Monitoring Metrics

This section describes the metrics provided by KakaoCloud's Monitoring service.

Virtual Machine, GPU, Bare Metal Server Metrics

These are the primary system resource metrics commonly collected from Virtual Machine, GPU, and Bare Metal Server instances, and they can be utilized in the following service areas:

• Monitoring: Custom Dashboard, Metric Explorer, Metric Export
• Alert Center: Metric-based Alert Policy Configuration

CPU & Memory

Metric Name	Description	Unit
cpu_usage	Total CPU utilization	%
cpu_usage_user	CPU utilization (user process)	%
cpu_usage_system	CPU utilization (system kernel)	%
cpu_usage_iowait	CPU utilization (I/O wait)	%
cpu_usage_per_core	CPU utilization per core	%
mem_usage	Total memory utilization	%
mem_used	Amount of memory in use	bytes(IEC)
mem_buffered	Memory usage (buffer)	bytes(IEC)
mem_cached	Memory usage (cache)	bytes(IEC)

Disk I/O & Capacity

Metric Name	Description	Unit
disk_used_percent	Disk utilization	%
disk_used	Disk usage	bytes(IEC)
disk_read_bytes_persec	Disk read bytes size per second	bytes/s(IEC)
disk_write_bytes_persec	Disk write bytes size per second	bytes/s(IEC)
disk_read_iops	Disk read operations completed per second (IOPS)	count/s
disk_write_iops	Disk write operations completed per second (IOPS)	count/s
disk_inodes_usage	Disk inode utilization	%
disk_free	Available disk capacity	bytes(IEC)
disk_total	Total disk capacity	bytes(IEC)
disk_inodes_free	Number of available inodes	count
disk_inodes_total	Total number of reserved inodes	count
disk_inodes_used	Inode usage	count

Network

Metric Name	Description	Unit
network_rx_bytes_persec	Bytes received per second on the network interface	bytes/s(IEC)
network_tx_bytes_persec	Bytes sent per second on the network interface	bytes/s(IEC)
network_rx_packets_persec	Packets received per second on the network interface	packets/s
network_tx_packets_persec	Packets sent per second on the network interface	packets/s

GPU Exclusive Metrics

Metric Name	Description	Unit
nvidia_smi_utilization_gpu	GPU core utilization	%
nvidia_smi_memory_used	Memory in use per GPU core	MiB(IEC)
nvidia_smi_memory_free	Available memory per GPU core	MiB(IEC)
nvidia_smi_memory_total	Total memory per GPU core	MiB(IEC)
nvidia_smi_power_draw	Power consumption per GPU core	watt

info

• mem_buffered, mem_cached, and disk_inodes_usage metrics are only collected and provided on Linux OS.
• nvidia_smi metrics are only collected from servers equipped with a GPU.

caution

• GPU Instance Library Compatibility: If you update the NVIDIA library on a GPU instance, you must check compatibility with the CUDA version. If they are incompatible, the monitoring agent may fail to collect NVIDIA metrics.
• Network Alert Policy: When configuring an Alert Center policy using the network_rx_bytes_persec metric, the policy will apply to all network interfaces. For multi-NIC instances, an alert is triggered if any connected interface exceeds the configured threshold.

Libvirt Metrics

These are the main resource metrics for virtualization-based servers collected in the Libvirt environment, and they can be utilized in the following service areas:

• Monitoring: Metric Export
• Alert Center: Metric-based Alert Policy Configuration

CPU & Memory

Metric Name	Description	Unit
libvirt_domain_info_cpu_time_seconds_total	Total CPU time used	count
libvirt_domain_info_virtual_cpus	Number of CPU cores	count

Disk I/O & Capacity

Metric Name	Description	Unit
libvirt_domain_block_stats_read_bytes_total	Bytes read from disk	bytes(IEC)
libvirt_domain_block_stats_write_bytes_total	Bytes written to disk	bytes(IEC)

Network

Metric Name	Description	Unit
libvirt_domain_interface_stats_receive_bytes_total	Bytes received on the network interface	bytes(IEC)
libvirt_domain_interface_stats_transmit_bytes_total	Bytes sent on the network interface	bytes(IEC)
libvirt_domain_interface_stats_receive_packets_total	Packets received on the network interface	packets
libvirt_domain_interface_stats_transmit_packets_total	Packets sent on the network interface	packets
libvirt_domain_interface_stats_receive_drops_total	Number of packets not received on the network interface	packets

Burstable Instance Exclusive Metrics

The following metrics are only collected from t1i family instances with the Burstable option applied (excluding t1i.medium.dns.default type).

