Senthilnathan Jaikrishnan is a Linux and AWS administrator with over 3 years of experience administering Linux servers and AWS cloud platforms. He has extensive skills in Linux server administration, AWS services including EC2, S3, VPC, RDS, monitoring tools like Nagios, scripting languages like Python and Bash, configuration management tools like Ansible, and databases like MySQL. Currently he works as a Linux administrator at Impelsys India where he manages Linux servers, implements Hadoop clusters, performs migrations, and provides support to developers.

1. SENTHILNATHAN JAIKRISHNAN
Linux + AWS Administrator Mail: jsenthilnathanlinux@gmail.com , +91 8892222765
+91 9865795767
No.813/A1 1st
Floor , RKK Nagar, 26th
Main, BTM Layout Near Ganesh Temple, 2nd
Stage- 560076,Bangalore.
Professional Summary
 3.8 Years of working experience in administering “Linux Administrator” and “Cloud Platform(AWS)”.
Skills
 Linux Server Administration, Data Centre Administration.
 AWS Cloud Administration (EC2, EBS, S3, VPC, CloudWatch, SQS,SNS,RDS,AMIs, Network & Security,
amazon aurora, AWS config, IAM, Elastic Beanstalk, CloudFront, Glacier, Route53, CloudTrail, Service
Catalog, Trusted Advisor, Certificate Manager, Load Balancers, Auto Scaling, Cloudformation),.
 IT Infrastructure Management.
 Monitor Tools : Nagios, Monitis, Uptime Robot, Cloud Watch,Datadog.
 DB Knowledge : MySql, MangoDB, Amazon RDS, Amazon Aurora.
 Code Repo Tools : Git, SVN,Jenkins,Ansible, Gerrit.
 Application Tools: Apache, Nginx.
 Build & Automation Tool: Docker, knowledge on ansible
 Bug Tracking & incident ,Project Management Tool : JIRA, Redmine, Bugzila, & Pagerduty .
 VM : Citrix-zenserver
 Scripting : Bash, knowledge in python script.
Currently Working in Impelsys India Pvt Ltd as Linux Administrator (NOC) (Jun30 2015 Till date)
Designation : Linux Administrator
Platform : Linux & AWS & Datacenter (Rackspace)
Key Deliverer's From Noc Team:-
 Migration and Setting-up the production server in AWS and Rackspace ,
 Creating the live sites in cloud server and migration from staging environment to Live
environment,
 Monitoring 670 sites still now in production environment through monitis and
uptimerobot from UK & US and Nagios{US, India,}
 Implementing ongoing Administration on Hadoop{Spark,Hive,Map Reduce}
infrastructure with spark in single and cluster nodes.
 Day to day Production server's setup in AWS for multi-full projects from different
Team,
 Day to day Production server's issue fixing like {space, lvm ,mounting the new EBS
volume,},
 Troubleshooting live server issue like{upgrade, update, package management,kernel
update }
Roles & Responsibility support for Developers:-
 Migration server from staging environment to live environment(In AWS).
 Settingup new production server's in AWS cloud,based on projects requirements.
 Git – Server Set-up and configuration based on Team
 Spark (Hadoop) – ongoing project for particular Team (All responsibility )
 Jira - Set-up and migration in dedicated server
 Redmine – Set-up and Migration in dedicated server
 Gerrit - Set-up and Migration in dedicated server.
 FTP - Management and creating the new ftp and troubleshooting

2.  SVN - Management and migration .
 Cloud Knowledge sharing to Employer and to Colleagues,
 Troubleshoot day to day issue request from employee in Linux server's.
 OpenLDAP management.
Projects Handled From FCOOS Technologies Pvt Ltd (07-Mar-13 to 29-Jun-2015)
1) On-site Linux Administrator at XOLO (Jan 2015 – Jun 29 2015).
Client : XOLO
Designation : Senior Linux Administrator
Platform used : Linux +AWS
Key Deliverer's:-
 Installation and configuration of Redmine project Management suite In BLR & NHQ.
 Installation and configuration of JIRA - Issue & Project Tracking Software | Atlassian
 Installation and configuration of Android Build Server Environment.
Roles & Responsibility:-
 Redmine - Troubleshooting the issues and maintaining.
 Jira - Migration and troubleshooting the issues and maintaining.
 Gerrit - Migrating and troubleshooting the issues and maintaining.
 Android Build Server Environment set-up and configuration and maintaining
 Setup Android studio and eclipse setup to employee with troubleshooting.
 Resolving day to day higher level tickets, ( Production server and application support issues without any
escalations).
 Monitoring all servers through Nagios.
Achievement:-
 Redmine application e-mail notification through Application (which is escalated from IBM
Team).
 Server status notification through mail with complete details about server using script with
tool(Logwatch).
2) On-site Linux Administrator at ConnectM Technology Solutions Pvt Ltd (Sep 2013 – Dec2014).
Client : ConnectM Technology Solutions Pvt Ltd
Designation : Linux Administrator
Platform used : Linux + AWS
Key Deliverer's:-
Operating Systems : Redhat, CentOS 6.5, Ubuntu , Mint, Fedora,Windows( 7, 8.1,2003,2012R2),
 Service and Configuration: FTP, Samba, SVN, SSH, SFTP, NIS, NTP, DNS, DHCP, RAID, LVM, ELK
Autofs, Disk Quotas, Bugzilla, ,Mail server (iredmail,PhPLDAPadmin),.
 Server &Service in Windows: SharePoint2013, windows server (2003, 2012),FTP, AD, DNS, DHCP,
MacAfee.
 VM's : Citrix-Xenserver, Vmware.
 Firewall : Opensourcs Pfsence Firewall .
 Cloud Platform : AWS.
 Application : Java, eclipse, Node.js, spagoBI, Putty, winscp, Team viewer, apache,Jboss,).
 DB : MySQL, MongoDB,
 Backup Tools : Duplicati, Cron, Rsync,Tar, ufsdump,cpio.

