apache2和httpd web服务器

apache2和httpd web服务器是啥

apache是软件基金会

一个非营利组织，专注于孵化开源软件项目，并提供开源软件的开发、维护和分发。Apache基金会成立于1999年，至今已经成功孵化了超过350个项目，包括但不限于Dubbo、Apollo、CloudStack、Flink、Groovy、Hive、Mesos、Nutch、Pig、Spark、Storm、Python、Node.js、Django等。

apache2是一个web服务

Ubuntu系统和Debian系统的叫法。

root@b8b4b2869516:/# apt-get install apache2 
root@b8b4b2869516:/# 
root@b8b4b2869516:/# dpkg -L apache2
/.
/etc
/etc/apache2
/etc/apache2/apache2.conf
/etc/apache2/conf-available
/etc/apache2/conf-available/charset.conf
/etc/apache2/conf-available/localized-error-pages.conf
/etc/apache2/conf-available/other-vhosts-access-log.conf
/etc/apache2/conf-available/security.conf
/etc/apache2/conf-available/serve-cgi-bin.conf
/etc/apache2/conf-enabled
/etc/apache2/envvars
/etc/apache2/magic
/etc/apache2/mods-available
/etc/apache2/mods-available/access_compat.load
/etc/apache2/mods-available/actions.conf
/etc/apache2/mods-available/actions.load
/etc/apache2/mods-available/alias.conf
/etc/apache2/mods-available/alias.load
/etc/apache2/mods-available/allowmethods.load
/etc/apache2/mods-available/asis.load
/etc/apache2/mods-available/auth_basic.load
/etc/apache2/mods-available/auth_digest.load
/etc/apache2/mods-available/auth_form.load
/etc/apache2/mods-available/authn_anon.load
/etc/apache2/mods-available/authn_core.load
/etc/apache2/mods-available/authn_dbd.load
/etc/apache2/mods-available/authn_dbm.load
/etc/apache2/mods-available/authn_file.load
/etc/apache2/mods-available/authn_socache.load
/etc/apache2/mods-available/authnz_fcgi.load
/etc/apache2/mods-available/authnz_ldap.load
/etc/apache2/mods-available/authz_core.load
/etc/apache2/mods-available/authz_dbd.load
/etc/apache2/mods-available/authz_dbm.load
/etc/apache2/mods-available/authz_groupfile.load
/etc/apache2/mods-available/authz_host.load
/etc/apache2/mods-available/authz_owner.load
/etc/apache2/mods-available/authz_user.load
/etc/apache2/mods-available/autoindex.conf
/etc/apache2/mods-available/autoindex.load
/etc/apache2/mods-available/brotli.load
/etc/apache2/mods-available/buffer.load
/etc/apache2/mods-available/cache.load
/etc/apache2/mods-available/cache_disk.conf
/etc/apache2/mods-available/cache_disk.load
/etc/apache2/mods-available/cache_socache.load
/etc/apache2/mods-available/cern_meta.load
/etc/apache2/mods-available/cgi.load
/etc/apache2/mods-available/cgid.conf
/etc/apache2/mods-available/cgid.load
/etc/apache2/mods-available/charset_lite.load
/etc/apache2/mods-available/data.load
/etc/apache2/mods-available/dav.load
/etc/apache2/mods-available/dav_fs.conf
/etc/apache2/mods-available/dav_fs.load
/etc/apache2/mods-available/dav_lock.load
/etc/apache2/mods-available/dbd.load
/etc/apache2/mods-available/deflate.conf
/etc/apache2/mods-available/deflate.load
/etc/apache2/mods-available/dialup.load
/etc/apache2/mods-available/dir.conf
/etc/apache2/mods-available/dir.load
/etc/apache2/mods-available/dump_io.load
/etc/apache2/mods-available/echo.load
/etc/apache2/mods-available/env.load
/etc/apache2/mods-available/expires.load
/etc/apache2/mods-available/ext_filter.load
/etc/apache2/mods-available/file_cache.load
/etc/apache2/mods-available/filter.load
/etc/apache2/mods-available/headers.load
/etc/apache2/mods-available/heartbeat.load
/etc/apache2/mods-available/heartmonitor.load
/etc/apache2/mods-available/http2.conf
/etc/apache2/mods-available/http2.load
/etc/apache2/mods-available/ident.load
/etc/apache2/mods-available/imagemap.load
/etc/apache2/mods-available/include.load