Metric Name	Description	Unit
cpu_credit_usage	Accumulated CPU credit usage; the amount of credit consumed when CPU usage exceeds baseline performance	count
cpu_credit_balance	Remaining CPU credit balance for the instance, accrued when operating below baseline performance	count

Kubernetes Engine Metrics

These are the primary cluster, node, and pod resource metrics collected in the Kubernetes Engine environment, and they can be utilized in the following service areas:

• Monitoring: Metric Export

Cluster

Metric Name	Description	Unit
cluster_autoscaler_node_group_min_count	Minimum number of nodes during node group autoscaling	count
cluster_autoscaler_node_group_max_count	Maximum number of nodes during node group autoscaling	count
cluster_autoscaler_node_group_target_count	Target number of nodes during node group autoscaling	count
node_count	Current number of nodes	count

Node

Metric Name	Description	Unit
kube_node_status_allocatable	Amount of resources allocatable to pods on the node	none
kube_node_status_capacity	Total resource capacity of the node	none
node_cpu_seconds_total	Time used by node CPU in each mode	count
node_filesystem_avail_bytes	Available filesystem capacity in the non-root user area of the node	bytes(IEC)
node_filesystem_size_bytes	Total size of the node filesystem	bytes(IEC)
node_memory_Active_bytes	Memory currently in use but reusable (Active)	bytes(IEC)
node_memory_Buffers_bytes	Memory used by the kernel for disk I/O buffers	bytes(IEC)
node_memory_Cached_bytes	Memory used for filesystem cache	bytes(IEC)
node_memory_MemAvailable_bytes	Memory immediately available for new processes	bytes(IEC)
node_memory_MemFree_bytes	Memory currently unallocated	bytes(IEC)
node_memory_MemTotal_bytes	Total memory capacity of the node	bytes(IEC)
node_memory_SReclaimable_bytes	Reclaimable memory within the Slab cache	bytes(IEC)
node_network_receive_bytes_total	Total bytes received by the network device	bytes(IEC)
node_network_transmit_bytes_total	Total bytes sent by the network device	bytes(IEC)

Pod & Container

Metric Name	Description	Unit
kube_pod_container_info	Basic information about the container within the pod	none
kube_pod_container_resource_limits	Upper limit (Limit) of resources requested by the container	none
kube_pod_container_resource_requests	Requested resource value (Request) of the container	none
kube_pod_container_status_running	Whether the container status is Running	count
kube_pod_container_status_terminated	Whether the container status is Terminated	count
kube_pod_info	Information about the pod	none
container_cpu_usage_seconds_total	Total CPU time consumed by the container	count
container_memory_working_set_bytes	Memory used by the container that cannot be reclaimed by the OS	bytes(IEC)
container_network_receive_bytes_total	Total network bytes received by the container	bytes(IEC)
container_network_transmit_bytes_total	Total network bytes sent by the container	bytes(IEC)

Load Balancing Metrics

These are the main metrics for monitoring the traffic and connection status of Load Balancer resources, and they can be utilized in the following service areas:

• Monitoring: Custom Dashboard, Metric Explorer, Metric Export
• Alert Center: Metric-based Alert Policy Configuration

Metric Name	Description	Unit
lb_bytes_in_persec	Inbound traffic per second (received bytes)	bytes/s(IEC)
lb_bytes_out_persec	Outbound traffic per second (sent bytes)	bytes/s(IEC)
lb_connections_persec	Number of connections created per second	count/s
lb_current_connections	Number of currently maintained connections	count
lb_healthy_host_count	Number of healthy (connectable) targets	count
lb_unhealthy_host_count	Number of unhealthy (unconnectable) targets	count

MySQL Metrics

These are the main metrics for monitoring the storage, network, query, and connection status of MySQL instances, and they can be utilized in the following service areas:

• Monitoring: Custom Dashboard, Metric Explorer, Metric Export
• Alert Center: Metric-based Alert Policy Configuration

Memory

Metric Name	Description	Unit
mem_swap_total	Total swap memory	bytes(IEC)
mem_swap_cached	Cached swap memory	bytes(IEC)
mem_swap_free	Available swap memory	bytes(IEC)

