Senior Systems Analyst
Entain
Total years of experience :12 years, 0 Months
Currently managing 10, 000 VMs deployed across Data Centers in different regions as follows Ireland, London and Gibraltar.
Building Servers through ansible playbooks in Vcenter, managing inventories and setting up group/host variables for specific set of h/w requirements while deploying Linux VMs.
Migration of Data Center VMs from Gibraltar region to Ireland region by coordinating with project managers and developing a concrete excel-sheet
Choosing right network ip ranges and network segment from Vcenter uplink ports to map the correct ranges in GestioIP.
Registering and sorting hostnames with IP using registry script followed by collaborating with storage team for required amount of space and compute resource requirement from the excel-sheet.
Created playbook for telegraf agent installation across Linux VMs for specific OS version 6 based deployment, script for deploying and checking VMware tools across Linux VMs.
Providing monthly on-call 24x7 support for Production services like BIDS, NRM, MS-SQL Servers, BI Servers apps running Windows via Citrix application.
Responding to SOC calls during on-calls and messages during non-on-call days for issues reported via icinga channel from Microsoft teams.
Attending daily-standup calls with bi-weekly calls and giving status updates on infrastructure tasks example building of VMs, h/w upgrades, telegraf deployment through ansible and puppet.
LVM expansion based on criticality of business during weekends using ansible playbook to grow volumes, Windows drives expansion based on needs.
Performed VM h/w upgrades across different regions of VMs present in distinct locations of Data Centers.
Configured Dashboard for Grafana, migrated dashboards from obsolete Grafana to new Grafana.
Managing acls of Linux OS through puppet by making changes in hiera DB of puppet and squid proxy url whitelisting through puppethub.
Deploying proxy changes and access controls to systems via puppethub, adding new entries of IP based access and user based sudo access to files using puppethub.
Troubleshooting issue related to CPU, RAM, Disk, network using OS tools as well graphs such Grafana, troubleshooting VMware related issues like CPU latency in readiness via sexigraph and by navigating to VM monitoring based on stats.
User and group administration of users through Domain Administration scripts for Linux platform, resetting and managing different domains like coral, Ladbrokes and icepor on windows for user and group administration for users.
Collaborating with different teams and product stakeholders like Omnia, Jira, Datafabric, business intelligence, DBAs team for disk related issues reported through icinga.
Updated golden templates before deploying servers in different environments like Test and Stage, parallelly performed VM h/w upgrade to the latest version of vmx.
Hot added CPU/RAM as per the business needs by observing performance of VMs over a series of period in Grafana, reduction of CPUs up on observing performance of the application like Redis.
Co-ordinating with network team for opening ports to access servers present in different network segments of the network.
Reported disk related space issues to respective application stakeholders running services like openbet, docker, Kibana, elastic-search and Logstash.
Proactive on issues reported through snow resolved them in timely fashion as per priority set on them.
Be a team player helped new joiners in the team in terms of understanding the concept and work culture.
Created documents in confluence based on new project, service improvements plan and meeting conducted projects implemented.
Creation of new templates, modifying existing templates in Icinga Director for monitoring services of Linux and Windows servers.
Deployment of templates for monitoring of services like telegraf, MUX, datacast present on Windows/Linux platform using Icinga Director.
Currently Securing Enterprise Business Applications across Linux, Windows, VMware, AWS and GCP platforms in hybrid environment.
Performed Vulnerability Assessment using Nessus a Tenable Scanner and remediated issues reported across ILOs, Windows/Linux platforms, acted as a liaison between infosec and IT operations.
Mitigated registry issues by altering for Windows and config changes for Linux Servers based on recommendations from InfoSec, whenever security threats are reported.
Managing and Maintenance of AWS accounts like SBX, DEV, TEST and PROD for Security, Compliance and Cost Optimization based on Trusted Adviser/Cloud Health Reports.
Conducted and Organized meetings with DevOps/Platforms teams for Cost and IT Security audits. Helped higher management in reducing cost and cutting down overall expenses across all AWS accounts.
Regularly followed up with various stakeholders for optimal administration of Access and Secret keys and made sure all the security loopholes reported from Trusted adviser and Hammer are addressed on time.
