Sr. Linux Admin

Location:  Tulsa, OK or Remote

Responsibilities

• Server maintenance: execute procedures (e.g. patching)

• Review reports (e.g. vulnerability reports, access logs)

• 1st Level support

• Incidents

• Troubleshooting

• Server builds

Must Haves

• Linux Administration (preferred RedHat flavored Linux distributions: Red Hat, CentOS, CentOS Streams, Fedora)

• Local user and group management

• Local firewall configuration (firewalld, iptables)

• Service Management with systemd

• Authentication with pam

• Domain integration: sssd, realmd

• Network configuration: check network settings, configure dhcp and static ip

• Package Management with yum/dnf

• Logging: Familiar with most important system log files, system journal (journalctl), log rotate

• Storage Management: LVM2, local storage, san storage (multipath configuration), file systems (XFS, ext4)

• File Transfer with vsftpd (ftp, ftps), openssh (sftp), rsync (rsync over ssh); use clients on cli to test connections (lftp, curl, rsync)

• SELinux: Enable, disable, check for denials, configure

• Troubleshooting

• Authentication/authorization issues: check log files, check local user accounts, check domain accounts

• Permission issues

• Networking issues: familiar with ping, nslookup/dig, nmap

• SELinux

Nice to Have

• SSL Certificates

• basics: base64 encode certs, java keystores (jks, pkcs12),

• check certificates by URL and files: (openssl, keystore)

• VMware

• Login to server over VMware console

• Extend resources: cpu, ram, storage

• Add rescue boot iso and boot server in rescue mode

• Configuration Management

• Version Control (preferably git)

• Ansible

• Puppet

• YAML

• Scripting

• Shell scripting

• Python

• Ruby