【转载】Scylla on CentOS 7
Use these steps to install Scylla using Yum repositories on CentOS.
Prerequisites
- CentOS 7.3 or later, for the 64-bit x86_64 architecture.
- Yum package management application installed.
- ABRT conflict with Scylla coredump configuration. Remove it before installing Scylla: sudo yum remove -y abrt
- Root or sudo access to the system.
Make sure that all the relevant ports are open.
For server configuration, see documentation on recommendations for high performance.
Scylla is supported on CentOS versions 7.3 or later. There is no support for CentOS version 6.x and earlier.
If you are upgrading from an older Scylla version, make sure to follow the upgrade guide.
Procedure
$ sudo yum install epel-release
Install a repo file: Add the Scylla RPM repo to your system, check the RPM content
Scylla 3.0 (recommended) Repository for RHEL/CentOS 7 and above
sudo curl -o /etc/yum.repos.d/scylla.repo -L http://repositories.scylladb.com/scylla/repo/93495f33-6092-45c3-a5cb-718bd237e641/centos/scylladb-3.0.repo
More Versions
install packages
$ sudo yum install scyllaFor a specific patch version, for example 1.7.1
$ sudo yum install scylla-1.7.1
Configure and run Scylla on CentOS
Configure Scylla
Configure the /etc/scylla/scylla.yaml file with the following parameters:
| Item | Content |
| cluster_name | Name of the cluster, all the nodes in the cluster must have the same name |
| seeds | Seed nodes are used during startup to bootstrap the gossip process and join the cluster |
| listen_address | IP address that the Scylla use to connect to other Scylla nodes in the cluster |
| rpc_address | IP address of interface for client connections (Thrift, CQL) |
More information regarding the scylla.yaml file.
Scylla setup
Run the scylla_setup script to tune the system settings
sudo scylla_setup
This script invokes a set of scripts to configure several operating system settings, like setting RAID0 and XFS filesystem. It also runs a short (up to a few minutes) benchmark on your storage and generates the /etc/scylla.d/io.conf configuration file. When the file is ready, you can start Scylla (see below). Scylla will not run without XFS or io.conf file. To bypass this check, set Scylla to developer mode.
Run Scylla as a service (if not already running)
sudo systemctl start scylla-server
run nodetool
nodetool status
run cqlsh
cqlsh
Run cassandra-stress
cassandra-stress write -mode cql3 native
Monitoring
It is highly recommended to have a Scylla monitoring stack in place. For more on how to setup Scylla monitoring with Grafana here
Reference
Scylla servers set up using this method have the system configuration covered on System Configuration Guide already applied, by scripts included with the RPM packages. See the guide for a complete reference on settings used