wsrep Provider Options for MariaDB Enterprise Server 10.5

This page is part of MariaDB's Documentation.

The parent of this page is: Reference for MariaDB Enterprise Server 10.5

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Overview

Overview

The following options can be set in the wsrep_provider_options system variable to control MariaDB Enterprise Cluster.

Option	Description	Dynamic
base_dir	Specifies the data directory	NO
base_host	Global variable for internal use only	NO
base_port	Global variable for internal use only	NO
cert.length_check	No default	NO
cert.log_conflicts	Log details of certification failures	YES
cert.max_length	No default	NO
cert.optimistic_pa	Controls parallel applying of replica actions	YES
dbug	Default: "" (an empty string)	YES
debug	Enable debugging	YES
evs.auto_evict	Defines how many entries the node allows for given a delayed node before triggering the auto eviction protocol	NO
evs.causal_keepalive_period	For developer use only	NO
evs.debug_log_mask	Controls EVS debug logging when wsrep_debug is in use	YES
evs.delay_margin	Defines how long the node allows response times to deviate before adding an entry to the delayed list	NO
evs.delayed_keep_period	Defines how long the node requires a delayed node to remain responsive before it removes an entry from the delayed list	NO
evs.evict	Sets the point in which the cluster triggers manual eviction to a certain node value	NO
evs.inactive_check_period	Defines how frequently the node should check for peer inactivity	NO
evs.inactive_timeout	Defines a hard limit on node inactivity	NO
evs.info_log_mask	Defines additional logging options for the EVS Protocol	NO
evs.install_timeout	Defines the timeout for install message acknowledgments. This parameter replaces `evs.consensus_timeout`.	YES
evs.join_retrans_period	Defines how often the node retransmits EVS join messages	YES
evs.keepalive_period	Defines how often the node emits keepalive signals	NO
evs.max_install_timeouts	Defines the number of membership install rounds to try before giving up	NO
evs.send_window	Defines the maximum number of packets at a time in replication	YES
evs.stats_report_period	Control period of EVS statistics reporting	NO
evs.suspect_timeout	Defines the inactivity period after which a node is suspected as dead	NO
evs.use_aggregate	Defines whether the node aggregates small packets into one when possible	NO
evs.user_send_window	Defines the maximum number of data packets the node uses at a time in replication	YES
evs.version	Defines the EVS Protocol version	NO
evs.view_forget_timeout	Defines how long the node saves past views from the view history	NO
gcache.debug		NO
gcache.dir	Defines the directory where the writeset cache places its files	NO
gcache.keep_pages_size	Total size of the page storage pages to keep for caching purposes	NO
gcache.mem_size	The maximum size of the `malloc()` store for setups that have spare RAM	NO
gcache.name	Defines the filename for the writeset cache	NO
gcache.page_size	Size of the page files in page storage	NO
gcache.recover	Specifies whether gcache recovery takes place on node startup	NO
gcache.size	Defines the amount of disk space the node should use in caching writesets	NO
gcomm.thread_prio	Defines the policy and priority for the gcomm thread	NO
gcs.fc_debug	Specifies the number of writesets that should occur before posting debug statistics about replication flow	NO
gcs.fc_factor	Resume replication after recv queue drops below this fraction of `gcs.fc_limit`	NO
gcs.fc_limit	Pause replication if recv queue exceeds this number of writesets	YES
gcs.fc_master_slave	Deprecated as of Galera 4.10 in favor of gcs.fc_single_primary	NO
gcs.fc_single_primary	Defines whether there is more than one source of replication	NO
gcs.max_packet_size	Sets the maximum packet size. Writesets that exceed the set size will be fragmented	NO
gcs.max_throttle	Specifies how much to throttle replication rate during state transfer (to avoid running out of memory)	NO
gcs.recv_q_hard_limit	Specifies the maximum allowed size of recv queue	NO
