Description
This training is based on a set of real situations, it offers you an approach and technical knowledge to identify the causes of problems encountered on your Linux servers and resolve them effectively.
Who is this training for ?
For whom ?System administrators, system engineers.
Prerequisites
Training objectives
Training program
- Install packages, patches and updates
- Yum configuration, Plug-ins overview.
- Manipulating the Yum cache.
- Upgrading a system.
- Package repository and local mirror.
- Deployment of patches.
- Practical work Configuring a package repository/repository.
- Search of packages and dependency resolution.
- Troubleshoot startup problems
- Bootloader.
- Kernel and initial ramdisk.
- The root-filesystem and its directories.
- /dev and devices .
- Take control of a system that does not boot.
- Forgotten password: what solutions? Practical work Representation of various computer problems booting and connecting to the system.
- Take control using a Disaster Recovery solution.
- Diagnose network problems
- Identify interfaces and check their settings.
- Routes, routing and host accessibility.
- Link, routing, naming problems.
- Hands-on work Full configuration of addressing, routing and name resolution elements to be able to diagnose potential problems at each level.
- Fix disk space and filesystem problems
- Boot-sector, MBR and partition table.
- Check the integrity of a file system.
- Repair a corrupted file system.
- System backups and disk images.
- Practical work Integrity check and extension of file systems after saturation.
- Detect bottlenecks and calibrate the system
- Monitor memory and swap usage.
- I/O and disk performance.
- Priority management and CPU load.
- Important kernel parameters.
- Performance analysis tools.
- Hands-on Locate bottlenecks.
- Provoke a system crash due to memory saturation.
- Logs and alert reporting
- Read and understand error messages.
- Centralize system logs and report alerts.
- Practical work Setting up a system raising alerts.
- Consider Cluster-HA
- High availability and fault tolerance.
- High availability mechanisms in Linux.
