我已经为我的守护进程创建了一个RPM包，在安装时在/etc/init.d/下创建服务初始化脚本现在我想将这个RPM包移植到CentOS7.1，并使用systemd框架通过boot启动服务，以及通过admin通过start/stop命令启动服务。
我找不到任何教程。请帮助。
编辑:我尝试了msuchy给的建议。
我试过了，这是我的观察
基于sysV的框架(CentOS6.5)
[root@adil work]# /etc/init.d/daemon_script status Service daemon: Stopped [root@adil work]# /etc/init.d/daemon_script start Starting daemon: Initializing daemon... [ OK ] [root@adil work]# [root@adil work]# /etc/init.d/daemon_script status Service daemon: Running [root@adil work]# [root@adil work]# /etc/init.d/daemon_script stop Shutting down parent daemon: [ OK ] [root@adil work]# /etc/init.d/daemon_script status Service daemon: Stopped [root@adil work]#
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在基于systemd的框架上，我在CentOS7.1上安装了相同的RPM
[root@localhost x86_64]# /etc/init.d/daemon_script Usage: /etc/init.d/daemon_script {start|stop|restart|status} [root@localhost x86_64]# /etc/init.d/daemon_script start Starting daemon_script (via systemctl): Warning: Unit file of daemon_script.service changed on disk, 'systemctl daemon-reload' recommended. Job for daemon_script.service failed. See 'systemctl status daemon_script.service' and 'journalctl -xn' for details. [FAILED] [root@localhost x86_64]# systemctl daemon-reload [root@localhost x86_64]# systemctl status daemon_script.service daemon_script.service - SYSV: start and stop Test daemon service. Loaded: loaded (/etc/rc.d/init.d/daemon_script) Active: failed (Result: exit-code) since Fri 2015-09-11 15:30:44 IST; 32s ago
Sep 11 15:30:44 localhost.localdomain systemd[1]: Starting SYSV: start and st... Sep 11 15:30:44 localhost.localdomain systemd[1]: daemon_script.service: cont... Sep 11 15:30:44 localhost.localdomain systemd[1]: Failed to start SYSV: start... Sep 11 15:30:44 localhost.localdomain systemd[1]: Unit daemon_script.service ... Hint: Some lines were ellipsized, use -l to show in full. [root@localhost x86_64]# systemctl status daemon_script.service -l daemon_script.service - SYSV: start and stop Test daemon service. Loaded: loaded (/etc/rc.d/init.d/daemon_script) Active: failed (Result: exit-code) since Fri 2015-09-11 15:30:44 IST; 46s ago
Sep 11 15:30:44 localhost.localdomain systemd[1]: Starting SYSV: start and stop Test daemon service.... Sep 11 15:30:44 localhost.localdomain systemd[1]: daemon_script.service: control process exited, code=exited status=203 Sep 11 15:30:44 localhost.localdomain systemd[1]: Failed to start SYSV: start and stop Test daemon service.. Sep 11 15:30:44 localhost.localdomain systemd[1]: Unit daemon_script.service entered failed state. [root@localhost x86_64]#
journalctl -xn的输出
-- Logs begin at Fri 2015-09-11 14:50:35 IST, end at Fri 2015-09-11 15:40:01 IST. -- Sep 11 15:31:03 localhost.localdomain systemd[1]: [/usr/lib/systemd/system/dm-event.socket:10] Unknown lvalue 'RemoveOnStop' in section 'Socket' Sep 11 15:39:33 localhost.localdomain systemd[1]: Starting SYSV: start and stop Test daemon service.... -- Subject: Unit daemon_script.service has begun with start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit daemon_script.service has begun starting up. Sep 11 15:39:33 localhost.localdomain systemd[8509]: Failed at step EXEC spawning /etc/rc.d/init.d/daemon_script: Exec format error -- Subject: Process /etc/rc.d/init.d/daemon_script could not be executed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- The process /etc/rc.d/init.d/daemon_script could not be executed and failed. -- -- The error number returned while executing this process is 8. Sep 11 15:39:33 localhost.localdomain systemd[1]: daemon_script.service: control process exited, code=exited status=203 Sep 11 15:39:33 localhost.localdomain systemd[1]: Failed to start SYSV: start and stop Test daemon service.. -- Subject: Unit daemon_script.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit daemon_script.service has failed. -- -- The result is failed. Sep 11 15:39:33 localhost.localdomain systemd[1]: Unit daemon_script.service entered failed state. Sep 11 15:40:01 localhost.localdomain systemd[1]: Created slice user-0.slice. -- Subject: Unit user-0.slice has finished start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit user-0.slice has finished starting up. -- -- The start-up result is done. Sep 11 15:40:01 localhost.localdomain systemd[1]: Starting Session 7 of user root. -- Subject: Unit session-7.scope has begun with start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit session-7.scope has begun starting up. Sep 11 15:40:01 localhost.localdomain systemd[1]: Started Session 7 of user root. -- Subject: Unit session-7.scope has finished start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit session-7.scope has finished starting up. -- -- The start-up result is done. Sep 11 15:40:01 localhost.localdomain CROND[8528]: (root) CMD (/usr/lib64/sa/sa1 1 1) [root@localhost x86_64]#
您不需要迁移您的脚本。
这可能是更好的，你可以利用一些有趣的功能Systemd，你的文件会更小。但是需要迁移的是而不是。Systemd与SysV init文件也能正常工作。
你无法在CentOS 7安装中找到任何SysV init文件，因为Red Hat包程序(创建CentOS的人)投入了大量精力来打包并将所有SysV文件迁移到单元文件中。但是你不需要。
你只需要做一个任务。放置新的SysV文件后，必须使用
重新加载systemd管理器配置# systemctl daemon-reload
就这些。我给你们举个小例子
# cat /etc/init.d/foo
#!/usr/bin/sh
echo ahoy
# chmod a+x /etc/init.d/foo
# systemctl start foo
Failed to start foo.service: Unit foo.service failed to load: No such file or directory.
# systemctl daemon-reload
# systemctl start foo
# journalctl -xn
-- Subject: Unit foo.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit foo.service has finished starting up.
--
-- The start-up result is done.
# service foo start
ahoy
所以你可以使用所有的命令(chkconfig, service)，因为你习惯从CentOS 6。当你有时间的时候，你可以学习man systemd.unit(5)和一堆其他手册页(参见该手册页的"see ALSO")。