Installer Caddy-webserveren fra kilden til overholdelse af licens på Ubuntu 16.04 LTS

I september 2017 blev Caddy EULA ændret, og alle Caddy-instanser, der drives af virksomheder og personlige websteder, der driver handel, kræver en kommerciel licens til den Caddy-downloadede binære fil. Denne vejledning hjælper kunder, der ønsker at installere Caddy-webserveren i overensstemmelse med den nye EULA. I skrivende stund, når du kompilerer Caddy fra kilden og opretter din egen binære, er en betalt licens ikke påkrævet, uanset om du er en virksomhed eller driver handel på dit personlige websted. Det er vigtigt at gennemgå den seneste EULA for overholdelse, før du følger trinene i denne vejledning.

Funktioner:

• Kort, let forståelig konfiguration
• Bygget med Go
• Udvidelig logning
• Ekstremt hurtig statisk fillevering
• Dynamisk site & proxy support
• Intern konfigurationskontrol
• Statisk binær
• Bruger Mozillas anbefalede moderne cifre som standard
• MITM (mand i midten) detektion
• SNI (servernavn indikator) understøttelse
• Automatisk Lad os kryptere certifikatgenerering/hentning/fornyelse
• OCSP support
• Understøttelse af virtuelle værter
• Markdown2html-gengivelsesstøtte
• Indbygget HTTP/2, QUIC & Websocket support
• Belastningsbalancering, omvendt proxy og SSL-termineringsunderstøttelse

Forudsætninger

• En Ubuntu 16.04 LTS-instans
• En sudo- bruger
• En Golang-version højere end 1.8+

Systemopdatering

Log ind som en almindelig bruger, der har tilladelse til at bruge sudo-kommandoen. Opdater systemet som følger.

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

Installer Caddy fra kilden

Download den seneste udgivelsesversion af Caddy-webserverens kildekode. Dette indeholder ingen tredjeparts plugins til Caddy.

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

Valgfrit: Hvis du har brug for tredjeparts tls.dns.vultrdnsproviders-plugin, skal du kopiere følgende. Dette vil downloade både Caddy-kildekoden og tredjeparts- tls.dns.vultrdnsproviders-plugin'et, hvis du ønsker at bruge det.

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

Kompiler det caddybinære. Dette vil tage mindre end et minut at kompilere.

go run build.go

Tjek versionen og pluginlisten for caddybinæren.

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

Kopier Caddy binær placeret i ~/go/src/github.com/mholt/caddy/caddy/den /usr/binmappe og ændre den mappe tilbage til roden af din bruger mappe.

sudo cp caddy /usr/bin/ && cd

Opret caddy.servicesystemd-filen i /etc/systemd/system/mappen ved hjælp af echokommandoen.

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"

Opret /etc/caddy/mappen, som vil indeholde Caddy-webserverens konfigurationsfil; den /etc/ssl/caddy/mappe, som vil indeholde Lad os Krypter certifikater; den /usr/share/caddy/mappe, som vil indeholde prøven html-fil; og /var/log/caddy/mappen, som vil indeholde Caddy-webserverlogfilerne, ved hjælp af mkdirkommandoen. Skift gruppe ejerskab til www-datagruppe ved hjælp af chownkommandoen til /etc/ssl/caddy/og /var/log/caddy/mapper. Fjern verdens eksekverbare, læsbare og skrivbare tilladelser ved at bruge chmodkommandoen til at sikre /etc/ssl/caddy/mappen.

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/

Aktiver Caddy-webserveren.

sudo systemctl daemon-reload && sudo systemctl enable caddy

Konfigurer Caddy Web Server

Hvert afsnit nedenfor forklarer, hvordan man konfigurerer Caddy til forskellige scenarier. Du kan bruge disse som reference og springe til det afsnit, der opfylder dine krav.

Konfigurer Caddie til at vise statiske HTML-sider (ikke-SSL)

Opret en grundlæggende konfigurationsskabelonfil på rodniveau, der er navngivet caddy.confi /etc/caddy/mappen, som bruger en import til den faktiske vhost-konfigurationsfil for et statisk HTML-websted, der er navngivet example.com.confi /etc/caddy/conf.d/mappen ved hjælp af echokommandoen.

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'

Opret /var/www/htmlmappen og opret en enkel index.htmlinderside ved hjælp af echokommandoen.

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'

Start Caddy-webserveren.

sudo systemctl start caddy

Åbn din webbrowser til FQDN ( example.com) for din VPS-instans.

Konfigurer Caddie til at vise statiske HTML-sider (SSL)

Opret en grundlæggende konfigurationsskabelonfil på rodniveau, der er navngivet caddy.confi /etc/caddy/mappen, som bruger en import til den faktiske vhost-konfigurationsfil til et eksempel på et statisk HTML-websted navngivet example.com.confi /etc/caddy/conf.d/mappen ved hjælp af echokommandoen.

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'

Opret /var/www/htmlmappen og opret en enkel index.htmlinderside ved hjælp af echokommandoen.

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'

Start Caddy-webserveren.

sudo systemctl start caddy

Åbn din webbrowser til FQDN ( example.com) for din VPS-instans.

Konfigurer Caddie til at behandle PHP-sider ved at proxye PHP-FPM-serveren (ikke-SSL)

Opret en grundlæggende konfigurationsskabelonfil på rodniveau, der er navngivet caddy.confi /etc/caddy/mappen, som bruger en import til den faktiske vhost-konfigurationsfil for en eksempel PHPInfo-side navngivet example.com.confi /etc/caddy/conf.d/mappen ved hjælp af echokommandoen.

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'

Opret en simpel index.phpi /var/www/htmlmappen ved hjælp af echokommandoen.

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

Installer PHP-FPM-serveren for at behandle PHP-filer.

sudo apt install php-fpm -y

Start Caddy-webserveren.

sudo systemctl start caddy

Åbn din webbrowser til FQDN ( example.com) for din VPS-instans.

Konfigurer Caddie til at behandle PHP-sider ved at proxye PHP-FPM-serveren (SSL)

Opret en grundlæggende konfigurationsskabelonfil på rodniveau, der er navngivet caddy.confi /etc/caddy/mappen, som bruger en import til den faktiske vhost-konfigurationsfil for et eksempel på et dynamisk testwebsted, der er navngivet example.com.confi /etc/caddy/conf.d/mappen ved hjælp af echokommandoen.

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'

Opret en simpel index.phpi /var/www/htmlmappen ved hjælp af echokommandoen.

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

Installer PHP-FPM-serveren for at behandle PHP-filer.

sudo apt install php-fpm -y

Start Caddy-webserveren.

sudo systemctl start caddy

Åbn din webbrowser til FQDN ( example.com) for din VPS-instans.

Konfigurer Caddy til at køre Wordpress ved at proxye PHP-FPM-serveren (ikke-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.