Mithun Kumar is a Linux System Administrator with over 10 years of experience maintaining mission critical infrastructure. He has extensive skills in Linux, networking, security and automation tools like Puppet, Cobbler and Nagios. His objective is to use these skills for fault tolerant monitoring and maintenance. He has worked as a Cloud Operation Engineer and Senior Production Engineer managing servers, virtualization, backups and migrations.
Zimbra is the leader in Open Source Email and Collaboration. In July 2016 we've released the v8.7 with enhancements for Service Providers like SSL SNI and a new Packaging System, as well as new Security Features like Postscreen to protect the MTA from SPAM and bad connections, and 2FA, giving to the users the opportunity to protect their Mailbox by using an external TOTP application in addition to their regular password. Zimbra Collaboration 8.7.1 was released in October 2016 fixing some upgrade issues from older ZCS issues, and adding Official Support for Ubuntu 16.04 LTS.
Increasing Business Value Through High-Availability TechnologyNexenta Systems
This Webinar features Jessie Bryan (Dir. of Systems Engineering at Impulse Advanced Communications) and discusses the high-availability capabilities in NexentaStor, including:
- eliminating a single point of failure with active-active fail-over to a standby system
- establishing fail-over groups and implementing highly cost-effective disaster recovery
- achieving zero data loss and downtime with half the complexity
- automating and non-disruptively testing fail-over / fail-back via NexentaStor
- setting up manual and automated fail-over of critical applications and services in a clustered environment
Finally, learn how Impulse - a communications provider focused on voice and data services - leverages the Nexenta-certified Pogo Linux StorageDirector Z2 HA Cluster SAN solution to deliver continuity of their services to customers.
Webinar Date: March 15th, 2011
Zimbra is the leader in Open Source Email and Collaboration. In July 2016 we've released the v8.7 with enhancements for Service Providers like SSL SNI and a new Packaging System, as well as new Security Features like Postscreen to protect the MTA from SPAM and bad connections, and 2FA, giving to the users the opportunity to protect their Mailbox by using an external TOTP application in addition to their regular password. Zimbra Collaboration 8.7.1 was released in October 2016 fixing some upgrade issues from older ZCS issues, and adding Official Support for Ubuntu 16.04 LTS.
Increasing Business Value Through High-Availability TechnologyNexenta Systems
This Webinar features Jessie Bryan (Dir. of Systems Engineering at Impulse Advanced Communications) and discusses the high-availability capabilities in NexentaStor, including:
- eliminating a single point of failure with active-active fail-over to a standby system
- establishing fail-over groups and implementing highly cost-effective disaster recovery
- achieving zero data loss and downtime with half the complexity
- automating and non-disruptively testing fail-over / fail-back via NexentaStor
- setting up manual and automated fail-over of critical applications and services in a clustered environment
Finally, learn how Impulse - a communications provider focused on voice and data services - leverages the Nexenta-certified Pogo Linux StorageDirector Z2 HA Cluster SAN solution to deliver continuity of their services to customers.
Webinar Date: March 15th, 2011
[Bind DNS + Zimbra + SpamAssassin] Antispam Installation GuideMạnh Nguyễn Văn
To configure our system, I used the following software:
- DNS server: Bind DNS.
- Email server: Zimbra Collaboration Suite open source edition.
- Anti-spam: SpamAssassin.
- Mail client: Zimbra
Archiving and e-Discovery for Novell GroupWiseNovell
With an increase in regulations and internal policies governing data retention, e-mail has come into the spotlight. In fact, securing and preserving e-mail data is more important than ever before. Attend this session to hear the perspective of a legal expert in e-mail archiving and e-Discovery. We'll also discuss the options available for addressing this need through our partners, many of whom have significant expertise in this area.
Best Practices for Deploying Enterprise Applications on UNIXNoel McKeown
Gain some insight to a UNIX based operating system and the types of tasks a build team or vendors perform. How to prepare a UNIX server for typical enterprise deployments.
The best practices applied to a UNIX platform in a telco environment. Some hints, tips, troubleshooting and practical knowledge.
Simplifying systems management with Dell OpenManage on 13G Dell PowerEdge ser...Principled Technologies
Automated systems management and additional connectivity solutions can reduce the number of administrators you need to run your datacenter or simply free up administrators to innovate rather than tying them up with routine management tasks. We found that the Dell OpenManage suite provides several new features for 13G Dell PowerEdge server solutions to streamline management tasks in both time and steps. Other new features let us easily connect to iDRAC right from the server. Updating firmware with Dell OpenManage features was also easier—eliminating 213 steps for updating a single server compared to updating manually.