Disk I/O & Capacity

Metric Name	Description	Unit
mysql_logstorage_disk_write_bytes_persec	Bytes written per second on the log storage disk	bytes/s(IEC)
mysql_defaultstorage_disk_write_bytes_persec	Bytes written per second on the default storage disk	bytes/s(IEC)
mysql_logstorage_disk_read_bytes_persec	Bytes read per second on the log storage disk	bytes/s(IEC)
mysql_defaultstorage_disk_read_bytes_persec	Bytes read per second on the default storage disk	bytes/s(IEC)
mysql_logstorage_disk_write_iops	Write operations completed per second on the log storage disk	count/s
mysql_defaultstorage_disk_write_iops	Write operations completed per second on the default storage disk	count/s
mysql_logstorage_disk_read_iops	Read operations completed per second on the log storage disk	count/s
mysql_defaultstorage_disk_read_iops	Read operations completed per second on the default storage disk	count/s
mysql_logstorage_disk_used	Log storage disk usage	bytes(IEC)
mysql_defaultstorage_disk_used	Default storage disk usage	bytes(IEC)
mysql_logstorage_disk_used_percent	Log storage disk utilization	%
mysql_defaultstorage_disk_used_percent	Default storage disk utilization	%
mysql_logstorage_disk_inodes_usage	Log storage inode utilization	%
mysql_defaultstorage_disk_inodes_usage	Default storage inode utilization	%
mysql_defaultstorage_disk_free	Available capacity on the default storage disk	bytes(IEC)
mysql_defaultstorage_disk_total	Total capacity of the default storage disk	bytes(IEC)
mysql_logstorage_disk_free	Available capacity on the log storage disk	bytes(IEC)
mysql_logstorage_disk_total	Total capacity of the log storage disk	bytes(IEC)
mysql_defaultstorage_disk_inodes_free	Number of available inodes on the default storage disk	count
mysql_defaultstorage_disk_inodes_total	Total number of inodes on the default storage disk	count
mysql_defaultstorage_disk_inodes_used	Inode usage on the default storage disk	count
mysql_logstorage_disk_inodes_free	Number of available inodes on the log storage disk	count
mysql_logstorage_disk_inodes_total	Total number of inodes on the log storage disk	count
mysql_logstorage_disk_inodes_used	Inode usage on the log storage disk	count

Network

Metric Name	Description	Unit
mysql_network_rx_bytes_persec	Bytes received per second on the network interface	bytes/s(IEC)
mysql_network_tx_bytes_persec	Bytes sent per second on the network interface	bytes/s(IEC)
mysql_network_rx_packets_persec	Packets received per second on the network interface	packets/s
mysql_network_tx_packets_persec	Packets sent per second on the network interface	packets/s

Query & Transaction

Metric Name	Description	Unit
mysql_query_persec	Queries per second (QPS)	count/s
mysql_com_insert_count	Number of INSERT queries performed over 5 minutes	count
mysql_com_select_count	Number of SELECT queries performed over 5 minutes	count
mysql_com_update_count	Number of UPDATE queries performed over 5 minutes	count
mysql_com_delete_count	Number of DELETE queries performed over 5 minutes	count
mysql_com_commit_count	Number of COMMIT queries performed over 5 minutes	count
mysql_slow_query_count	Number of slow queries performed over 5 minutes	count

Connection & Session Status

Metric Name	Description	Unit
mysql_connections_count	Number of currently connected connections	count
mysql_max_connections_count	Maximum number of connectable connections	count
mysql_connection_usage_percent	Current connection ratio relative to maximum connections	%
mysql_instance_status	Instance status	count
mysql_instance_group_status	Instance group status	count
mysql_uptime	Instance uptime	duration

InnoDB & Binary Log

Metric Name	Description	Unit
mysql_innodb_buffer_pool_read_requests	Total Buffer Pool read requests	count
mysql_innodb_buffer_pool_reads	Read requests directly from the Buffer Pool	count
mysql_innodb_buffer_cache_hit_ratio	Buffer Pool cache hit ratio	%
mysql_innodb_row_lock_current_waits	Number of current row locks	count
mysql_innodb_row_lock_time	Time spent on row locks	milliseconds
mysql_binary_size_bytes	Binary Log size	bytes(IEC)
mysql_binary_files_count	Number of Binary Log files	count
mysql_variables_max_binlog_size	Maximum Binary Log size setting	bytes(IEC)
mysql_replication_lag	Binlog replication delay time	seconds

