wehub-resource-sync
235 lines
28 KiB
Markdown
235 lines
28 KiB
Markdown
---
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id: redis
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title: Monitorin REDIS database
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sidebar_label: REDIS
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keywords: [ open source monitoring tool, open source Redis monitoring tool, monitoring Redis metrics ]
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---
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> Collect and monitor the general performance Metrics of Redis database. Support REDIS1.0+.
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## Configuration parameter
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| Parameter name | Parameter help description |
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|--------|------------------------------------------------------|
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| Target Host | The IP, IPV6, or domain name of the monitored endpoint. Note ⚠️: Do not include protocol headers (eg: https://, http://). |
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| Port | The HTTP port provided by Redis, default value is 6379, sentinel node`s default value is 26379 |
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| Timeout | Set the timeout time when SQL query does not respond to data, unit: ms, default: 3000ms |
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| Username | Database connection user name, optional |
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| Password | Database connection password, optional |
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### Collection Metric
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#### Metric set：server
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| Metric name | Metric unit | Metric help description |
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|--------------------------|------|-----------------------------------------------|
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| redis_version | none | Version of the Redis server |
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| redis_git_sha1 | none | Git SHA1 |
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| redis_git_dirty | none | Git dirty flag |
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| redis_build_id | none | The build id |
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| redis_mode | none | The server's mode ("standalone", "sentinel" or "cluster") |
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| os | none | Operating system hosting the Redis server |
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| arch_bits | none | Architecture (32 or 64 bits) |
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| multiplexing_api | none | Event loop mechanism used by Redis |
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| atomicvar_api | none | Atomicvar API used by Redis |
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| gcc_version | none | Version of the GCC compiler used to compile the Redis server |
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| process_id | none | PID of the server process |
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| process_supervised | none | Supervised system ("upstart", "systemd", "unknown" or "no") |
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| run_id | none | Random value identifying the Redis server (to be used by Sentinel and Cluster) |
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| tcp_port | none | TCP/IP listen port |
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| server_time_usec | none | Epoch-based system time with microsecond precision |
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| uptime_in_seconds | none | Number of seconds since Redis server start |
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| uptime_in_days | none | Same value expressed in days |
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| hz | none | The server's current frequency setting |
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| configured_hz | none | The server's configured frequency setting |
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| lru_clock | none | Clock incrementing every minute, for LRU management |
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| executable | none | The path to the server's executable |
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| config_file | none | The path to the config file |
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| io_threads_active | none | Flag indicating if I/O threads are active |
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| shutdown_in_milliseconds | none | The maximum time remaining for replicas to catch up the replication before completing the shutdown sequence. This field is only present during shutdown. |
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#### Metric set：clients
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| Metric name | Metric unit | Metric help description |
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|---------------------------------|------|--------------------------------------------------------------------------------|
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| connected_clients | none | Number of client connections (excluding connections from replicas) |
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| cluster_connections | none | An approximation of the number of sockets used by the cluster's bus |
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| maxclients | none | The value of the maxclients configuration directive. This is the upper limit for the sum of connected_clients, connected_slaves and cluster_connections. |
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| client_recent_max_input_buffer | byte | Biggest input buffer among current client connections |
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| client_recent_max_output_buffer | byte | Biggest output buffer among current client connections |
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| blocked_clients | none | Number of clients pending on a blocking call (BLPOP, BRPOP, BRPOPLPUSH, BLMOVE, BZPOPMIN, BZPOPMAX) |
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| tracking_clients | none | Number of clients being tracked (CLIENT TRACKING) |
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| clients_in_timeout_table | none | Number of clients in the clients timeout table |
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#### Metric set：memory
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| Metric name | Metric unit | Metric help description |
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|---------------------------|----------|-----------------------------------------------------------------------------------------------|
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| used_memory | byte | Total number of bytes allocated by Redis using its allocator (either standard libc, jemalloc, or an alternative allocator such as tcmalloc) |
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| used_memory_human | GB/MB/KB | Human readable representation of previous value |
