I'm not sure offhand. From my perspective I'd triple check what the
path/file it's trying to open is (add a printf or something), else you're
in container/kube territory and that's a bit beyond me. I assume it logs
something on policy violations, or can be made to do so.
On Mon, 9 Dec 2019, David Karlsen wrote:
> No. It is there and writable
>
> man. 9. des. 2019 kl. 21:32 skrev dormando <dorma...@rydia.net>:
> Is the directory missing?
>
> On Mon, 9 Dec 2019, David Karlsen wrote:
>
> > OK, I hacked it together apt-installing some shared libs.With the
> patch applied I get:
> >
> > k logs test-memcached-0
> > failed to open file for mmap: No such file or directory
> >
> > Which is a bit strange - should not the file be created dynamically
> if it does not exist?
> >
> > fredag 6. desember 2019 23.51.38 UTC+1 skrev Dormando følgende:
> > It's going to use some caps (opening files, mmap'ing them,
> shared memory,
> > etc). I don't know what maps to which specific thing.
> >
> > That error looks like an omission on my part..
> >
> > mmap_fd = open(file, O_RDWR|O_CREAT, S_IRWXU);
> > if (ftruncate(mmap_fd, limit) != 0) {
> > perror("ftruncate failed");
> > abort();
> > }
> >
> > missing the error check after open.
> >
> > Try adding a:
> >
> > if (mmap_fd == -1) {
> > perror("failed to open file for mmap");
> > abort();
> > }
> >
> > between the open and if (ftruncate) lines, which will give you
> the real
> > error. I'll get that fixed upstream.
> >
> > On Fri, 6 Dec 2019, David Karlsen wrote:
> >
> > > Does memcached use any of these
> capabilities:https://unofficial-kubernetes.readthedocs.io/en/latest/concepts/policy/container-capabilities/
> ?
> > >
> > >
> > > fre. 6. des. 2019 kl. 16:39 skrev David Karlsen
> <da...@davidkarlsen.com>:
> > > So far I am stuck on:
> > > k logs test-memcached-0
> > > ftruncate failed: Bad file descriptor
> > >
> > >
> > > - memcached
> > > - -m 768m
> > > - -I 1m
> > > - -v
> > > - -e /cache-state/memory_file
> > >
> > > -vvv does not reveal anything interesting.
> > > What could be the cause of this?
> > >
> > > lørdag 30. november 2019 18.03.23 UTC+1 skrev David Karlsen
> følgende:
> > > Reading
> https://github.com/memcached/memcached/wiki/WarmRestart it is a bit unclear
> to me if the mount *has* to be tmpfs backed, or it can be a
> normal
> > > fileystem like xfs.
> > > We are looking into running memcached through
> Kubernetes/containers - and as a tmpfs volume would be wiped on pod-recreation
> > >
> > > --
> > >
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> > >
> > >
> > >
> > > --
> > > --
> > > David J. M. Karlsen - http://www.linkedin.com/in/davidkarlsen
> > >
> > > --
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