://yourdomain.com/zimbra/MyAppBanner.png

To change logo height:

changed hhe contents of file /opt/zimbra/jetty/webapps/zimbra/skins/_base/base3/skin.properties

...
90 LoginH1 = margin:0 0 30px 30px;
91 LoginAppName = display:none;
92 LoginLabelColor = @TxtC@
93 LoginButton = @ButtonShadowDefault@ border:1px solid @ButtonBorderColor@;
94 LoginBannerImg = @LogoImgDir@/LoginBanner.png?v=@jsVersion@

//95 LoginBanner = @img(, LoginBannerImg, 450px, 36px)@ //old
95 LoginBanner = @img(, LoginBannerImg, 450px, 90px)@ //new

96 LoginFooterColor = color:@darken(AppC,55)@;
97 LoginErrorPanel = background-color:#FF9; padding:5px; @roundCorners(8px)@
...

Apply it-

zmmailboxdctl restart
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