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MongoDB Input Plugin

Configuration:

[[inputs.mongodb]]
  ## An array of URLs of the form:
  ##   "mongodb://" [user ":" pass "@"] host [ ":" port]
  ## For example:
  ##   mongodb://user:[email protected]:27017,
  ##   mongodb://10.10.3.33:18832,
  servers = ["mongodb://127.0.0.1:27017"]

  ## When true, collect per database stats
  # gather_perdb_stats = false

  ## Optional TLS Config
  # tls_ca = "/etc/telegraf/ca.pem"
  # tls_cert = "/etc/telegraf/cert.pem"
  # tls_key = "/etc/telegraf/key.pem"
  ## Use TLS but skip chain & host verification
  # insecure_skip_verify = false

Permissions:

If your MongoDB instance has access control enabled you will need to connect as a user with sufficient rights.

With MongoDB 3.4 and higher, the clusterMonitor role can be used. In version 3.2 you may also need these additional permissions:

> db.grantRolesToUser("user", [{role: "read", actions: "find", db: "local"}])

If the user is missing required privileges you may see an error in the Telegraf logs similar to:

Error in input [mongodb]: not authorized on admin to execute command { serverStatus: 1, recordStats: 0 }

Metrics:

  • mongodb
    • tags:
      • hostname
    • fields:
      • active_reads (integer)
      • active_writes (integer)
      • commands (integer)
      • connections_current (integer)
      • connections_available (integer)
      • connections_total_created (integer)
      • cursor_timed_out_count (integer)
      • cursor_no_timeout_count (integer)
      • cursor_pinned_count (integer)
      • cursor_total_count (integer)
      • deletes (integer)
      • document_deleted (integer)
      • document_inserted (integer)
      • document_returned (integer)
      • document_updated (integer)
      • flushes (integer)
      • flushes_total_time_ns (integer)
      • getmores (integer)
      • inserts (integer
      • jumbo_chunks (integer)
      • member_status (string)
      • net_in_bytes_count (integer)
      • net_out_bytes_count (integer)
      • open_connections (integer)
      • percent_cache_dirty (float)
      • percent_cache_used (float)
      • queries (integer)
      • queued_reads (integer)
      • queued_writes (integer)
      • repl_commands (integer)
      • repl_deletes (integer)
      • repl_getmores (integer)
      • repl_inserts (integer)
      • repl_lag (integer)
      • repl_queries (integer)
      • repl_updates (integer)
      • repl_oplog_window_sec (integer)
      • resident_megabytes (integer)
      • state (string)
      • total_available (integer)
      • total_created (integer)
      • total_in_use (integer)
      • total_refreshing (integer)
      • ttl_deletes (integer)
      • ttl_passes (integer)
      • updates (integer)
      • vsize_megabytes (integer)
      • wtcache_app_threads_page_read_count (integer)
      • wtcache_app_threads_page_read_time (integer)
      • wtcache_app_threads_page_write_count (integer)
      • wtcache_bytes_read_into (integer)
      • wtcache_bytes_written_from (integer)
      • wtcache_pages_read_into (integer)
      • wtcache_pages_requested_from (integer)
      • wtcache_current_bytes (integer)
      • wtcache_max_bytes_configured (integer)
      • wtcache_internal_pages_evicted (integer)
      • wtcache_modified_pages_evicted (integer)
      • wtcache_unmodified_pages_evicted (integer)
      • wtcache_pages_evicted_by_app_thread (integer)
      • wtcache_pages_queued_for_eviction (integer)
      • wtcache_server_evicting_pages (integer)
      • wtcache_tracked_dirty_bytes (integer)
      • wtcache_worker_thread_evictingpages (integer)
      • commands_per_sec (integer, deprecated in 1.10; use commands))
      • cursor_no_timeout (integer, opened/sec, deprecated in 1.10; use cursor_no_timeout_count))
      • cursor_pinned (integer, opened/sec, deprecated in 1.10; use cursor_pinned_count))
      • cursor_timed_out (integer, opened/sec, deprecated in 1.10; use cursor_timed_out_count))
      • cursor_total (integer, opened/sec, deprecated in 1.10; use cursor_total_count))
      • deletes_per_sec (integer, deprecated in 1.10; use deletes))
      • flushes_per_sec (integer, deprecated in 1.10; use flushes))
      • getmores_per_sec (integer, deprecated in 1.10; use getmores))
      • inserts_per_sec (integer, deprecated in 1.10; use inserts))
      • net_in_bytes (integer, bytes/sec, deprecated in 1.10; use net_out_bytes_count))
      • net_out_bytes (integer, bytes/sec, deprecated in 1.10; use net_out_bytes_count))
      • queries_per_sec (integer, deprecated in 1.10; use queries))
      • repl_commands_per_sec (integer, deprecated in 1.10; use repl_commands))
      • repl_deletes_per_sec (integer, deprecated in 1.10; use repl_deletes)
      • repl_getmores_per_sec (integer, deprecated in 1.10; use repl_getmores)
      • repl_inserts_per_sec (integer, deprecated in 1.10; use repl_inserts))
      • repl_queries_per_sec (integer, deprecated in 1.10; use repl_queries))
      • repl_updates_per_sec (integer, deprecated in 1.10; use repl_updates))
      • ttl_deletes_per_sec (integer, deprecated in 1.10; use ttl_deltes))
      • ttl_passes_per_sec (integer, deprecated in 1.10; use ttl_passes))
      • updates_per_sec (integer, deprecated in 1.10; use updates))
  • mongodb_db_stats
    • tags:
      • db_name
      • hostname
    • fields:
      • avg_obj_size (float)
      • collections (integer)
      • data_size (integer)
      • index_size (integer)
      • indexes (integer)
      • num_extents (integer)
      • objects (integer)
      • ok (integer)
      • storage_size (integer)
      • type (string)
  • mongodb_shard_stats
    • tags:
      • hostname
    • fields:
      • in_use (integer)
      • available (integer)
      • created (integer)
      • refreshing (integer)

