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Elastic MapReduce
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    Node Monitoring Metrics

    Last updated: 2020-12-01 15:32:46
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      Node-CPU

      Metric Name Unit Description
      idle % Percentage of CPU idle time
      irq % Percentage of interrupts
      nice % Percentage of CPU utilization under nice priority
      steal % Percentage of wait time by virtual CPUs for physical CPUs
      softirq % Percentage of CPU soft interrupts
      guest % Percentage of time spent running virtual processors
      system % CPU utilization in kernel state
      user % CPU utilization in user state
      iowait % Percentage of CPU idleness due to process I/O waits
      1m Load/s 1-minute load
      5m Load/s 5-minute load
      15m Load/s 15-minute load
      cpu_count - Number of CPU cores

      Node-MEMORY

      Metric Name Unit Description
      MemTotal GB Total memory size
      MemFree GB Total free memory size
      MemAvailable GB Total available memory size
      Buffers GB Total memory size used by buffers
      Cached GB Total memory size used by file cache
      SwapCached GB Total swap memory size by anonymous page writes
      SwapFree GB Total available swap size
      AnonPages GB Total unmapped memory size
      SwapTotal GB Total swap size
      Dirty GB Total memory size to write to disk
      Writeback GB Total memory size being written back to disk
      HardwareCorrupted GB Total unavailable memory size due to memory hardware failure
      Shmem GB Total shared memory size
      available_percent % Percentage of available memory size out of total memory
      used_percent % Percentage of used memory size out of total memory

