Instalirajte Caddy web poslužitelj iz izvora za usklađenost s licencom na Ubuntu 16.04 LTS

U rujnu 2017. Caddy EULA je promijenjen i sve Caddy instance koje vode tvrtke i osobne web stranice koje obavljaju trgovinu zahtijevaju komercijalnu licencu za Caddy preuzetu binarnu datoteku. Ovaj vodič pomaže korisnicima koji žele instalirati Caddy web poslužitelj u skladu s novom EULA. U vrijeme pisanja, pri kompajliranju Caddyja iz izvora i stvaranju vlastitog binarnog programa, plaćena licenca nije potrebna bez obzira na to jeste li tvrtka ili obavljate trgovinu na svojoj osobnoj web stranici. Važno je pregledati najnoviju EULA za usklađenost prije nego što slijedite korake u ovom vodiču.

Značajke:

• Kratka, lako razumljiva konfiguracija
• Izgrađen s Go
• Proširivo evidentiranje
• Izuzetno brza isporuka statične datoteke
• Podrška za dinamičke stranice i proxy
• Interna provjera konfiguracije
• Statički binarni
• Prema zadanim postavkama koristi Mozilline preporučene moderne šifre
• MITM (čovjek u sredini) otkrivanje
• SNI (indikator imena poslužitelja) podrška
• Automatsko generiranje/dohvaćanje/obnova certifikata Let's Encrypt
• OCSP podrška
• Podrška za virtualne hostove
• Podrška za renderiranje Markdown2html
• Ugrađena podrška za HTTP/2, QUIC i Websocket
• Podrška za uravnoteženje opterećenja, obrnuti proxying i SSL terminaciju

Preduvjeti

• Ubuntu 16.04 LTS instanca
• Sudo korisnika
• Golang verzija veća od 1.8+

Ažuriranje sustava

Prijavite se kao obični korisnik koji ima dopuštenje za korištenje naredbe sudo. Ažurirajte sustav na sljedeći način.

sudo apt update && sudo apt upgrade -y && sudo apt autoremove -y

Instalirajte Caddy iz izvora

Preuzmite najnoviju verziju izvornog koda Caddy web poslužitelja. Ovo ne sadrži dodatke treće strane za Caddy.

go get -u github.com/mholt/caddy/caddy && go get -u github.com/caddyserver/builds && cd go/src/github.com/mholt/caddy/caddy

Izborno: ako vam je potreban tls.dns.vultrdodatak dnsproviders treće strane , kopirajte sljedeće. Ovo će preuzeti i izvorni kod Caddyja i tls.dns.vultrdodatak dnsproviders treće strane ako ga želite koristiti.

go get -u github.com/mholt/caddy/caddy && go get -u github.com/caddyserver/builds && go get -u github.com/caddyserver/dnsproviders/vultr && cd go/src/github.com/mholt/caddy/caddy && sed -i '38i\\t_ "github.com/caddyserver/dnsproviders/vultr"' caddymain/run.go

Sastavite caddybinarni program. Ovo će trajati manje od minute za sastavljanje.

go run build.go

Provjerite verziju i popis dodataka caddybinarne datoteke.

./caddy -version && ./caddy -plugins

Kopirajte Caddy binarni nalazi u ~/go/src/github.com/mholt/caddy/caddy/na /usr/bindirektorij i promijeniti Natrag na korijenu korisnički direktorij.

sudo cp caddy /usr/bin/ && cd

Stvorite caddy.servicesystemd datoteku u /etc/systemd/system/direktoriju pomoću echonaredbe.