The latest versions of the Dell OpenManage suite of system management tools and the power of iDRAC 8 contained within Dell 13G servers gives administrators increased flexibility and powerful new options for managing their data centers that translate to demonstrable savings in time and administrative effort. These automated enhancements and new technologies enable administrators to manage increasingly larger workloads while reducing the amount of hands-on work required for each system, bringing real value to systems management and datacenter operations.
At Microsoft’s annual developers conference, Microsoft Azure CTO Mark Russinovich disclosed major advances in Microsoft’s hyperscale deployment of Intel field programmable gate arrays (FPGAs). These advances have resulted in the industry’s fastest public cloud network, and new technology for acceleration of Deep Neural Networks (DNNs) that replicate “thinking” in a manner that’s conceptually similar to that of the human brain.
Watch the video: http://wp.me/p3RLHQ-gNu
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
Nagios Conference 2014 - Dave Williams - Multi-Tenant Nagios MonitoringNagios
Dave Williams presentation on Multi-Tenant Nagios Monitoring.
The presentation was given during the Nagios World Conference North America held Oct 13th - Oct 16th, 2014 in Saint Paul, MN. For more information on the conference (including photos and videos), visit: http://go.nagios.com/conference
CloudStack is one of many cloud orchestration platforms which can deliver IaaS clouds. One of the key capabilities of CloudStack is its ability to support multiple hypervisors in a CloudStack cloud. So whether your virtualization preference is VMware vSphere, KVM, Citrix XenServer or Linux Containers (LXC), you can build highly scalable clouds. While basic functionality is common across all hypervisors, many features are implemented differently on each. This paper presents the capabilities of CloudStack which can be enabled based on your hypervisor selection
Hvordan administrerer og bruker du din VDI-løsning best mulig? Hva kan Microsoft tilby av VDI-drift og hvordan benyttes det i praksis? Vi ser på hvordan bl.a. System Center kan benyttes i en VDI-løsning.
[Bind DNS + Zimbra + SpamAssassin] Antispam Installation GuideMạnh Nguyễn Văn
To configure our system, I used the following software:
- DNS server: Bind DNS.
- Email server: Zimbra Collaboration Suite open source edition.
- Anti-spam: SpamAssassin.
- Mail client: Zimbra
Archiving and e-Discovery for Novell GroupWiseNovell
With an increase in regulations and internal policies governing data retention, e-mail has come into the spotlight. In fact, securing and preserving e-mail data is more important than ever before. Attend this session to hear the perspective of a legal expert in e-mail archiving and e-Discovery. We'll also discuss the options available for addressing this need through our partners, many of whom have significant expertise in this area.
Best Practices for Deploying Enterprise Applications on UNIXNoel McKeown
Gain some insight to a UNIX based operating system and the types of tasks a build team or vendors perform. How to prepare a UNIX server for typical enterprise deployments.
The best practices applied to a UNIX platform in a telco environment. Some hints, tips, troubleshooting and practical knowledge.
Simplifying systems management with Dell OpenManage on 13G Dell PowerEdge ser...Principled Technologies
Automated systems management and additional connectivity solutions can reduce the number of administrators you need to run your datacenter or simply free up administrators to innovate rather than tying them up with routine management tasks. We found that the Dell OpenManage suite provides several new features for 13G Dell PowerEdge server solutions to streamline management tasks in both time and steps. Other new features let us easily connect to iDRAC right from the server. Updating firmware with Dell OpenManage features was also easier—eliminating 213 steps for updating a single server compared to updating manually.
The latest versions of the Dell OpenManage suite of system management tools and the power of iDRAC 8 contained within Dell 13G servers gives administrators increased flexibility and powerful new options for managing their data centers that translate to demonstrable savings in time and administrative effort. These automated enhancements and new technologies enable administrators to manage increasingly larger workloads while reducing the amount of hands-on work required for each system, bringing real value to systems management and datacenter operations.
At Microsoft’s annual developers conference, Microsoft Azure CTO Mark Russinovich disclosed major advances in Microsoft’s hyperscale deployment of Intel field programmable gate arrays (FPGAs). These advances have resulted in the industry’s fastest public cloud network, and new technology for acceleration of Deep Neural Networks (DNNs) that replicate “thinking” in a manner that’s conceptually similar to that of the human brain.
Watch the video: http://wp.me/p3RLHQ-gNu
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
Nagios Conference 2014 - Dave Williams - Multi-Tenant Nagios MonitoringNagios
Dave Williams presentation on Multi-Tenant Nagios Monitoring.
