Date: Mon, 31 Aug 2015 10:59:04 +0300 From: Pavel Timofeev <timp87@gmail.com> To: Allan Jude <allanjude@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: How to control and setup service? Message-ID: <CAAoTqfscq6DVc66pPcoeZ8y0J_oFtCkSD=W47fk30dnpN2nU8g@mail.gmail.com> In-Reply-To: <55E1CA2D.5020203@freebsd.org> References: <CAAoTqfvxUznJp%2BtguAaYQ=5HfKXTG%2BGxY644wvqm4e9=E8WuHw@mail.gmail.com> <55DF261C.80009@freebsd.org> <20150827200534.GH16003@e-new.0x20.net> <CAAoTqfthyGatRokfv-umxjxNp3Qj9xE7A7veDFjQE%2B0PNUdDcA@mail.gmail.com> <CAAoTqfvHfZpdE7QcVGx_BWabdXN68XOGWOcJM33VoKfR7j6Dhw@mail.gmail.com> <55E086D3.1040700@freebsd.org> <CAAoTqfvGXevDtzHEevzuS_kwaezrJftQaY2R4H9UxNnBcEBYfg@mail.gmail.com> <CAAoTqfszP7a1ULNgZO43H_wTzjZu_kNj0n_kY5Skyj85FYUdNg@mail.gmail.com> <55E1803E.7080706@freebsd.org> <55E1CA2D.5020203@freebsd.org>
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2015-08-29 18:05 GMT+03:00 Allan Jude <allanjude@freebsd.org>: > On 2015-08-29 05:49, Stefan Esser wrote: >> Am 28.08.2015 um 18:51 schrieb Pavel Timofeev: >>> Sorry for top posting! It's pretty hard to write email walking under >>> heavy rain and umbrella. >>> So, I talked about special key, not default behaviour. >>> Let me give you an example. >>> You got a server (or ten) which was/were somehow configured before you. >>> You want to reconfigure it/them. You don't care how and where it's >>> already configured, you just want to set particular rcvars and be sure >>> that no other rcvars are set. >>> >>> Before you came it was: >>> mysql_enable="YES/NO" # no matter >>> mysql_datadir="/mycozystorage/db/mysql" >>> mysql_defaults_extra_file="/mycozystorage/mysql/my.cnf" >>> mysql_plugin_dir="/somewhere/lib/mysql/plugin" >>> mysql_log_error="/mycozystorage/db/mysql/hostname.err" >>> >>> then you run something like (look at -k key) >>> # service -k mysql-server enable set datadir "/mysqldb" log_error >>> "/mysqllogs/hostname.err" >>> it becomes >>> mysql_enable="YES" >>> mysql_datadir="/mysqldb" >>> mysql_log_error="/mysqllogs/hostname.err" >>> >>> I. e. sets what requested and deletes rcvars which was not requested. >> >> I think that the removal of the previous config state should not come >> as the side-effect of some "set" command. >> >> I'd rather introduce a now verb for this purpose, which has the effect >> of clearing all previous settings for a service, instead of overloading >> the "set" operation. >> >> E.g.: >> >> # service mysql-server clearconfig >> >> Not sure about the best command name to use, it could also be "clean" >> or "initconfig" or "defaultconfig". The semantics is that all the >> rc.conf assignments for thise service are removed (including the >> enable line) and the defaults from defaults/rc.conf become effective >> again. >> >> Regards, STefan >> _______________________________________________ >> freebsd-hackers@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-hackers >> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >> > > I agree that that is a better design, as I would almost never actually > want to remove those extra settings, and if it happened unexpectedly, I > would be quite upset. I suggested special key for that, so it can't happen unexpectedly, IMO. > > -- > Allan Jude >
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