PostgreSQL Metrics

These are the main metrics for monitoring the disk, network, connection, and transaction status of PostgreSQL instances, and they can be utilized in the following service areas:

• Monitoring: Custom Dashboard, Metric Explorer, Metric Export
• Alert Center: Metric-based Alert Policy Configuration

Disk I/O & Capacity

Metric Name	Description	Unit
pg_defaultstorage_disk_read_bytes_persec	Bytes read per second on the default storage disk	bytes/s(IEC)
pg_defaultstorage_disk_write_bytes_persec	Bytes written per second on the default storage disk	bytes/s(IEC)
pg_defaultstorage_disk_read_iops	Read operations completed per second on the default storage disk	count/s
pg_defaultstorage_disk_write_iops	Write operations completed per second on the default storage disk	count/s
pg_defaultstorage_disk_used	Default storage disk usage	bytes(IEC)
pg_defaultstorage_disk_used_percent	Default storage disk utilization	%
pg_defaultstorage_disk_inodes_usage	Default storage inode utilization	%
pg_defaultstorage_disk_free	Available capacity on the default storage disk	bytes(IEC)
pg_defaultstorage_disk_total	Total capacity of the default storage disk	bytes(IEC)
pg_defaultstorage_disk_inodes_free	Number of available inodes on the default storage disk	count
pg_defaultstorage_disk_inodes_total	Total number of inodes on the default storage disk	count
pg_defaultstorage_disk_inodes_used	Inode usage on the default storage disk	count
pg_logstorage_disk_read_bytes_persec	Bytes read per second on the log storage disk	bytes/s(IEC)
pg_logstorage_disk_write_bytes_persec	Bytes written per second on the log storage disk	bytes/s(IEC)
pg_logstorage_disk_read_iops	Read operations completed per second on the log storage disk	count/s
pg_logstorage_disk_write_iops	Write operations completed per second on the log storage disk	count/s
pg_logstorage_disk_used	Log storage disk usage	bytes(IEC)
pg_logstorage_disk_used_percent	Log storage disk utilization	%
pg_logstorage_disk_inodes_usage	Log storage inode utilization	%
pg_logstorage_disk_free	Available capacity on the log storage disk	bytes(IEC)
pg_logstorage_disk_total	Total capacity of the log storage disk	bytes(IEC)
pg_logstorage_disk_inodes_free	Number of available inodes on the log storage disk	count
pg_logstorage_disk_inodes_total	Total number of inodes on the log storage disk	count
pg_logstorage_disk_inodes_used	Inode usage on the log storage disk	count

Network

Metric Name	Description	Unit
pg_network_rx_bytes_persec	Bytes received per second on the network interface	bytes/s(IEC)
pg_network_tx_bytes_persec	Bytes sent per second on the network interface	bytes/s(IEC)
pg_network_rx_packets_persec	Packets received per second on the network interface	packets/s
pg_network_tx_packets_persec	Packets sent per second on the network interface	packets/s

Connection & Session Status

Metric Name	Description	Unit
pg_total_connections	Total number of connections	count
pg_active_connections	Number of active connections	count
pg_active_transactions	Number of active transactions	count
pg_lock_sessions	Number of sessions experiencing locks	count
pg_total_deadlocks	Number of deadlocks occurred	count

Replication & Transaction Status

Metric Name	Description	Unit
pg_replication_lag	Replication delay time	seconds
pg_temp_file_ratio	Temporary file ratio relative to total transactions	%
pg_temp_file_ratio_per_group	Temporary file ratio per instance group	%
pg_xid_age	XID Age of a specific process	count
pg_xid_age_per_group	Vacuum XID Age per instance group	count

Performance & Cache

Metric Name	Description	Unit
pg_buffer_hit_ratio	Buffer hit ratio	%

MemStore Metrics

These are the main metrics for monitoring the memory, network, replication, and CPU usage status of MemStore instances, and they can be utilized in the following service areas:

• Monitoring: Custom Dashboard, Metric Explorer, Metric Export
• Alert Center: Metric-based Alert Policy Configuration

