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Sairam Suram - Unix/Linux System Administrator

[email protected]

Location: Colorado Springs, Colorado, USA

Relocation: Yes

Visa: H1B

Sairam Suram Unix/Linux System Administrator +1 (719) 213-4389 [email protected] Colorado Springs, CO Yes H1B ______________________________________________________________________ PROFESSIONAL SUMMARY: Having 9 years of experience in Linux/HPUX/Solaris/AIX Systems Administration and support. Experience in installation, configuration, and maintenance of HPUX V1/V2/V3, Solaris 9/10/11 and RHEL 5/6/7/8. Extensively worked on customizing Anaconda to update different kernel/boot parameters. Anaconda installations on non-local (fiber-channel, iSCSI, NAS) devices in RHEL kickstart. Provided 24x7 production support in large datacenter environment. Experience in administration of Linux running on VMware ESX, vSphere and Citrix XenServer. Worked on Solaris Zones and LDOMs running on Solaris 10. Experience in Installing Firmware Upgrades, kernel patches, systems configuration and performance tuning on UNIX/Linux systems. Experience with working on HP &Cisco UCS servers and blade infrastructure setup. Extensively worked in setting up two and three node VCS, Oracle RAC, Service guard and RHEL cluster. Experience with VERITAS Volume Manager (VxVM), VERITAS File System (VxFS), VERITAS Net Backup and VERITAS Cluster Server. Worked on Solaris Zones and LDOMs running on Solaris 10 User and group management like adding, deleting & modifying the users and groups to manage the Database and application hosts. Responsible to closing the vulnerabilities to avoid the attackers on the server. Expertise in Linux backup/restore with tar including disk partitioning and formatting. Worked with DBA team for database performance issues, network related issue on Linux / Unix Servers and with vendors for hardware related issues. Responsible for Backup solutions to perform the Backup and Restoration for Physical and Virtual machines. Troubleshooting and analysis of hardware and software failures for various UNIX servers core dump and log file analysis setting up password less connectivity for application users. Core member of the team for Migration project to successfully migrate both virtual and physical Solaris and Linux Servers. Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc. Maintained Load balancing, High availability, Failover functionality and Disaster recovery included. Performed, Manage, Resume, Release Privileged Credential using CyberArk Privileged Management Vault Administration, configuration, troubleshooting. Responsible for managing 30k privileged accounts, and 10k user accounts centrally from CyberArk 10.5 for protecting account credentials, Identity Management and access management for better control, visibility Prepared documentation for standard operating procedures (SOP) of various administration tasks. Education: Bachelors in Computer Science and Engineering. TECHNICAL SKILLS Operating Systems RHEL 5, 6, 7, Solaris 8, 9, 10,11 Ubuntu 10.04, 12.04, SuSE 9, 10, 11, IBM-AIX 5/6, HPUX 11.11,11.23.11.31 Hardware HP ProLiant, Blade servers, Sun Servers E4500, E6500, E6900, E10K, E15K, E25K, V280, V490, V880, V890, M3000, M4000, M5000, T5120, T5220, T5420, T4-1, T4-2, T5-1, Dell PowerEdge R710, R720, R810, R820, DMX3 and DMX4 Storage Arrays, EMC Symmetrix. Storage technologies VERITAS Volume Manager, VERITAS File System, VERITAS NetBackup, LVM. Web/ Application Server Tomcat, Apache DB2, Oracle R11&R12. Network Protocols DHCP, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, PAM, Kerberos, nslookup, RIP, OSPF, BGP, TCP/IP and tcpdump. Cluster Environment VERITAS Cluster Servers, Oracle RAC, Red-hat Cluster, Pace Maker (PCS) and Service Guard. Programming Languages C, SQL, HTML, Ruby, Ansible, Perl and Shell Programming and Python. PROFESSIONAL EXPERIENCE: Worked With Clients: AT&T, Home Depot, Citi Bank and Bank of Baroda AWS: Built S3 buckets and managed policies for S3 buckets and used S3 bucket and Glacier for storage and backup. Built a VPC, established the site-to- site VPN connection between Data Center and AWS. Develop push-button automation for app teams for deployments in multiple environments like Dev, QA, and Production. Perform troubleshooting and monitoring of the Linux server on AWS using Zabbix, Nagios and Splunk. Created automated pipelines in AWS Code Pipeline to deploy Docker containers in AWS ECS using services like CloudFormation, Code Build, Code Deploy, S3 