sudo su -c "echo -e '[Unit]\nAfter=network-online.target\nDescription=Caddy HTTP/2 web server\nDocumentation=https://caddyserver.com/docs\nWants=network.target\n\n[Service]\nAmbientCapabilities=CAP_NET_BIND_SERVICE\nCapabilityBoundingSet=CAP_NET_BIND_SERVICE\nEnvironment=CADDYPATH=/etc/ssl/caddy\n## Environment=VULTR_API_KEY=XXXXXXXX ##Uncomment and add your Vultr API (API tab on the Settings page) if using the Vultr DNS Manager to handle DNS for your VPS instance.\nExecReload=/bin/kill -USR1 $MAINPID\nExecStart=/usr/bin/caddy -agree=true -conf=/etc/caddy/caddy.conf -quic -root=/var/tmp\nGroup=www-data\nKillMode=mixed\nKillSignal=SIGQUIT\nLimitNOFILE=1048576\nLimitNPROC=512\nNoNewPrivileges=true\nPrivateDevices=true\nPrivateTmp=true\nProtectHome=true\nProtectSystem=full\nReadWriteDirectories=/etc/ssl/caddy\nRestart=on-abnormal\nTimeoutStopSec=5s\nUser=www-data\n\n[Install]\nWantedBy=multi-user.target' > /etc/systemd/system/caddy.service"

Napravite /etc/caddy/direktorij koji će sadržavati konfiguracijsku datoteku Caddy web poslužitelja; /etc/ssl/caddy/katalog, koji će sadržavati neka je šifriranje certifikata; /usr/share/caddy/katalog, koji će sadržavati Primjer HTML datoteke; i /var/log/caddy/direktorij, koji će sadržavati zapise Caddy web poslužitelja, koristeći mkdirnaredbu. Promjena vlasništva grupe na www-datagrupu pomoću chownnaredbu /etc/ssl/caddy/i /var/log/caddy/direktorije. Uklonite svjetska izvršna dopuštenja, dopuštenja za čitanje i pisanje, koristeći chmodnaredbu za osiguranje /etc/ssl/caddy/direktorija.

sudo mkdir -p {/etc/{caddy/conf.d,ssl/caddy},/usr/share/caddy,/var/log/caddy} && sudo chown www-data /etc/ssl/caddy/ /var/log/caddy/ && sudo chmod 750 /etc/ssl/caddy/

Omogućite Caddy web poslužitelj.

sudo systemctl daemon-reload && sudo systemctl enable caddy

Konfigurirajte Caddy web poslužitelj

Svaki odjeljak u nastavku objašnjava kako konfigurirati Caddy za različite scenarije. Možete ih koristiti za referencu i preskočiti na odjeljak koji ispunjava vaše zahtjeve.

Postavite Caddy za prikaz statičnih HTML stranica (ne-SSL)

Izradite osnovnu datoteku konfiguracijskog predloška na korijenskoj razini nazvanu caddy.confu /etc/caddy/direktoriju, koja koristi uvoz za stvarnu konfiguracijsku datoteku vhost za uzorak statičke HTML web stranice nazvane example.com.confu /etc/caddy/conf.d/direktoriju pomoću echonaredbe.

sudo su -c 'echo -e "import conf.d/*.conf" > /etc/caddy/caddy.conf' && sudo su -c 'echo -e "example.com:80 {\n\tredir http://www.example.com{url}\n}\nwww.example.com:80 {\n\terrors /var/log/caddy/example.com-error.log\n\timport header.protection\n\tlog /var/log/caddy/example.com-access.log\n\troot /var/www/html/\n}" > /etc/caddy/conf.d/example.com.conf' && sudo su -c 'echo -e "header / {\n\tX-XSS-Protection \"1; mode=block\"\n\tX-Content-Type-Options \"nosniff\"\n\tX-Frame-Options \"SAMEORIGIN\"\n}" > /etc/caddy/conf.d/header.protection'

Stvorite /var/www/htmlimenik i izradite jednostavan index.htmlunutar pomoću echonaredbe.

sudo mkdir -p /var/www/html && sudo su -c 'echo -e "<!DOCTYPE html>"\\n"<head>"\\n\\t"<meta charset="utf-8">"\\n\\t"<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">"\\n\\t"<title>Static HTML Page"\\n\\t"</title>"\\n\\t"<meta name="description" content="">"\\n\\t"<meta name="viewport" content="width=device-width, initial-scale=1">"\\n"</head>"\\n"<body>"\\n\\t"<p>Caddy is working."\\n\\t"</p>"\\n"</body>"\\n"</html>" > /var/www/html/index.html'

Pokrenite Caddy web poslužitelj.

sudo systemctl start caddy

Otvorite svoj web preglednik na FQDN ( example.com) svoje VPS instance.

