When starting scylla daemon as non-root the initialization fails
because standard /var/lib/scylla is not accessible by regular users.
Making the default dir accessible for user is not very convenient
either, as it will cause conflicts if two or more instances of scylla
are in use.
This problem can be resolved by specifying --commitlog-directory,
--data-file-directories, etc on start, but it's too much typing. I
propose to revive Nadav's --home option that allows to move all the
directories under the same prefix in one go.
Unlike Nadav's approach the --workdir option doesn't do any tricky
manipulations with existing directories. Insead, as Pekka suggested,
the individual directories are placed under the workir if and only
if the respective option is NOT provided. Otherwise the directory
configuration is taken as is regardless of whether its absolute or
relative path.
The values substutution is done early on start. Avi suggested that
this is unsafe wrt HUP config re-read and proper paths must be
resolved on the fly, but this patch doesn't address that yet, here's
why.
First of all, the respective options are MustRestart now and the
substitution is done before HUP handler is installed.
Next, commitlog and data_file values are copied on start, so marking
the options as LiveUpdate won't make any effect.
Finally, the existing named_value::operator() returns a reference,
so returning a calculated (and thus temporary) value is not possible
(from my current understanding, correct me if I'm wrong). Thus if we
want the *_directory() to return calculated value all callers of them
must be patched to call something different (e.g. *_directory.get() ?)
which will lead to more confusion and errors.
Changes v3:
- the option is --workdir back again
- the existing *directory are only affected if unset
- default config doesn't have any of these set
- added the short -W alias
Changes v2:
- the option is --home now
- all other paths are changed to be relative
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
Message-Id: <20191119130059.18066-1-xemul@scylladb.com>
Mention on the top-level README.md that Scylla by default is compatible
with Cassandra, but also has experimental support for DynamoDB's API.
Provide links to alternator/alternator.md and alternator/getting-started.md
with more information about this feature.
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Message-Id: <20190911080913.10141-1-nyh@scylladb.com>
Building on Ubuntu 18 or 19 following the current build instructions
doesn't work. Add information about a few pitfalls. Switch README.md
to recommending dbuild and move the details to HACKING.md.
Message-Id: <20190520152738.GA15198@atlas>
Replace stdx::optional and stdx::string_view with the C++ std
counterparts.
Some instances of boost::variant were also replaced with std::variant,
namely those that called seastar::visit.
Scylla now requires GCC 8 to compile.
Signed-off-by: Duarte Nunes <duarte@scylladb.com>
Message-Id: <20190108111141.5369-1-duarte@scylladb.com>
This change adds the start of what will hopefully be a continually evolving and
improving document for helping developers and contributors to get started with
Scylla development.
The first part of the document is general advice and information that is broadly
applicable.
The second part is an opinionated example of a particular work-flow and set of
tools. This is intended to serve as a starting point and inspire contributors to
develop their own work-flow.
The section on branching is marked "TODO" for now, and will be addressed by a
subsequent change.
Signed-off-by: Jesse Haber-Kucharsky <jhaberku@scylladb.com>
Message-Id: <470a542a92aff20d6205fb94b3fb26168735ae6f.1499319310.git.jhaberku@scylladb.com>
python3 needs to install pyparsing excplicitely. This adds the
installation of python3-pyparsing to the require dependencies in the
README.md
Signed-off-by: Amnon Heiman <amnon@scylladb.com>
It's just a waste of time to find them manually
when compiling ScyllaDB on a fresh install: add them.
Also fix the ninja-build name.
Signed-off-by: Benoît Canet <benoit@scylladb.com>
Scylla needs thrift and antlr3 which are not provided by ubuntu. We need
to compile them from source in order to build scylla. For now, let's
only support build on Fedora.
Add a Dockerfile for building a ScyllaDB Docker image. The image is
based on Fedora 22 and ScyllaDB is installed from our RPM repository.
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
We don't use this module and it's compilation is broken in DPDK 2.0.0
against Linux kernels 4.0.x.
Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
While reading the file to see the correct functioning of the rescue clause,
I have noticed a small syntax error in the example code.
Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>
- Define MARKER type if not defined.
- Adjust the Tx zero-copy to the rte_mbuf layout in DPDK 1.7.x.
- README.md:
- Bump up the DPDK latest version to 1.8.0.
- Add a new DPDK configuration description.
Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Run the build command directly in docker, using a shell function, instead
of opening a shell. Forward the user/group IDs so the build artifacts belong
to the user, not root.
