615 lines
23 KiB
Plaintext
615 lines
23 KiB
Plaintext
# This is a config file for BeeGFS metadata nodes.
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# http://www.beegfs.com
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# --- [Table of Contents] ---
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#
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# 1) Settings
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# 2) Command Line Arguments
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# 3) Basic Settings Documentation
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# 4) Advanced Settings Documentation
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#
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# --- Section 1.1: [Basic Settings] ---
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#
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sysMgmtdHost =
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storeMetaDirectory =
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storeAllowFirstRunInit = true
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storeFsUUID =
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#
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# --- Section 1.2: [Advanced Settings] ---
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#
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connAuthFile = /etc/beegfs/conn.auth
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connDisableAuthentication = false
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connBacklogTCP = 128
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connFallbackExpirationSecs = 900
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connInterfacesFile =
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connMaxInternodeNum = 32
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connMetaPort = 8005
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connMgmtdPort = 8008
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connPortShift = 0
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connNetFilterFile =
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connUseRDMA = true
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connRDMATypeOfService = 0
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connTcpOnlyFilterFile =
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logType = syslog
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logLevel = 3
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logNoDate = false
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logNumLines = 50000
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logNumRotatedFiles = 5
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logStdFile = /var/log/beegfs-meta.log
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runDaemonized = true
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storeClientXAttrs = false
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storeClientACLs = false
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storeUseExtendedAttribs = true
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sysTargetAttachmentFile =
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sysTargetOfflineTimeoutSecs = 180
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sysAllowUserSetPattern = false
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tuneBindToNumaZone =
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tuneNumStreamListeners = 1
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tuneNumWorkers = 0
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tuneTargetChooser = randomized
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tuneUseAggressiveStreamPoll = false
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tuneUsePerUserMsgQueues = false
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#
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# --- Section 2: [Command Line Arguments] ---
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#
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# Use the command line argument "cfgFile=/etc/anotherconfig.conf" to
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# specify a different config file for beegfs-meta.
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# All other options in this file can also be used as command line
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# arguments, overriding the corresponding config file values.
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#
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# --- Section 3: [Basic Settings Documentation] ---
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#
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# [sysMgmtdHost]
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# Hostname (or IP) of the host running the management service.
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# (See also "connMgmtdPort")
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# Default: <none>
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# [storeMetaDirectory]
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# The absolute path and name of a directory where the file system can store its
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# metadata.
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# Default: <none>
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# [storeFsUUID]
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# Requires the underlying file system of the metadata directory to have the same
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# UUID as set here. This prevents the meta node from accidentaly starting from the
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# wrong device, e.g. when it is not properly mounted. To find the UUID to
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# put here, you can, for example, use blkid:
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#
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# blkid -s UUID
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#
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# This will output all devices on the host with their file systems UUID (if there
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# is one). Choose the correct one and copy it here. This command needs to be run
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# as root.
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#
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# If left empty, the check is skipped. It is highly recommended to enable this check
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# after installation to prevent data corruption.
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# Default: <none>
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# [storeAllowFirstRunInit]
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# Enables or disables daemon startup with an uninitialized storage directory.
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# This can be used to make sure that the daemon does not run when the storage
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# partition is not mounted (e.g. because it needs repair after a power outage).
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# Note: This setting must be enabled during first startup of the daemon, but
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# may be disabled afterwards.
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# Default: true
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#
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# --- Section 4: [Advanced Settings Documentation] ---
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#
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#
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# --- Section 4.1: [Connections & Communication] ---
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#
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# [connAuthFile]
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# The path to a file that contains a shared secret for connection based
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# authentication. Only peers that use the same shared secret will be able to
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# connect.
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# Default: <none>
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# [connDisableAuthentication]
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# If set to true, explicitly disables connection authentication and allow the
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# service to run without a connAuthFile. Running BeeGFS without connection
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# authentication is considered insecure and is not recommended.
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# Default: false
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# [connBacklogTCP]
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# The TCP listen backlog.
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# Default: 128
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# [connFallbackExpirationSecs]
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# The time in seconds after which a connection to a fallback interface expires.
