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🔅 The Excel Bootcamp: Zero to Mastery ⏲ 20 hours 📁 163 Lessons

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🎙 Taught by: Travis Cuzick 🌟 ZTM Link

❓Question: How does the inodes control mechanism work in Linux file systems? ✅Answer: Inodes are a data structure in the file system that stores metainformation about a file (access rights, size, location on disk, etc.). 1️⃣Number of inodes: The file system creates a fixed number of inodes when formatting. If inodes run out, it is impossible to create new files, even if there is free space on the disk. 2️⃣Checking inodes: The df -i command allows you to find out the number of used and available inodes. 3️⃣Increasing inodes: To change their number, you need to recreate the file system with the -i flag, which specifies the size of the inodes. For example:

mkfs.ext4 -i 2048 /dev/sdX

How to configure rsyslog to create compressed logs. Preparation 1️⃣Make sure rsyslog is installed:

sudo apt install rsyslog

Most distributions have rsyslog installed by default. 2️⃣Install the gzip utility: It is used for compression.

sudo apt install gzip

Configuration 1️⃣Adding the omprog module Open the rsyslog configuration file:

sudo nano /etc/rsyslog.conf

Add a line to load the omprog module if it is not there yet: module(load="omprog") 2️⃣Creating a compression script Create a script that will receive logs and compress them:

sudo nano /usr/local/bin/compress_logs.sh

Paste the following code:

#!/bin/bash
while read line; do
echo "$line" | gzip >> /var/log/compressed_logs.gz
done

Make the script executable:

sudo chmod +x /usr/local/bin/compress_logs.sh

3️⃣Configuring rsyslog to use the script Add rules to the rsyslog configuration to pass logs to the script:

action(type="omprog" binary="/usr/local/bin/compress_logs.sh")

4️⃣Configuring log rotation Update /etc/logrotate.conf or create a separate file, for example:

sudo nano /etc/logrotate.d/compressed_logs

Add rotation parameters:

/var/log/compressed_logs.gz {
daily
rotate 7
compress
missingok
notifempty
}

Applying changes After configuration, restart the service rsyslog:

sudo systemctl restart rsyslog

Test Send a test message to the log: logger "This is a test message to check log compression." Ensure that the logs are compressed and written to /var/log/compressed_logs.gz: zcat /var/log/compressed_logs.gz

💰 Calculating GPU memory for serving LLMs

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