The presentation was given during the Nagios World Conference North America held Oct 13th - Oct 16th, 2014 in Saint Paul, MN. For more information on the conference (including photos and videos), visit: http://go.nagios.com/conference
CloudStack is one of many cloud orchestration platforms which can deliver IaaS clouds. One of the key capabilities of CloudStack is its ability to support multiple hypervisors in a CloudStack cloud. So whether your virtualization preference is VMware vSphere, KVM, Citrix XenServer or Linux Containers (LXC), you can build highly scalable clouds. While basic functionality is common across all hypervisors, many features are implemented differently on each. This paper presents the capabilities of CloudStack which can be enabled based on your hypervisor selection
Hvordan administrerer og bruker du din VDI-løsning best mulig? Hva kan Microsoft tilby av VDI-drift og hvordan benyttes det i praksis? Vi ser på hvordan bl.a. System Center kan benyttes i en VDI-løsning.
1. RESUME
E-mail: - mithunkumr@gmail.com
MITHUN KUMAR
Mobile: 9611165795
OBJECTIVE
Use my skills and knowledge of fault tolerant solutions for daily monitoring and maintenance of mission
critical production infrastructure. Aspiring for a Bright and a challenging career in the field of IT
Technology, Which would enable me to upgrade myself with emerging trends and technologies.
SUMMARY
• Work well under pressure either with minimal supervision or in a team
• Fantastic ability to learn new material quickly
• Involved as an active team member
• Linux System Administration skills (RedHat, Cent-OS and Fedora)
• Hands on knowledge in Server performance tuning & hardening
• Key skills include Linux performance tuning
• Exposure on bug tracking tool like Bugzilla
• Designs and builds forward thinking solutions that are scalable, durable and easy to maintain. Designs
and builds forward thinking solutions that are scalable, durable and easy to maintain
• Recognized expert in configuration management and contribute to the open source
• Good knowledge on SVN
• Installation and support of Apache web servers, RAID, LVM, NFS, SMTP, NAGIOS, FTP, MYSQL
Server, DNS, DHCP, SAMBA, SendMail and Windows to Linux interoperability and migration.
WORK EXPERIENCE *
Sun Technologies Pvt. Ltd.
Designation: - Cloud Operation Engineer (October ‘09/10/12 to
Present)
JOB RESPONSIBILITIES
• Coordinating with Offshore/Onshore people
• Working on VMware Virtualization ESX 4.1
• Handling JIRA and First Web ticket
• Installing, configuring and managing ESX Server
• Supporting for application Server HPOO, New Scale and confluence
2. • Monitored the Server’s resources by vFoglight
• Preparing (POA) plan of action’s for migration
• Maintaining of Linux VM Machines
• Configuring the FTP server to maintaining the shared folders in the Organization
• Creating users, group & assigning permission
• Creating ACL rule for users
• Managing and Recovering a Remote System through DRAC (Dell Remote Access Card)
• Troubleshooting & resolving issues through the VMware virtual center and Lab Manager
AdiQuity Technologies Pvt Ltd. (March ‘08 – 08/10/2012)
Designation: - Sr. Production Engineer
JOB RESPONSIBILITIES
• Maintaining the whole IT infrastructure consisting of a farm of Linux servers
• Monitoring and troubleshooting production issues using tools like NAGIOS and proprietary guruji
software’s
• Configure SMS with NAGIOS by Net Setter
• Design and maintain the whole infrastructure required by the application
• As a key member of the production team, migrated the entire guruji data center to a geographically
different location. The work consisted of planning the migration without disturbing the live traffic and
seamless switchover to the new facility. The entire task was completed in a small time window of 2 days
• Installing and maintaining DNS for our organization
• Handling ec2 amazon cloud
• Installing and maintaining tools like SAMBA, DHCP, NFS, FTP, CVS, Bugzilla, MYSQL, Apache,
Shorewall, NTP, Cfdisk
• Maintained Send Mail and SMTP Server (with SPF record and Domain Keys)
• Configure SSL on Send Mail
• Configure milter-greylist on Send Mail for SPAM.
• Maintaining the cloud (ec2).
• Configure and VM.
• Configure Auto Reply and Footer with Send Mail
• Maintaining some administrative (automatic) task by SHELL Script.
• Configure Sudoers for Production Team
• Migrated the OS installation process from manual to automatic using Cobbler
• Configure RAID
• Automated the administrative tasks like password changing, post installation configurations, setting up a
free user login
• Upgraded the entire guruji office network to a better infrastructure
• Configured and maintained Master/Slave on MYSQL with mail and SMS
• Designed and implemented backup procedures
• Negotiated with vendors in cases of hardware failures or software issues
• Besides systems administration, is the point of technical contact for the developers and office PC support
technician
3. • Installing and configuring RUN LEVELS
• Provided 24/7 on call availability by means of cell phone, instant messaging and e-mail
• Fantastic ability to learn new material quickly
• Disk Management, portioning tools like fdisk, sfdisk and cfdisk. File system management ext3 file system
& utilities (mke2f, e2fsck,tune2fs) LVM physical volumes and logical volume & volume groups
extending file systems LVM mount, unmount of file systems- /etc/fstab mount options.