      Node-NETWORK

      Metric Name Unit Description
      ListenDrops Connections/s Number of incoming connections (SYN packets) dropped for any reason
      ListenOverflows Occurrences/s Number of occurrences where the upper limit of the Accept queue is exceeded after the last step of three-way handshake is completed
      SyncookiesFailed Packets/s Number of packets received with invalid SYN Cookie information
      SyncookiesRecv Packets/s Number of packets received with valid SYN Cookie information
      SyncookiesSent Packets/s Number of SYN/ACK packets sent through SYN Cookie
      TCPAbortOnTimeout Connections/s Number of connection closed because the attempts of retransmissions of various timers (RTO/PTO/keepalive) exceed the upper limit
      TCPAbortOnData Sockets/s Number of sockets closed due to unknown data received
      TCPAbortOnClose Sockets/s Number of sockets closed when the user-mode program has data in the buffer
      TCPAbortOnMemory Connections/s Number of connections closed due to memory issues
      TCPAbortOnLinger Connections/s Number of connections suspended in lingering state after being closed
      TCPAbortFailed Attempts/s Number of failed attempts to close connection
      ActiveOpens Connections/s Number of actively established TCP connections
      CurrEstab Connections/s Number of TCP connections currently established
      ActiveOpens Connections/s Number of passively established TCP connections
      AttemptFails Failures/s Number of connection establishment failures
      EstabResets Connections/s Number of reset connections
      InSegs Packets/s Number of received packets, including erroneous ones
      OutSegs Packet/s Number of sent data packets
      RetransSegs Packets/s Number of received TCP packets
      InErrs Packet/s Number of retransmitted packets
      OutRsts Packet/s Number of sent RST packets
      RetransSegsRate % Retransmission rate at TCP layer
      ResetRate % RESET sending frequency
      InErrRate % Percentage of erroneous packets
      TW Sockets/s Number of sockets ending TIME_WAIT state after normal timeout
      TWKilled Sockets/s Number of sockets ending TIME_WAIT state through tcp_tw_recycle mechanism
      TCPTimeWaitOverflow Sockets/s Number of TIME_WAIT sockets unable to be allocated due to limit exceeding
      TWRecycled Sockets/s Number of sockets ending TIME_WAIT state through tcp_tw_reuse mechanism
      TCPTimeouts Timeouts/s Number of first RTO timer timeouts
      TCPSpuriousRTOs Timeouts/s Number of spurious timeouts detected through F-RTO mechanism
      TCPLossProbes Packets/s Number of Tail Loss Probe (TLP) packets sent due to Probe Timeout (PTO)
      TCPLossProbeRecovery Packets/s Number of lost packets just repaired by TLP probes
      TCPRenoRecoveryFail Connections/s Number of connections that enter the Recovery phase and then undergo RTO (SACK option not supported by the opposite)
      TCPSackRecoveryFail Connections/s Number of connections that enter the Recovery phase and then undergo RTO (SACK option supported by the opposite)
      TCPRenoFailures Failures/s Number of failures that enter the TCP_CA_Disorder phase and then undergo RTO (SACK option not supported by the opposite)
      TCPSackFailures Failures/s Number of failures that enter the TCP_CA_Disorder phase and then undergo RTO (SACK option supported by the opposite)
      TCPLossFailures Connections/s Number of connections that enter the TCP_CA_Loss phase and then undergo RTO timeout
      RtoAlgorithm Algorithms/s Number of delayed algorithms for forwarding unanswered objects
      RtoMax Retransmissions/s Maximum number of retransmissions due to TCP delay
      RtoMin Retransmissions/s Minimum number of retransmissions due to TCP delay
      TCPLostRetransmit Retransmissions/s Number of SKB retransmissions due to loss
      TCPFastRetrans Retransmissions/s Number of fast SKB retransmissions
      TCPForwardRetrans Retransmissions/s Number of regular SKB transmissions
      TCPSlowStartRetrans Retransmissions/s Number of SKB retransmissions with successful slow start
      TCPRetransFail Failures/s Number of failed retransmission attempts
      OutDatagrams Datagrams/s Number of sent UDP datagrams
      InDatagrams Datagrams/s Number of received UDP datagrams
      eth0-receive_bytes MB/s Volume of data received by ENI
      eth0-transmit_bytes MB/s Volume of data sent by ENI
      eth0-receive_drop Packets/s Volume of data received and then dropped by ENI
      eth0-receive_errs Packets/s Volume of data failed to be received by ENI
      eth0-transmit_drop Packets/s Volume of data sent and then dropped by ENI
      eth0-transmit_errs Packets/s Volume of data failed to be sent by ENI
      eth0-transmit_packetsl Packet/s Number of packets sent by ENI
      TCP_inuse - Number of TCP sockets in use (listening)
      TCP_orphan - Number of TCP connections waiting to be closed
      TCP_tw - Number of TCP sockets to be destroyed
      TCP_alloc - Number of TCP sockets allocated (established, sk_buff obtained)
      ESTABLISHED - Number of TCP connections in Established state
      SYN-SENT - Number of TCP connections in SYN-SENT state
      SYN-RECV - Number of TCP connections in SYN-RECV state
      FIN-WAIT1 - Number of TCP connections in FIN-WAIT1 state
      FIN-WAIT2 - Number of TCP connections in FIN-WAIT2 state
      TIME-WAIT - Number of TCP connections in TIME-WAIT state
      CLOSE - Number of TCP connections in CLOSE state
      CLOSE-WAIT - Number of TCP connections in CLOSE-WAIT state
      LAST-ACK - Number of TCP connections in LAST-ACK state
      LISTEN - Number of TCP connections in LISTEN state
      CLOSEING - Number of TCP connections in CLOSEING state

      Node-DISK

      Metric Name Unit Description
      Read MB/s Data read per second
      Write MB/s Data written per second
      vd- - Number of I/O operations in progress on current device
      Read ms Average wait time per device I/O read operation
      Write ms Average wait time per device I/O write operation
      IO ms Average processing time per I/O request
      Read Queries/s Read QPS
      Write Queries/s Write QPS
      Merge-Read Queries/s Merged read QPS
      Merge-Write Queries/s Merged write QPS
      vd- % Disk busyness
      Free GB Free disk space
      Used GB Used disk space
      Total GB Total disk space
      Used % Disk utilization
      Free - Number of remaining disk inodes
      Total - Total number of disk inodes
      Used % Disk inode utilization

      Node-FILE HANDLE

      Metric Name Unit Description
      allocated - Number of allocated file handles
      maximum - Maximum number of file handles

      Node-PROCESS

      Metric Name Unit Description
      intr_total Interrupts/s Number of system interrupts
      context_switches_total Switches/s Number of system context switches
      forks_total Processes/s Number of new system processes
      procs_running Processes/s Number of running system processes
      procs_blocked Processes/s Number of blocked system processes
      procs_total Processes/s Total number of system processes
      AgentVersionl version Agent version

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