Postavite Caddy za prikaz statičnih HTML stranica (SSL)

Stvorite osnovnu datoteku predloška konfiguracije na korijenskoj razini nazvanu caddy.confu /etc/caddy/direktoriju koja koristi uvoz za stvarnu konfiguracijsku datoteku vhost za uzorak statičke HTML web stranice nazvane example.com.confu /etc/caddy/conf.d/direktoriju pomoću echonaredbe.

sudo su -c 'echo -e "import conf.d/*.conf" > /etc/caddy/caddy.conf' && sudo su -c 'echo -e "example.com {\n\tredir https://www.example.com{url}\n}\nwww.example.com {\n\terrors /var/log/caddy/example.com-error.log\n\timport header.protection\n\tlog /var/log/caddy/example.com-access.log\n\troot /var/www/html/\n\ttls [email protected]\n}" > /etc/caddy/conf.d/example.com.conf' && sudo su -c 'echo -e "header / {\n\tX-XSS-Protection \"1; mode=block\"\n\tX-Content-Type-Options \"nosniff\"\n\tX-Frame-Options \"SAMEORIGIN\"\n}" > /etc/caddy/conf.d/header.protection'

Stvorite /var/www/htmlimenik i izradite jednostavan index.htmlunutar pomoću echonaredbe.

sudo mkdir -p /var/www/html && sudo su -c 'echo -e "<!DOCTYPE html>"\\n"<head>"\\n\\t"<meta charset="utf-8">"\\n\\t"<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">"\\n\\t"<title>Static HTML Page"\\n\\t"</title>"\\n\\t"<meta name="description" content="">"\\n\\t"<meta name="viewport" content="width=device-width, initial-scale=1">"\\n"</head>"\\n"<body>"\\n\\t"<p>Caddy is working."\\n\\t"</p>"\\n"</body>"\\n"</html>" > /var/www/html/index.html'

Pokrenite Caddy web poslužitelj.

sudo systemctl start caddy

Otvorite svoj web preglednik na FQDN ( example.com) svoje VPS instance.

Postavite Caddy za obradu PHP stranica proxy poslužiteljem PHP-FPM (ne-SSL)

Stvorite osnovnu datoteku predloška konfiguracije korijenske razine nazvanu caddy.confu /etc/caddy/direktoriju koja koristi uvoz za stvarnu konfiguracijsku datoteku vhost za primjer PHPInfo stranice nazvane example.com.confu /etc/caddy/conf.d/direktoriju pomoću echonaredbe.

sudo su -c 'echo -e "import conf.d/*.conf" > /etc/caddy/caddy.conf' && sudo su -c 'echo -e "example.com:80 {\n\tredir http://www.example.com{url}\n}\nwww.example.com:80 {\n\terrors /var/log/caddy/example.com-error.log\n\tfastcgi / /var/run/php/php7.0-fpm.sock php\n\timport header.protection\n\tlog /var/log/caddy/example.com-access.log\n\troot /var/www/html/\n}" > /etc/caddy/conf.d/example.com.conf' && sudo su -c 'echo -e "header / {\n\tX-XSS-Protection \"1; mode=block\"\n\tX-Content-Type-Options \"nosniff\"\n\tX-Frame-Options \"SAMEORIGIN\"\n}" > /etc/caddy/conf.d/header.protection'

Napravite jednostavan index.phpu /var/www/htmlimeniku pomoću echonaredbe.

sudo su -c 'echo -e "<?php\nphpinfo();\n?>" > /var/www/html/index.php'

Instalirajte PHP-FPM poslužitelj za obradu PHP datoteka.

sudo apt install php-fpm -y

Pokrenite Caddy web poslužitelj.

sudo systemctl start caddy

Otvorite svoj web preglednik na FQDN ( example.com) svoje VPS instance.