V-Angelz Technology (June’07 – Feb ‘08)
Designation: - Linux Engineer
JOB RESPONSIBILITIES
• Installing and maintaining the Print Server, Samba, FTP, Dialer server, Chat Server, HTTP
• Installing and maintaining the Proxy with Shorewall and DansGuardian
• Installing and maintaining the Q-Mail and Send Mail
• Installing and maintaining the LDAP.
• Installing and maintaining the DNS
• Installing and maintaining the DHCP
• Monitoring the Remote Server by NAGIOS tool
• Responsible for maintain the IRON PORT
• End to end migration of the entire data centre
• Conducted research on proposed system upgrades and identified potential incompatibilities that led to
alternative system purchase
• Provided 24/7 on call availability by means of cell phone, instant messaging and e-mail
PROFESSIONAL QUALIFICATION
• REDHAT CERTIFIED ENGINEER training from NEW HORIZONS, Delhi
• RHCE, Certificate Number: 804006791022538
•
ACADEMIC QUALIFICATION
• Bachelor in Computer Application (BCA) from IGNOU
• Intermediate (10+2) in Science from Bihar Board.
• Matriculation from Bihar Board
TECHNICAL SKILL
Operating System : RHEL, Cent-OS, Fedora
Mail Server : Send Mail-Mail, Squirrel mail, Q-Mail
4. Other Linux Tool : NAGIOS, COBBLER, BACULA, WEBMIN, BUGZILLA
Sphinx, Puppet, SVN, FAI, DansGuardian, Sarg, Awstats,Splunk
Server : DNS, DHCP, FTP, IMAP, POP, NTP, NIS, NFS, SAMBA
Web Server- : Apache Web Server, NGINX
Language : Shell Script
Firewalls : TCP Wrapper, Internet blocking using Squid, Shorewall
Database : MYSQL
Hardware : IBM and Dell PowerEdge blades
Network Services : DNS/Bind, Samba, CIFS, NFS, TSM, LDAP, FTP, SSH, multipathd,
DHCP, TFTP, iSCSI.
Security Products : SELinux, Iptables, Tcpdump, Snort, IPtable, TCP Wrapper SSL
PERSONAL PROFILE
Name : Mithun Kumar
Date of Birth : 12/09/1981
Gender : Male
Nationality : Indian
Marital Status : Married
5. Other Linux Tool : NAGIOS, COBBLER, BACULA, WEBMIN, BUGZILLA
Sphinx, Puppet, SVN, FAI, DansGuardian, Sarg, Awstats,Splunk
Server : DNS, DHCP, FTP, IMAP, POP, NTP, NIS, NFS, SAMBA
Web Server- : Apache Web Server, NGINX
Language : Shell Script
Firewalls : TCP Wrapper, Internet blocking using Squid, Shorewall
Database : MYSQL
Hardware : IBM and Dell PowerEdge blades
Network Services : DNS/Bind, Samba, CIFS, NFS, TSM, LDAP, FTP, SSH, multipathd,
DHCP, TFTP, iSCSI.
Security Products : SELinux, Iptables, Tcpdump, Snort, IPtable, TCP Wrapper SSL
PERSONAL PROFILE
Name : Mithun Kumar
Date of Birth : 12/09/1981
Gender : Male
Nationality : Indian
Marital Status : Married
6. Other Linux Tool : NAGIOS, COBBLER, BACULA, WEBMIN, BUGZILLA
Sphinx, Puppet, SVN, FAI, DansGuardian, Sarg, Awstats,Splunk
Server : DNS, DHCP, FTP, IMAP, POP, NTP, NIS, NFS, SAMBA
Web Server- : Apache Web Server, NGINX
Language : Shell Script
Firewalls : TCP Wrapper, Internet blocking using Squid, Shorewall
Database : MYSQL
Hardware : IBM and Dell PowerEdge blades
Network Services : DNS/Bind, Samba, CIFS, NFS, TSM, LDAP, FTP, SSH, multipathd,
DHCP, TFTP, iSCSI.
Security Products : SELinux, Iptables, Tcpdump, Snort, IPtable, TCP Wrapper SSL
PERSONAL PROFILE
Name : Mithun Kumar
Date of Birth : 12/09/1981
Gender : Male
Nationality : Indian
Marital Status : Married