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# When a fallback connection expires, the system will try to establish a new
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# connection to the other hosts primary interface (falling back to another
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# interface again if necessary).
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# Note: The priority of node interfaces can be configured using the
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# "connInterfacesFile" parameter.
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# Default: 900
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# [connInterfacesFile]
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# The path to a text file that specifies the names of the interfaces which
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# may be used for communication by other nodes. One interface per line. The
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# line number also defines the priority of an interface.
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# Example: "ib0" in the first line, "eth0" in the second line.
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# Values: This setting is optional. If unspecified, all available interfaces
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# will be published and priorities will be assigned automatically.
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# Note: This information is sent to other hosts to inform them about possible
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# communication paths. See connRestrictOutboundInterfaces for this
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# configuration's potential effect on outbound connections.
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# Default: <none>
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# [connInterfacesList]
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# Comma-separated list of interface names. Performs the same function as
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# connInterfacesFile.
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# Default: <none>
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# [connRestrictOutboundInterfaces]
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# The default behavior of BeeGFS is to use any available network interface
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# to establish an outbound connection to a node, according to the TCP/IP
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# configuration of the operating system. When connRestrictOutboundInterfaces
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# is set to true, the network interfaces used for outbound connections are
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# limited to the values specified by connInterfacesFile or connInterfacesList.
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# The operating system routing tables are consulted to determine which
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# interface to use for a particular node's IP address. If there is no
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# route from the configured interfaces that is suitable for a node's IP
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# addresses then the connection will fail to be established.
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# Default: false
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# [connNoDefaultRoute]
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# When connRestrictOutboundInterfaces is true, the routing logic would use
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# the default route for a Node's IP address when no specific route for that
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# address is found in the routing tables. This can be problematic during a
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# failure situation, as the default route is not appropriate to use for a
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# subnet that is accessible from an interface that has failed.
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# connNoDefaultRoute is a comma-separated list of CIDRs that should never
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# be accessed via the default route.
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# Default: 0.0.0.0/0. This prevents the default route from ever being used.
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# [connMaxInternodeNum]
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# The maximum number of simultaneous connections to the same node.
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# Default: 32
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# [connMetaPort]
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# The UDP and TCP port of the metadata node.
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# Default: 8005
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# [connMgmtdPort]
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# The UDP and TCP port of the management node.
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# Default: 8008
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# [connPortShift]
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# Shifts all following UDP and TCP ports according to the specified value.
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# Intended to make port configuration easier in case you do not want to
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# configure each port individually.
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# Default: 0
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# [connNetFilterFile]
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# The path to a text file that specifies allowed IP subnets, which may be used
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# for outgoing communication. One subnet per line in classless notation (IP
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# address and number of significant bits).
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# Example: "192.168.10.0/24" in the first line, "192.168.20.0/24" in the second
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# line.
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# Values: This setting is optional. If unspecified, all addresses are allowed
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# for outgoing communication.
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# Default: <none>
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# [connTCPRcvBufSize], [connUDPRcvBufSize]
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# Sets the size for TCP and UDP socket receive buffers (SO_RCVBUF). The maximum
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# allowed value is determined by sysctl net.core.rmem_max. This value is
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# ignored if it is less than the default value determined by
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# net.core.rmem_default.
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# For legacy reasons, the default value 0 indicates that the buffer size is set
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# to connRDMABufNum * connRDMABufSize.
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# -1 indicates that the buffer size should be left at the system default.
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# Default: 0
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# [connUseRDMA]
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# Enables the use of Remote Direct Memory Access (RDMA) for Infiniband.
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# This setting only has effect if libbeegfs-ib is installed.
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# Default: true
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# [connRDMABufNum], [connRDMABufSize]
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# Infiniband RDMA buffer settings.
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# connRDMABufSize is the maximum size of a buffer (in bytes) that will be sent
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# over the network; connRDMABufNum is the number of available buffers that can
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# be in flight for a single connection. These client settings are also applied
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# on the server side for each connection.