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| used_memory_rss | byte | Number of bytes that Redis allocated as seen by the operating system (a.k.a resident set size). This is the number reported by tools such as top(1) and ps(1) |
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| used_memory_rss_human | GB/MB/KB | Human readable representation of previous value值 |
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| used_memory_peak | byte | Peak memory consumed by Redis (in bytes) |
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| used_memory_peak_human | GB/MB/KB | Human readable representation of previous value |
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| used_memory_peak_perc | none | The percentage of used_memory_peak out of used_memory |
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| used_memory_overhead | byte | The sum in bytes of all overheads that the server allocated for managing its internal data structures |
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| used_memory_startup | byte | Initial amount of memory consumed by Redis at startup in bytes |
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| used_memory_dataset | byte | The size in bytes of the dataset (used_memory_overhead subtracted from used_memory) |
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| used_memory_dataset_perc | none | The percentage of used_memory_dataset out of the net memory usage (used_memory minus used_memory_startup) |
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| allocator_allocated | byte | Total bytes allocated form the allocator, including internal-fragmentation. Normally the same as used_memory. |
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| allocator_active | byte | Total bytes in the allocator active pages, this includes external-fragmentation. |
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| allocator_resident | byte | Total bytes resident (RSS) in the allocator, this includes pages that can be released to the OS (by MEMORY PURGE, or just waiting). |
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| total_system_memory | byte | The total amount of memory that the Redis host has |
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| total_system_memory_human | GB/MB/KB | Human readable representation of previous value |
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| used_memory_lua | byte | Number of bytes used by the Lua engine for EVAL scripts. Deprecated in Redis 7.0, renamed to used_memory_vm_eval |
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| used_memory_lua_human | KB | Human readable representation of previous value. Deprecated in Redis 7.0 |
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| used_memory_scripts | byte | used_memory_scripts_eval + used_memory_functions (part of used_memory). Added in Redis 7.0 |
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| used_memory_scripts_human | GB/MB/KB | Human readable representation of previous value |
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| number_of_cached_scripts | none | The number of EVAL scripts cached by the server. Added in Redis 7.0 |
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| maxmemory | byte | The value of the maxmemory configuration directive |
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| maxmemory_human | GB/MB/KB | Human readable representation of previous value |
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| maxmemory_policy | none | The value of the maxmemory-policy configuration directive |
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| allocator_frag_ratio | none | Ratio between allocator_active and allocator_allocated. This is the true (external) fragmentation metric (not mem_fragmentation_ratio). |
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| allocator_frag_bytes | byte | Delta between allocator_active and allocator_allocated. See note about mem_fragmentation_bytes. |
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| allocator_rss_ratio | | Ratio between allocator_resident and allocator_active. |
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| allocator_rss_bytes | byte | Delta between allocator_resident and allocator_active |
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| rss_overhead_ratio | none | Ratio between used_memory_rss (the process RSS) and allocator_resident. This includes RSS overheads that are not allocator or heap related. |
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| rss_overhead_bytes | byte | Delta between used_memory_rss (the process RSS) and allocator_resident |
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| mem_fragmentation_ratio | none | Ratio between used_memory_rss and used_memory. Note that this doesn't only includes fragmentation, but also other process overheads (see the allocator_* metrics), and also overheads like code, shared libraries, stack, etc. |
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| mem_fragmentation_bytes | byte | Delta between used_memory_rss and used_memory. Note that when the total fragmentation bytes is low (few megabytes), a high ratio (e.g. 1.5 and above) is not an indication of an issue. |
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| mem_not_counted_for_evict | byte | Used memory that's not counted for key eviction. This is basically transient replica and AOF buffers. |
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| mem_replication_backlog | byte | Memory used by replication backlog |
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| mem_clients_slaves | none | Memory used by replica clients - Starting Redis 7.0, replica buffers share memory with the replication backlog, so this field can show 0 when replicas don't trigger an increase of memory usage. |
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| mem_clients_normal | none | Memory used by normal clients |
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| mem_aof_buffer | none | Transient memory used for AOF and AOF rewrite buffers |
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| mem_allocator | none | Memory allocator, chosen at compile time. |
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| active_defrag_running | none | When activedefrag is enabled, this indicates whether defragmentation is currently active, and the CPU percentage it intends to utilize. |
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| lazyfree_pending_objects | none | The number of objects waiting to be freed (as a result of calling UNLINK, or FLUSHDB and FLUSHALL with the ASYNC option) |
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| lazyfreed_objects | none | The number of objects that have been lazy freed. |
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#### Metric set：persistence
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| Metric name | Metric unit | Metric help description |
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|------------------------------|--------|-----------------------------------------------------------------------------------------------------|
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| loading | none | Flag indicating if the load of a dump file is on-going |
