Linux Administrator
innovitusa
We are looking for an experienced Linux Administrator to manage, maintain, secure, and troubleshoot enterprise Linux server environments. The ideal candidate should have strong hands-on experience with RHEL, CentOS, Ubuntu , system administration, patching, storage, networking, monitoring, security, and automation.
Key Responsibilities
- Install, configure, administer, and maintain Linux servers including RHEL, CentOS, Ubuntu, and SUSE.
- Perform OS upgrades, patch management, vulnerability remediation, and system hardening .
- Manage Linux users, groups, permissions, sudo access, SSH, processes, and services.
- Manage file systems, partitions, LVM, disk utilization, NFS, and storage mounts .
- Monitor server availability, performance, capacity, CPU, memory, disk, and network utilization.
- Troubleshoot Linux OS, application, storage, networking, and authentication issues.
- Configure and manage services including SSH, DNS, DHCP, NFS, FTP, Apache, Nginx, and Tomcat .
- Perform root cause analysis (RCA) for production incidents and resolve issues within defined SLAs.
- Manage package installation and updates using YUM, DNF, and APT .
- Develop and maintain Shell/Bash scripts to automate routine administrative tasks.
- Use Ansible for configuration management, patching, provisioning, and automation.
- Support backup, restore, disaster recovery , and high-availability activities.
- Configure and troubleshoot Linux networking, including TCP/IP, DNS, routing, firewalls, and connectivity.
- Implement security controls including SELinux, firewalld, SSH hardening, access controls, and vulnerability remediation .
- Work with monitoring and logging tools such as Nagios, Zabbix, Grafana, Prometheus , or similar platforms.
- Support Linux environments running on VMware, cloud platforms, and virtual infrastructure .
- Participate in incident, problem, change, and release management processes.
- Maintain SOPs, runbooks, configuration documentation, and technical procedures .
Required Skills
- 4+ years of hands-on Linux System Administration experience.
- Strong experience with RHEL / Red Hat Linux administration.
- Good knowledge of CentOS, Ubuntu, and/or SUSE Linux .
- Strong knowledge of Linux file systems, LVM, partitions, permissions, processes, and services .
- Experience with Shell/Bash scripting .
- Hands-on experience with Ansible .
- Strong understanding of DNS, DHCP, TCP/IP, SSH, NFS, and networking fundamentals .
- Experience with YUM/DNF/APT package management .
- Knowledge of SELinux, firewalld, systemd, cron, and log management .
- Experience with Linux patching, upgrades, hardening, and vulnerability remediation .
- Strong troubleshooting and root-cause-analysis skills.
- Experience supporting production environments and enterprise infrastructure .
Preferred Skills
- RHCSA / RHCE certification.
- Experience with VMware vSphere/ESXi .
- Experience with AWS, Azure, or GCP Linux workloads .
- Knowledge of Docker and Kubernetes .
- Experience with Apache, Nginx, Tomcat, or JBoss .
- Knowledge of Pacemaker/Corosync and Linux clustering .
- Experience with SAN/NAS, RAID, backup, and disaster recovery .
- Exposure to Terraform, Jenkins, Git, or CI/CD .
- ITIL/production support experience.
Vacancy posted 4 hours ago
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