Converted various types of instances like r3, r4, m3, m4 m5 to most efficiently utilized and burstable performing instances like T series in all AWS accounts and prepared google-spread-sheet reports on detailed analysis and impact.
Changed AWS backups to EBS Life Cycle Manager to reduce cost in all AWS Accounts, configured tags and created policies for differential/incremental and full backups of snapshots with retention span.
Performed incremental backups/Snapshots for specific Linux/Windows instances using AWS CLI in scripts with cron jobs in DEV, TEST and PROD AWS Accounts.
Okta Sync of AD users when new attributes are assigned, for Apps running Oracle implemented across different environment.
Federated Windows instances to Domain and created Users, Groups on Windows instances in AWS with privileged access such as admin, power user to install software like JMeter and Selenium.
Managed AD Users and Groups
Reported to the Technical Delivery Manager, providing remote Technical Support to clients in installing, configuring, troubleshooting and major to minor upgrades of the product Jive.
Participating in mapping of the architecture & application properties, while configuring Jive in clustered environment with various services like Activity Engine, Cache, and Search with Ingress replicator and Document Converter.
Coordinating installation, configuration, troubleshooting and SSL implementations of the Apache software Load Balancer, while performing remote upgrades for non-production environments at client location.
Designing POC, DEV, TEST and STAGING environment for Jive installation in both the Jive Cloud and On-Premises environment at client site as well as set-up Networked File system Servers for binary storages.
Fine tuning application system properties, kernel properties of OS Linux and configuring Java Virtual Machine for Jive application under different setups like development, testing, staging and production.
Conducting review of on-site Apache logs, Thread dump analysis for client servers and garbage collection of Jive Application, Activity Engine & Search Service for recommendations on CPU cores/RAM as well as for giving comprehensive report to the customers.
Engaged in multiple tasks like Installation/Configuration of PostgreSQL Server, configuring Network File System for development nodes of the application, changing permissions of user/group and acquiring Open-SSL certificates for Load balancer.Currently reporting to the Technical Delivery Manager, providing remote Technical Support to clients in installing, configuring, troubleshooting and major to minor upgrades of the product Jive. Participating in mapping of the architecture & application properties, while configuring Jive in clustered environment with various services like Activity Engine, Cache, and Search with Ingress replicator and Document Converter. Coordinating installation, configuration, troubleshooting and SSL implementations of the Apache software Load Balancer, while performing remote upgrades for non-production environments at client location. Designing POC, DEV, TEST and STAGING environment for Jive installation in both the Jive Cloud and On-Premises environment at client site as well as set-up Networked File system Servers for binary storages. Fine tuning application system properties, kernel properties of OS Linux and configuring Java Virtual Machine for Jive application under different setups like development, testing, staging and production. Conducting review of on-site Apache logs, Thread dump analysis for client servers and garbage collection of Jive Application, Activity Engine & Search Service for recommendations on CPU cores/RAM as well as for giving comprehensive report to the customers. Engaged in multiple tasks like Installation/Configuration of PostgreSQL Server, configuring Network File System for development nodes of the application, changing permissions of user/group and acquiring Open-SSL certificates for Load balancer.
Skills: Virtualization · Network Security · Troubleshooting · Incident Management · Infrastructure · Cloud Computing
Reported to the Cloud Operations Manager for participating in migration of on-premise VMs and physical Servers and Apps to AWS platform which includes applications present on IBM AIX.
Performed monthly patching on Linux/Windows platforms to meet the compliance and fixed security issues reported by Risk Team.
AWS Users creation, installation of Load balancers, VPC, Subnets, creating AWS VPC in different regions, under which two production subnets, three non-production subnets were allocated for EC2 and ELBs in different AZs using CIDR.
Configured Internet Gateway to external ELBs, facing internet subnet routing table, installed Chef Agent across 500 UNIX servers, to rectify unknowns from INFRABOT (Mongo DB) and conducted trouble shooting of Load on Servers.
Participated in Apache web servers code configurations, while modified Live EBS for non-production machines with zero downtime and encrypted EBS of 250 RHEL 6/7 versions PROD servers during non-business/weekends.