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| current_cow_size | byte | The size in bytes of copy-on-write memory while a child fork is running |
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| current_cow_size_age | second | The age, in seconds, of the current_cow_size value. |
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| current_fork_perc | none | The percentage of progress of the current fork process. For AOF and RDB forks it is the percentage of current_save_keys_processed out of |
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| current_save_keys_processed | none | Number of keys processed by the current save operation |
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| current_save_keys_total | none | Number of keys at the beginning of the current save operation |
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| rdb_changes_since_last_save | none | Number of changes since the last dump |
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| rdb_bgsave_in_progress | none | Flag indicating a RDB save is on-going |
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| rdb_last_save_time | second | Epoch-based timestamp of last successful RDB save |
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| rdb_last_bgsave_status | none | Status of the last RDB save operation |
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| rdb_last_bgsave_time_sec | second | Duration of the last RDB save operation in seconds |
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| rdb_current_bgsave_time_sec | none | Duration of the on-going RDB save operation if any |
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| rdb_last_cow_size | none | The size in bytes of copy-on-write memory during the last RDB save operation |
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| aof_enabled | none | Flag indicating AOF logging is activated |
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| aof_rewrite_in_progress | none | Flag indicating a AOF rewrite operation is on-going |
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| aof_rewrite_scheduled | none | Flag indicating an AOF rewrite operation will be scheduled once the on-going RDB save is complete. |
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| aof_last_rewrite_time_sec | none | Duration of the last AOF rewrite operation in seconds |
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| aof_current_rewrite_time_sec | second | Duration of the on-going AOF rewrite operation if any |
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| aof_last_bgrewrite_status | none | Status of the last AOF rewrite operation |
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| aof_last_write_status | none | Status of the last write operation to the AOF |
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| aof_last_cow_size | none | The size in bytes of copy-on-write memory during the last AOF rewrite operation |
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| module_fork_in_progress | none | Flag indicating a module fork is on-going |
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| module_fork_last_cow_size | none | The size in bytes of copy-on-write memory during the last module fork operation |
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#### Metric set：stats
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| Metric name | Metric unit | Metric help description |
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|--------------------------------|------|----------------------------------------------------|
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| total_connections_received | none | Total number of connections accepted by the server |
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| total_commands_processed | none | Total number of commands processed by the server |
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| instantaneous_ops_per_sec | none | Number of commands processed per second |
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| total_net_input_bytes | byte | The total number of bytes read from the network |
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| total_net_output_bytes | byte | The total number of bytes written to the network |
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| instantaneous_input_kbps | KB/S | The network's read rate per second in KB/sec |
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| instantaneous_output_kbps | KB/S | The network's write rate per second in KB/sec |
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| rejected_connections | none | Number of connections rejected because of maxclients limit |
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| sync_full | none | The number of full resyncs with replicas |
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| sync_partial_ok | none | The number of accepted partial resync requests |
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| sync_partial_err | none | The number of denied partial resync requests |
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| expired_keys | none | Total number of key expiration events |
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| expired_stale_perc | none | The percentage of keys probably expired |
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| expired_time_cap_reached_count | none | The count of times that active expiry cycles have stopped early |
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| expire_cycle_cpu_milliseconds | none | The cumulative amount of time spent on active expiry cycles |
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| evicted_keys | none | Number of evicted keys due to maxmemory limit |
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| keyspace_hits | none | Number of successful lookup of keys in the main dictionary |
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| keyspace_misses | none | Number of failed lookup of keys in the main dictionary |
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| pubsub_channels | none | Global number of pub/sub channels with client subscriptions |
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| pubsub_patterns | none | Global number of pub/sub pattern with client subscriptions |
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| latest_fork_usec | none | Duration of the latest fork operation in microseconds |
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| total_forks | none | Total number of fork operations since the server start |
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| migrate_cached_sockets | none | The number of sockets open for MIGRATE purposes |
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| slave_expires_tracked_keys | none | The number of keys tracked for expiry purposes (applicable only to writable replicas) |
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| active_defrag_hits | none | Number of value reallocations performed by active the defragmentation process |
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| active_defrag_misses | none | Number of aborted value reallocations started by the active defragmentation process |
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| active_defrag_key_hits | none | Number of keys that were actively defragmented |
