Linux System Administrator Resume CO - Hire IT People

SUMMARY

Linux System Administrator with 5 years of experience administrating, monitoring, and managing RHEL, Ubuntu, and CentOS; Experienced in mission - critical production environment
Ability to adapt and accomplish creative and standard or non-standard solutions
Excellent communication, and technical training skills; Strong desire to organize, learn and standardize for efficient operation of user environment.
Strong Experience in Troubleshooting OS and Performance related problems.
Good experienced in TCP/IP, LAN/SAN, FTP, NFS, PXE Server, Open Source packages such as Samba and Sendmail, DNS, Bind, Apache, LVM, OpenLDAP.

TECHNICAL SKILLS

Operating System: RHEL/CentOS 6.x and 7.x. Windows 2012, Windows 2012R2
Networking: SAMBA, TCP/IP, DHCP, Cisco Wireless controllers and access points, Cisco AnyConnect VPN, Routers, SSH,FTP, LAN/WAN, VLAN, Netstat, Telnet, Wireshark
Servers: NTP, Chrony, Apache, Mail Server (Postfix and Dovecot),Nagios, DNS master & slave, DHCP, LDAP, Database(Mysql, MariaDB), LAMP Stack, NFS, Samba, and FTP.
Scripting language: basic Bash Shell, Python.
DevOPS Tools: Jira, iTOP, Ansible, GIT, Docker containers, Kubernetes, Jenkins.
Installation and Configuration: Ansible, DHCP, PXE/Kickstart, Wiki,Wordpress, Nagios server and client configuration, LDAP with PHPLDAPadmin, MySQL and PHPmyAdmin, Postfix and Dovecot with Web Mail. Middleware knowledge Java, .net.
Hardware: HPE ProLiant DL360 G6 Server. Dell C6100 CPU, Dell PowerEdge 2950, Dell PowerEdge 300 s and 400 s series.
Storage administration: Software and hardware RAID arrays, SAN, NAS.
Database: MySQL, MariaDB
Monitoring: Nagios system monitoring.
Security and Troubleshooting utilities: Wireshark, ping, tcpdump, telnet, netstat, netcat, nmapiptables, tcp wrappers and selinux, Symantec antivirus.

PROFESSIONAL EXPERIENCE

Confidential, CO

Linux System Administrator

Responsibilities:

Administered over numerous Linux physical and virtual servers, this included installing new software, validating that the software was correctly installed and configured on the correct machines.
Setup and Maintain DNS, DHCP, LDAP, Web Servers (Apache), NFS, FTP and Samba for File Sharing on Red Hat Linux servers.
Patching Linux Servers every 3 months. Automated installation and configuration of Linux servers and applications in Ansible.
Scheduling, used tools such as Cron, set up collaborative directories (sgid/ stickybit/ setfacl), NFS/Autofs.
Security hardening included ssl/https, selinux contexts and ports, password protected directorieshome web directory access, virtual hosts, etc. Creating and installing new servers using PXE Server, Kickstart.
Managing servers using Ansible Configuration Management tool.

Confidential

Linux System Administrator

Responsibilities:

Installation of operating system security patches using YUM and RPM.
User account management
Installation/configuration of backup agent software, rsync,gzip, etc
Log review & analysis
Troubleshooting/resolving operating system functions and performance issues
File and directory permissions management
Scheduling cron jobs
Extending of disk volume sizes
Working with Oracle DBA personnel to resolve problems that overlap the operating system and database environments