Sunny Verma Hacluster

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• cluster_count | int

  Default: 2

  Number of peer units required to bootstrap cluster services. . If less that 3 is specified, the cluster will be configured to ignore any quorum problems; with 3 or more units, quorum will be enforced and services will be stopped in the event of a loss of quorum.

• corosync_bindiface | string

  Default network interface on which HA cluster will bind to communication with the other members of the HA Cluster.

• corosync_key | string

  Default: 64RxJNcCkwo8EJYBsaacitUvbQp5AW4YolJi5/2urYZYp2jfLxY+3IUCOaAUJHPle4Yqfy+WBXO0I/6ASSAjj9jaiHVNaxmVhhjcmyBqy2vtPf+m+0VxVjUXlkTyYsODwobeDdO3SIkbIABGfjLTu29yqPTsfbvSYr6skRb9ne0=

  This value will become the Corosync authentication key. To generate a suitable value use: . sudo corosync-keygen sudo cat /etc/corosync/authkey | base64 -w 0 . This configuration element is mandatory and the service will fail on install if it is not provided. The value must be base64 encoded.

• corosync_mcastaddr | string

  Default: 226.94.1.1

  Multicast IP address to use for exchanging messages over the network. If multiple clusters are on the same bindnetaddr network, this value can be changed.

• corosync_mcastport | int

  Default multicast port number that will be used to communicate between HA Cluster nodes.

• corosync_transport | string

  Default: multicast

  Two supported modes are multicast (udp) or unicast (udpu)

• debug | boolean

  Enable debug logging

• maas_credentials | string

  MAAS credentials (required for STONITH).

• maas_source | string

  Default: ppa:maas/stable

  PPA for python3-maas-client: . - ppa:maas/stable - ppa:maas/next . The last option should be used in conjunction with the key configuration option. Used when service_dns is set on the primary charm for DNS HA

• maas_url | string

  MAAS API endpoint (required for STONITH).

• monitor_host | string

  One or more IPs, separated by space, that will be used as a saftey check for avoiding split brain situations. Nodes in the cluster will ping these IPs periodicaly. Node that can not ping monitor_host will not run shared resources (VIP, shared disk...).

• monitor_interval | string

  Default: 5s

  Time period between checks of resource health. It consists of a number and a time factor, e.g. 5s = 5 seconds. 2m = 2 minutes.

• 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 host name in nagios. So for instance the hostname would be something like: . juju-postgresql-0 . If you're running multiple environments with the same services in them this allows you to differentiate between them.

• nagios_servicegroups | string

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

• netmtu | int

  Specifies the corosync.conf network mtu. If unset, the default corosync.conf value is used (currently 1500). See 'man corosync.conf' for detailed information on this config option.

• 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.

• stonith_enabled | string

  Default: False

  Enable resource fencing (aka STONITH) for every node in the cluster. This requires MAAS credentials be provided and each node's power parameters are properly configured in its invenvory.