SURENDER SINGH BISHT

Technical Responsibilities:

• Managed integration of new technologies, enhancing system capabilities and user experience.
• Developed Bash scripts for MySQL backup automation, disk space cleanup, and log rotation.
• Designed and implemented custom Zabbix monitoring solutions for HAProxy, OpenSIPS, ProxySQL, and vReg services.
• Created custom Zabbix templates, items, triggers, dashboards, and health checks for proactive monitoring and alerting.
• Worked on alert optimization by reducing false positives and improving actionable alerts for operations teams.
• Integrated monitoring and alerting with PagerDuty, Grafana, and Prometheus for centralized observability.
• Administered Linux-based Proxmox VE clusters including VM lifecycle management and migrations.
• Configured and optimized ZFS with snapshots and replication.
• Performed MySQL troubleshooting, replication tuning, and disk usage reporting.
• Automated admin and monitoring tasks using Bash, Python, and Ansible (backups, configs, rollouts, monitoring onboarding).
• Installed OS via PXE boot automation (PXE + TFTP + DHCP + Kickstart).
• Managed FreeIPA integration for centralized authentication across PVE clusters.
• Monitored infrastructure using Zabbix, PagerDuty, Prometheus, and Grafana.
• Diagnosed service issues (Apache, HAProxy, PHP-FPM, OpenSIPS) and coordinated with Dev teams.
• Managed AWS services (EC2, EBS, S3, IAM, Route 53, CloudWatch, CloudTrail, NACLs, NAT, and SGs).
• Migrated VMs between clusters and maintained GitHub repo for scripts & playbooks.
• Used Kubernetes (testing/staging) and Jenkins CI/CD pipelines for deployments.

• Implemented and managed a large-scale Zimbra multi-server mail infrastructure comprising 500+ Linux servers for National Informatics Centre.
• Successfully migrated 2 million users from legacy systems to Zimbra with zero data loss and minimal disruption.
• Developed multiple shell scripts to automate critical Zimbra administration tasks including mailbox backups, quota tracking, inactive user handling, and operational maintenance.
• Designed and integrated service and performance monitoring into Nagios for real-time alerting and proactive incident management.
• Configured and administered Nagios Core and Nagios Enterprise monitoring solutions for enterprise-wide infrastructure visibility.
• Automated Nagios client deployment and monitoring configuration using Ansible playbooks across large-scale Linux environments.
• Reduced monitoring noise by tuning thresholds, improving alert accuracy, and creating actionable alerts for operations teams.
• Installed, configured, and managed Zimbra mail servers and Linux-based virtual machines on VMware infrastructure.
• Deployed centralized logging infrastructure using ELK Stack (Elasticsearch, Logstash, Kibana) and developed custom Grok patterns for log analysis and troubleshooting.
• Developed Bash automation scripts for log rotation, patching, backups, service validation, and user provisioning.
• Performed regular Zimbra upgrades, Linux kernel updates, SSL certificate renewals, and security patching activities.
• Implemented and managed LVM storage, static IP configurations, and Linux OS hardening across production servers.
• Created, cloned, and managed VM templates and snapshots for deployment consistency and rapid provisioning.
• Conducted RCA and preventive maintenance for recurring infrastructure and application issues.
• Provided production support for Zimbra, Linux, VMware, and monitoring-related incidents.
• Delivered continuous improvements in uptime, reliability, monitoring visibility, and operational efficiency for mission-critical government infrastructure.

Impact: Delivered a highly available, scalable, secure, and proactively monitored enterprise mail infrastructure enabling reliable communication for millions of users under NIC.

Installed and maintained Linux servers (RHEL/CentOS 7.x), configured centralised YUM repositories, and implemented server hardening practices.

Performed LVM operations: disk expansion, striped and mirrored volume creation.

Installed, configured, and maintained file sharing services using NFS and Samba; resolved issues across branch office locations.

Managed user accounts and access control across Linux, Windows, and enterprise applications.

Analyzed system and application logs to identify and troubleshoot OS, service, and performance issues.

Deployed and managed networking configurations including static IPs, FTP, SSH, routing tables, and firewall rules.

Installed and supported Linux distributions including RHEL, CentOS, Ubuntu, and Fedora.

Developed and maintained shell scripts for tasks such as log rotation, backups, and automatic cleanup.

Installed and maintained infrastructure components including Postfix, Dovecot, Zimbra, Samba, Nagios, and FTP servers.

Worked extensively on AWS Cloud platform: provisioned and managed EC2 instances, EBS volumes, AMIs, RDS, S3, VPCs, and CloudWatch.

Scheduled automated backups using custom scripts to enhance data protection across servers.

Conducted performance tuning, patch deployment, and system security updates using RPM and YUM.

Provided end-to-end Linux system administration and supported enterprise-wide infrastructure operations.

Installation, configuration, and administration of Linux (RHEL, CentOS, Ubuntu, Window) 6 & 7 on servers.

Maintained backup servers, computers, printers, and performed installation of system software.

Troubleshot issues with Windows (2003/7/8/XP) and Linux OS; resolved end-user support tickets.

Monitored server health: logs, disk management, backup validation, service checks.

Managed file and folder permissions, user and group administration.

Performed system health checks and performance monitoring.

Installed, configured, and maintained LVM and RAID.

Configured Telnet, SSH, RSYNC, SCP, and installed Apache and NGINX web servers.

Used RPM and YUM for package management and deployment.

Controlled internet access using Sony firewall.

Installation, configuration, and administration of Linux (RHEL, CentOS, Fedora, Ubuntu, Kali, Window 7, 8.1 and Server 2003) 6 & 7 on servers.Maintained backup servers, computers, printers, and performed installation of system software. Troubleshot issues with Windows (2003/7/8/XP) and Linux OS; resolved end-user support tickets.

Monitored server health: logs, disk management, backup validation, service checks.

Managed file and folder permissions, user and group administration. Performed system health checks and performance monitoring.

Installed, configured, and maintained LVM and RAID.

Configured Telnet, SSH, RSYNC, SCP, and installed Apache and NGINX web servers.

Used RPM and YUM for package management and deployment.

Controlled internet access using Sony firewall.

Ensured smooth IT operations across 400+ branches in India including email systems.

Configured email clients such as Netscape Navigator, Thunderbird, Outlook Express, Outlook, and Evolution.

Configured client-server backups using rsync to mirror data securely to asset servers and Stellar Phoenix Windows Data Recovery.

Used Samba server to share folders with clients and configured Canon IR2425 A3 Monochrome Laser Multifunctional and HP printers on both Windows and Linux servers for print and scan functionality over the network.