CPU & Memory

Metric Name	Description	Unit
memstore_used_cpu_sys	Total system CPU usage	count
memstore_used_cpu_sys_main_thread	System CPU usage of the main thread	count
memstore_used_cpu_user	Total user CPU usage	count
memstore_used_cpu_user_main_thread	User CPU usage of the main thread	count
memstore_memory_usage	Total memory utilization	%
memstore_used_memory	Size of memory used by MemStore	bytes(IEC)
memstore_used_memory_peak	Peak memory usage	bytes(IEC)
memstore_used_memory_peak_perc	Peak usage ratio relative to total memory	%
memstore_used_memory_dataset	Memory used for actual data storage	bytes(IEC)
memstore_used_memory_dataset_perc	Memory ratio used for actual data storage	%
memstore_used_memory_overhead	Overhead memory required for internal data structure management	bytes(IEC)
memstore_used_memory_lua	Memory used for Lua script execution	bytes(IEC)
memstore_allocator_allocated	Memory allocated to the allocator (including internal fragmentation)	bytes(IEC)
memstore_allocator_active	Active memory in the allocator (including external fragmentation)	bytes(IEC)
memstore_allocator_resident	Resident memory managed by the allocator	bytes(IEC)
memstore_allocator_rss_bytes	RSS memory size	bytes(IEC)
memstore_allocator_frag_bytes	Difference between active memory and allocated memory	bytes(IEC)
memstore_allocator_frag_ratio	Ratio of allocated memory to active memory	%
memstore_allocator_rss_ratio	Ratio of active memory to resident memory	%
memstore_mem_fragmentation_bytes	Difference between used resident memory and allocated memory	bytes(IEC)
memstore_mem_fragmentation_ratio	Ratio of used resident memory to allocated memory	%
memstore_rss_overhead_bytes	Difference between process RSS and allocator resident memory	bytes(IEC)
memstore_rss_overhead_ratio	Ratio between process RSS and allocator resident memory	%
memstore_total_system_memory	Total memory of the system where MemStore is running	bytes(IEC)

Disk I/O & Capacity

Metric Name	Description	Unit
disk_free	Available disk capacity	bytes(IEC)
disk_total	Total disk capacity	bytes(IEC)
disk_inodes_free	Number of available inodes	count
disk_inodes_used	Number of inodes in use	count
disk_inodes_total	Total number of reserved inodes	count

Network

Metric Name	Description	Unit
memstore_instantaneous_input_kbps	Network input rate per second	KiB/s(IEC)
memstore_instantaneous_output_kbps	Network output rate per second	KiB/s(IEC)
memstore_total_net_input_bytes	Total network input bytes	bytes(IEC)
memstore_total_net_output_bytes	Total network output bytes	bytes(IEC)
memstore_instantaneous_ops_per_sec	Number of commands processed per second	count
memstore_cmdstat_calls_persec	Command calls per second	count/s
memstore_total_commands_processed	Total number of commands processed	count
memstore_total_reads_processed	Total number of read events processed	count
memstore_total_writes_processed	Total number of write events processed	count
memstore_io_threaded_reads_processed	Number of read events processed by I/O threads	count
memstore_io_threaded_writes_processed	Number of write events processed by I/O threads	count

Connection & Replication Status

Metric Name	Description	Unit
memstore_connected_slaves	Number of connected Replicas	count
memstore_replication_lag	Replica replication delay time	seconds
memstore_clients	Number of currently connected clients	count
memstore_maxclients	Maximum connectable clients	count
memstore_client_ratio	Current connection ratio relative to maximum clients	%
memstore_blocked_clients	Number of blocked clients (e.g., BLPOP commands)	count
memstore_cluster_connections	Number of sockets used on the cluster bus	count
memstore_cluster_enabled	Cluster enabled status	count
memstore_pubsub_channels	Number of Pub/Sub channels	count
memstore_pubsub_patterns	Number of Pub/Sub patterns	count
memstore_uptime	Instance uptime	seconds

Keys & Cache Statistics

Metric Name	Description	Unit
memstore_keyspace_hits	Number of key hits	count
memstore_keyspace_misses	Number of key misses	count
memstore_keyspace_hitrate_percent	Key hit rate	%
memstore_evicted_keys	Number of keys removed due to memory limits	count
memstore_expired_keys	Number of expired keys	count
memstore_lazyfree_pending_objects	Number of objects pending release by Lazy Free	count
memstore_lazyfreed_objects	Number of objects released by Lazy Free	count
memstore_lru_clock	Internal time value for the LRU algorithm	count

Burstable Instance Exclusive Metrics

The following metrics are only collected from t1i family instances with the Burstable option applied.

