Where Is The “Welcome to Nginx!” Page Stored in a Docker Container?

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Problem scenario
You installed Nginx in a Docker container on a RedHat Linux server.  You go to this container with a web browser and see the default screen.  Where is the default file (on the back-end) that users see from the front-end by default that says “Welcome to nginx!”?

Solution
This is the name and location of the file (assuming the Docker container was created via the public repository):

/usr/share/nginx/html/index.html

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Which Log File Shows a Record of Web Traffic on an Nginx Web Server Running on a Linux?

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Problem scenario
You configured Nginx on a Linux server. You want to see if there has been activity on the website (e.g., via a web browser). What log file, visible on the back-end, has records of web browsing activity?

Solution
It is often here: /var/log/nginx/access.log

For general Nginx purposes, the nginx.conf file specifies the location of the Nginx logs and the names of the log files themselves.

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How Do You Install Composer on Debian/Ubuntu Linux?

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Problem scenario
You want to install Composer (a dependency manager for PHP) on your Debian/Ubuntu Linux server. What do you do?

Solution

  1. Run these commands:

sudo apt -y update
sudo apt -y install php-cli unzip
cd ~
sudo curl -sS https://getcomposer.org/installer -o composer-setup.php
HASH=curl -sS https://composer.github.io/installer.sig
echo $HASH
php -r “if (hash_file(‘SHA384’,

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How Do You Troubleshoot a Docker Container Supporting a Web Service That Web Browsers Cannot Seem to Reach?

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Problem scenario
You have configured a Docker container with a web service (e.g., Apache web server or Nginx).  You configured the listening, external port to be 80 or a different port number.  You find the web server (either Apache or Nginx) is not working from a web browser.  How do you find what is wrong?

Solution
#1  Use nmap to test the port and IP address. 

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How Do You Get Apache Web Server Configuration File Changes To Take Effect without Interrupting the Service?

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Problem scenario
You want to change the main configuration file for Apache web server (e.g., httpd.conf). But you do not want to drop current web surfers viewing the website. How do you change a security module or listening port for an Apache web server and have the changes take effect without interrupting the service by doing a regular restart?

Solution
Use the “graceful” directive.

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How Do You Use the least_conn Directive in an Nginx Configuration File?

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Problem scenario
You have configured Nginx to be an HTTP load balancer (a web server configured to behave as a landing portal that enables traffic to pass through).  As a reverse proxy with built-in keywords you have use the “least_conn” directive, but it does not seem to be working.  You want inbound network connection requests from your users via web browsers to be relayed to the web servers with the fewest (or least) amount of active connections. 

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How Do You Create a Jenkins CI/CD Pipeline That Starts when Code is Checked into Atlassian Bitbucket?

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Problem scenario
 To trigger a Jenkins build after code is inserted into a Bitbucket repository, I have two options. I can use a Bitbucket plugin in Jenkins and do the configuration there. Or I can create a webhook in Bitbucket.

I tried both with a great deal of troubleshooting. But neither worked, and there was no error message. I found nothing in the logs. The triggering event clearly happened.

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How Do You Take a Partial Back Up of Your Weebly Website?

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Problem scenario
You have a Weebly website. You want a partial back-end back up of your website. What should you do?

Solution
1. Go to your Weebly Editor.
2. At the top, go to “Settings”
3. Scroll down to “Archive”
4. Enter your email address and click “Email Archive”
5. The email with have a link to download a portion of the website.

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