Postavite Caddy za obradu PHP stranica proxy poslužiteljem PHP-FPM (SSL)

Stvorite osnovnu datoteku konfiguracijskog predloška na korijenskoj razini nazvanu caddy.confu /etc/caddy/direktoriju koja koristi uvoz za stvarnu konfiguracijsku datoteku vhost za uzorak web stranice za dinamičko testiranje nazvanu example.com.confu /etc/caddy/conf.d/direktoriju pomoću echonaredbe.

sudo su -c 'echo -e "import conf.d/*.conf" > /etc/caddy/caddy.conf' && sudo su -c 'echo -e "example.com {\n\tredir https://www.example.com{url}\n}\nwww.example.com {\n\terrors /var/log/caddy/example.com-error.log\n\tfastcgi / /var/run/php/php7.0-fpm.sock php\n\timport header.protection\n\tlog /var/log/caddy/example.com-access.log\n\troot /var/www/html/\n\ttls [email protected]\n}" > /etc/caddy/conf.d/example.com.conf' && sudo su -c 'echo -e "header / {\n\tX-XSS-Protection \"1; mode=block\"\n\tX-Content-Type-Options \"nosniff\"\n\tX-Frame-Options \"SAMEORIGIN\"\n}" > /etc/caddy/conf.d/header.protection'

Napravite jednostavan index.phpu /var/www/htmlimeniku pomoću echonaredbe.

sudo su -c 'echo -e "<?php\nphpinfo();\n?>" > /var/www/html/index.php'

Instalirajte PHP-FPM poslužitelj za obradu PHP datoteka.

sudo apt install php-fpm -y

Pokrenite Caddy web poslužitelj.

sudo systemctl start caddy

Otvorite svoj web preglednik na FQDN ( example.com) svoje VPS instance.

Postavite Caddy za pokretanje Wordpressa proxy poslužiteljem PHP-FPM (Non-SSL)

Create a basic, root level configuration template file named caddy.conf in the /etc/caddy/ directory which uses an import for the actual vhost configuration file for a sample Wordpress test web site named example.com.conf in the /etc/caddy/conf.d/ directory using the echo command.

sudo su -c 'echo -e "import conf.d/*.conf" > /etc/caddy/caddy.conf' && sudo su -c 'echo -e "example.com:80 {\n\tredir http://www.example.com{url}\n}\nwww.example.com:80 {\n\terrors /var/log/caddy/example.com-error.log\n\tfastcgi / /var/run/php/php7.0-fpm.sock php\n\timport header.protection\n\tlog /var/log/caddy/example.com-access.log\n\trewrite {\n\t\tif {path} not_starts_with /wp-admin\n\t\tif {path} not_starts_with /wp-content\n\t\tif {path} not_starts_with /wp-includes\n\t\tto {path} {path}/ /index.php\n\t}\n\troot /var/www/html/\n}" > /etc/caddy/conf.d/example.com.conf' && sudo su -c 'echo -e "header / {\n\tX-XSS-Protection \"1; mode=block\"\n\tX-Content-Type-Options \"nosniff\"\n\tX-Frame-Options \"SAMEORIGIN\"\n}" > /etc/caddy/conf.d/header.protection'

Install the unzip program in order to extract the Wordpress tar-gzipped file (latest.tar.gz).

sudo apt install unzip

Download the latest.tar.gz file into the /tmp/ directory, change the user and group permissions of the /var/www/html directory to the user www-data and group www-data and extract the contents of the latest.tar.gz file into the /var/www/html/ directory.

sudo su - www-data -c "wget -N -P /tmp/ -q https://wordpress.org/latest.tar.gz" -s /bin/bash && sudo chown -R www-data.www-data /var/www/html && sudo su - www-data -c "tar -C /var/www/html/ -zxf /tmp/latest.tar.gz --strip-components=1" -s /bin/bash  && sudo su - www-data -c "rm /tmp/latest.tar.gz" -s /bin/bash