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# Note: RAM usage per connection is connRDMABufSize x connRDMABufNum x 2. Keep
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# resulting RAM usage (x connMaxInternodeNum x number_of_clients) on the
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# server in mind when increasing these values.
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# Note: The client needs to allocate physically contiguous pages for
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# connRDMABufSize, so this setting shouldn't be higher than a few kbytes.
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# Default: 8192, 70
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# [connRDMATypeOfService]
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# Infiniband provides the option to set a type of service for an application.
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# This type of service can be used by your subnet manager to provide Quality of
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# Service functionality (e.g. setting different service levels).
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# In openSM the service type will be mapped to the parameter qos-class, which
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# can be handled in your QoS configuration.
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# See
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# www.openfabrics.org/downloads/OFED/ofed-1.4/OFED-1.4-docs/
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# QoS_management_in_OpenSM.txt
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# for more information on how to configure openSM for QoS.
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# This parameter sets the type of service for all outgoing connections of this
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# daemon.
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# Default: 0 (Max: 255)
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# [connTcpOnlyFilterFile]
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# The path to a text file that specifies IP address ranges to which no RDMA
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# connection should be established. This is useful e.g. for environments where
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# all hosts support RDMA, but some hosts cannot connect via RDMA to some other
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# hosts.
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# Example: "192.168.10.0/24" in the first line, "192.168.20.0/24" in the second
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# line.
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# Values: This setting is optional.
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# Default: <none>
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# [connMessagingTimeouts]
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# These constants are used to set some of the connection timeouts for sending
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# and receiving data between services in the cluster. They used to be hard-coded
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# (CONN_LONG_TIMEOUT, CONN_MEDIUM_TIMEOUT and CONN_SHORT_TIMEOUT) but are now
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# made configurable for experimentation purposes.
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# This option takes three integer values of milliseconds, separated by a comma
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# in the order long, medium, short.
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# WARNING: This is an EXPERIMENTAL configuration option that should not be
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# changed in production environments unless properly tested and validated.
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# Some configurations can lead to service lockups and other subtle issues.
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# Please make sure that you know exactly what you are doing and properly
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# test any changes you make.
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# Default: 600000,90000,30000
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# [connRDMATimeouts]
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# These constants are used to set some of the timeouts for sending and receiving
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# data between services in the cluster via RDMA. They used to be
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# hard-coded IBVSOCKET_CONN_TIMEOUT_MS, IBVSOCKET_FLOWCONTROL_ONSEND_TIMEOUT_MS
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# and a 10000 literal for poll timeout but are now made configurable for
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# experimentation purposes.
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# This option takes three integer values of milliseconds, separated by a comma
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# in the order connectMS, flowSendMS and pollMS.
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# WARNING: This is an EXPERIMENTAL configuration option that should not be
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# changed in production environments unless properly tested and validated.
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# Some configurations can lead to service lockups and other subtle issues.
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# Please make sure that you know exactly what you are doing and properly
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# test any changes you make.
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# Default: 3000,180000,7500
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#
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# --- Section 4.2: [Logging] ---
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#
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# [logType]
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# Defines the logger type. This can either be "syslog" to send log messages to
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# the general system logger or "logfile". If set to logfile logs will be written
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# to logStdFile.
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# Default: logfile
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# [logLevel]
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# Defines the amount of output messages. The higher this level, the more
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# detailed the log messages will be.
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# Note: Levels above 3 might decrease performance.
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# Default: 3 (Max: 5)
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# [logNoDate]
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# Defines whether "date & time" (=false) or the current "time only" (=true)
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# should be logged.
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# Default: false
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# [logNumLines]
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# The maximum number of lines per log file.
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# Default: 50000
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# [logNumRotatedFiles]
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# The number of old files to keep when "logNumLines" is reached and the log file
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# is rewritten (log rotation).
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# Default: 5
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# [logStdFile]
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# The path and filename of the log file for standard log messages. The parameter
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# will be considered only if logType value is not equal to syslog. If no name
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# is specified, the messages will be written to the console.