Metric Name	Description	Unit
cpu_credit_usage	CPU credit usage	count
cpu_credit_balance	CPU credit balance	count

Hadoop Eco Metrics

These are the main HBase, HDFS, Yarn, and Kafka related system metrics collected in the Hadoop Eco environment, and they can be utilized in the following service areas:

• Monitoring: Metric Export

HBase

Metric Name	Description	Unit
HBase_Master_JvmMetrics_MemHeapMaxM	Maximum JVM heap memory size of HBase Master	MB
HBase_Master_JvmMetrics_MemHeapUsedM	JVM heap memory usage of HBase Master	MB
HBase_Master_Server_numDeadRegionServers	Number of dead (unhealthy) Region Servers	count
HBase_Master_Server_numRegionServers	Number of running (healthy) Region Servers	count

HDFS (NameNode)

Metric Name	Description	Unit
Hadoop_NameNode_JvmMetrics_MemHeapMaxM	Maximum JVM heap memory size of NameNode	MB
Hadoop_NameNode_JvmMetrics_MemHeapUsedM	JVM heap memory usage of NameNode	MB
Hadoop_NameNode_JvmMetrics_GcTimeMillis	GC execution time of NameNode JVM	count
Hadoop_NameNode_FSNamesystem_CapacityTotal	Total HDFS storage capacity	bytes(IEC)
Hadoop_NameNode_FSNamesystem_CapacityUsed	Used HDFS storage capacity	bytes(IEC)
Hadoop_NameNode_FSNamesystem_CapacityRemaining	Remaining HDFS storage capacity	bytes(IEC)
Hadoop_NameNode_FSNamesystem_CapacityUsedNonDFS	Capacity used for non-DFS purposes (logs, temporary files, etc.)	bytes(IEC)
Hadoop_NameNode_FSNamesystem_NumLiveDataNodes	Number of healthy (live) DataNodes	count
Hadoop_NameNode_FSNamesystem_NumDeadDataNodes	Number of dead (unhealthy) DataNodes	count
Hadoop_NameNode_FSNamesystem_StaleDataNodes	Number of DataNodes with halted status updates	count
Hadoop_NameNode_FSNamesystem_CorruptBlocks	Number of corrupted blocks	count
Hadoop_NameNode_FSNamesystem_TotalLoad	Number of currently active client connections	count

Yarn (ResourceManager)

Metric Name	Description	Unit
Yarn_ResourceManager_JvmMetrics_MemHeapMaxM	Maximum JVM heap memory size of ResourceManager	MB
Yarn_ResourceManager_JvmMetrics_MemHeapUsedM	JVM heap memory usage of ResourceManager	MB
Yarn_ResourceManager_JvmMetrics_GcTimeMillis	GC execution time of ResourceManager JVM	count
Yarn_ResourceManager_ClusterMetrics_NumActiveNMs	Number of healthy (active) NodeManagers	count
Yarn_ResourceManager_ClusterMetrics_NumShutdownNMs	Number of shut down NodeManagers	count
Yarn_ResourceManager_QueueMetrics_AllocatedMB	Allocated memory size	MB
Yarn_ResourceManager_QueueMetrics_AvailableMB	Available memory size	MB
Yarn_ResourceManager_QueueMetrics_PendingMB	Pending memory size	MB
Yarn_ResourceManager_QueueMetrics_ReservedMB	Reserved memory size	MB
Yarn_ResourceManager_QueueMetrics_AllocatedVCores	Number of allocated vCores	count
Yarn_ResourceManager_QueueMetrics_AvailableVCores	Number of available vCores	count
Yarn_ResourceManager_QueueMetrics_PendingVCores	Number of pending vCores	count
Yarn_ResourceManager_QueueMetrics_ReservedVCores	Number of reserved vCores	count
Yarn_ResourceManager_QueueMetrics_AppsRunning	Number of running applications	count
Yarn_ResourceManager_QueueMetrics_AppsCompleted	Number of completed applications	count
Yarn_ResourceManager_QueueMetrics_AppsFailed	Number of failed applications	count
Yarn_ResourceManager_QueueMetrics_AppsKilled	Number of killed applications	count
Yarn_ResourceManager_QueueMetrics_AppsPending	Number of pending applications	count
Yarn_ResourceManager_QueueMetrics_AppsSubmitted	Number of submitted applications	count

Kafka

Metric Name	Description	Unit
Kafka_Active_Brokers	Number of healthy (active) Brokers	count
Kafka_Total_Topics	Total number of Topics in operation	count

