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Node Monitoring Metrics

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

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