Shankar K

Experience

• 

  Tata Consultancy Services

  Sept 2016 - Feb 2024

  ● Managed Kubernetes Cluster and Upgraded Kubernetes components like kubeadm, kubelet, worker nodes. ● Proficient in writing Kubernetes yaml files for deployment of microservices in Kubernetes cluster.● Deployed Kubernetes using kubeadm tool, eksctl.● Performed etcd backup and restore activity.● Addition of new nodes or removal of nodes in openshift cluster using Ansible tower.● Developed ansible playbook to invoke pods auto restart whenever we notice OOM error.● Deployed pods, services, replicas, secrets, configMaps on K8s cluster. ● Troubleshooted application failure, worker node failure, control plane failure.● Applied networking in Kubernetes, created ingress and egress rules.● Created Kubernetes Cluster from scratch using kubeadm tool and deployed CNI plugins like Weave, Flannel etc.● Addition of subnets to AVI networks which is used as Ingress controller/load balancer.● Performed Maintenance activities on cluster like draining the pods, cordoning and uncordoning nodes.● Providing Java and Heap dumps of Pods for performance analysis.● Developed dashboards using splunk to monitor the applications performance, business calls.● Used Terraform to create VPC in AWS infrastructure and created EC2, LB and DB inside VPC. ● Used Helm chart to install Prometheus and Grafana to monitor the Kubernetes Cluster. ● Good knowledge in setting up Cloud environment using various services in AWS.● Gained good knowledge of AWS Cloud services (EC2, S3, SQS, SNS, EB, ELB, Lambda, Cloud Formation etc.) Show less ● Perform admin tasks by utilizing TIBCO administrator for User Management, Resource management and Application management. ● Configured TIBCO EMS fault tolerance setup.● Applied strong knowledge of Linux operating systems. ● Successfully configured Geneos to monitor CPU, memory, Database, BW components like (BW Applications, Admin, Hawk and EMS).● Applied strong knowledge of shell scripting.● Automated repeated tasks such as EAR deployment, deletion of redundant files, close/purge iProcess cases.● Participated in client meetings to discuss on the critical incidents, performance improvements and enhancements on the platform.● Developed Ansible playbooks to automate the repeated tasks thereby reducing manual login to servers. ● Deployed Services Manually through scripts and AppManage commands. ● Involved in creating new Queues, Topics and Bridges as a part of release activities, validating all the deployment configurations. ● Debugged the logs/Components keenly to troubleshoot the reported issues at different levels, investigate the root cause and resolve the same within the SLA based on severity. ● Handled environmental issues like Memory, CPU utilization and Patching in production and downstream TIBCO environments. ● Have hands-on in TIBCO iProcess concepts (Procedures, case, user access, swutil & swadm). ● Analyzed backend logs in Linux/Solaris server in OS terminal and working on troubleshooted the issues. ● Performed SSL certificate renewal for TIBCO admin URL’s. ● Raised Service requests, Incidents and Change request in ServiceNow based on the issues and resolved the tickets assigned adhering to the SLA. ● Involved in Disaster Recovery (DR) Test with successful testing of all integration scenarios. Show less

  • DevOps Engineer for PaaS Environment

    Oct 2020 - Feb 2024

  • System Engineer

    Sept 2018 - Oct 2020

  • Assistant System Engineer

    Sept 2016 - Sept 2018
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  Deutsche Bank

  Aug 2023 - now

  Technology Service Analyst