Pub/Sub Metrics

These are the main metrics for monitoring the message publishing, subscription, and storage status of the Pub/Sub service, and they can be utilized in the following service areas:

• Monitoring: Custom Dashboard, Metric Explorer
• Alert Center: Metric-based Alert Policy Configuration

Publish

Metric Name	Description	Unit
pubsub_published_message_count_persec	Number of published messages per second	count/s
pubsub_published_message_bytes_persec	Size of published messages per second	bytes/s(IEC)
pubsub_publish_request_count_persec	Number of publish requests per second	count/s
pubsub_topic_storage_used_bytes	Topic retention data size	bytes(IEC)

Subscription

Metric Name	Description	Unit
pubsub_ack_request_count_persec	Number of acknowledgment (ACK) requests per second	count/s
pubsub_acked_message_count_persec	Number of acknowledged messages per second	count/s
pubsub_unprocessed_messages	Number of unprocessed messages	count
pubsub_pulled_message_count_persec	Number of pulled messages per second	count/s
pubsub_streaming_pull_response_count_persec	Number of streaming pull responses per second	count/s
pubsub_push_count_persec	Number of push requests per second	count/s
pubsub_pushed_message_count_persec	Number of pushed messages per second	count/s
pubsub_subscription_storage_used_bytes	Subscription retention data size	bytes(IEC)
pubsub_seek_request_count_permin	Number of Seek requests per minute	count/m

Storage & Export

Metric Name	Description	Unit
pubsub_exported_message_count_persec	Number of messages exported to Object Storage per second	count/s
pubsub_object_storage_api_call_count_permin	Number of Object Storage API calls per minute	count/m

Direct Connect Metrics

These are the main metrics for monitoring the traffic and connection status of Direct Connect virtual interfaces, and they can be utilized in the following service areas:

• Monitoring: Metric Export

Network Traffic

Metric Name	Description	Unit
dx_virtual_interface_input_bits_persec	Bits received per second on the virtual interface	bits/s(IEC)
dx_virtual_interface_output_bits_persec	Bits sent per second on the virtual interface	bits/s(IEC)
dx_virtual_interface_input_packets_persec	Packets received per second on the virtual interface	packets/s
dx_virtual_interface_output_packets_persec	Packets sent per second on the virtual interface	packets/s

Connection Status

Metric Name	Description	Unit
dx_virtual_intrerface_state	Connection status of the Direct Connect virtual interface	count

Gateway Load Balancer Metrics

These are the main metrics for monitoring the traffic, connection, and health status of Gateway Load Balancer and Endpoint Service, and they can be utilized in the following service areas:

• Monitoring: Metric Export

Network Traffic

Metric Name	Description	Unit
gwlb_bytes_in_persec	Total bytes received by the Gateway Load Balancer	bytes/s(IEC)
gwlb_bytes_out_persec	Total bytes sent by the Gateway Load Balancer	bytes/s(IEC)
eps_bytes_in_persec	Total bytes received by the Endpoint Service	bytes/s(IEC)
eps_bytes_out_persec	Total bytes sent by the Endpoint Service	bytes/s(IEC)
ep_bytes_in_persec	Total bytes received by the Endpoint	bytes/s(IEC)
ep_bytes_out_persec	Total bytes sent by the Endpoint	bytes/s(IEC)

Connection Status

Metric Name	Description	Unit
gwlb_current_connections	Number of active connections on the Gateway Load Balancer	count
gwlb_healthy_host_count	Number of healthy hosts on the Gateway Load Balancer	count
gwlb_unhealthy_host_count	Number of unhealthy hosts on the Gateway Load Balancer	count
eps_current_connections	Number of active connections on the Endpoint Service	count
eps_endpoint_count	Number of endpoints connected to the Endpoint Service	count
ep_current_connections	Number of active connections on the Endpoint	count

Private Endpoint Metrics

These are the main metrics for monitoring the traffic and connection status of Private Endpoint, and they can be utilized in the following service areas:

• Monitoring: Metric Export

Network Traffic

Metric Name	Description	Unit
ep_bytes_in_persec	Total bytes received by the Endpoint	bytes/s(IEC)
ep_bytes_out_persec	Total bytes sent by the Endpoint	bytes/s(IEC)

Connection Status

Metric Name	Description	Unit
ep_current_connections	Number of active connections on the Endpoint	count