Role: RHEL System Administrator (Need Locals) Location: Columbus, OH Please share resumes to pgo AT THE RATE OF Comtech-global DOT COM Short Description: The candidate should be local to Columbus. Work is currently virtual, but the candidate may be expected to go to the William Green Building when needed and can be on site anytime in the future. Complete Description: The candidate should be local to Columbus. Work is currently virtual but the candidate my be expected to go to the William Green Building when needed and can be on site anytime in the future. Required: Minimum 5 years’ experience with Red Hat Enterprise Linux (RHEL) v6, V7.x and v8 in a datacenter environment Required areas of knowledge & experience: o Installation of RHEL7and 8 in a standalone and VMware environment o Stop, Start, restart, enable and disable running of software & system service daemons via systemd system and service manager o Installation, update, and inventory of software packages via rpm command o Shell scripting experience, e.g., bash for routine system administration tasks, creating reports o “yum” for patching and package installation from central repository o Cron/crontab for periodic scheduled jobs o Creation & management of filesystems and volumes using LVM, partitioning of disk devices o System performance analysis, system log analysis and system troubleshooting techniques o Logrotate for periodic rotation and compression or purge of older logs o Remediation of common Linux server issues such as filesystem nearly full, user cannot login, etc. o TCP/IP networking: Configuration, troubleshooting, use of tcpdump and Wireshark o Setup/configuration of network interfaces o Setup/configuration of typical networked services such as DNS, NTP, NFS, FTP, SFTP,SSH,Apache HTTPD,CIFS,SMB/Samba,syslog/rsyslog o Security hardening practices, including RHEL7’s firewalld o SSH authentication techniques (password, key-based) o Use of sudo, sudoers file, and “sudoers.d” directory o Grub configuration & setup to control Linux boot and system parameters at boot time o Troubleshooting all of the above • Excellent oral and written communication skills • Preparation of documentation for technical staff and management (technical procedures, description and diagramming of operational & network flow, performance reports, etc.) • Create periodic reports to document your job activities Knowledge/Experience a desired plus: • RHCSA (Red Hat Certified Systems Administrator – RHEL V7.x) • Red Hat Satellite V6.x used for administration of RHEL7 systems • Centrify Direct Control • HelpSystems GoAnywhere file transfer products/architecture • Familiarity with system tuning & setup requirements for Oracle RDBMS utilizing ASM disks • Familiarity with system tuning & setup requirements for Vertica database • MediaWiki for online documentation management • NMON/NMON Visualizer (collection & reporting of system performance information) • Postfix SMTP gateway • Microsoft Active Directory and LDAP (as a “client” of these services, not as an administrator under Windows) • Systems programming language (Python preferred, or Perl) • Management of SSL certificates for HTTPD/webserver • Microsoft SCOM agent on Linux • RHEL V6.x system administration • Simple HTML web page creation also forms pages with back-end scripting language (Python, Perl) to accept/sanitize/parse submitted form data.