Re: Path monitoring support in s6-services
Am 17.02.21 um 10:26 schrieb Casper Ti. Vector: > On Wed, Feb 17, 2021 at 01:08:44PM +0530, billa chaitanya wrote: >> I am trying to start a service when a file/path is >> modified/touched/created.Do we have any mechanism in s6 that supports >> enabling a service up on monitoring a path? > > inotifyd (or something similar) + s6-svc (or s6-rc)? You can also write your own specialised daemon with a simple shell script a la inotifywait -q -m ... | while true; do # get the next event: event=$(head -1) ... done I am using this method in a production system. Cheers Ben
Re: Path monitoring support in s6-services
Since it requires individual instances of inotifyd for each service(s) [which depends on multiple files/paths modifications) to get started] Have you tried it and noticed an impact on your boot times? (AKA: "Profile, don't speculate.") -- Laurent
Re: Path monitoring support in s6-services
> > > What makes you think this would have a noticeable impact on your CPU > load? > Since it requires individual instances of inotifyd for each service(s) [which depends on multiple files/paths modifications) to get started] On Wed, Feb 17, 2021 at 5:36 PM Laurent Bercot wrote: > >> inotifyd (or something similar) + s6-svc (or s6-rc)? > >Thought of the same but I have many such services;Just thinking of cpu > >overhead during the initial boot up. > > What makes you think this would have a noticeable impact on your CPU > load? > > -- > Laurent > >
Re: Path monitoring support in s6-services
inotifyd (or something similar) + s6-svc (or s6-rc)? Thought of the same but I have many such services;Just thinking of cpu overhead during the initial boot up. What makes you think this would have a noticeable impact on your CPU load? -- Laurent
Re: Path monitoring support in s6-services
> > inotifyd (or something similar) + s6-svc (or s6-rc)? > Thought of the same but I have many such services;Just thinking of cpu overhead during the initial boot up. Thanks, Chaitnaya On Wed, Feb 17, 2021 at 2:57 PM Casper Ti. Vector wrote: > On Wed, Feb 17, 2021 at 01:08:44PM +0530, billa chaitanya wrote: > > I am trying to start a service when a file/path is > > modified/touched/created.Do we have any mechanism in s6 that supports > > enabling a service up on monitoring a path? > > inotifyd (or something similar) + s6-svc (or s6-rc)? > > -- > My current OpenPGP key: > RSA4096/0x227E8CAAB7AA186C (expires: 2022.09.20) > 7077 7781 B859 5166 AE07 0286 227E 8CAA B7AA 186C > >
Re: Path monitoring support in s6-services
On Wed, Feb 17, 2021 at 01:08:44PM +0530, billa chaitanya wrote: > I am trying to start a service when a file/path is > modified/touched/created.Do we have any mechanism in s6 that supports > enabling a service up on monitoring a path? inotifyd (or something similar) + s6-svc (or s6-rc)? -- My current OpenPGP key: RSA4096/0x227E8CAAB7AA186C (expires: 2022.09.20) 7077 7781 B859 5166 AE07 0286 227E 8CAA B7AA 186C
Path monitoring support in s6-services
Hi Team, I am trying to start a service when a file/path is modified/touched/created.Do we have any mechanism in s6 that supports enabling a service up on monitoring a path? Thanks, Chaitanya