/etc/apache2/mods-available/info.conf
/etc/apache2/mods-available/info.load
/etc/apache2/mods-available/lbmethod_bybusyness.load
/etc/apache2/mods-available/lbmethod_byrequests.load
/etc/apache2/mods-available/lbmethod_bytraffic.load
/etc/apache2/mods-available/lbmethod_heartbeat.load
/etc/apache2/mods-available/ldap.conf
/etc/apache2/mods-available/ldap.load
/etc/apache2/mods-available/log_debug.load
/etc/apache2/mods-available/log_forensic.load
/etc/apache2/mods-available/lua.load
/etc/apache2/mods-available/macro.load
/etc/apache2/mods-available/md.load
/etc/apache2/mods-available/mime.conf
/etc/apache2/mods-available/mime.load
/etc/apache2/mods-available/mime_magic.conf
/etc/apache2/mods-available/mime_magic.load
/etc/apache2/mods-available/mpm_event.conf
/etc/apache2/mods-available/mpm_event.load
/etc/apache2/mods-available/mpm_prefork.conf
/etc/apache2/mods-available/mpm_prefork.load
/etc/apache2/mods-available/mpm_worker.conf
/etc/apache2/mods-available/mpm_worker.load
/etc/apache2/mods-available/negotiation.conf
/etc/apache2/mods-available/negotiation.load
/etc/apache2/mods-available/proxy.conf
/etc/apache2/mods-available/proxy.load
/etc/apache2/mods-available/proxy_ajp.load
/etc/apache2/mods-available/proxy_balancer.conf
/etc/apache2/mods-available/proxy_balancer.load
/etc/apache2/mods-available/proxy_connect.load
/etc/apache2/mods-available/proxy_express.load
/etc/apache2/mods-available/proxy_fcgi.load
/etc/apache2/mods-available/proxy_fdpass.load
/etc/apache2/mods-available/proxy_ftp.conf
/etc/apache2/mods-available/proxy_ftp.load
/etc/apache2/mods-available/proxy_hcheck.load
/etc/apache2/mods-available/proxy_html.conf
/etc/apache2/mods-available/proxy_html.load
/etc/apache2/mods-available/proxy_http.load
/etc/apache2/mods-available/proxy_http2.load
/etc/apache2/mods-available/proxy_scgi.load
/etc/apache2/mods-available/proxy_uwsgi.load
/etc/apache2/mods-available/proxy_wstunnel.load
/etc/apache2/mods-available/ratelimit.load
/etc/apache2/mods-available/reflector.load
/etc/apache2/mods-available/remoteip.load
/etc/apache2/mods-available/reqtimeout.conf
/etc/apache2/mods-available/reqtimeout.load
/etc/apache2/mods-available/request.load
/etc/apache2/mods-available/rewrite.load
/etc/apache2/mods-available/sed.load
/etc/apache2/mods-available/session.load
/etc/apache2/mods-available/session_cookie.load
/etc/apache2/mods-available/session_crypto.load
/etc/apache2/mods-available/session_dbd.load
/etc/apache2/mods-available/setenvif.conf
/etc/apache2/mods-available/setenvif.load
/etc/apache2/mods-available/slotmem_plain.load
/etc/apache2/mods-available/slotmem_shm.load
/etc/apache2/mods-available/socache_dbm.load
/etc/apache2/mods-available/socache_memcache.load
/etc/apache2/mods-available/socache_redis.load
/etc/apache2/mods-available/socache_shmcb.load
/etc/apache2/mods-available/speling.load
/etc/apache2/mods-available/ssl.conf
/etc/apache2/mods-available/ssl.load
/etc/apache2/mods-available/status.conf
/etc/apache2/mods-available/status.load
/etc/apache2/mods-available/substitute.load
/etc/apache2/mods-available/suexec.load
/etc/apache2/mods-available/unique_id.load
/etc/apache2/mods-available/userdir.conf
/etc/apache2/mods-available/userdir.load
/etc/apache2/mods-available/usertrack.load
/etc/apache2/mods-available/vhost_alias.load
/etc/apache2/mods-available/xml2enc.load
/etc/apache2/mods-enabled
/etc/apache2/ports.conf
/etc/apache2/sites-available
/etc/apache2/sites-available/000-default.conf
