Log rotation in Nginx - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the log file path in the nginx configuration.

Nginx

access_log [1];

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A/var/log/nginx/access.log

B/etc/nginx/nginx.conf

C/tmp/nginx.log

D/usr/share/nginx/html

Attempts:

3 left

💡 Hint

Common Mistakes

Using the configuration file path instead of the log file path.

Using a directory path instead of a file path.

The access_log directive requires the full path to the log file, commonly /var/log/nginx/access.log.

2fill in blank

medium

Complete the command to reload nginx after log rotation.

Nginx

sudo systemctl [1] nginx

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Areload

Bstop

Crestart

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using stop or restart causes downtime.

Using status does not reload configuration.

The reload command tells nginx to reload its configuration and reopen log files without stopping the service.

3fill in blank

hard

Fix the error in the logrotate configuration snippet for nginx logs.

Nginx

/var/log/nginx/*.log {
    daily
    missingok
    rotate [1]
    compress
    delaycompress
    notifempty
    create 0640 www-data adm
    sharedscripts
    postrotate
        /bin/systemctl reload nginx > /dev/null 2>&1 || true
    endscript
}

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A5

Breload

Crestart

D7

Attempts:

3 left

💡 Hint

Common Mistakes

Using commands like reload or restart instead of a number.

Omitting the rotate count.

The rotate directive expects a number indicating how many rotated logs to keep, e.g., 7.

4fill in blank

hard

Fill both blanks to complete the logrotate postrotate script for nginx.

Nginx

/var/log/nginx/*.log {
    postrotate
        [1] nginx [2] > /dev/null 2>&1 || true
    endscript
}

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Ainvoke-rc.d

Breload

Crestart

Dservice

Attempts:

3 left

💡 Hint

Common Mistakes

Using restart causes downtime.

Using service instead of invoke-rc.d in some systems.

The invoke-rc.d command is used to call service scripts, and reload tells nginx to reload logs without downtime.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps log file names to their sizes if size is greater than 0.

Nginx

log_sizes = [1]: [2] for [1] in [3] if os.path.getsize([1]) > 0

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Alog

Bos.path.getsize(log)

Clogs

Dfile

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names inconsistently.

Not filtering files with size > 0.

This comprehension creates a dictionary where keys are log file names and values are their sizes, filtering only files larger than zero bytes.