Install the PHP-FPM server to process PHP files and the required PHP extensions required to interact with Wordpress.

sudo apt install php-curl php-fpm php-imagick php-mbstring php-mcrypt php-mysql php-pspell php-xmlrpc -y

Install the MariaDB database server to store data for Wordpress.

sudo apt install mariadb-server -y

Optional: Disable skip-name-resolve to avoid the DNS lookup penalty for client connections, turn off the database TCP/IP listener and use unix sockets only.

sudo sed -i '26iskip-name-resolve\nskip-networking' /etc/mysql/mariadb.conf.d/50-server.cnf

Restart the MariaDB database server to the new configuration changes.

sudo systemctl restart mysql

Secure the MariaDB database server. Replace the ******** holder below in the first command with a new root password.

sudo mysql -e "UPDATE mysql.user SET Password=PASSWORD('********') WHERE User='root'" && sudo mysql -e "DELETE FROM mysql.user WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1')" && sudo mysql -e "DELETE FROM mysql.user WHERE User=''" && sudo mysql -e "DELETE FROM mysql.db WHERE Db='test' OR Db='test\_%'" && sudo mysql -e "" && sudo mysql -e "FLUSH PRIVILEGES"

Create a database, wordpress_example_com, for Wordpress; a specific database user, wordpress_example_com_admin and the minimal database permissions necessary, (ALTER, CREATE, DELETE, DROP, INDEX, INSERT, SELECT, & UPDATE ), for Wordpress core and plugin installations' day to day functioning and core/plugin updates. Replace the example_com in wordpress_example_com with your actual domain name, example_com in wordpress_example_com_admin with your actual domain name and ******** with a new password specifically for the wordpress_example_com_admin user.

sudo mysql -e "CREATE DATABASE wordpress_example_com DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci" && sudo mysql -e "CREATE USER 'wordpress_example_com_admin'@'localhost' IDENTIFIED BY '********'; GRANT USAGE ON *.* TO 'wordpress_example_com_admin'@'localhost';" && sudo mysql -e "GRANT ALTER, CREATE, DELETE, DROP, INDEX, INSERT, SELECT, UPDATE ON wordpress_example_com.* TO 'wordpress_example_com_admin'@'localhost';" && sudo mysql -e "FLUSH PRIVILEGES"

Create the Wordpress configuration file, wp-config.php, in the /var/www/html directory. Replace the example_com in wordpress_example_com with your actual domain name, example_com in wordpress_example_com_admin with your actual domain name and ******** with a new password specifically for the wordpress_example_com_admin user.

sudo su - www-data -c 'echo -e "<?php\ndefine('\'DB_CHARSET''\'', '\'utf8''\'');\ndefine('\'DB_COLLATE''\'', '\'''\'');\ndefine('\'DB_HOST''\'', '\'localhost''\'');\ndefine('\'DB_NAME''\'', '\'wordpress_example_com''\'');\ndefine('\'DB_PASSWORD''\'', '\'********''\'');\ndefine('\'DB_USER''\'', '\'wordpress_example_com_admin''\'');\ndefine('\'FS_METHOD''\'', '\'direct''\'');\ndefine('\'WP_DEBUG''\'', false);" > /var/www/html/wp-config.php' -s /bin/bash && sudo su -c www-data -c "curl -s https://api.wordpress.org/secret-key/1.1/salt/ >> /var/www/html/wp-config.php" && sudo su - www-data -c 'echo -e "\$table_prefix  = '\'wp_''\'';\nif ( !defined('\'ABSPATH''\'') )\n\tdefine('\'ABSPATH''\'', dirname(__FILE__) . '\'/''\'');\nrequire_once(ABSPATH . '\'wp-settings.php''\'');\nfunction _remove_script_version( \$src ){ if ( strpos( \$src, '\'ver=''\'' ) ) \$src = remove_query_arg( '\'ver''\'', \$src ); return \$src; }\nadd_filter( '\'script_loader_src''\'', '\'_remove_script_version''\'', 15, 1 );\nadd_filter( '\'style_loader_src''\'', '\'_remove_script_version''\'', 15, 1 );" >> /var/www/html/wp-config.php' -s /bin/bash

Start the Caddy web server.

sudo systemctl start caddy

Open your web browser to the FQDN (example.com) of your VPS instance. You will see a language selection page. After selecting the language, click the blue Continue button, on the bottom right, to go to the next step of the Wordpress installation.

