Ponmeritter Jacob

● Used company troubleshooting resolution tree to evaluate technical problems and find appropriate solutions.
● Migration activities 6 to 7 , 7 to 8 and 8 to 9 (In place upgrade, Cutover migrations) AWS and VMware.
● Logged updates on support tickets to communicate status to users and managers.
● Installed Red Hat Enterprise Linux and applying security policies for hardening the server based on the company policies
● Created and maintained user accounts, profiles, security rights, disk space and process monitoring
● Excellent knowledge of services like DNS, DHCP, NFS, Sendmail, Apache Web Server,Samba, SSH, Telnet, HTTP, YUM, RPM Package Management
● Developed UNIX shell scripts to accomplish redundant tasks to simplify in distributed administration
● Monitored and managed Servers and Services Using Nagios Performed daily system monitoring, verified the integrity and availability of all hardware and server resources, and reviewed system and application logs
● Evaluated performance of systems to see that they meet business needs
● Managed Redhat Pacemaker clusters Create snapshots and amazon machine images (AMIs) of the instances for backup and creating clone instances
● Used servicenow to track issues and Change Management
● Troubleshoot Monitoring Alerts
● Create and maintain user's accounts, profiles, security, rights disk space and process monitoring
● Provide technical support by troubleshooting day-to-day issues with various Servers on different platforms
● Managed physical and cloud infrastructure running Redhat/CentOS/Ubuntu on AWS cloud and x86, SPARC hardwares.
● Day to day management/monitoring/troubleshooting of multi-tier applications using Puppet and Nagios in Dev, QA, Prod environments.
● Actively involved in the design document of Continuous Integration Continuous Deployment project.
● Extensively used native unix commands like awk, sed, find, grep, cut, paste in bash scripting as per the requirement.
● Documenting project related, operational related procedures. Manage network security using Load balancer, Autoscaling, Security groups and NACLS.
● Support current migration of Data Center to Amazon Cloud. Document system configurations, Instance, OS, and AMI build practices, backup procedures, troubleshooting guides, and keep infrastructure and architecture drawings current with changes.
● Provide oversight and guidance for the architecture, development best practices for application hosting, and infrastructure deployment for each application.
● Experience with analysis of logs and performing root cause analysis for various issues coming up on daily basis
● Monitoring Live Traffic, logs, Memory utilization, Disk utilization and various other factors which are important for deployment.
● Troubleshoot and performance tuning issues with applications/DB like Oracle
● Support of Applications like Apache Tomcat and Java based applications running on Linux machines for multiple clients.
● Installation, configuration and administration of Linux (Red Hat, Centos).
● Storage Provisioning, Volume and File system Management using LVM/Veritas on HPUX/Redhat pacemaker.
● Managed and Generated the CVE details through the Nexpose Tool
● Evaluate the CVE details and apply the patching based on that. To enable high-performance computing, Organize the physical components of the system, work with the vendor to examine the core dump, and solve challenging problems
● The hardware firmware proactively to maintain the system current in the event of any component failure.
● In both physical and virtual servers, install, setup, and troubleshoot UNIX operating systems such as RedHat Enterprise Linux, Oracle Enterprise Linux, SUSE Linux, Ubuntu Linux, and CentOS. Configure the Linux systems
● Utilizing AWS services like Amazon EC2, Amazon Elastic File System and Amazon Load Balancer, cloud management is possible
● Upgrade the operating system patches and configure the Red Hat Linux operating system on the satellite server Security vulnerability management involves routinely assessing the security threats and fixing them with the relevant remedies.
● Software clusters like Veritas Infoscale and Pacemaker can be installed, configured, and maintained
● Hotfixes and patch upgrades are also applied to all cluster nodes Virtual machine administration, including hardware resource management, snapshot creation, cloning, and migration
● Develop an operating system hardening script or template in accordance with the security guidelines, then apply it to every Linux server
● Work on complicated or protracted problems brought up by users, incidents, and problem management records in order to provide a long-term solution and record it for future use
● Use Active Directory integrated tools to configure the User/Group Management and maintain safe password complexity for Linux systems utilizing Pluggable Authentication Modules
● To increase system management flexibility and overall efficiency, move the Linux servers from real hardware to virtual hardware.
● To update the Linux operating system version to the most recent supported version, do an in-place upgrade.
● Conduct yearly disaster recovery tests for all vital production servers and applications to guarantee the recovery point and recovery time objectives
● Ensure that the end-to-end testing is finished for a successful migration as you migrate Linux servers from an on-premises to an AWS cloud environment
● Assign the servers to a monitoring tool so that it can gather metrics on a regular basis, evaluate system performance, and resize the system as needed if it is undersized relative to its resources.
● Work with all business stakeholders to coordinate server hardware or operating system maintenance tasks, and make sure they are carried out smoothly

• Installing and Administering for Production servers in 24x7 environments.
• Patching the Servers for every quarter within the Scheduled Window.
• File System Management like creation, Expansion, decommission
• Rebooting the Servers for monthly Maintenance Activity
• Decommission the LUN from OS end
• Troubleshooting the Server.
• Disk replacement activities.
• Handling Incident Management record (IMR)
• Coordinating with application & Database team for installation for outage changes.
• Vulnerability has found in the Server, Notify to Customer, and take action.
• Coordinating with Hardware vendors and Schedule the activity

★ Patching of standalone and clustered nodes (RHEL, AIX, SOLARIS).
★ Handling tickets (Sev 1,2 3) 24/7 support.
★ Cluster Failover test (VCS, HACMP)
★ GPFS upgrade
★ TSA upgrade
★ EMC powerpath upgrade
★ Firmware up gradation,
★ Hands on experience in incident management and change management
★ Performed Installation and Up gradation of Operating System(s),
★ Operating system installation.
★ Maintaining Mirror and Re-mirror of rootvg.
★ Deployment of application codes as per the request of app team.
★ Coordinating with Application, DB, MQM and CA team for working the
implementation plan.
★ Security Health checks of servers as per GSD331.

 Installing, configuring and administering AIX Midrange P series servers.
 Experience in VIOS and LPAR configuration in a highly virtualized System P
landscape.
 Experience in installation of operating system APAR and updating the TL/SP.
 Experience in firmware upgrade.
 Disk storage management using AIX Logical Volume management.
 File systems management.
 Knowledge of performance monitoring.
 Experience in user administration
 Experience in process monitoring and managing.