R2 Linux shell scripting

Key Responsibilities:

1. Shell Scripting & Automation:

• Develop, test, and maintain Linux shell scripts to automate routine system administration tasks (e.g., log management, file backup, system monitoring).
• Write scripts to integrate with various system monitoring tools and automated workflows.
• Automate server and network configurations, software installations, and environment setups using shell scripting.
• Implement batch job automation for scheduled tasks, alerts, and system events.

1. Linux Systems Administration:

• Monitor and ensure the health and performance of Linux servers, ensuring uptime and optimal performance.
• Manage user accounts, file systems, and permissions, ensuring that all systems are secure and compliant with organizational standards.
• Troubleshoot, diagnose, and resolve Linux-related issues involving the operating system, networking, and application failures.
• Ensure that systems are properly configured to handle backup and recovery processes, and that automated systems are running correctly.

1. System Monitoring & Alerts:

• Write scripts to monitor system resources such as CPU, memory, disk space, and network usage, sending alerts when thresholds are exceeded.
• Integrate log aggregation and monitoring tools such as Syslog, Nagios, or Prometheus to generate proactive alerts and reports.
• Develop scripts to capture system metrics and generate automated reports for periodic review.

1. Configuration Management:

• Collaborate with configuration management tools (e.g., Ansible, Puppet, Chef) to automate server configuration and ensure consistency across all Linux environments.
• Implement configuration management practices for provisioning new servers, ensuring uniformity in setups across environments.

1. Performance Tuning:

• Optimize system performance by writing scripts for continuous performance evaluation and identifying areas for improvement.
• Troubleshoot system performance issues related to CPU, memory, disk, and network, and automate resolutions.

1. Backup and Recovery:

• Develop and automate scripts for backup operations (full and incremental backups) for data and configurations.
• Implement disaster recovery procedures using automated tools and scripts.

1. Security & Compliance:

• Implement security patches and updates to Linux systems using shell scripts, ensuring system security and compliance with organizational policies.
• Automate the management of user accounts, access permissions, and system security audits.
• Help in setting up and managing security tools such as firewalls, anti-virus, and intrusion detection systems using automation scripts.

1. Collaboration & Documentation:

• Work with cross-functional teams to understand infrastructure requirements and create corresponding automation scripts.
• Maintain documentation for all automated scripts, including their function, configuration, and usage.
• Provide technical guidance and training to junior team members on shell scripting and automation best practices.

Skills and Qualifications:

Mandatory Skills:

• Strong experience in Linux systems administration (Ubuntu, CentOS, RHEL, or similar).
• Proficiency in Shell Scripting (Bash, sh, ksh, etc.) with the ability to create scripts for automation, monitoring, and maintenance tasks.
• Deep understanding of Linux file systems, networking, security protocols, and services (e.g., SSH, SFTP, HTTP, NFS, Samba).
• Experience with system monitoring tools (e.g., Nagios, Zabbix, Prometheus, Syslog).
• Familiarity with text processing tools such as awk, sed, grep, cut, and regular expressions.
• Experience in creating cron jobs for task scheduling and automation.
• Knowledge of basic networking concepts like TCP/IP, DNS, DHCP, etc.
• Solid understanding of user and group management, and file permissions in Linux environments.
• Version control experience using Git