On the next page, enter a title for your website in the Site Title field (1), an administrator's username in the Username field (2). Use the generated password or input your own password in the Password field (3). Enter a valid email address in the Your Email field (4) and enable or leave disabled the Search Engine Visibility option (5), depending on whether your site is in the building phase. When you are satisfied, click the gray Install Wordpress button (6) to complete the Wordpress setup.

You will arrive in the Wordpress administration area. The initial installation of Wordpress is now complete.

Setup Caddy To Run Wordpress By Proxying The PHP-FPM Server (Non-SSL)

Create a basic, root level configuration template file named caddy.conf in the /etc/caddy/ directory which uses an import for the actual vhost configuration file for a sample Wordpress test web site named example.com.conf in the /etc/caddy/conf.d/ directory using the echo command.

sudo su -c 'echo -e "import conf.d/*.conf" > /etc/caddy/caddy.conf' && sudo su -c 'echo -e "example.com {\n\tredir https://www.example.com{url}\n}\nwww.example.com {\n\terrors /var/log/caddy/example.com-error.log\n\tfastcgi / /var/run/php/php7.0-fpm.sock php\n\timport header.protection\n\tlog /var/log/caddy/example.com-access.log\n\trewrite {\n\t\tif {path} not_starts_with /wp-admin\n\t\tif {path} not_starts_with /wp-content\n\t\tif {path} not_starts_with /wp-includes\n\t\tto {path} {path}/ /index.php\n\t}\n\troot /var/www/html/\n\ttls [email protected]\n}" > /etc/caddy/conf.d/example.com.conf' && sudo su -c 'echo -e "header / {\n\tX-XSS-Protection \"1; mode=block\"\n\tX-Content-Type-Options \"nosniff\"\n\tX-Frame-Options \"SAMEORIGIN\"\n}" > /etc/caddy/conf.d/header.protection'

Install the unzip program in order to extract the Wordpress tar-gzipped file, (latest.tar.gz).

sudo apt install unzip

Download the latest.tar.gz file into the /tmp/ directory, change the user and group permissions of the /var/www/html directory to the user www-data and group www-data and extract the contents of the latest.tar.gz file into the /var/www/html/ directory.

sudo su - www-data -c "wget -N -P /tmp/ -q https://wordpress.org/latest.tar.gz" -s /bin/bash && sudo chown -R www-data.www-data /var/www/html && sudo su - www-data -c "tar -C /var/www/html/ -zxf /tmp/latest.tar.gz --strip-components=1" -s /bin/bash  && sudo su - www-data -c "rm /tmp/latest.tar.gz" -s /bin/bash

Install the PHP-FPM server to process PHP files and the required PHP extensions required to interact with Wordpress.

sudo apt install php-curl php-fpm php-imagick php-mbstring php-mcrypt php-mysql php-pspell php-xmlrpc -y

Install the MariaDB database server to store data for Wordpress.

sudo apt install mariadb-server -y

Optional: Disable skip-name-resolve to avoid the DNS lookup penalty for client connections, turn off the database TCP/IP listener and use unix sockets only.

sudo sed -i '26iskip-name-resolve\nskip-networking' /etc/mysql/mariadb.conf.d/50-server.cnf

Restart the MariaDB database server to the new configuration changes.

sudo systemctl restart mysql

Secure the MariaDB database server. Replace the ******** holder below in the first command with a new root password.

