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Topic: Planning and setup
Learn: How to configure POSIX networking for Scylla
Audience: Developers, devops, integration testers
The Seastar framework used in Scylla can support two networking modes. For high-performance production workloads, use the Data Plane Development Kit (DPDK) for maximum performance on specific modern network hardware.
For ease of development, you can also use POSIX mode, which works on all physical and virtual network devices supported by your operating system.
The Linux “transparent hugepages” feature is recommended, but not
required, in POSIX mode to minimize overhead on memory allocations. The
value of /sys/kernel/mm/transparent_hugepage/enabled should be
always or madvise. See your Linux distribution’s documentation
for instructions on how to enable transparent hugepages.
For a single node, the firewall will need to be set up to allow TCP on the following ports.
POSIX mode is the default, in /etc/sysconfig/scylla-server. Check
that NETWORK_MODE is set to posix.
# choose following mode: virtio, dpdk, posix
NETWORK_MODE=posix.
The ETHDRV option is ignored in POSIX mode.
Cassandra: configuring firewall port access
How to use, monitor, and disable transparent hugepages in Red Hat Enterprise Linux 6