Example Output:

mongodb,hostname=127.0.0.1:27017 active_reads=0i,active_writes=0i,commands=1335i,commands_per_sec=7i,connections_available=814i,connections_current=5i,connections_total_created=0i,cursor_no_timeout=0i,cursor_no_timeout_count=0i,cursor_pinned=0i,cursor_pinned_count=1i,cursor_timed_out=0i,cursor_timed_out_count=0i,cursor_total=0i,cursor_total_count=1i,deletes=0i,deletes_per_sec=0i,document_deleted=0i,document_inserted=0i,document_returned=13i,document_updated=0i,flushes=5i,flushes_per_sec=0i,getmores=269i,getmores_per_sec=0i,inserts=0i,inserts_per_sec=0i,jumbo_chunks=0i,member_status="PRI",net_in_bytes=986i,net_in_bytes_count=358006i,net_out_bytes=23906i,net_out_bytes_count=661507i,open_connections=5i,percent_cache_dirty=0,percent_cache_used=0,queries=18i,queries_per_sec=3i,queued_reads=0i,queued_writes=0i,repl_commands=0i,repl_commands_per_sec=0i,repl_deletes=0i,repl_deletes_per_sec=0i,repl_getmores=0i,repl_getmores_per_sec=0i,repl_inserts=0i,repl_inserts_per_sec=0i,repl_lag=0i,repl_oplog_window_sec=24355215i,repl_queries=0i,repl_queries_per_sec=0i,repl_updates=0i,repl_updates_per_sec=0i,resident_megabytes=62i,state="PRIMARY",total_available=0i,total_created=0i,total_in_use=0i,total_refreshing=0i,ttl_deletes=0i,ttl_deletes_per_sec=0i,ttl_passes=23i,ttl_passes_per_sec=0i,updates=0i,updates_per_sec=0i,vsize_megabytes=713i,wtcache_app_threads_page_read_count=13i,wtcache_app_threads_page_read_time=74i,wtcache_app_threads_page_write_count=0i,wtcache_bytes_read_into=55271i,wtcache_bytes_written_from=125402i,wtcache_current_bytes=117050i,wtcache_max_bytes_configured=1073741824i,wtcache_pages_evicted_by_app_thread=0i,wtcache_pages_queued_for_eviction=0i,wtcache_server_evicting_pages=0i,wtcache_tracked_dirty_bytes=0i,wtcache_worker_thread_evictingpages=0i 1547159491000000000
mongodb_db_stats,db_name=admin,hostname=127.0.0.1:27017 avg_obj_size=241,collections=2i,data_size=723i,index_size=49152i,indexes=3i,num_extents=0i,objects=3i,ok=1i,storage_size=53248i,type="db_stat" 1547159491000000000
mongodb_db_stats,db_name=local,hostname=127.0.0.1:27017 avg_obj_size=813.9705882352941,collections=6i,data_size=55350i,index_size=102400i,indexes=5i,num_extents=0i,objects=68i,ok=1i,storage_size=204800i,type="db_stat" 1547159491000000000
mongodb_shard_stats,hostname=127.0.0.1:27017,in_use=3i,available=3i,created=4i,refreshing=0i 1522799074000000000