I just went through and updated my Ubuntu 14.04 80.7 cluster to 80.8 this morning. The package updates looked like they triggered _starts_ for some services (ceph-all, ceph-msd-all), but not restarts. ceph-mon and ceph-osd services were _not_ restarted, allowing me to restart them in the order I desired.
-SteveOn Mon, Feb 2, 2015 at 11:28 AM, Gregory Farnum <greg@xxxxxxxxxxx> wrote:
Oh, yeah, that'll hurt on a small cluster more than a large one. I'm not sure how much it matters, sorry.On Mon, Feb 2, 2015 at 8:18 AM Daniel Schneller <daniel.schneller@xxxxxxxxxxxxxxxx> wrote:_______________________________________________On 2015-02-02 16:09:27 +0000, Gregory Farnum said:
That said, for a point release it shouldn't matter what order stuff gets restarted in. I wouldn't worry about it. :)
That is good to know. One follow-up then: If the packets trigger restarts, they will most probably do so for *all* daemons virtually at once, right? So that means that all OSDs on that host will go down at the same time. That sounds like a not so good idea, taking 25% of the cluster down at the same time (provided I go host by host)?
Daniel
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