IT Systems Administrator

• Manage over all 500+ Linux/windows 2008 based server, windows 7 and 10 based Vms.
• Manage web based applications. Confluence, Trac, Moodle and in house developed custom application running on apache. Squid proxy server with blacklists.
• Manage VMWare and Citrix based virtualization environment.
• Manage backups and tape lib. Test restore backups. Amanda, Symantec Backup Exec and Rancid for device config backup.
• Manage monitoring systems. Opsview and Nagios.
• Manage Splunk log monitoring system, generate alerts and reports.
• Generate SSL certificates. Client ssl certificates and public CA certificates and installation.
• Run security scans, fix vulnerabilities, patch Linux, update Cisco ASA firmware, upgrade all apps. Manage OSSEC file integrity checking. Apache modsecurity. Iptables firewall and SSH key based setup.
• Bind9 DNS and Postfix mail server.
• Manage HP 3PAR iSCSI SAN.
• Manage iLOs and hardware support of HP DL 380 servers, ASA and Juniper firewalls.
• Ansible and bash scripting.
• Samba, SNMP and NTP.

• Manage over all 50 local servers and remote servers and network of all group companies. Including Linux based SVN, Nagios, Cacti, Wiki, Custom Application, Voice Switches and Test Servers etc. And Windows based SharePoint, VPN, Domain, Proxy and File Servers etc.
• Manage and IT team.
• Manage iDRAC and OpenGear console servers and Managed APC PDUs.
• Manage servers in cloud.
• Procurement of IT equipment.
• Manage Vmware ESX servers and replications/backup among ESX Servers.
• Manage 20 domains, email and webhosting.
• Manage monitoring system, LAN and WAN.
• Configure servers’ security and juniper firewalls.
• Define security policies and general SOPs
• Automate system tasks using bash scripting.
• Define backup policies and schedule and monitor backups of servers and schedule jobs etc.

• Manage over all systems and network of all 5 group companies.
• Managing OS related tasks of Oracle Database and Application Servers.
• Managing Zimbra based Mail Servers, OS and Zimbra applications. Migrated Zimbra 5.0.14 32 bit version to 6.0.10 64bit version under VMware ESXi virtulized environment on CENTOS Linux.
• Manage VMware ESXi servers.
• Manage Linux (SUSE and Fedora) based Proxy, and Web servers.
• Manage Openfiler based file servers. And replication between Primary and backup file server through rsync.
• Managed Redhat Linux based bind and dnsmasq based DNS servers.
• Manage EOP Antivirus server.
• Manage Opensuse 11.3 based Nagios and Cacti monitoring systems.
• Automate system tasks using bash scripting.
• Completed Hardware upgradation project of Oracle database and Application server with SAN.
• Take backups of servers and schedule jobs etc.

• Manage z/Linux based server on Z9 Main frame computers in z/VM environment.
• Manage z/VM virtualization.
• Evaluate and give recommendation to standardize their Data Center.
• Provide Linux technical support to clients.
• Configure Tivoli Access and Directory Services.
• Take backup of servers.
• Configure Tape Libraries in Linux.

• Manage over all Data Center operations.
• Make Policies, forms and SPOs for day to day operations and for most common problems (Linux system administration related). To keep Bank’s Data Center up and running in 24x7x365 operation.
• Manage over all monitoring system.
• Wrote Nagios plugins to integrate different devices (ups & A/C controllers) in monitoring system.
• Manage Data Center monitoring and support team. Based on reports take proactive measures to overcome potential future problems and for capacity planning.
• Install, configure, trouble shoot and manage Linux based production servers running various mission critical applications. Like Lotus Domino, WAS, Sametime, Web, DNS, FTP and Monitoring System
• Generate Data Center SLA reports.
• Perform R & D to on new products to continuously improve organization’s infrastructure.
• Install Configure and troubleshoot NAS Servers (Openfiler and Open-E).
• Manage and build IT team.

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