HAproxy error while starting in a docker image. root@757660aceb1e:/# service haproxy restart  * Restarting haproxy haproxy        ...

Cannot install packages inside docker Ubuntu image ? E: Unable to locate package Solution : docker exec -ti solr-zk apt-get -qq upda...

Install docker on Ubuntu Login to your server and update the software repository. root@dockerserver# apt-get update Install dock...

How to upgrade SOLR 4.10.4 to SOLR 6.1.0? Download solr-5.0.0 and start it. From the GUI  create all collections copy index data fr...

Manage you elasticsearch Cluster through KOPF 1. install KOPF. The kopf plugin provides a GUI for Elasticsearch. You can find out t...

While configuring the clients for the nagios monitor, we get these errors. This error means the nrpe daemon is communication with nagios se...

 Midnight Commander  Midnight Commander is a visual file manager, licensed under GNU General Public License. This text mode application t...

How to Set targets in RHEL/CentOS 7? Previous versions of RHEL, which were distributed with SysV init , implemented a predefined set o...

How to Install GNOME Desktop On RHEL/CentOS 7? 1. Configure the Repository or register to subscription-manager. 2. Install the GNO...