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by _delirium
4289 days ago
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As an init system it works fine, but you do end up having to find or invent a bunch of additional stuff if you want similar functionality to what's driving some of the systemd use-cases. The result might still be better (I haven't done a detailed architectural comparison), but you do need something. For example one of the things I find useful about the "systemd way" of things is that it provides, finally, a story about how to apply cgroups to services in a sane way. The kernel provides the APIs, but actually using them from userspace was not fun previously, with multiple incompatible systems, largely based on tangles of shell scripts that had broken corner cases. With FreeBSD, my impression is that manual shell scripting is still the norm. Integrating RCTL (FreeBSD's resource-limiting facility) with service management basically consists of manually writing in a bunch of imperative calls to RCTL into scripts. There's no way to configure services with limits declaratively, ensure the right thing happens when services are started/stopped, etc., precisely because there's no integration between the RCTL facility and the process-management or init facilities. Or at least I haven't found a way. The closest is that if you need such integration only for jails, you do have the option of third-party "monolithic" management systems, such as CBSD. |
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I will also add that managing disparate platforms is never a reality from experience. There are perhaps two core platforms at a company and they are migrated together in blocks, all together. For us, we have a couple of legacy Ubuntu machines that are being canned this month. Everything else is Windows 2012 R2 and FreeBSD 10.
The "systemd way" is to provide a monolithic abstraction over many things with a DBus API. It's the equivalent of adding WMI and a registry to a Unix platform i.e. it's against the fundamental tenets of the operating system. Having managed windows systems for years, this is really not something I want to see. Time will tell, but if I'm not right about that then I'll eat all three of my hats.
And yes I have experience with systemd as well through evaluation of RHEL7. Within two hours, I'd hit a wall with timedatectl enabling NTP on the machine. The steps to debug the mess were horrible and the issue eventually just spontaneously disappeared.
That's reminiscent of the stateful nature of windows which brings back many years of pain in the 1990's and 00's for me.