options: debug: type: boolean default: False description: Enable debug logging prefer-ipv6: type: boolean default: False description: | 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. corosync_transport: type: string default: "unicast" description: | Two supported modes are multicast (udp) or unicast (udpu) corosync_mcastaddr: type: string default: 226.94.1.1 description: | 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. Only used when corosync_transport = multicast. corosync_bindiface: type: string default: description: | Default network interface on which HA cluster will bind to communication with the other members of the HA Cluster. Defaults to the network interface hosting the units private-address. Only used when corosync_transport = multicast. corosync_mcastport: type: int default: description: | Default multicast port number that will be used to communicate between HA Cluster nodes. Only used when corosync_transport = multicast. corosync_key: type: string default: "64RxJNcCkwo8EJYBsaacitUvbQp5AW4YolJi5/2urYZYp2jfLxY+3IUCOaAUJHPle4Yqfy+WBXO0I/6ASSAjj9jaiHVNaxmVhhjcmyBqy2vtPf+m+0VxVjUXlkTyYsODwobeDdO3SIkbIABGfjLTu29yqPTsfbvSYr6skRb9ne0=" description: | 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. service_start_timeout: type: int default: 180 description: | Systemd override value for corosync and pacemaker service start timeout in seconds. Set value to -1 turn off timeout for the services. service_stop_timeout: type: int default: 60 description: | Systemd override value for corosync and pacemaker service stop timeout seconds. Set value to -1 turn off timeout for the services. stonith_enabled: type: string default: 'False' description: | 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 inventory. maas_url: type: string default: description: MAAS API endpoint (required for STONITH). maas_credentials: type: string default: description: MAAS credentials (required for STONITH). maas_source: type: string default: ppa:maas/stable description: | 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. cluster_count: type: int default: 3 description: | 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. It is best practice to set this value to the expected number of units to avoid potential race conditions. monitor_host: type: string default: description: | One or more IPs, separated by space, that will be used as a safety check for avoiding split brain situations. Nodes in the cluster will ping these IPs periodically. Node that can not ping monitor_host will not run shared resources (VIP, shared disk...). monitor_interval: type: string default: 5s description: | Time period between checks of resource health. It consists of a number and a time factor, e.g. 5s = 5 seconds. 2m = 2 minutes. netmtu: type: int default: description: | 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. # Monitoring config nagios_context: type: string default: "juju" description: | 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: type: string default: "" description: | A comma-separated list of nagios servicegroups. If left empty, the nagios_context will be used as the servicegroup.