Proxing to tomcat with httpd Jean-Frederic Clere Principal Software Engineer / Red Hat What I will cover ● Proxy what and why. ● Protocols – AJP – HTTP/HTTPS (1.1) – HTTP/2 (H2 and H2C) – Others reverse proxy – ● Supported by httpd 11 10/12/22 Demultiplexing h2 in proxy ● Keep the back-end unchanged ● Keep the overhead of h2 proxy 12 10/12/22 Other proxies ● HAProxy (in the cloud / openshift for example) ● mod_cluster (httpd dynamic load balancer) ● Undertow proxy (jboss servlet container) ● Ingress (in kubernetes, well

website at http://httpd.apache.org/docs/2.4/ The Apache HTTP Server Documentation is maintained by the Apache HTTP Server Documentation Project. More information is available at http://httpd.apache.org/docs-project/ Dynamic Content with CGI . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 6.5 Apache httpd Tutorial: Introduction to Server Side Includes . . . . . . . . . . . . . . . . . . . . . 231 6.6 Supporting Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 8.2 httpd - Apache Hypertext Transfer Protocol Server . . . . . . . . . . . . . . . . . . . . . . . . . . 279

website at http://httpd.apache.org/docs/2.4/ The Apache HTTP Server Documentation is maintained by the Apache HTTP Server Documentation Project. More information is available at http://httpd.apache.org/docs-project/ Dynamic Content with CGI . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 6.5 Apache httpd Tutorial: Introduction to Server Side Includes . . . . . . . . . . . . . . . . . . . . . 231 6.6 Supporting Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 8.2 httpd - Apache Hypertext Transfer Protocol Server . . . . . . . . . . . . . . . . . . . . . . . . . . 279

website at http://httpd.apache.org/docs/2.4/ The Apache HTTP Server Documentation is maintained by the Apache HTTP Server Documentation Project. More information is available at http://httpd.apache.org/docs-project/ Dynamic Content with CGI . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 6.5 Apache httpd Tutorial: Introduction to Server Side Includes . . . . . . . . . . . . . . . . . . . . . 239 6.6 Supporting Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 8.2 httpd - Apache Hypertext Transfer Protocol Server . . . . . . . . . . . . . . . . . . . . . . . . . . 301

website at http://httpd.apache.org/docs/2.4/ The Apache HTTP Server Documentation is maintained by the Apache HTTP Server Documentation Project. More information is available at http://httpd.apache.org/docs-project/ Dynamic Content with CGI . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 6.5 Apache httpd Tutorial: Introduction to Server Side Includes . . . . . . . . . . . . . . . . . . . . . 239 6.6 Supporting Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 8.2 httpd - Apache Hypertext Transfer Protocol Server . . . . . . . . . . . . . . . . . . . . . . . . . . 301

website at http://httpd.apache.org/docs/2.2/ The Apache HTTP Server Documentation is maintained by the Apache HTTP Server Documentation Project. More information is available at http://httpd.apache.org/docs-project/ Supporting Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264 8.2 httpd - Apache Hypertext Transfer Protocol Server . . . . . . . . . . . . . . . . . . . . . . . . . . 265 should edit httpd.conf to include the relevant MOD SSL directives and then use apachectl start to start the server. An example configuration to activate MOD SSL has been included in conf/extra/httpd-ssl.conf

website at http://httpd.apache.org/docs/2.0/ The Apache HTTP Server Documentation is maintained by the Apache HTTP Server Documentation Project. More information is available at http://httpd.apache.org/docs-project/ Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 CONTENTS v 8.2 httpd - Apache Hypertext Transfer Protocol Server . . . . . . . . . . . . . . . . . . . . . . . . . . 237 your httpd.conf. In order to assure that Apache reads the configuration files in the same order as was implied by the older directives, the INCLUDE directives should be placed at the end of httpd.conf

(Isovalent) October 28, 2020 10.0.0.1 10.0.0.2 10.0.0.3 httpd httpd “httpd” service 10.0.0.1:30000 10.0.0.2:30000 10.0.0.3:30000 httpd httpd 1010101010111 1010101010111 1010101010111 1010101010111 "default/nginx-57: has no endpoints" -m tcp --dport 80 -j REJECT --reject-with icmp-port-unreachable COMMIT httpd httpd void loadbalance(skb) { svc = bpf_map_lookup_elem(..); if (svc) { b = select_backend(svc); POSTROUTING nat POSTROUTING TC egress host httpd pod lxc0 eth0 XDP httpd httpd 1010101010111 1010101010111 1010101010111 DSR httpd httpd 1010101010111 1010101010111 Consistent hashing

I’m using the Apache server. As suggested by “Rob M” in the phpWizard forum, add this line to your httpd.conf: SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown It seems to clear up many PHPIniDir "C:/PHP" AddType text/html .php AddHandler application/x-httpd-php .php In some rare cases this problem can be also caused by other Fandos: put a comment on the following two lines in httpd.conf, like this: # mod_gzip_item_include file \.php$ # mod_gzip_item_include mime "application/x-httpd-php.*" as this version of mod_gzip on Apache

I’m using the Apache server. As suggested by “Rob M” in the phpWizard forum, add this line to your httpd.conf: SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown It seems to clear up many PHPIniDir "C:/PHP" AddType text/html .php AddHandler application/x-httpd-php .php In some rare cases this problem can be also caused by other Fandos: put a comment on the following two lines in httpd.conf, like this: # mod_gzip_item_include file \.php$ # mod_gzip_item_include mime "application/x-httpd-php.*" as this version of mod_gzip on Apache