In this tutorial we will learn How to install and configure nagios nrpe in CentOS and Red Hat. We will also do some configuration changes in nagios server so that we could monitor the servers. In this scenario we will add a server to monitor. Operating System : CentOS 6.3Nagios Server : hostname: nagios-server ,…
In this article we will solve the problem “”CHECK_NRPE: Error – Could not complete SSL handshake nagios””
Whenever we newly setup the nagios server we mostly get this error “Nagios HTTP WARNING: HTTP/1.1 403 Forbidden”. In this article we will solve this problem.
Error installing rails Today I was installing the ruby and rails in my system and found two times this error.Hence I decided to post the how to install method of ruby and rails in CentOS 6.3 . The CentOS 6.3 was minimal installed. Follow the given below steps Step 1: Install the gcc,gcc compiler and…
Installing rails in verbose mode CentOS and Red Hat When we do “gem install rails” , the command actaully take time to install rails and we can not see what are the liberaries are installing in background. To see the rails installation in verberose mode ,use the given below command : gem install rails -V…
Installing Nagios-3.4.4 in CentOS 6.3 This post is updated version of post “Installing Nagios-3.4 in CentOS 6.3”. The only difference here is , we will use the new EPEL repo rpm i.e epel-release-6-8.noarch.rpm. Rest of the steps are same Download the EPEL repo in your system yum install wget (use this command if you do…
How to set htdigest password in apache web server Through this method we can set the username and password in webserver means whenever anyone open the website he has to give username and password to see the content of website. To know about what is the difference in htdigest and htpasswd. Kindly visit these links….
How to install and configure samba server in CentOS 6.3 Introduction: Samba is a free software re-implementation of the SMB/CIFS networking protocol, originally developed by Andrew Tridgell. As of version 3, Samba provides file and print services for various Microsoft Windows clients and can integrate with a Windows Server domain, either as a Primary Domain…
How to configure FTP server in CentOS 6.3 – vsftpd server vsftpd, which stands for “Very Secure FTP Daemon”,vsftp is an FTP server for Unix-like systems, including Linux. It is licensed under the GNU General Public License. It supports IPv6 and SSL. vsftpd supports explicit (since 2.0.0) and implicit (since 2.1.0) FTPS. vsftpd is the…
In this post we will learn how to encode and decode the strings with base64. We will also see some example on this as well. Introduction Base64 is a group of similar encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. The Base64 term originates from…
How To Add duckduckgo Search engine in WordPress Blog or website Adding the duckduckgo search engine is very simple process. (1) Visit this link https://duckduckgo.com/search_box (2) Fill up the fields as per your requirement. (3) Copy the code and just paste it into text widget of wordpress . After this place the text widget in…
You may have encounter with mail command not found in Red hat, CentOS, Rocky Linux, Ubuntu, Debian .Whenever any message says while hitting the command as Command Not Found , it means the package is not installed or script is not present. We use mail command to send the email from the terminal. It is…
After doing minimal installation of CentOS 6.3 server ,we were not able to do scp from my client machine to CentOS server.It was simply showing the error – “scp command not found”. This thing has happened earlier when we have used the CentOS 6. When it was occur last time with us in CentOS 6.0…
How to change hostname or FQDN in CentOS and Redhat In this tutorial we will learn about,how to change Hostname or FQDN in CentOS and Red Hat. The method is applicable to all Red Hat based operating system. I have described about difference between hostname and FQDN which you can read from this post (The…
Mostly I use firefox and few days back I was working on RSS feed burner of my this Blog. I tested this blog in Google Chrome and surprised to see an Errr: “This XML file does not appear to have any style information associated with it” I checked my XML file and it looks fine….