php 7 从源代码构建
尝试时
systemctl enable php-fpm.service
获取
The unit files have no [Install] section. They are not meant to be enabled
using systemctl.
Possible reasons for having this kind of units are:
1) A unit may be statically enabled by being symlinked from another unit's
.wants/ or .requires/ directory.
2) A unit's purpose may be to act as a helper for some other unit which has
a requirement dependency on it.
3) A unit may be started when needed via activation (socket, path, timer,
D-Bus, udev, scripted systemctl call, ...).
尝试时
chkconfig --levels 235 php-fpm on
获取相同的日志:)
更新：
不知何故，我设法从chkconfig开始，但我不记得如何。重新安装操作系统并使用PHP 7.0.6-dev.
由于您正在编译自己的PHP，因此需要创建单元/服务，因此您可以通过chkconfig进行操作，也可以尝试遵循一些准则，我建议您：
https://www.howtoforge.com/tutorial/how-to-install-php-7-on-debian/
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/System_Administrators_Guide/sect-Managing_Services_with_systemd-Unit_Files.html
第一个教程中的示例文件：
[Unit]
Description=The PHP 7 FastCGI Process Manager
After=network.target
[Service]
Type=simple
PIDFile=/opt/php-7.0.3/var/run/php-fpm.pid
ExecStart=/opt/php-7.0.3/sbin/php-fpm --nodaemonize --fpm-config /opt/php-7.0.3/etc/php-fpm.conf
ExecReload=/bin/kill -USR2 $MAINPID
[Install]
WantedBy=multi-user.target
我看到了您已经解决了问题的更新，但我会把它留在这里，因为它可以帮助更多的人！
现在，对于 php 7.3，我在构建 php 后使用这种方法：
1. cp /path-to-php-src/sapi/fpm/php-fpm.service /etc/systemd/system/php-fpm.service
2. systemctl enable php-fpm.service
文件内容与雷纳托·梅菲的答案相似