gcs.recv_q_soft_limit	Specifies the fraction of `gcs.recv_q_hard_limit` after which replication rate will be throttled	NO
gcs.sm_dump
gcs.sync_donor	Specifies if the rest of the cluster should keep in sync with the donor	NO
gmcast.group
gmcast.isolate
gmcast.listen_addr	Specifies the address at which Galera Cluster listens to connections from other nodes	NO
gmcast.mcast_addr	Specifies if UDP multicast will be used for replication	NO
gmcast.mcast_port
gmcast.mcast_ttl	Specifies the time to live value for multicast packets	NO
gmcast.mira
gmcast.peer_addr
gmcast.peer_timeout	Sets the connection timeout to initiate message relaying	NO
gmcast.segment	Defines which network segment this node is in	NO
gmcast.time_wait	Specifies the amount of time to wait before allowing peer declared outside of stable view to reconnect	NO
gmcast.version	Used to check which gmcast protocol version is used. For troubleshooting. Should not be implemented in production.	NO
ist.recv_addr	Specifies the address to listen on for Incremental State Transfer (IST)	NO
ist.recv_bind	Defines the address the node binds on for receiving an Incremental State Transfer (IST)	NO
pc.announce_timeout	Cluster joining announcements are sent every 1/2 second for this period of time or less if the other nodes are discovered	NO
pc.bootstrap	If set to `TRUE`, this is a signal to turn a NON-PRIMARY component into PRIMARY	NO
pc.checksum	Checksum replicated messages	NO
pc.ignore_quorum	Specifies if quorum calculations should be ignored	YES
pc.ignore_sb	Specifies if nodes are allowed to process updates in a split-brain situation	YES
pc.linger	Specifies the period for which the PC protocol waits for the EVS termination	NO
pc.npvo	If set to TRUE, in the case of conflicting primaries, the more recent Primary Component overrides older ones	NO
pc.recovery	When set to TRUE, the node stores the Primary Component state to disk in the `gvwstate.dat` file	NO
pc.version	Used for troubleshooting to check which pc protocol version is used	NO
pc.wait_prim	If set to TRUE, the node waits for the `pc.wait_prim_timeout` time period	NO
pc.wait_prim_timeout	Specifies the period of time to wait for a Primary Component	NO
pc.weight	As of version 2.4. sets the node weight for quorum calculation	YES
protonet.backend	Specifies which transport backend to use. Currently only ASIO is supported	NO
protonet.version	Used for troubleshooting purposes to check which transport backend protocol version is used	NO
repl.causal_read_timeout	Specifies maximum time before causal reads timeout	NO
repl.commit_order	Specifies whether to allow Out-Of-Order committing (improves parallel applying performance)	NO
repl.key_format	Sets the hash size to use for key formats (in bytes)	NO
repl.max_ws_size	Sets the maximum size of a writeset in bytes	NO
repl.proto_max	Used only for debugging. Sets the maximum protocol version in replication	NO
signal		NO
socket.checksum	Specifies which checksum algorithm to use on the socket layer	NO
socket.dynamic	Specifies whether to enable connection engine to accept both SSL and TCP connections	NO
socket.non_blocking
socket.recv_buf_size	Sets the size of the receive buffer that is used on the network sockets between nodes	YES
socket.send_buf_size	Sets the size of the send buffer that is used on the network sockets between nodes	YES
socket.ssl	Explicitly enables TLS usage by the wsrep provider	NO
socket.ssl_cert	Defines the path to the SSL certificate	NO
socket.ssl_cipher	Specifies which symmetric cipher to use. By default SSL library implementation default cipher is used	NO
socket.ssl_compression	Specifies whether to enable compression on SSL connections	NO
socket.ssl_key	Defines the path to the SSL certificate key	NO

The following wsrep-provider-options are not present in MariaDB Enterprise Server 10.5.22-16 but are present in one or more older 10.5 ES versions. Click on an item to see its details, including when it was removed.

Option	Description	Dynamic
ist.keep_keys
socket.ssl_ca	Defines the path to the SSL Certificate Authority (CA) file	NO
socket.ssl_password_file	Defines a password file for use in SSL connections	NO
socket.ssl_reload	Reinitialize SSL context	YES