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# Default: /var/log/beegfs-meta.log
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#
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# --- Section 4.3: [Startup] ---
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#
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# [runDaemonized]
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# Detach the process from its parent (and from stdin/-out/-err).
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# Default: true
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#
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# --- Section 4.4: [Storage] ---
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#
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# [storeClientXAttrs]
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# Enables client-side extended attributes.
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# Note: Can only be enabled if the underlying file system supports extended
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# attributes.
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# Note: This setting has to be explicitly enabled on the clients as well.
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# Default: false
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# [storeClientACLs]
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# Enables the handling and storage of client-side access control lists.
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# As ACLs are stored as extended attributes, this setting mainly concerns the
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# enforcement and server-side propagation of directory default ACLs.
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# Note: This setting can only be enabled if storeClientXAttrs is set to true.
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# Note: This setting has to be explicitly enabled on all clients as well.
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# Note: Enabling this setting can affect metadata performance.
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# Default: false
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# [storeUseExtendedAttribs]
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# Controls whether BeeGFS metadata is stored as normal file contents (=false)
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# or as extended attributes (=true) on the underlying files system. Depending on
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# the type and version of your underlying local file system, extended attributes
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# typically are significantly faster.
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# Note: This setting can only be configured at first startup and cannot be
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# changed afterwards.
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# Default: true
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#
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# --- Section 4.5: [System Settings] ---
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#
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# [sysTargetAttachmentFile]
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# This file provides a specification of which targets should be grouped within
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# the same domain for randominternode target chooser. This is useful
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# e.g. if randominternode is used with multiple storage daemon
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# instances running on the same physical hosts when files should be striped
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# across different physical hosts.
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# Format: Line-separated <targetID>=<domainID> definition.
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# Example: "101=1" in first line, "102=1" in second line, "201=2" in third
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# line to define that targets "101" and "102" are part of the same
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# domain "1", while target "201" is part of a different domain "2". The
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# domain IDs in this file are arbitrary values in range 1..65535, the
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# targetIDs are actual targetIDs as in "beegfs-ctl --listtargets".
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# Default: <none>
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# [sysTargetOfflineTimeoutSecs]
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# Timeout until the metadata nodes and storage targets are considered offline
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# when no target state updates can be fetched from that node.
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# Note: This must be the same value as in the /etc/beegfs/beegfs-mgmtd.conf on
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# the management node.
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# Values: time in seconds
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# Default: 180
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# [sysAllowUserSetPattern]
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# If set to true, non-privileged users are allowed to modify stripe pattern
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# settings for directories they own.
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# Default: false
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# [sysFileEventLogTarget]
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# If set, the metadata server will log modification events (which it receives
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# from clients) to a Unix Socket specified here. External tools may listen on
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# this socket and process the information.
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# Note: Each event will be logged in the following format:
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# droppedSeqNo (64bit) - missedSeqNo (64bit) - eventType (32bit) - ModifiedPath
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# Increased dropped sequence numbers indicate communication errors. Increased
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# missed sequence numbers indicate that a event could not be properly reported.
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# The following event types are possible:
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# 0(file contents flushed), 1(truncate), 2(set attribute), 3(file closed),
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# 4(create), 5(mkdir), 6(mknode), 7(create symlink), 8(rmdir), 9(unlink),
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# 10(create hardlink), 11(rename), 12(read)
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# Default: <unset>
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# Example: sysFileEventLogTarget = unix:/run/beegfs/eventlog
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# [sysFileEventPersistDirectory]
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# If set, the metadata server will persist modification events to this
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# directory. If unset, will persist to "eventq" subdirectory under
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# metadata-root.
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# When the metadata server starts up, it will try to create that directory
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# (non-recursive mkdir()) and initialize a new event persist store in this
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# directory.
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# If creating the directory fails with EEXIST (directory exists) it will assume
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# an existing persist store and try to load it.
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# Default: <unset> (storeMetaDirectory + "/eventq")
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# [sysFileEventPersistSize]
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# If event logging is enabled (see sysFileEventLogTarget), this control
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# explicitly sets the size (in bytes) for creating the chunk-store file in the
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# eventq directory (sysFileEventPersistDirectory).