and puppet. Amazon IAM service enabled to grant permissions and resources to users. Managed roles and permissions of users with the help of AWS IAM. Initiating alarms in CloudWatch service for monitoring the server's performance, CPU Utilization, disk usage etc. to take recommended actions for better performance. Configured AWS Multi Factor Authentication in IAM to implement 2 step authentication of user's access using Google Authenticator and AWS Virtual MFA. Design AWS Cloud Formation templates to create custom sized VPC, Subnets, NAT to ensure successful deployment of web applications and database templates. Installations: HP-UX v11.11, v11.23 and v11.31 OS installation through Ignite-UX server/DVD/Gold disk and configure Ignite server and client server. Installing RHEL 5/6/7/8 Operating system at both physical and Virtual Environment. Expertise in Planning, Installation, Configuration and Maintenance of IBM HACMP V5.3 on AIX 7.1/7.2. Participated as a member of the Unix Build team with responsibility to install and configure AIX LPARs onPower7servers. Installed HACMP cluster in a Highly critical SAP R/3 environment with also expertise in installing R/3 on the servers. Strong knowledge in OS installations, migrations, upgrades on both physical and virtual. Applying security patches to RHEL servers using Red Hat Satellite and using software depot file for HPUX. Upgrading the Firmware of HP OA, ILO, BIOS Versions. Upgrading OS from older service pack to latest service pack in AIX and booting the server with alternate rootvg. Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage Installing Firmware Upgrades, kernel patches, systems configuration and performance tuning on UNIX/Linux systems. Configuration: Configuring the server from scratch as per the customer requirement within the timelines. Configured HACMP clusters for database on P595 and regularly contacting IBM to solve critical HACMP related issues. Creating the Filesystems in Veritas File-system (VxFS), Veritas Volume Manager (VxVM), Logical Volume Manager (LVM), Solaris Volume Manager (SVM). Configuring HPVM s on the Base machine and allocating necessary resources to bootup. Configuring the Bonding for the redundancy. Creating, Extending and Reducing the File-System in Linux, HPUX and Solaris Server's as per the client requirement in the environment. Configuring and maintaining the server profiles, Uplink-sets, assigning the network for the servers in VCM. Configuration of clustered servers in the physical and virtual environment. Develop, Maintain, update various scripts for services (start, stop, restart, recycle, cron jobs) UNIX based shell, Perl. Mounting the NFS shares on the UNIX boxes provided by NAS/Netapp team Configuring Multipath, NFS, NTP, DNS. Clusters: Extensively worked in setting up two and three node VCS, Oracle RAC, Service guard and RHEL cluster (Red-hat & Pacemaker). Addition/ Deletion of node in the cluster. Configuring the resources and adding into resource groups. Switching resource groups from one node to another node and vice-versa in all clusters. Integrating the Filesystems into cluster and freezing/Unfreezing as per the requirement. Provisioning the clustered Volume groups and configuring the fencing for the RHEL clusters. Applying the security patches for the clustered servers. Migrations: Extensively worked in migrating the Filesystem Luns from One storage box to another storage box online. Worked in migrating the OS from low configuration H/W to High-end configuration for both Linux and HPUX. Involved in Data-center migration. Worked Migration for HPUX, Linux, Solaris. Worked on LVM, VxFS, SVM, VxVm and ZFS migration. VMWARE: Worked in creating the VM slice and attaching the required devices to the VM server. Migrating the Virtual machine from one host box to another host box. Attaching the RDM and Datastore luns to the server as per the requirement. Worked in taking the snapshot/Clone of the server and reverting as requested. Creating the templates and Built Linux servers using VMWare ESXi. Storage: Configuring the Alias and Zones in SAN Switches for Multipathing. Assigning the Luns to servers from the 3Par Storage. Creating the CPG's in 3PAR storage and Virtual Volumes. Creating the physical and snap volumes, Exporting and Un-Exporting the VV s to host. Collecting the supportshow and Insplore logs. Responsible for backup and restoration for physical and virtual machines. Hardware: Routing the LAN cables from server end to network ports and FC cables from server