Ceph Mon

  • By OpenStack Charmers
  • cloud
juju deploy ceph-mon
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Channel Version Base
latest/stable 19
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  • auth-supported | string

    Default: cephx

    Which authentication flavour to use. . Valid options are "cephx" and "none". If "none" is specified, keys will still be created and deployed so that it can be enabled later.

  • ceph-cluster-network | string

    The IP address and netmask of the cluster (back-side) network (e.g., . If multiple networks are to be used, a space-delimited list of a.b.c.d/x can be provided.

  • ceph-public-network | string

    The IP address and netmask of the public (front-side) network (e.g., . If multiple networks are to be used, a space-delimited list of a.b.c.d/x can be provided.

  • config-flags | string

    User provided Ceph configuration. Supports a string representation of a python dictionary where each top-level key represents a section in the ceph.conf template. You may only use sections supported in the template. . WARNING: this is not the recommended way to configure the underlying services that this charm installs and is used at the user's own risk. This option is mainly provided as a stop-gap for users that either want to test the effect of modifying some config or who have found a critical bug in the way the charm has configured their services and need it fixed immediately. We ask that whenever this is used, that the user consider opening a bug on this charm at http://bugs.launchpad.net/charms providing an explanation of why the config was needed so that we may consider it for inclusion as a natively supported config in the charm.

  • customize-failure-domain | boolean

    Setting this to true will tell Ceph to replicate across Juju's Availability Zone instead of specifically by host.

  • default-rbd-features | int

    Default RBD Features to use when creating new images. The value of this configuration option will be shared with consumers of the ``ceph-client`` interface and client charms may choose to add this to the Ceph configuration file on the units they manage. Example: rbd default features = 1 NOTE: If you have clients using the kernel RBD driver you must set this configuration option to a value corrensponding to the features the driver in your kernel supports. The kernel RBD driver tends to be multiple cycles behind the userspace driver available for libvirt/qemu. Nova LXD is among the clients depending on the kernel RBD driver. NOTE: If you want to use the RBD Mirroring feature you must either let this configuration option be the default or make sure the value you set includes the ``exclusive-lock`` and ``journaling`` features.

  • disable-pg-max-object-skew | boolean

    Openstack clouds that use ceph will typically start their life with at least one pool (glance) loaded with a disproportionately high amount of data/objects where other pools may remain empty. This can trigger HEALTH_WARN if mon_pg_warn_max_object_skew is exceeded but that is actually false positive.

  • expected-osd-count | int

    The number of OSDs expected to be deployed in the cluster. This value can influence the number of placement groups (PGs) to use for pools. The PG calculation is based either on the actual number of OSDs or this option's value, whichever is greater. The default value is '0', which tells the charm to only consider the actual number of OSDs. If the actual number of OSDs is less than three then this option must explicitly state that number.

  • fsid | string

    The unique identifier (fsid) of the Ceph cluster. . WARNING: this option should only be used when performing an in-place migration of an existing non-charm deployed Ceph cluster to a charm managed deployment.

  • harden | string

    Apply system hardening. Supports a space-delimited list of modules to run. Supported modules currently include os, ssh, apache and mysql.

  • key | string

    Key ID to import to the apt keyring to support use with arbitary source configuration from outside of Launchpad archives or PPA's.

  • loglevel | int

    Default: 1

    Mon and OSD debug level. Max is 20.

  • monitor-count | int

    Default: 3

    Number of ceph-mon units to wait for before attempting to bootstrap the monitor cluster. For production clusters the default value of 3 ceph-mon units is normally a good choice. . For test and development environments you can enable single-unit deployment by setting this to 1. . NOTE: To establish quorum and enable partition tolerance a odd number of ceph-mon units is required.

  • monitor-hosts | string

    A space-separated list of ceph mon hosts to use. This field is only used to migrate an existing cluster to a juju-managed solution and should otherwise be left unset.

  • monitor-secret | string

    The Ceph secret key used by Ceph monitors. This value will become the mon.key. To generate a suitable value use: . ceph-authtool /dev/stdout --name=mon. --gen-key . If left empty, a secret key will be generated. . NOTE: Changing this configuration after deployment is not supported and new service units will not be able to join the cluster.

