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Linux management and configuration

Puppet (configuration management)

Puppet is an open source systems management tool for centralizing and automating configuration management.
Optimize system performance with Linux cgroups

The Linux cgroups feature lets you make a profile to manage resources to keep your system under control.
Setting up a mirrored Linux DRBD configuration

Administrators can use the distributed replicated block device (DRBD) in Linux to set up basic data redundancy to connect the storage of multiple servers.
Tune the Linux Ext4 file system for optimal performance

While Ext4 by default works fine for most people, follow these tips to tweak your servers to squeeze out even more speed.

Linux management and configuration

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How do I schedule a cron job fortnightly?

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Can I use a Linux server for Internet sharing according to selected groups?

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How can we escape our scalability rut?

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What role does scalability play in system design?

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Is there a reliable rationale behind system hardening?

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How can I logout a remote X user cleanly?

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Load average issues

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Calculating block size

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'Raw' partitions

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