setfacl: Option -m: Invalid argument near character 3
When you work with lots of server and setting permission with setfacl command, you may encounter with this error – “setfacl: Option -m: Invalid argument near character 3”.
Install OpenXenManager on Ubuntu 14.04 LTS
Learn how to install OpenXenManager on Ubuntu 14.04 LTS Desktop. After finishing the installation of XenServer, you may be searching how to install xencenter on linux. To connect to XenServer from client machine, we need XenCenter client. Till writing of this post, Citrix team has not introduced XenCenter for linux. Thanks to Open Source world, we have OpenXenManager – the alternate of XenCenter for Linux.
Upgrade firefox on Ubuntu 14.04 LTS Desktop
In this post, we will explain how to install – upgrade firefox on Ubuntu Desktop. After installation of Ubuntu 14.04 LTS in our laptop, we upgraded the firefox to version 29. Now at the time of writing this post, firefox stable verion 43 is available.
WordPress error “Unable to create new image”
After uploading the image, we tried to crop the image but we found this wordpress error “Unable to create new image”.
sdcard not mounted Ubuntu 14.04 LTS Desktop
Learn how to solve the problem of SDCard not mounting to Ubuntu system.
vi / vim : Remove space at beginning and end of each lines
In this article, we will learn in vi / vim editor how can we remove all the spaces at the beginning or end of the file. Recently, we have encountered the problem where contents where copied from one file to another file with new file extension. There we found too many uneven spaces in each line at beginning and end.
Nagios monitoring on AWS Autoscaling group instances
Setting Nagios monitoring alerts on instances behind the AWS Elastic Load Balancer (ELB) is always tricky part. In this post, we will learn how we can monitor the instances which are created by autoscaling policy and running behind the ELB. We expect our reader do have good knowledge on scripting, nagios and AWS comptuting. This…
Postfix + SES : SASL authentication failed
After configuring AWS SES service with Postfix, you may have found error in logs – SASL authentication failed . The error will not allow you to send email from server by using AWS SES service.
Send nagios report as pdf file email
The tutorial will give an idea, how you can send Nagios Report as pdf file via email. We will achieve this requirement, with the help of script and using wkhtmltopdf command line tool
Convert website page to pdf and image
To convert website page to pdf and image is very useful for various reasons. This kind of requirement you may have seen while making any report and we need to convert website page to pdf or image. Recently, we got requirement to create website page to pdf for some report. Actually the report was displaying…
Python headers are required to build Mercurial but weren’t found
Python headers are required to build Mercurial but weren’t found
2 Methods to Install Ansible on Ubuntu, CentOS and RHEL
Learn what is Ansible and its features. How to install Ansible on Ubuntu. Red Hat and CentOS in various versions. The Article will help you to provide basic understanding on Ansible and help you to get started.
Set postgres password on PostgreSQL 9.4
Learn how to set password on Potgresql database server.
Install postgresql 9.4 on Ubuntu 14.04 LTS server
Learn how to install postgresql 9.4 on Ubuntu server
Install webmin on Ubuntu 14.04 LTS Server
Webmin which is a web based system administration tool for unix based servers . The post will guide you to install latest webmin on Ubuntu 14.04 LTS Server. The webmin has list of modules to manage the unix / linux servers. One of the well known module is Virtualmin which will talk later on our…