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# The chunk-store is a file containing a ringbuffer where events get
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# persisted. The events will eventually be delivered to downstream services
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# (for example bee-watch, hive-index).
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# Note that this value has no effect when loading an existing queue directory.
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# Default: 0 (use internal defaults / guesswork)
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# Example: sysFileEventPersistSize = 2g # 2 Gigabytes
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# Note: the value will be rounded up to the next power of 2.
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#
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# --- Section 4.6: [Tuning] ---
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#
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# [tuneBindToNumaZone]
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# Defines the zero-based NUMA zone number to which all threads of this process
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# should be bound. If unset, all available CPU cores may be used.
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# Zone binding is especially useful if the corresponding devices (e.g. storage
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# controller and network card) are also attached to the same zone.
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# Note: The Linux kernel shows NUMA zones at /sys/devices/system/node/nodeXY
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# Default: <unset>
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# [tuneNumStreamListeners]
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# The number of threads waiting for incoming data events. Connections with
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# incoming data will be handed over to the worker threads for actual message
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# processing.
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# Default: 1
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# [tuneNumWorkers]
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# The number of worker threads. Higher number of workers allows the server to
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# handle more client requests in parallel. On dedicated metadata servers, this
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# is typically set to a value between four and eight times the number of CPU
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# cores.
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# Note: 0 means use twice the number of CPU cores (but at least 4).
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# Default: 0
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# [tuneTargetChooser]
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# The algorithm to choose storage targets for file creation.
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# Values:
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# * randomized: choose targets in a random fashion.
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# * roundrobin: choose targets in a deterministic round-robin fashion.
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# (Use this only for benchmarking of large-file streaming throughput.)
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# * randomrobin: randomized round-robin; choose targets in a deterministic
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# round-robin fashion, but random shuffle the result targets list.
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# * randominternode: choose random targets that are assigned to different
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# storage nodeIDs. (See sysTargetAttachmentFile if multiple storage
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# storage daemon instances are running on the same physical host.)
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# Note: Only the randomized chooser honors client's preferred nodes/targets