end to SAN switch end and connecting into ports. Inserting & Removing the Medias from tape library before and after back-up. Configuration of OA (On-board Administration) and ILO in the enclosure and upgrading the Firmware. Up-gradation of CPU and Memory modules in the various servers. Identifying faulty part physically and performing the analysis from logs to identify the faulty. Incident, Problem and Change Management: (ITIL) Working on auto generated tickets (Use Ticketing Tool Service Now). Working as a part of 24x7-support team (On Call). Maintained efficient architecture as per organization priorities. Provided technical support to all ITIL process owners and performed audits on process. Good understanding of ITIL V3 lifecycles and processes. Working on the problem tickets, changes and service now. Home Depot July 22 June 23 Unix/Linux System Administrator Followed ITIL Process like Incident, Change and Problem Management. Providing production support 24/7 and Maintenance for 20000+ servers of LINUX, SOLARIS and HP Servers. Managing Clusters like Red-hat cluster, Service-Guard, Pacemaker and VERITAS for the Database redundancy. Worked with DBA team for database performance issues, network related issue on Linux / Unix Servers and with vendors for hardware related issues. Experience with change control management using Service now tool in handling Work Orders on production systems in a large datacenter environment. Responsible for provisioning and patching large number of Linux physical and virtual servers using Red-hat Satellite server. Troubleshooting and analysis of hardware and software failures for various UNIX servers core dump and log file analysis setting up password less connectivity for application users. AT&T Jan 21 July 22 Unix/Linux System Administrator Worked with KVM Hypervisor to install, configure and maintain Red Hat Linux. Implemented day-to-day tasks in Red-hat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system. Installation, Configuration and Maintenance of VERITAS cluster server VCS for UNIX boxes. Set up repositories for Red hat, implemented YUM, SSH and other security tools. Implemented RAID techniques and created disk groups and volumes using VERITAS Volume manager. Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, HW and SW RAID, multipath, file systems, network using the tools NAGIOS and BMC Tools. Bank of Baroda May 2019 - Jan2021 Unix/Linux System Administrator: Installation/Maintenance of Hardware/Software in Production, Development & Test Environment as an integral part of the Unix/Linux (RHEL 6.x,7.x/8.x, HP-UX, Solaris/ AIX) Support team. Performing Failovers in HACMP cluster environment, monitoring servers. Extensively worked with SAN storage IBM SVC and DS series, EMC Clariion, Symmetrix and Hitachi storage solutions. Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands. Installed and configured Red-hat Satellite server for package transfer across servers to store client's system profile and to control other servers in the network. Using VMware vCentre, created Data-Centre Environment by creating VMware Clusters, adding ESX hosts in the clusters. Installation, Configuration and Maintenance of VERITAS cluster server VCS for UNIX boxes. Maintained Load balancing, High availability, Failover functionality and Disaster recovery included. Citi Bank Sep 2018 - May2019 Unix/Linux System Administrator Administration of RHEL 6,7 and 8 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual servers. Installation of Virtual Machines in the HP boxes. Managing systems routine backup, scheduling jobs using Cron, enabling system logging, network logging of servers for maintenance, performance tuning and testing. Upgraded firmware on HP, DELL and IBM blade servers. Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes. Bank of Baroda June 2014 Sep 2018 Unix/Linux System Administrator Strong knowledge of OS installations, migrations, upgrades on both physical and virtual. Experience with VERITAS Volume Manager (VxVM), VERITAS File System (VxFS), VERITAS Net Backup and VERITAS Cluster Server. Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, Sendmail and SFTP. Worked on automation tools including HPSA, Oracle OpsCenter, Red-hat Satellite and VMware. Worked with Database and Middleware administrators to tune kernel parameters. Team player with good management, analytical, communication and interpersonal skills. Keywords: cprogramm quality analyst user experience sthree rlang hewlett packard fibre channel Colorado