Conducted daily meetings to follow up on approvals on changes in PROD for installation/configuration of Privilege Access Manager (PAM) tool, along with team tickets assignments for resolution.
Optimized cost on EC2/RDS instances from m3, m3.x, r3, r3.x type to t2, t2.x series type based on last three months report generated from AWS detailed monitoring metrics.
Engaged in assistance to the NOC Team whenever needed, SWAP creation on MySQL production instances on EC2 from alerts configured in NIMSOFT tool.Reported to the Cloud Operations Manager for participating in migration of on-premise VMs and physical Servers and Apps to AWS platform which includes applications present on IBM AIX. Performed monthly patching on Linux/Windows platforms to meet the compliance and fixed security issues reported by Risk Team. AWS Users creation, installation of Load balancers, VPC, Subnets, creating AWS VPC in different regions, under which two production subnets, three non-production subnets were allocated for EC2 and ELBs in different AZs using CIDR. Configured Internet Gateway to external ELBs, facing internet subnet routing table, installed Chef Agent across 500 UNIX servers, to rectify unknowns from INFRABOT (Mongo DB) and conducted trouble shooting of Load on Servers. Participated in Apache web servers code configurations, while modified Live EBS for non-production machines with zero downtime and encrypted EBS of 250 RHEL 6/7 versions PROD servers during non-business/weekends. Conducted daily meetings to follow up on approvals on changes in PROD for installation/configuration of Privilege Access Manager (PAM) tool, along with team tickets assignments for resolution. Optimized cost on EC2/RDS instances from m3, m3.x, r3, r3.x type to t2, t2.x series type based on last three months report generated from AWS detailed monitoring metrics. Engaged in assistance to the NOC Team whenever needed, SWAP creation on MySQL production instances on EC2 from alerts configured in NIMSOFT tool.
Skills: Windows · Virtualization · Network Security · Troubleshooting · Incident Management · Infrastructure · Cloud Computing
Senior Cloud Engineer managing infrastructure on Amazon Web Services with set of 200 Servers.
Reported to the Senior Java Architect, as individual contributor and as Cloud Infrastructure Support Engineer on AWS services like EC2, S3, IAM and RDS, providing support services to our product for various clients in USA and Singapore regions.
Participated in a project for deployment of Customer Central (client) on AWS, by designing Application Infrastructure/Architecture and enhancing existing production machines.
Designed High Availability, Fault Tolerance, Reliable and Auto Scalable based Infrastructure for Customer Central Application at the same time conducted vulnerability assessments using available tools in AWS.
Replicated Cloud ambiance design from in-house VMware based Virtual Instances for client and provided inputs on File-system architecture, while configured host entries for local resolution of servers like Solr-cluster, application-cluster and terracotta-cluster among each other.
Installed, configured and resolved webservers (Engine-X) errors, in various environments like DEV, TEST, UAT and PROD and created external internet-facing and internal Load balancers to support distributed architecture.
Supported various OS Linux releases/Windows 2008/2012 servers on AWS along with Business Intelligence tools like Data Stage, kettle & COGNOS on Linux/Windows, for resolving user-problems.
Engaged, further, in tuning Up New instances assigning security groups, Virtual Private Cloud creation for production instances, SELinux configuration with TCP wrappers, JSON policies for S3 Buckets and Disk/Load/application Management
Achievement:
• Designed High Availability architecture for production instance of clients
• Tightened IAM policies, Security groups and NACL for production setups
ASPAC Infra Application Support Manager for Citibank Data Center.
• Proactively monitored and administered production and development servers remotely at the data center.
• Providing 24/7 on call availability by means of cell phone, instant messaging and E-mail.
• Working in fast-paced, deadline-oriented environments. Solid background in technical support, capacity planning, and security.
• Improved system security by limiting users using unjustified root access.
• Built optimized and patched Linux kernels and mission-critical daemons with CPU optimizations to provide functionality not available in stock kernels and software, performance and reliability.
• Change Implementation plan, ensuring that a Risk Assessment and Impact analysis is undertaken to ensure timely implementation of the changes without major glitches.
