HTTP 데몬(HTTP Daemon), 즉 httpd는 웹 서버의 백그라운드에서 실행되어, 들어오는 서버 요청을 대기하는 소프트웨어 프로그램이다. 이 데몬은 자동으로 요청에 응답하며 HTTP를 사용하여 인터넷을 경유, 하이퍼텍스트, 멀티미디어 문서들을 서비스한다. HTTPd는 HTTP daemon의 준말이다. (예: 웹 서버)
yum 명령으로 패키지를 설치한다.
[root@class14 ~]# yum install -y httpd Loaded plugins: fastestmirror, langpacks Determining fastest mirrors epel/x86_64/metalink | 2.8 kB 00:00:00 * base: mirror.kakao.com base | 3.6 kB 00:00:00 (1/7): base/7/x86_64/group_gz | 153 kB 00:00:00 중략 (7/7): epel/x86_64/primary_db | 6.9 MB 00:00:03 Resolving Dependencies --> Running transaction check 중략 ---> Package httpd.x86_64 0:2.4.6-93.el7.centos will be an update --> Processing Dependency: httpd-tools = 2.4.6-93.el7.centos for package: httpd-2.4.6-93.el7.centos.x86_64 --> Running transaction check ---> Package httpd-devel.x86_64 0:2.4.6-80.el7.centos will be updated 중략--> Finished Dependency Resolution Dependencies Resolved =========================================================================================================================================================================================================== Package Arch Version Repository Size =========================================================================================================================================================================================================== Updating: httpd x86_64 2.4.6-93.el7.centos base 2.7 M Updating for dependencies: httpd-devel x86_64 2.4.6-93.el7.centos 중략 Transaction Summary =========================================================================================================================================================================================================== Upgrade 1 Package (+4 Dependent packages) Total download size: 4.4 M Downloading packages: No Presto metadata available for base (1/5): httpd-devel-2.4.6-93.el7.centos.x86_64.rpm | 198 kB 00:00:00 중략 (5/5): httpd-2.4.6-93.el7.centos.x86_64.rpm | 2.7 MB 00:00:00 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 19 MB/s | 4.4 MB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Updating : httpd-tools-2.4.6-93.el7.centos.x86_64 1/10 중략 Verifying : httpd-manual-2.4.6-80.el7.centos.noarch 10/10 Updated: httpd.x86_64 0:2.4.6-93.el7.centos Dependency Updated: httpd-devel.x86_64 0:2.4.6-93.el7.centos httpd-manual.noarch 0:2.4.6-93.el7.centos httpd-tools.x86_64 0:2.4.6-93.el7.centos mod_ssl.x86_64 1:2.4.6-93.el7.centos Complete! [root@class14 ~]# rpm -qa | grep httpd httpd-manual-2.4.6-93.el7.centos.noarch httpd-2.4.6-93.el7.centos.x86_64 httpd-tools-2.4.6-93.el7.centos.x86_64 httpd-devel-2.4.6-93.el7.centos.x86_64
서비스 구동
# 별도의 설정 없이 구동을 하면 기본 값으로 실행된다. [root@class14 ~]# service start httpd Redirecting to /bin/systemctl start httpd.service # 또는 [root@class14 ~]# systemctl start httpd.service
서비스 구동 확인
[root@class14 ~]# netstat -nltp | grep 80 tcp6 0 0 :::80 :::* LISTEN 2411/httpd # 또는 [root@class14 ~]# netstat -nltp | grep httpd tcp6 0 0 :::80 :::* LISTEN 2411/httpd tcp6 0 0 :::443 :::* LISTEN 2411/httpd [root@class14 ~]#
접속이 안될 경우
※ 다양한 원인이 있을 수 있으나 linux 방화벽 (iptables, firewalld)에 의해 막히는 경우가 많다.
[root@class14 ~]# service firewalld stop Redirecting to /bin/systemctl stop firewalld.service # 또는 [root@class14 ~]# service iptables stop # CentOS6 이하, CentOS7 이상에서 firewalld 를 삭제하고 iptables를 구동 했을 때