sudo mysql -e "UPDATE mysql.user SET Password=PASSWORD('********') WHERE User='root'" && sudo mysql -e "DELETE FROM mysql.user WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1')" && sudo mysql -e "DELETE FROM mysql.user WHERE User=''" && sudo mysql -e "DELETE FROM mysql.db WHERE Db='test' OR Db='test\_%'" && sudo mysql -e "" && sudo mysql -e "FLUSH PRIVILEGES"

Create a database, wordpress_example_com, for Wordpress; a specific database user, wordpress_example_com_admin and the minimal database permissions necessary (ALTER, CREATE, DELETE, DROP, INDEX, INSERT, SELECT, & UPDATE )for Wordpress core and plugin installations' day to day functioning and core/plugin updates. Replace the example_com in wordpress_example_com with your actual domain name, example_com in wordpress_example_com_admin with your actual domain name and ******** with a new password specifically for the wordpress_example_com_admin user.

sudo mysql -e "CREATE DATABASE wordpress_example_com DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci" && sudo mysql -e "CREATE USER 'wordpress_example_com_admin'@'localhost' IDENTIFIED BY '********'; GRANT USAGE ON *.* TO 'wordpress_example_com_admin'@'localhost';" && sudo mysql -e "GRANT ALTER, CREATE, DELETE, DROP, INDEX, INSERT, SELECT, UPDATE ON wordpress_example_com.* TO 'wordpress_example_com_admin'@'localhost';" && sudo mysql -e "FLUSH PRIVILEGES"

Create the Wordpress configuration file, wp-config.php, in the /var/www/html directory. Replace the example_com in wordpress_example_com with your actual domain name, example_com in wordpress_example_com_admin with your actual domain name and ******** with a new password specifically for the wordpress_example_com_admin user.

sudo su - www-data -c 'echo -e "<?php\ndefine('\'DB_CHARSET''\'', '\'utf8''\'');\ndefine('\'DB_COLLATE''\'', '\'''\'');\ndefine('\'DB_HOST''\'', '\'localhost''\'');\ndefine('\'DB_NAME''\'', '\'wordpress_example_com''\'');\ndefine('\'DB_PASSWORD''\'', '\'********''\'');\ndefine('\'DB_USER''\'', '\'wordpress_example_com_admin''\'');\ndefine('\'FS_METHOD''\'', '\'direct''\'');\ndefine('\'WP_DEBUG''\'', false);" > /var/www/html/wp-config.php' -s /bin/bash && sudo su -c www-data -c "curl -s https://api.wordpress.org/secret-key/1.1/salt/ >> /var/www/html/wp-config.php" && sudo su - www-data -c 'echo -e "\$table_prefix  = '\'wp_''\'';\nif ( !defined('\'ABSPATH''\'') )\n\tdefine('\'ABSPATH''\'', dirname(__FILE__) . '\'/''\'');\nrequire_once(ABSPATH . '\'wp-settings.php''\'');\nfunction _remove_script_version( \$src ){ if ( strpos( \$src, '\'ver=''\'' ) ) \$src = remove_query_arg( '\'ver''\'', \$src ); return \$src; }\nadd_filter( '\'script_loader_src''\'', '\'_remove_script_version''\'', 15, 1 );\nadd_filter( '\'style_loader_src''\'', '\'_remove_script_version''\'', 15, 1 );" >> /var/www/html/wp-config.php' -s /bin/bash

Start the Caddy web server.

sudo systemctl start caddy

Open your web browser to the FQDN (example.com) of your VPS instance. After selecting the language, click the blue Continue button, on the bottom right, to go to the next step of the Wordpress installation.

On the next page, enter a title for your website in the Site Title field (1), an administrator's username in the Username field (2). Use the generated password or input your own password in the Password field (3). Enter a valid email address in the Your Email field (4) and enable or leave disabled the Search Engine Visibility option (5), depending on whether your site is in the building phase. When you are satisfied, click the gray Install Wordpress button (6) to complete the Wordpress setup.

You will arrive in the Wordpress administration area. The initial installation of Wordpress is now complete.