Pcre compile

Subdomain redirection

nginx: [emerg] pcre_compile() failed: unrecognized character after (? or (?- in "^(?XXX.+)\.domain\.com$" at "XXX.+)\.domain\.com$" in /etc/nginx/sites-enabled/default:75
nginx: configuration file /etc/nginx/nginx.conf test failed

See also

• Web server: Nginx: /etc/nginx/nginx.conf, nginx -t, Nginx logs, Nginx change log, PHP, php-fpm, Let's encrypt, Nginx directives, Reverse Proxy, Configure HTTP redirection Nginx, Return, proxy_pass (Reverse proxy), ngx_http_rewrite_module, /etc/nginx/sites-enabled/, error.log, access.log, /nginx status, AIO
• Regular expression, PCRE, pcre_compile, grok, find . -regex, ReDoS