|
|
# settings.
|
|
# Default: randomized
|
|
|
|
# [tuneUseAggressiveStreamPoll]
|
|
# If set to true, the StreamListener component, which waits for incoming
|
|
# requests, will keep actively polling for events instead of sleeping until
|
|
# an event occurs. Active polling will reduce latency for processing of
|
|
# incoming requests at the cost of higher CPU usage.
|
|
# Default: false
|
|
|
|
# [tuneUsePerUserMsgQueues]
|
|
# If set to true, per-user queues will be used to decide which of the pending
|
|
# requests is handled by the next available worker thread. If set to false,
|
|
# a single queue will be used and incoming requests will be processed in
|
|
# first-come, first-served order.
|
|
# Per-user queues are intended to improve fairness in multi-user environments.
|
|
# Default: false
|
|
|
|
# [tuneWorkerBufSize]
|
|
# The buffer size, which is allocated twice by each worker thread for IO and
|
|
# network data buffering.
|
|
# Note: For optimal performance, this value must be at least 128k.
|
|
# Default: 1m
|
|
|
|
# [tuneNumResyncSlaves]
|
|
# The number of threads used to perform the bulk synchronizations for a buddy
|
|
# mirror resync.
|
|
# Default: 12
|
|
|
|
|
|
#
|
|
# --- Section 4.7: [Quota settings] ---
|
|
#
|
|
|
|
# [quotaEnableEnforcement]
|
|
# Enables enforcement of user and group quota limits by periodically checking
|
|
# if the limits are exceeded.
|
|
# Note: This uses quota information provided by the underlying local file
|
|
# systems of the storage targets.
|
|
# Note: Set quota limits with "beegfs-ctl --setquota".
|
|
# Note: If this option is true, performance might be slightly decreased due to
|
|
# extra information tracking.
|
|
# Note: Must be set to the same value in storage servers and mgmtd to be
|
|
# effective.
|
|
# Default: false
|
|
|
|
|
|
#
|
|
# --- Section 5: [Expert options] ---
|
|
#
|
|
|
|
# [storeSelfHealEmptyFiles]
|
|
# Delete metadata entries with no content and handle them as though they had
|
|
# not existed. Metadata entries with no content can be created by backup
|
|
# software that has incorrectly saved or restored metadata.
|
|
# Default: true
|
|
|
|
# [tuneNumCommSlaves]
|
|
# Number of threads dedicated to parallel communication with other nodes.
|
|
# Default: 2 * tuneNumWorkers
|
|
|
|
# [tuneCommSlaveBufSize]
|
|
# Buffer size used by communication threads, analogous to tuneWorkerBufSize.
|
|
# Default: 1m
|
|
|
|
# [tuneDefaultChunkSize], [tuneDefaultNumStripeTargets]
|
|
# Chunk size and number of targets to use when creating the root directory.
|
|
# Files and directories inherit these setting from their parents.
|
|
# Default: 512k, 4
|
|
|
|
# [tuneProcessFDLimit]
|
|
# Sets the maximum number of files the server can open. If the process rlimit
|
|
# is already larger than this number the limit will not be decreased.
|
|
# Default: 50000
|
|
|
|
# [tuneWorkerNumaAffinity]
|
|
# Distributes worker threads equally among NUMA nodes on the system when set.
|
|
# Default: false
|
|
|
|
# [tuneListenerNumaAffinity]
|
|
# Distributes listener threads equally among NUMA nodes on the system when set.
|
|
# Default: false
|
|
|
|
# [tuneListenerPrioShift]
|
|
# Applies a niceness offset to listener threads. Negative values will decrease
|
|
# niceness (increse priority), positive values will increase niceness (decrease
|
|
# priority).
|
|
# Default: -1
|
|
|
|
# [tuneDirMetadataCacheLimit]
|
|
# Number of recently used directory structures to keep in memory.
|
|
# Increasing this value may reduce memory allocations and disk I/O.
|
|
# Default: 1024
|
|
|
|
# [tuneLockGrantWaitMS], [tuneLockGrantNumRetries]
|
|
# Acknowledgement wait parameters for lock grant messages.
|
|
# Locks that are granted asynchronously (ie a client is waiting on the lock)
|
|
# notify waiting clients with UDP packets. For each waiter a notification
|
|
# packet is sent and the server waits for tuneLockGrantWaitMS to receive an
|
|
# acknowledgement from the client. This process is repeated up to
|
|
# tuneLockGrantNumRetries times,
|
|
# Default: 333, 15
|
|
|
|
# [tuneRotateMirrorTargets]
|
|
# Choose mirror targets for RAID10 patterns by rotating the selected targets.
|
|
# Default: false
|
|
|
|
# [tuneEarlyUnlinkResponse]
|
|
# Respond to unlink messages before chunk files have been unlinked.
|
|
# Default: true
|
|
|
|
# [tuneMirrorTimestamps]
|
|
# When buddy mirroring, mirror timestamps as exactly as possible. When this is
|
|
# set to `false` timestamps of mirrored files may be incorrect after a failover
|
|
# has occured. Disabling timestamp mirroring gives a slight performance boost.
|
|
# Default: true
|
|
|
|
# [tuneDisposalGCPeriod]
|
|
# If > 0, disposal files will not be removed instantly. Insead a garbage collector
|
|
# will run on each meta node. This sets the Wait time in seconds between runs.
|
|
# Default: 0
|
|
|
|
# [quotaEarlyChownResponse]
|
|
# Respond to client chown() requests before chunk files have been changed.
|
|
# Quota relies on chunk files having the owner and group information stored in
|
|
# metadata. Therefore, setting this to true creates a short time window after
|
|
# a chown where the application and the servers have a different view on quota.
|
|
# Default: true
|
|
|
|
# [pidFile]
|
|
# Creates a PID file for the daemon when set. Set by init scripts.
|
|
# Default: <none>
|