3.  Performance Tools : Top, Vmstat, sar, iostat, nice, renice, uptime, netstat fstab, chkconfig, Wall,
telnet, nslookup, route.
 Security services : SELinux, Iptables, ssh, user management.
 Hardware $ storage : Dell PowerEdge M820 (Blade server), Dell poweredge R710 R820 ,
IBM System X 3550 M2, S3 Cloud Storage, NAS .
 Mail services : Postfix, Sendnail, SMTP, Imap.
 Monitoring Tool : Nagious Server & Nagious Client (NRPE/NSCA),
 Installed and configured Share Point 2013 on windows 2012 server.
 Installed and configured Bugzilla.
Roles & Responsibility:-
 OS recovery and disaster recovery procedures based on situation.
 Apply patches to OS / application or upgrade the applications based on customer request.
 LVM management in production servers to manage the storage issues.
 Raid management in data-centre (TriMax, STPI, and Fcoos DC) productions servers.
 Scheduling and management of automatic processing using Shell Scripts with Crontab.
 Maintaining the details of all server, desktop and laptop through IT inventory (OCS).
Achievement:-
 Handled Server relocation across data-centre and recovered data from failed servers in schedule.
 AWS cloud server relocation from one region to another.
 Installed and configured six node Hadoop cluster within 2 days for development activities without any prior
knowledge
 Resolved day to day server and end point problems without any escalations.
3) On-site Assistant Linux | Windows Administrator at iPRIMED Education Solutions Private Limited
(Mar 2013 -Aug 2013).
Client : iPRIMED Education Solutions Private Limited
Designation : Assistant Linux & windows Administrator
Platform used : Linux | Windows | AWS
Key Deliverer's:-
 Helping to seniors in daily basis : FTP, Samba, SVN, SSH, windows server 2003, AD, DNS, DHCP,
Xenserver, Mail server (iredmail, PhPLDAPadmin), MacAfee, Nagious
Server/client, Cloud Watch,EBS,SG.EIP.
Roles & Responsibility:-
 Operating Systems | Installation & Troubleshoot in Ubuntu , CentOS, Windows 7,8.
 Installing and configuring desktop and then assign to the employee.
 Mail id and access id creating for employee and assign the system location.
 Apply patches to the OS / application or upgrade the applications.
 Maintaining the details of all server, desktop and laptop through IT inventory (OCS).
 Mail configuration on daily basis (Outlook, Thunderbird and Evolution).
Achievement:-
 Tickets closing without escalations from the employee's and managers.

4. Education
 MCA -PSG College of Arts & Science, Coimbatore, Tamilnadu, India. 2013 80%
 MBA HR -Bharathiyar University, Coimbatore, Tamilnadu, India. 2013 60%
 BCA -Sri Vidya Mandir Arts and Science College, Tamilnadu, India 2010 64%
 HSC -Kalaimagal kalalaya Matriculation Higher Secondary School, 2007 54.50%
 SSLC -Himalayan Matriculation Higher Secondary School, Tamilnadu, 2005 67.40%
Working in FCOOS:
 Corporate Open source technology Training Organizer and Trainer at FCOOS TechnologyPvtLtd.
Personal Information
 Full Name : Senthilnathan. J
 Father Name : Jaikrishnan
 Date Of Birth : 6th
March 1990
 Nationality : Indian
 Address : 4-268, Goundappanur, Valipatti, Pochampalli(Tk), Krishnagiri(Dt),
-635306
 Languages : English, Tamil, Kanada.
 Gender : Male
 Passport : Yes
Declaration
I Hereby Declare That the Above Written Information and Details Are True To the Best of My Knowledge and Belief.
Place: Bangalore (BTM) SENTHILNATHAN J