为编译安装的 httpd 服务，编写 service unit 文件
缑兴贤
- 编译安装 httpd
# 安装相关工具
[root@localhost ~]# yum -y install gcc openssl-devel pcre-devel apr-devel apr-util-devel
# 下载安装包
[root@localhost ~]# wget https://downloads.apache.org/httpd/httpd-2.4.43.tar.bz2
# 解压
[root@localhost ~]# tar -xvf httpd-2.4.43.tar.bz2
# 安装
[root@localhost ~]# cd httpd-2.4.43
[root@localhost httpd-2.4.43]# ./configure --prefix=/apps/httpd24 --sysconfdir=/etc/httpd --enable-ssl --enable-so
[root@localhost httpd-2.4.43]# make && make install
# 启动服务
[root@localhost ~]# /apps/httpd24/bin/apachectl start
# 测试
[root@localhost ~]# curl 127.0.0.1
<html><body><h1>It works!</h1></body></html>
# 启动服务（停止服务，否则后面用 systemctl 无法启动）
[root@localhost ~]# /apps/httpd24/bin/apachectl stop
- 创建 unit 文件
[root@localhost ~]# vim /usr/lib/systemd/system/httpd.service
# 填写以下内容
[Unit]
Description=Start httpd
[Service]
Type=simple
EnvironmentFile=/etc/httpd/httpd.conf
ExecStart=/apps/httpd24/bin/httpd -k start -DFOREGROUND
ExecReload=/apps/httpd24/bin/httpd -k graceful
ExecStop=/bin/kill -WINCH ${MAINPID}
[Install]
WantedBy=multi-user.target
# 重新加载 unit 文件
[root@localhost ~]# systemctl daemon-reload
# 启动服务
[root@localhost ~]# systemctl start httpd
# 查看状态
[root@localhost ~]# systemctl status httpd
● httpd.service - Start httpd
Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
Active: active (running) since Tue 2020-06-23 10:37:11 CST; 17min ago
Main PID: 39492 (httpd)
CGroup: /system.slice/httpd.service
├─39492 /apps/httpd24/bin/httpd -k start -DFOREGROUND
├─39493 /apps/httpd24/bin/httpd -k start -DFOREGROUND
├─39494 /apps/httpd24/bin/httpd -k start -DFOREGROUND
└─39495 /apps/httpd24/bin/httpd -k start -DFOREGROUND
Jun 23 10:37:11 localhost.localdomain systemd[1]: Started Start httpd.
# 访问（运行正常）
[root@localhost ~]# curl 127.0.0.1
<html><body><h1>It works!</h1></body></html>
# 停止服务
[root@localhost ~]# systemctl stop httpd
# 设置开机启动
[root@localhost ~]# systemctl enable httpd
Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /etc/systemd/system/httpd.service.
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