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-# Copyright 2015 Canonical Ltd.
-#
-# This file is part of the Cassandra Charm for Juju.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 3, as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranties of
-# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
-# PURPOSE. See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-options:
- # Install and upgrade charm related options
- extra_packages:
- type: string
- default: ""
- description: >
- Extra packages to install. A space delimited list of packages.
- package_status:
- default: "install"
- type: string
- description: >
- The status of service-affecting packages will be set to this
- value in the dpkg database. Useful valid values are "install"
- and "hold".
- install_sources:
- type: string
- description: >
- charm-helpers standard listing of package install sources.
- If you are using Datastax Enterprise, you will need to
- override one defaults with your own username and password.
- default: |
- - deb http://www.apache.org/dist/cassandra/debian 22x main
- - ppa:openjdk-r/ppa # For OpenJDK 8
- - ppa:stub/cassandra # For Python driver
- # - deb http://debian.datastax.com/community stable main
- # DSE requires you to register and add your username/password here.
- # - deb http://un:pw@debian.datastax.com/enterprise stable main
- install_keys:
- type: string
- description: >
- charm-helpers standard listing of package install source
- signing keys, corresponding to install_sources.
- default: |
- - null # ppa:stub/cassandra signing key added automatically.
- - null # Apache package signing key added automatically.
- - null # PPA package signing key added automatically.
- # - null # DataStack package signing key added automatically.
- http_proxy:
- type: string
- description: >
- Value for the http_proxy and https_proxy environment variables.
- This causes pip(1) and other tools to perform downloads via
- the proxy server. eg. http://squid.dc1.lan:8080
- default: ""
- # TODO: Add JNA
- # private_jna_url:
- # type: string
- # default: ""
- # description: >
- # URL for the private jna tar file. DSE requires JNA >= 3.4
- private_jre_url:
- type: string
- default: ""
- description: >
- URL for the private jre tar file. DSE requires
- Oracle Java SE 8 Server JRE (eg. server-jre-8u60-linux-x64.tar.gz).
- edition:
- type: string
- default: community
- description: >
- One of 'community' or 'dse'. 'community' uses the
- Apache Cassandra packages. 'dse' is for DataStax
- Enterprise. Selecting 'dse' overrides the jvm setting.
- jre:
- type: string
- default: openjdk
- description: >
- Which Java runtime environment to use. May be 'openjdk' or
- 'oracle'.
-
- # Storage configuration
- wait_for_storage_broker:
- type: boolean
- default: False
- description: >
- Do not start the service before external storage has been
- mounted using the block storage broker relation. If you do
- not set this and you relate the service to the storage
- broker, then your service will have started up using local
- disk, and later torn down and rebuilt when the external
- storage became available.
- data_file_directories:
- type: string
- default: data
- description: >
- Space delimited data directories. Use multiple data
- directories to split data over multiple physical hardware
- drive partitions. Paths are relative to /var/lib/cassandra
- or the block storage broker external mount point.
- commitlog_directory:
- type: string
- default: commitlog
- description: >
- Commit log directory. The path is relative to
- /var/lib/cassandra or the block storage broker external
- mount point.
- saved_caches_directory:
- type: string
- default: saved_caches
- description: >
- Saved caches directory. The path is relative to
- /var/lib/cassandra or the block storage broker external
- mount point.
- io_scheduler:
- type: string
- default: "noop"
- description: >
- Set kernel io scheduler for persistent storage.
- https://www.kernel.org/doc/Documentation/block/switching-sched.txt
-
-## units-to-update:
-## type: string
-## default: "all"
-## description: >
-## Comma separated list of unit numbers to update (i.e. modify
-## /etc setup and trigger cassandra restart on config-change or
-## upgrade-charm), or "all".
-
- # nrpe-external-master relation related options
- nagios_context:
- default: "juju"
- type: string
- description: |
- Used by the nrpe subordinate charms.
- A string that will be prepended to instance name to set the host name
- in nagios. So for instance the hostname would be something like:
- juju-myservice-0
- If you're running multiple environments with the same services in them
- this allows you to differentiate between them.
- nagios_servicegroups:
- default: ""
- type: string
- description: >
- A comma-separated list of nagios servicegroups.
- If left empty, the nagios_context will be used as the servicegroup
- nagios_heapchk_warn_pct:
- default: 80
- type: int
- description: >
- The pct of heap used to trigger a nagios warning
- nagios_heapchk_crit_pct:
- default: 90
- type: int
- description: >
- The pct of heap used to trigger a nagios critcal alert
- nagios_disk_warn_pct:
- default: 50
- type: int
- description: >
- The pct of data disk used to trigger a nagios warning
- nagios_disk_crit_pct:
- default: 25
- type: int
- description: >
- The pct of data disk used to trigger a nagios critcal alert
-
- # cassandra-env.sh related options
- # The default tuning has been chosen to be suitable for development
- # and test environments. The default tunings are expected to change
- # over time.