• Hands on experience in implementing, supporting and managing critical systems.
• NFS and SAMBA for sharing of UNIX resources among servers and heterogeneous environment. OS upgrades using Tivoli Provisioning Manager and scheduling jobs for upgrades.
• Access Control List implementation for DB and App teams based on the requirement and work flow of the projects.
• Troubleshooting and coordination with vendors like IBM, HP for issue related to hardware like disk replacement, firmware upgrades to access ILO via calls or emails.ASPAC Infra Application Support Manager for Citibank Data Center. • Proactively monitored and administered production and development servers remotely at the data center. • Providing 24/7 on call availability by means of cell phone, instant messaging and E-mail. • Working in fast-paced, deadline-oriented environments. Solid background in technical support, capacity planning, and security. • Improved system security by limiting users using unjustified root access. • Built optimized and patched Linux kernels and mission-critical daemons with CPU optimizations to provide functionality not available in stock kernels and software, performance and reliability. • Change Implementation plan, ensuring that a Risk Assessment and Impact analysis is undertaken to ensure timely implementation of the changes without major glitches. • Hands on experience in implementing, supporting and managing critical systems. • NFS and SAMBA for sharing of UNIX resources among servers and heterogeneous environment. OS upgrades using Tivoli Provisioning Manager and scheduling jobs for upgrades. • Access Control List implementation for DB and App teams based on the requirement and work flow of the projects. • Troubleshooting and coordination with vendors like IBM, HP for issue related to hardware like disk replacement, firmware upgrades to access ILO via calls or emails.
Skills: VMWare ESXi · Technical Support · Windows · Virtualization · Troubleshooting · Incident Management · Infrastructure · Linux
On Site at Google India Pvt Ltd for product Atlas
• Supported Big-data on virtual servers present at different data-center in various parts of the world on Ubuntu operating system.
• End to End Application Test on RHEV Servers and supported developers on it.
• Troubleshooting Atlas Application understanding core dumps and escalation of bugs to Engineers as per need.
• Configured Memory Caching Servers, increased bucket size as per the need for Atlas application tool users.
• Created monitoring alerts like service down or crashed for a Memory Caching Servers.
• Coordinated Atlas application testing like smoke and sanity. Every time meeting SLA by regular follow up on tickets till resolution
• Centralized scripts for almost 4000 operators for installation of mail gent like mutt and complex installations and implementation of new servers or high-end machines like HP-Z220 series deployment.
• Diagnosed the problem of Application when it hangs and restarted or killed service as per requirement.
• Analyzed core dumps of the Atlas application and given immediate temporary fix to the users.
• Deployed latest Atlas application version or rolled back to older one whenever there is huge impact on productivity of users in coordination with engineering teamsOn Site at Google India Pvt Ltd for product Atlas • Supported Big-data on virtual servers present at different data-center in various parts of the world on Ubuntu operating system. • End to End Application Test on RHEV Servers and supported developers on it. • Troubleshooting Atlas Application understanding core dumps and escalation of bugs to Engineers as per need. • Configured Memory Caching Servers, increased bucket size as per the need for Atlas application tool users. • Created monitoring alerts like service down or crashed for a Memory Caching Servers. • Coordinated Atlas application testing like smoke and sanity. Every time meeting SLA by regular follow up on tickets till resolution • Centralized scripts for almost 4000 operators for installation of mail gent like mutt and complex installations and implementation of new servers or high-end machines like HP-Z220 series deployment. • Diagnosed the problem of Application when it hangs and restarted or killed service as per requirement. • Analyzed core dumps of the Atlas application and given immediate temporary fix to the users. • Deployed latest Atlas application version or rolled back to older one whenever there is huge impact on productivity of users in coordination with engineering teams
Skills: Windows · Virtualization · Troubleshooting · Incident Management · Infrastructure · Cloud Computing
Product Support Engineer on MonitorIQ Product gets deployed on Debian operating systems.
Interact with the clients to talk about the problem and requests regarding the complex systems
Configured and administered the network infrastructure
Established and managed iptables with selinux and tcp-wrappers.