/etc/apache2/sites-available/default-ssl.conf
/etc/apache2/sites-enabled
/etc/cron.daily
/etc/cron.daily/apache2
/etc/default
/etc/default/apache-htcacheclean
/etc/init.d
/etc/init.d/apache-htcacheclean
/etc/init.d/apache2
/etc/logrotate.d
/etc/logrotate.d/apache2
/etc/ufw
/etc/ufw/applications.d
/etc/ufw/applications.d/apache2
/etc/ufw/applications.d/apache2-utils.ufw.profile
/lib
/lib/systemd
/lib/systemd/system
/lib/systemd/system/apache-htcacheclean.service
/lib/systemd/system/apache-htcacheclean@.service
/lib/systemd/system/apache2.service
/lib/systemd/system/apache2@.service
/usr
/usr/lib
/usr/lib/cgi-bin
/usr/sbin
/usr/sbin/a2enmod
/usr/sbin/a2query
/usr/sbin/apache2ctl
/usr/share
/usr/share/apache2
/usr/share/apache2/apache2-maintscript-helper
/usr/share/apache2/ask-for-passphrase
/usr/share/bash-completion
/usr/share/bash-completion/completions
/usr/share/bash-completion/completions/a2enmod
/usr/share/bug
/usr/share/bug/apache2
/usr/share/doc
/usr/share/doc/apache2
/usr/share/doc/apache2/NEWS.Debian.gz
/usr/share/doc/apache2/PACKAGING.gz
/usr/share/doc/apache2/README.Debian.gz
/usr/share/doc/apache2/README.backtrace
/usr/share/doc/apache2/README.multiple-instances
/usr/share/doc/apache2/copyright
/usr/share/doc/apache2/examples
/usr/share/doc/apache2/examples/apache2.monit
/usr/share/doc/apache2/examples/secondary-init-script
/usr/share/doc/apache2/examples/setup-instance
/usr/share/lintian
/usr/share/lintian/overrides
/usr/share/lintian/overrides/apache2
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/a2query.1.gz
/usr/share/man/man8
/usr/share/man/man8/a2enconf.8.gz
/usr/share/man/man8/a2enmod.8.gz
/usr/share/man/man8/a2ensite.8.gz
/usr/share/man/man8/apache2ctl.8.gz
/var
/var/cache
/var/cache/apache2
/var/cache/apache2/mod_cache_disk
/var/lib
/var/lib/apache2
/var/log
/var/log/apache2
/var/www
/var/www/html
/usr/sbin/a2disconf
/usr/sbin/a2dismod
/usr/sbin/a2dissite
/usr/sbin/a2enconf
/usr/sbin/a2ensite
/usr/sbin/apachectl
/usr/share/bash-completion/completions/a2disconf
/usr/share/bash-completion/completions/a2dismod
/usr/share/bash-completion/completions/a2dissite
/usr/share/bash-completion/completions/a2enconf
/usr/share/bash-completion/completions/a2ensite
/usr/share/bug/apache2/control
/usr/share/bug/apache2/script
/usr/share/doc/apache2/changelog.Debian.gz
/usr/share/man/man8/a2disconf.8.gz
/usr/share/man/man8/a2dismod.8.gz
/usr/share/man/man8/a2dissite.8.gz
/usr/share/man/man8/apachectl.8.gz
root@b8b4b2869516:/# 
root@b8b4b2869516:/# cd /etc/apache2
root@b8b4b2869516:/etc/apache2# 
root@b8b4b2869516:/etc/apache2# 
root@b8b4b2869516:/etc/apache2# 
root@b8b4b2869516:/etc/apache2# 
root@b8b4b2869516:/etc/apache2# ls -lath
total 92K
drwxr-xr-x 1 root root 4.0K Jul 28 14:18 ..
drwxr-xr-x 2 root root 4.0K Jul 28 14:18 sites-enabled
drwxr-xr-x 2 root root 4.0K Jul 28 14:18 conf-enabled
drwxr-xr-x 2 root root 4.0K Jul 28 14:18 mods-enabled
drwxr-xr-x 2 root root 4.0K Jul 28 14:18 sites-available
drwxr-xr-x 8 root root 4.0K Jul 28 14:18 .
drwxr-xr-x 2 root root  12K Jul 28 14:18 mods-available
drwxr-xr-x 2 root root 4.0K Jul 28 14:18 conf-available
-rw-r--r-- 1 root root 7.1K Jul 18 02:58 apache2.conf
-rw-r--r-- 1 root root 1.8K Dec  5  2023 envvars
-rw-r--r-- 1 root root  31K Dec  5  2023 magic
-rw-r--r-- 1 root root  320 Dec  5  2023 ports.conf
root@b8b4b2869516:/etc/apache2# 
root@b8b4b2869516:/etc/apache2# 

httpd和apache2是同一个东西，但是不同linux发行版中叫法不一样。就是同一个东西，但是看上去有一些不一样。

Centos上的叫法

yum install httpd