Linux System Administration:
• Linux server setup (installation & configuration) RHEL and CentOS version
5.x, 6.x and 7.x
• User & Group administration, Controlling Access to files with ACLs.
• Created logical volumes and increased the file system in Linux servers
(LVM).
• Performed troubleshooting and diagnostics on enterprise infrastructures that include
MySQL replication, NFS, LVM, etc.
• Research, stage and implement new patches, rollouts and upgrades for various application
and hardware to maximize integrity and efficiency of the system.
• Prior experience in setting up MySQL/MariaDB server (installation & configuration).
• Prior experience in setting up Apache Web server (installation & configuration).
• High availability of websites and web-application through load balancer
HAProxy.
• Prior experience in setting up cluster (Linux & DRBD) which includes
components like Coro sync, pacemaker & heartbeat.
• Experience in resolving Incidents as per ITIL Incident Management process.
• Executing Changes as per ITIL Change Management process.
Infrastructure & Application Monitoring:
• Prior experience implementing an enterprise class monitoring platform (Nagios, NagiosXI,
Zabbix, Prometheus)
• Enterprise experience in a system monitoring capacity.
• Configured SNMP / MIB’s / SNMP Traps.
• Implemented Linux/Unix, Windows hosts monitoring using NRPE and NCPA agent.
• Network devices monitoring through SNMP v2 and v3.
• Unix Shell Scripting and automation
• NagiosXI backup configuration through SSH, FTP and local.
• Knowledge of various reports (Availability, SLA, Bandwidth Usage etc) available in
NagiosXI, Bulk Host Cloning and Import.
• Multi tenancy for user for categorizing Host/Device.
• Prior experience implementing NagiosFusion for getting centralise view of Nagios Core and
Nagios XI servers.
• In Zabbix, periodically scans network and discovers device type, IP, status,
uptime/downtime, etc, and takes predefined actions. Automatically creates items, triggers,
and graphs for different elements on a device.
• Automatically starts monitoring new equipment with Zabbix agent.
• Strong encryption between all Zabbix components.
• Prior experience in setting up Prometheus & Grafana for Application monitoring and time
series analysis of data.
• Event monitoring and alerting through Prometheus.
• Verified logs on servers which are running Apache, MySQL, Tomcat, Nginx etc., using
Nagios XI and log analysis via ELK stack.
DevOps:
• Prior experience implementing GIT for tracking changes in web files, scripts, Nagios plugins
etc.
• Implemented & maintained the branching and build/release strategies utilizing GIT
• Prior experience implementing patches, application upgrade as well as plugins deployments
on Linux servers through Ansible Playbooks.
• Knowledge of Ansible AdHoc commands, modules & playbooks.
• Managed project builds and releases using CI/CD tools like Jenkins, Git/Git Hub, Ansible
and deployed projects on various non-prod and prod environments.