Supervised backup and disaster recovery operations
Managing servers on VMware ESXi 3.5 and VMware Workstation
Installing and maintain Sendmail, Postfix, QMail, DNS and OpenVPN servers
Monitored network traffic and adjust system parameters to increase system performance
Involved in shell scripting for system/application in automating server task, installing and monitoring applications
• Check-list for hardware and discrepancies are followed up with hardware Vendor.
• Implementation and maintenance of product MonitorIQ worked on Intel Xeon Quad Core and Dual Core Processor X series.
• Configured RAIDs and installed RAID controller packages like Megacli and 3ware for hardware checks related to disks
• Configuration and troubleshooting on File system like ext3, XFS and log rotation policies as per the requirement.
• Configured FTP account using MySQL and given access to clients on EC2 amazon cloud (PAAS), MySQL administration.
• Reduced seek time of the hard disk for reading more data from disk by increasing the queue size of the buffer.
• Configured IPMI of machines for checking issue related to the processor, heat-sink and for power-cycling it.
• Up-graded versions of product Monitor IQ from one release to the latest stable version.
• Configured Open VPN generated VPN keys and created tun0 and tun1, avoided IP address conflicts.
• Delivery performance enhancement of file systems by setting up LVM.
• Group and User Administration on Linux, Implementing Disk Quota and ACls.Product Support Engineer on MonitorIQ Product gets deployed on Debian operating systems. Interact with the clients to talk about the problem and requests regarding the complex systems Configured and administered the network infrastructure Established and managed iptables with selinux and tcp-wrappers. Supervised backup and disaster recovery operations Managing servers on VMware ESXi 3.5 and VMware Workstation Installing and maintain Sendmail, Postfix, QMail, DNS and OpenVPN servers Monitored network traffic and adjust system parameters to increase system performance Involved in shell scripting for system/application in automating server task, installing and monitoring applications • Check-list for hardware and discrepancies are followed up with hardware Vendor. • Implementation and maintenance of product MonitorIQ worked on Intel Xeon Quad Core and Dual Core Processor X series. • Configured RAIDs and installed RAID controller packages like Megacli and 3ware for hardware checks related to disks • Configuration and troubleshooting on File system like ext3, XFS and log rotation policies as per the requirement. • Configured FTP account using MySQL and given access to clients on EC2 amazon cloud (PAAS), MySQL administration. • Reduced seek time of the hard disk for reading more data from disk by increasing the queue size of the buffer. • Configured IPMI of machines for checking issue related to the processor, heat-sink and for power-cycling it. • Up-graded versions of product Monitor IQ from one release to the latest stable version. • Configured Open VPN generated VPN keys and created tun0 and tun1, avoided IP address conflicts. • Delivery performance enhancement of file systems by setting up LVM. • Group and User Administration on Linux, Implementing Disk Quota and ACls.
Skills: Virtualization · Troubleshooting · Incident Management · Infrastructure
Monitoring Servers using Nagios and clusters with the help of Ganglia tool.
User and Group Administration for Linux Servers.
ACLs implemented based on request created in Remedy with management approvals.
OS patching on Quarterly basis based for all environments.
VMware Administration for testing applications on it.
Hardware Firmware Upgrades and Patching necessary drivers based on repository.
HP ILO, IPMI administration for h/w failures and follow up with vendors on replacements and fixes.
Disk quotas implementation based on needs defined by the senior team members.
Troubleshooting issues on performance, network and load on the servers.Monitoring Servers using Nagios and clusters with the help of Ganglia tool. User and Group Administration for Linux Servers. ACLs implemented based on request created in Remedy with management approvals. OS patching on Quarterly basis based for all environments. VMware Administration for testing applications on it. Hardware Firmware Upgrades and Patching necessary drivers based on repository. HP ILO, IPMI administration for h/w failures and follow up with vendors on replacements and fixes. Disk quotas implementation based on needs defined by the senior team members. Troubleshooting issues on performance, network and load on the servers.
Skills: Virtualization · Troubleshooting · Incident Management · Infrastructure · Linux System Administration · Shell Scripting
Projects executed during university days were smart-card voting system using dotnet technology.