• Involved in design, configuration, installation, implementation, management, maintain and support for the corporate Linux servers RHEL 3, 4, 5, CENTOS 5, Ubuntu.
• Assisted in upgrading RHEL 5.0 to RHEL 5.5 using live upgrade and manual upgrade.
• Installation of patches and packages using RPM and YUM in Red hat Linux.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Installation, configuration, support and security implementation on following services
• HTTPD: Apache web server maintenance, installation, configuration, managing web hosting including name based, secure and private site, monitoring web server performance, certificate generate, security checks and periodic upgrades, manage user accounts, back up.
• Good understanding on OSI model, TCP/IP protocol suite (IP, TCP, FTP, SMTP, UDP, SNMP).
• Managed Network troubleshooting applications TCP/IP including Ethernet, IP addressing & Sub netting, routing.
• Troubleshooting and monitoring the machines 24x7.
• Experienced in scripting for automation and monitoring using Shell and Python scripts.
• Experience in administering, installation, configuration, support and maintenance of Linux
• Responsible for writing/modifying scripts using bash, SSH for day-to-day administration.
• Modified Kernel parameters to improve the server performance in Linux.
• Creation of Logical volumes (LVM) for Linux operating systems.
• Supporting Application Team, Storage Team, DBA Team at OS system level.
• Performed troubleshooting of DNS, DHCP and Active directory.
• Using tools like WinSCP, FTP, FileZilla for transferring files from virtual machines to servers.
• Worked on implementing SSL and Root Certs to all the trust stores of applications.
• Worked on configuring web servers like Apache Tomcat, Nginx, and JBoss.
• Expertise in different environments like SUN SOLARIS, Linux and Windows
• Environment: Bash, Shell scripts, RedHat, Putty, Apache Tomcat, Apache webserver, Nginx.