- max_heap_size:
- type: string
- default: '384M'
- description: >
- Total size of Java memory heap, for example 1G or 512M.
- If you set this, you should also set heap_newsize. The
- default is automatically tuned.
- heap_newsize:
- type: string
- default: '32M'
- description: >
- The size of the JVM's young generation in the heap. If you
- set this, you should also set max_heap_size. If in doubt,
- go with 100M per physical CPU core. The default is
- automatically tuned.
-
- # Cassandra.yaml related options
- cluster_name:
- type: string
- default: "juju"
- description: >
- Name of the Cassandra cluster. This is mainly used to
- prevent machines in one logical cluster from joining
- another. All Cassandra services you wish to cluster together
- must have the same cluster_name. This setting cannot be changed
- after service deployment.
- partitioner:
- default: Murmur3Partitioner
- type: string
- description: >
- The cassandra partitioner to use. Use Murmur3Partitioner,
- unless another is required for backwards compatibility.
- num_tokens:
- type: int
- default: 256
- description: Number of tokens per node.
-
- # Topology of the service in the cluster.
- datacenter:
- type: string
- default: "juju"
- description: >
- The node's datacenter used by the endpoint_snitch. e.g. "DC1".
- It cannot be changed after service deployment.
- rack:
- type: string
- default: ""
- description: >
- The rack used by the endpoint_snitch for all units in this
- service. e.g. "Rack1". This cannot be changed after deployment.
- It defaults to the service name. Cassandra will store replicated
- data in different racks whenever possible.
-
-
- # Networking options.
- native_transport_port:
- type: int
- default: 9042
- description: Native protocol port for native protocol clients.
- rpc_port:
- type: int
- default: 9160
- description: Thrift protocol port for legacy clients.
- storage_port:
- type: int
- default: 7000
- description: Cluster communication port
- ssl_storage_port:
- type: int
- default: 7001
- description: >
- Cluster secure communication port. TODO: Unused. configure SSL.
- authenticator:
- type: string
- default: PasswordAuthenticator
- description: >
- Authentication backend. Only PasswordAuthenticator and
- AllowAllAuthenticator are supported. You should only
- use AllowAllAuthenticator for legacy applications that
- cannot provide authentication credentials.
- authorizer:
- type: string
- default: AllowAllAuthorizer
- description: >
- Authorization backend, implementing IAuthorizer; used to limit
- access/provide permissions Out of the box, Cassandra provides
- AllowAllAuthorizer & CassandraAuthorizer
- - AllowAllAuthorizer allows any action to any user - set it to
- disable authorization.
- - CassandraAuthorizer stores permissions in
- system_auth.permissions table.
-
-
- # Tuning options.
- compaction_throughput_mb_per_sec:
- type: int
- default: 16
- description: >
- Throttles compaction to the given total throughput (in MB/sec)
- across the entire system. The faster you insert data, the faster
- you need to compact in order to keep the sstable count down,
- but in general, setting this to 16 to 32 times the rate you
- are inserting data is more than sufficient. Setting this to
- 0 disables throttling. Note that this account for all types
- of compaction, including validation compaction.
- stream_throughput_outbound_megabits_per_sec:
- type: int
- default: 200
- description: >
- Throttles all outbound streaming file transfers on nodes to the
- given total throughput in Mbps. This is necessary because Cassandra
- does mostly sequential IO when streaming data during bootstrap or
- repair, which can lead to saturating the network connection and
- degrading rpc performance. When unset, the default is 200 Mbps
- or 25 MB/s. 0 to disable throttling.
-
- tombstone_warn_threshold:
- type: int
- default: 1000
- description: >
- When executing a scan, within or across a partition, we
- need to keep the tombstones seen in memory so we can return
- them to the coordinator, which will use them to make sure
- other replicas also know about the deleted rows. With
- workloads that generate a lot of tombstones, this can cause
- performance problems and even exaust the server heap. Adjust
- the thresholds here if you understand the dangers and want
- to scan more tombstones anyway.
- tombstone_failure_threshold:
- type: int
- default: 100000
- description: >
- When executing a scan, within or across a partition, we need
- to keep the tombstones seen in memory so we can return them
- to the coordinator, which will use them to make sure other
- replicas also know about the deleted rows. With workloads
- that generate a lot of tombstones, this can cause
- performance problems and even exaust the server heap. Adjust
- the thresholds here if you understand the dangers and want
- to scan more tombstones anyway.