DeathVoteExpirationTimeout
getset
public TimeSpan DeathVoteExpirationTimeout Gets or sets the expiration time for votes in the membership table.
Property value
Votes expire after 2 minutes by default.
ClusterMembershipOptions Properties
Settings for cluster membership.
DefunctSiloCleanupPeriod
getset
public TimeSpan? DefunctSiloCleanupPeriod Gets or sets a value indicating whether defunct silo entries older than
ClusterMembershipOptions are removed. Cleanup is attempted when membership changes are observed and the current membership snapshot contains expired non-active entries, or when this period has elapsed since the last cleanup call. Set this value to null to disable expiration-based cleanup. Property value
Expiration-based cleanup is enabled by default.
DefunctSiloExpiration
getset
public TimeSpan DefunctSiloExpiration Gets or sets the period of time after which membership entries for defunct silos are eligible for removal. Valid only if
ClusterMembershipOptions is not null. Property value
Defunct silos are eligible for removal from membership after one week by default.
EnableIndirectProbes
getset
public bool EnableIndirectProbes Gets or sets a value indicating whether to enable probing silos indirectly, via other silos.
EvictWhenMaxJoinAttemptTimeExceeded
getset
public bool EvictWhenMaxJoinAttemptTimeExceeded Gets or sets a value indicating whether to enable membership eviction of silos when they remain in the
Joining or Created state for longer than ClusterMembershipOptions. ExtendProbeTimeoutDuringDegradation
getset
public bool ExtendProbeTimeoutDuringDegradation Gets or sets a value indicating whether to extend the effective
ClusterMembershipOptions value based upon current local health degradation. IAmAliveTablePublishTimeout
getset
public TimeSpan IAmAliveTablePublishTimeout Gets or sets the period between updating this silo's heartbeat in the membership table.
Property value
Publish an update every 30 seconds by default.
LivenessEnabled
getset
public bool LivenessEnabled Gets or sets a value indicating whether the silo liveness protocol is enabled (should be disabled only for testing). If a silo is suspected to be down, but this property is set to
false, the suspicions will not be propagated to the system or enforced. This property is intended for use only for testing and troubleshooting. In production, liveness should always be enabled. Property value
Liveness is enabled by default.
LocalHealthDegradationMonitoringPeriod
getset
public TimeSpan LocalHealthDegradationMonitoringPeriod Gets or sets the period between self-tests to log local health degradation status.
Property value
The local host will perform a self-test every ten seconds by default.
MaxDefunctSiloEntries
getset
public int? MaxDefunctSiloEntries Gets or sets the maximum number of defunct silo entries to retain in the membership table. When this limit is exceeded, the first active silo, selected by natural
SiloAddress sort order, asynchronously removes the oldest excess defunct entries from the membership table. Set this value to null to retain all defunct entries and disable threshold-based cleanup. Property value
Membership retains up to 25 defunct silo entries by default.
MaxJoinAttemptTime
getset
public TimeSpan MaxJoinAttemptTime Gets or sets the maximum amount of time to attempt to join a cluster before giving up.
Property value
Attempt to join for 5 minutes before giving up by default.
NumMissedProbesLimit
getset
public int NumMissedProbesLimit Gets or sets the number of missed probe requests from a silo that lead to suspecting this silo as down.
Property value
A silo will be suspected as being down if three probes are missed, by default.
NumMissedTableIAmAliveLimit
getset
public int NumMissedTableIAmAliveLimit Gets or sets the number of missed "I am alive" updates in the table from a silo that causes warning to be logged.
NumProbedSilos
getset
public int NumProbedSilos Gets or sets the number of silos each silo probes for liveness.
Property value
Each silo will actively monitor up to 10 other silos by default.
NumVotesForDeathDeclaration
getset
public int NumVotesForDeathDeclaration Gets or sets the number of non-expired votes that are needed to declare some silo as down (should be at most
ClusterMembershipOptions). Property value
Two votes are sufficient for a silo to be declared as down, by default.
ProbeTimeout
getset
public TimeSpan ProbeTimeout Gets or sets both the period between sending a liveness probe to any given host as well as the timeout for each probe.
Property value
Probes time out and a new probe is sent every 5 seconds by default.
TableRefreshTimeout
getset
public TimeSpan TableRefreshTimeout Gets or sets the period between fetching updates from the membership table.
Property value
The membership table is refreshed every 60 seconds by default.
UseLivenessGossip
getset
public bool UseLivenessGossip Gets or sets a value indicating whether membership updates are disseminated between hosts using gossip.
Property value
Membership updates are disseminated using gossip by default.