WEBVTT 00:02.970 --> 00:08.760 When it comes to websites and web applications, many people use the term stack to describe the environment 00:08.760 --> 00:11.640 where these sites and apps are developed and served from. 00:12.180 --> 00:18.600 The typical web server stack consists of four parts and operating system, a web server, a database, 00:18.600 --> 00:20.100 and a scripting language. 00:20.740 --> 00:24.790 For many years, the primary web stack has been the lamp stack. 00:25.400 --> 00:28.190 In this case, Linux is the operating system. 00:28.190 --> 00:29.890 The Web server is Apache. 00:29.900 --> 00:36.890 The database component is my SQL or Maria DB, and the scripting language is either PHP, python or 00:36.890 --> 00:43.460 Perl, with PHP being the one most commonly referred to because the components of the web stack can 00:43.460 --> 00:47.750 be swapped out using jinks for the web server leads to the lunch stack. 00:48.350 --> 00:51.020 The other components remain the same. 00:51.530 --> 00:57.710 In this case, Jenks is represented by the letter E for the Sound of the Jinx name rather than its spelling. 00:58.250 --> 01:05.090 Now let's take a look at getting configured to run dynamic applications with Jinx, Maria, DB and PHP. 01:06.090 --> 01:07.860 To get started with our lymph stack. 01:07.860 --> 01:11.670 I'm already connected to our development team with Jinx installed. 01:12.260 --> 01:17.120 Now let's install PHP, also known as the hypertext preprocessor. 01:18.150 --> 01:23.010 PHP is a general purpose scripting language especially suited to web development. 01:23.580 --> 01:27.270 You can learn more about PHP at PHP dot net. 01:27.810 --> 01:32.760 We'll be working as the route user, so we need to elevate our session with pseudo su dash. 01:33.360 --> 01:38.130 Now we can run apt update to make sure the package repositories are up to date. 01:38.700 --> 01:41.820 And now we can install the PHP packages. 01:42.360 --> 01:47.220 We'll do this with APT, install php, FPM and php mysql. 01:47.790 --> 01:54.330 This will install the PHP fast process manager and any other packages we need for a PHP. 01:54.840 --> 02:01.740 The fast CGI process manager is a service that will process any PHP files received by the web server. 02:02.370 --> 02:03.360 And a PHP. 02:03.360 --> 02:09.090 MySQL package is a package that allows PHP to connect to a MySQL database. 02:09.660 --> 02:15.390 Once the installation is complete, we can check the version of PHP that got installed by running PHP 02:15.390 --> 02:16.140 version. 02:16.710 --> 02:20.760 In this case we'll be using PHP 7.2.5. 02:21.300 --> 02:25.410 Now let's check the PHP fast CGI Process manager. 02:25.990 --> 02:31.330 This gets installed as a service and we can make sure it's up and running with system CTL. 02:31.900 --> 02:33.790 Four php fast cgi. 02:33.820 --> 02:37.510 The name of the service is PHP 7.2 fpm. 02:38.080 --> 02:38.650 Great. 02:38.650 --> 02:42.580 This output tells us that PHP FPM is up and running. 02:43.150 --> 02:48.760 At this point we're ready to configure Jinx so that it can communicate with the PHP service. 02:49.330 --> 02:52.420 So let's edit our conf file for our site. 02:52.960 --> 02:58.810 In the conf file we need to add a location with a case sensitive regular expression that matches URI 02:58.960 --> 03:00.670 ending in PHP. 03:01.180 --> 03:06.880 Next, we'll use the include directive to bring in some code that's stored outside of our config file. 03:07.420 --> 03:14.740 The fast php conf file contains helpful directives that improve the security and efficiency of the site. 03:15.310 --> 03:18.940 Now let's add a fast CGI underscore pass directive. 03:19.450 --> 03:24.900 This directive tells Jinks to use a unique socket to communicate with php fpm. 03:25.480 --> 03:31.690 Communicating through a socket keeps the transfers between jinks and PHP on the local system much faster 03:31.690 --> 03:34.390 than communicating via a TCP port. 03:34.960 --> 03:37.450 We can also add one more directive. 03:38.080 --> 03:38.540 Fast. 03:38.560 --> 03:42.970 CGI underscore, intercept, underscore errors and then add the keyword on. 03:43.480 --> 03:50.470 This tells Jinks that if any errors are returned by the fast CGI server in this case FPM, that jinks 03:50.470 --> 03:53.640 should try to process that error with an error page directive. 03:53.650 --> 04:01.690 If possible, Jinks will consider errors from the fast CGI process as 500 errors, so these will be 04:01.690 --> 04:05.440 handled by our custom 50 x HTML page. 04:05.980 --> 04:09.400 Now let's save the file and test our configuration. 04:09.980 --> 04:11.300 Everything looks good there. 04:11.300 --> 04:14.420 So let's go ahead and reload the configuration. 04:14.930 --> 04:18.710 Now, the only thing we need is some PHP content. 04:19.250 --> 04:24.080 Let's create a PHP info page in the root directory of the demo site. 04:24.650 --> 04:30.590 In this file we'll put some PHP code that will return details about our PHP installation. 04:31.070 --> 04:37.730 These commands will provide details on our PHP installation served as a dynamically generated web page. 04:38.350 --> 04:44.080 I should add that making the PHP info function output available on a web page should only be used for 04:44.080 --> 04:46.150 development and never in production. 04:46.660 --> 04:52.210 The details on the page might give a hacker or otherwise nosy visitor to our site more information about 04:52.210 --> 04:55.450 our site than they need, making it a target for attack. 04:56.070 --> 05:00.240 Now we can go to the browser and test the info page on our demo site. 05:00.780 --> 05:06.660 Now enter 192.168.0.3, which is the IP address for our site. 05:07.200 --> 05:09.630 And then info dot php. 05:10.170 --> 05:11.160 Nice. 05:11.780 --> 05:18.080 Seeing our info page confirms that we have php FPM installed and jinks configured to use it for processing 05:18.080 --> 05:19.940 web pages with PHP. 05:20.480 --> 05:25.680 Let's wrap up the session here and move on to installing the database server for our limp stack. 05:25.700 --> 05:26.990 Maria db.