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| active_defrag_key_misses | none | Number of keys that were skipped by the active defragmentation process |
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| tracking_total_keys | none | Number of keys being tracked by the server |
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| tracking_total_items | none | Number of items, that is the sum of clients number for each key, that are being tracked |
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| tracking_total_prefixes | none | Number of tracked prefixes in server's prefix table (only applicable for broadcast mode) |
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| unexpected_error_replies | none | Number of unexpected error replies, that are types of errors from an AOF load or replication |
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| total_error_replies | none | Total number of issued error replies, that is the sum of rejected commands (errors prior command execution) and failed commands (errors within the command execution) |
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| dump_payload_sanitizations | none | Total number of dump payload deep integrity validations (see sanitize-dump-payload config). |
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| total_reads_processed | none | Total number of read events processed |
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| total_writes_processed | none | Total number of write events processed |
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| io_threaded_reads_processed | none | Number of read events processed by the main and I/O threads |
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| io_threaded_writes_processed | none | Number of write events processed by the main and I/O threads |
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#### Metric set：replication
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| Metric name | Metric unit | Metric help description |
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|--------------------------------|------|-------------------------------------------------------------------------------------|
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| role | none | Value is "master" if the instance is replica of no one, or "slave" if the instance is a replica of some master instance. Note that a replica can be master of another replica (chained replication). |
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| connected_slaves | none | Number of connected replicas |
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| master_failover_state | none | The state of an ongoing failover, if any. |
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| master_replid | none | The replication ID of the Redis server. |
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| master_replid2 | none | The secondary replication ID, used for PSYNC after a failover. |
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| master_repl_offset | none | The server's current replication offset |
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| second_repl_offset | none | The offset up to which replication IDs are accepted |
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| repl_backlog_active | none | Flag indicating replication backlog is active |
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| repl_backlog_size | byte | Total size in bytes of the replication backlog buffer |
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| repl_backlog_first_byte_offset | none | The master offset of the replication backlog buffer |
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| repl_backlog_histlen | none | Size in bytes of the data in the replication backlog buffer |
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#### Metric set：cpu
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| Metric name | Metric unit | Metric help description |
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|---------------------------|------|------------------------|
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| used_cpu_sys | none | System CPU consumed by the Redis server, which is the sum of system CPU consumed by all threads of the server process (main thread and background threads) |
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| used_cpu_user | none | User CPU consumed by the Redis server, which is the sum of user CPU consumed by all threads of the server process (main thread and background threads) |
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| used_cpu_sys_children | none | System CPU consumed by the background processes |
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| used_cpu_user_children | none | User CPU consumed by the background processes |
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| used_cpu_sys_main_thread | none | System CPU consumed by the Redis server main thread |
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| used_cpu_user_main_thread | none | User CPU consumed by the Redis server main thread |
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#### Metric set：errorstats
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| Metric name | Metric unit | Metric help description |
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|-------------------|------|-----------|
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| errorstat_ERR | none | ERR count |
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| errorstat_MISCONF | none | MISCONF count |
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#### Metric set：cluster
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| Metric name | Metric unit | Metric help description |
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|-----------------|------|--------------------|
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| cluster_enabled | none | Indicate Redis cluster is enabled |
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#### Metric set：commandstats
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| Metric name | Metric unit | Metric help description |
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|---------------|------|---------------------------------------------------------------------------------------------------------------------------|
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| cmdstat_set | none | set command stat |
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| cmdstat_get | none | get command stat |
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| cmdstat_setnx | none | setnx command stat |
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| cmdstat_hset | none | hset command stat |
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| cmdstat_hget | none | hget command stat |
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| cmdstat_lpush | none | lpush command stat |
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| cmdstat_rpush | none | rpush command stat |
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| cmdstat_lpop | none | lpop command stat |
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| cmdstat_rpop | none | rpop command stat |
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| cmdstat_llen | none | llen command stat |
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