About the Role
Job description:
- Build and maintain Linux/AIX servers; apply CIS/hardening baselines and OS updates.
- Monitor system health (CPU, memory, I/O, filesystem) and investigate alerts.
- Execute patching and kernel updates within change windows; verify services post reboot.
- Troubleshoot authentication issues (SSSD/PAM/LDAP/Krb) and sudo policies.
- Operate backup agents and perform periodic data and system restore tests.
- Track EOL distributions/packages; plan upgrades or migrations with owners.
- Manage SSH keys, certificates, and secure configurations per policy.
- Diagnose performance issues (load averages, IOPS, network, swapping) and apply fixes.
- Maintain runbooks, asset metadata, and CMDB relationships for Linux/AIX hosts, VMs and LPARs.
- Coordinate with storage/network teams for multipath, bonding, and VLAN changes.
- Implement and tune monitoring checks/thresholds; reduce alert noise.
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