  • nagios_additional_checks | string

    Dictionary describing additional checks. Key is a name of a check which will be visible in Nagios. Value is a string (regular expression) which is checked against status messages. . Example: . {'noout_set': 'noout', 'too_few_PGs': 'too few PGs', 'clock': 'clock skew', 'degraded_redundancy': 'Degraded data redundancy'} .

  • nagios_additional_checks_critical | boolean

    Whether additional checks report warning or error when their checks are positive.

  • nagios_check_num_osds | boolean

    Whether to report an error when number of known OSDs does not equal to the number of OSDs in or up.

  • nagios_context | string

    Default: juju

    Used by the nrpe-external-master subordinate charm. A string that will be prepended to instance name to set the hostname 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_degraded_thresh | float

    Default: 1.0

    Threshold for degraded ratio (0.1 = 10%)

  • nagios_misplaced_thresh | float

    Default: 1.0

    Threshold for misplaced ratio (0.1 = 10%)

  • nagios_raise_nodeepscrub | boolean

    Default: True

    Whether to report Critical instead of Warning when the nodeep-scrub flag is set.

  • nagios_recovery_rate | string

    Default: 1

    Recovery rate (in objects/s) below which we consider recovery to be stalled.

  • nagios_servicegroups | string

    A comma-separated list of nagios servicegroups. If left empty, the nagios_context will be used as the servicegroup.

  • no-bootstrap | boolean

    Causes the charm to not do any of the initial bootstrapping of the Ceph monitor cluster. This is only intended to be used when migrating from the ceph all-in-one charm to a ceph-mon / ceph-osd deployment. Refer to the Charm Deployment guide at https://docs.openstack.org/charm-deployment-guide/latest/ for more information.

  • permit-insecure-cmr | boolean

    The charm does not segregate access to pools from different models properly, this means that the correct charm settings can result with client model B having access to the data from model A.

  • pg-autotune | string

    Default: auto

    The default configuration for pg-autotune will be to automatically enable the module for new cluster installs on Ceph Nautilus, but to leave it disabled for all cluster upgrades to Nautilus. To enable the pg-autotune feature for upgraded clusters, the pg-autotune option should be set to 'true'. To disable the autotuner for new clusters, the pg-autotune option should be set to 'false'.

  • pgs-per-osd | int

    Default: 100

    The number of placement groups per OSD to target. It is important to properly size the number of placement groups per OSD as too many or too few placement groups per OSD may cause resource constraints and performance degradation. This value comes from the recommendation of the Ceph placement group calculator (http://ceph.com/pgcalc/) and recommended values are: . 100 - If the cluster OSD count is not expected to increase in the foreseeable future. 200 - If the cluster OSD count is expected to increase (up to 2x) in the foreseeable future. 300 - If the cluster OSD count is expected to increase between 2x and 3x in the foreseeable future.

  • prefer-ipv6 | boolean

    If True enables IPv6 support. The charm will expect network interfaces to be configured with an IPv6 address. If set to False (default) IPv4 is expected. . NOTE: these charms do not currently support IPv6 privacy extension. In order for this charm to function correctly, the privacy extension must be disabled and a non-temporary address must be configured/available on your network interface.

  • source | string

    Optional configuration to support use of additional sources such as: . - ppa:myteam/ppa - cloud:bionic-ussuri - cloud:xenial-proposed/queens - http://my.archive.com/ubuntu main . The last option should be used in conjunction with the key configuration option.

  • sysctl | string

    Default: { kernel.pid_max : 2097152, vm.max_map_count : 524288, kernel.threads-max: 2097152 }

    YAML-formatted associative array of sysctl key/value pairs to be set persistently. By default we set pid_max, max_map_count and threads-max to a high value to avoid problems with large numbers (>20) of OSDs recovering. very large clusters should set those values even higher (e.g. max for kernel.pid_max is 4194303).

  • use-direct-io | boolean

    Default: True

    Configure use of direct IO for OSD journals.

  • use-syslog | boolean

    If set to True, supporting services will log to syslog.