PROFILE Unix/Linux Administrator

TECHNICAL SKILLS

• Operating Systems: Redhat Enterprise Linux, Solaris 10, Ubuntu, Centos and Window Server 2008/Active Directory
• Software Applications: Net Back-Up, Cluster, Servers, Patch Management, AIX, VERITAS, Software Configuration, Performance User, System, Files Security Administration
• Hardware: HP, DELL, Lenovo, IBM, HP servers, HP printers, Sun micro system
• Protocols: HTTP, POP, FTP, DNS, NFS
• Network: nslookup, dig, ping, ifconfig, netstat, tcpdump, tcpwrappers
• Language: French and English

SKILL

• Performing Daily System Administration perform job management, system and process monitoring/management, mounting devices, work with links, create backups, manage printers, and set up system/rsyslog loggings.
• Users and groups administration creating users and groups, assign user and group permissions, manage passwords, manage user and group passwords
• Authentication Using External Authentication active directory LDAP with winbind,

Managing Permissions

Basic Permissions: read, write, and execute, access control lists setting default permissions with umask attributes

SELinux

Working with selinux context types configuring selinux policies semanage working with selinux modules setting up selinux with system-config-selinux troubleshooting selinux.

Firewalls

• Setting up firewall with ip tables, allow or deny services, masquerading
• Networking Network configuration and management, openLDAP, managing users and groups with LDAP, DNS and DHCP configurations
• File Sharing NFS4, Samba, NFS, SFTP
• File systems ext2/3, ext4, OCFS, GFS
• Other Apache, MySQL, DNS, shell scripting, RAIDS, systems update, hard disk error troubleshoot, systems troubleshoot, and network troubleshoot

EMPLOYMENT EXPERIENCE

Confidential

Linux/unix systems administrator

• Support and trouble-shoot issues involving Switched Digital Video, Linear Channels and Video on Demand on Systems utilizing DNCS and DAC Servers running on solaris
• Support Set Tops and Hospitality Video and Video on Demand Services for Commercial Premises. Aiming to improve the resolution time to outages and issues with preventative maintenance.
• Documenting the procedures for DNCS Operations to assist the Support and Implementation Engineers. Met all performance goals to date.
• Administered Solaris/Red Hat Systems DNCS, DAC, MAS, and BMS. Managed backups and monitored CPU and Disk Usage.
• Ensured the technical analysts addressed and resolved any Big Brother and Xymon Alerts for DNCS and Mystro Server connectivity and hardware faults.
• Resolved any loss of Two-Way Connectivity between the Set Tops and the Head Ends by analyzing the non-responder reports from the DNCS.
• Diagnosed Linear Video and Video on Demand outages. Succeeded in decreasing the resolution time on outages by engaging vendors and working with local Head End technicians.
• File system tuning, growing, and shrinking with SVM and LVM.
• Installed, configured, and managed proprietary applications on Unix/Linux servers.
• Deployed and maintained new applications. Supported Red Hat and Solaris infrastructures in a highly collaborative environment focused on customer satisfaction and effective time management.

Confidential

Redhat systems administrator

• Performed daily user administration including user account creation, password and age settings, user security hardening with SElinux modules, read/write/execute permissions and user attributes
• I performed group management such as adding group members, assigning group administrators on groups when necessary, and also group passwords.
• I also was responsible for the daily troubleshooting of the linux/Unix servers from issues like boot failures related to the kernel, or other problems resulting from the boot partition
• Also, I set up an nfs , dns, and ftp servers that were used as local shares for accessing the kick-start/jumpstart files for the installation of other NIX servers, and also for other storage and file sharing purposes
• Furthermore, I was responsible for troubleshooting and maintaining the network with network tools such as the nmap, ping, ifconfig, etc.
• I performed system hardening by assigning SElinux mods, context and Boolean on network ports, files, folders and applications
• I also used iptables settings to control access in, out or through the server to maintain a security
• Assisted daily with the apache web server such as configuration, enhancing security and encryption with SElinux, and SSL modules.
• I performed disk management such as disk quota management, disk space management including adding new physical disk, creating volume groups, adding or increasing logical volumes and expanding the file system when necessary
• Created encrypted volumes with cryptsetup Luks for sensitive data storage
• I performed daily system backups and data compression with tar
• Furthermore, performed systems update including the kernel and other patch ups
• I also was responsible for the installation of any other applications with the yum repository or rpm when necessary
• Also, I performed systems monitoring, with tool like top, free, tail f on syslogs, etc., so as to maintain a proper systems resource management, and also track down and troubleshoot any errors related to systems performance or security

Confidential

UNIX / redhat Systems Administrator

• Provided enterprise support as a UNIX Systems Administrator
• Administered user accounts and password
• Manage File Systems on Solaris 9, 10 and 11 and Red hat Linux 6
• Configure and implement hardware RAID storage
• Utilize kick start and ignite for systems builds and recovery.
• Jumpstart Solaris servers, custom configure, install packages, patches, and harden. Creating LDOMs, installing Solaris, creating volumes, and installing packages.
• Install and implement new patches to the Solaris/Linux operating system software
• Maintain system accounting files, application logs and error log files
• Installing and configuring Apache and Weblogic and supporting them on Linux/UNIX production servers.
• Experience with Solaris Zones, Role Based Access Control and Systems Security Administration
• Responsible for performance monitoring and tuning using top, iostat, vmstat, sar for performance.
• Setup and configure network TCP/IP on UNIX including RPC connectivity for NFS. Create mount points for Server directories, and mounted these directories on UNIX Servers.
• Experience in using various network protocols like HTTP, UDP, POP, FTP, TCP/IP, and SMTP.
• Helped to establish standards, policies and procedures for all aspects of UNIX server environment e.g., configuration, administration, documentation, etc.
• Created and assigned file attributes permissions, defined network protocols and insuring TCP/IP and router connectivity

Confidential

Linux systems administrator

• Created new user accounts for students and instructors also assigned and managed group policies for them
• Configure a kick start environment for Linux systems
• Performed data backup to prevent future loss data on both windows and linux systems
• Performed systems administration, as well as troubleshooting and repair for hardware and software on Windows and Linux systems.
• Performed Linux user authentication with windows active directory
• Installed and configure BIND to set up the DNS server in Linux
• Created 2 domain controllers, a print server, and organizational units OU to manage network resources
• Created an inventory of all the hardware and software
• Trained 3 individuals to take over networking, systems administration, and repair responsibilities
• Used active directory to create 2 domain controllers, organizational units, user accounts and a print server