Auto installation of Zenoss on CentOS 6 Rumi, June 19, 2016 The simplest way to install Zenoss Core 4.2 on a newly-deployed RHEL/CentOS 64-bit 5/6 system is to use our auto-deploy script, which downloads all required files for you. To use the script, first set up a new server running one of our supported operating systems. Then, as root, run the… Continue Reading
Very Generic Linux Service Watchdog script Rumi, June 16, 2016 A strong watchdog script- indeed! #!/bin/bash # # watchdog # # Run as a cron job to keep an eye on what_to_monitor which should always # be running. Restart what_to_monitor and send notification as needed. # # This needs to be run as root or a user that can start… Continue Reading
User Management in Proxmox Rumi, June 16, 2016 Proxmox VE authentication server This is a unix like password store (/etc/pve/priv/shadow.cfg). Password are encrypted using the SHA-256 hash method. Users are allowed to change passwords. Terms and Definitions Users A Proxmox VE user name consists of 2 parts: <userid>@<realm>. The login screen on the GUI shows them a separate… Continue Reading
413 Request Entity Too Large Rumi, June 9, 2016 If you’re getting 413 Request Entity Too Large errors trying to upload with nginx.net/, you need to increase the size limit in nginx.conf . Add ‘client_max_body_size xxM’ inside the server section, where xx is the size (in megabytes) that you want to allow. http { include mime.types; default_type application/octet-stream; sendfile… Continue Reading
Understanding NAT, Direct Routing & Tunneling Rumi, May 3, 2016 Virtual Server via NAT The advantage of the virtual server via NAT is that real servers can run any operating system that supports TCP/IP protocol, real servers can use private Internet addresses, and only an IP address is needed for the load balancer. The disadvantage is that the scalability of… Continue Reading
ওমরাহর নিয়ম Rumi, April 30, 2016 ১. ওমরাহর ইহরাম (ফরজ) · পরিষ্কার-পরিচ্ছন্নতা সেরে গোসল বা অজু করে নিতে হবে · মিকাত অতিক্রমের আগেই সেলাইবিহীন একটি সাদা কাপড় পরিধান করুন, অন্যটি গায়ে জড়িয়ে নিয়ে ইহরামের নিয়তে দুই রাকাত নামাজ পড়ে নিন · শুধু ওমরাহর নিয়ত করে এক বা তিনবার তালবিয়া পড়ে নিন Continue Reading
Testing Freeradius of Pfsense Rumi, April 4, 2016April 4, 2016 FreeRADIUS offers an easy to use command line tool to check if the server is running and listening to incoming requests. Aninterface, a NAS/Client and a user must all be configured: Add a User with the following configuration:Username: testuser Password: testpassword Add a Client/NAS with the following configuration:IP-Address: 127.0.0.1 Shared… Continue Reading
Converting laptop into a wifi router Rumi, March 26, 2016 Well, first assuming, that the laptop has 2 NIC- one with an ethernet port for wired and the other- of course the Wifi ethernet (without this presume this content won’t exist otherwise 😉 ) Now, the next thing- either you get internet from the wired port or to be in… Continue Reading
Business Server- How should it be Rumi, March 25, 2016 So, what would be a business on premise server look like…? Tried to build a feature based composition, but I guess need more upgradations- Server operating system- Ubuntu 12.04 LTS Network Firewall- ufw * DNS server- Dnsmasq DHCP server- ISC DHCP Internet sharing with proxy and cache control, including reporting and user access control- Squid | Sarg Anti-Virus and Anti-Spam ClamAV | AMaViS | SpamAssassin Groupware Email, Contacts, Calendar, Webmail, with native Microsoft Outlook compatibility and mobile device support- SOGo * Instant Messaging, VOIP… Continue Reading
Understanding RAID Rumi, March 25, 2016 I always try to share what I learn, and a few days back was looking for a single page short cut summary notes on various RAID level for the storage units. Found this article quite resourceful and exactly a single paged document that I was looking for. Now sharing the… Continue Reading