telegraf/plugins/inputs/docker

Docker Input Plugin

The docker plugin uses the Docker Engine API to gather metrics on running docker containers.

The docker plugin uses the Official Docker Client to gather stats from the Engine API. Library Documentation

Configuration:

# Read metrics about docker containers
[[inputs.docker]]
  ## Docker Endpoint
  ##   To use TCP, set endpoint = "tcp://[ip]:[port]"
  ##   To use environment variables (ie, docker-machine), set endpoint = "ENV"
  endpoint = "unix:///var/run/docker.sock"

  ## Set to true to collect Swarm metrics(desired_replicas, running_replicas)
  ## Note: configure this in one of the manager nodes in a Swarm cluster.
  ## configuring in multiple Swarm managers results in duplication of metrics.
  gather_services = false

  ## Only collect metrics for these containers. Values will be appended to
  ## container_name_include.
  ## Deprecated (1.4.0), use container_name_include
  container_names = []

  ## Containers to include and exclude. Collect all if empty. Globs accepted.
  container_name_include = []
  container_name_exclude = []

  ## Timeout for docker list, info, and stats commands
  timeout = "5s"

  ## Whether to report for each container per-device blkio (8:0, 8:1...) and
  ## network (eth0, eth1, ...) stats or not
  perdevice = true

  ## Whether to report for each container total blkio and network stats or not
  total = false

  ## docker labels to include and exclude as tags.  Globs accepted.
  ## Note that an empty array for both will include all labels as tags
  docker_label_include = []
  docker_label_exclude = []

  ## Which environment variables should we use as a tag
  tag_env = ["JAVA_HOME", "HEAP_SIZE"]

  ## Optional SSL Config
  # ssl_ca = "/etc/telegraf/ca.pem"
  # ssl_cert = "/etc/telegraf/cert.pem"
  # ssl_key = "/etc/telegraf/key.pem"
  ## Use SSL but skip chain & host verification
  # insecure_skip_verify = false

Environment Configuration

When using the "ENV" endpoint, the connection is configured using the cli Docker environment variables.

Kubernetes Labels

Kubernetes may add many labels to your containers, if they are not needed you may prefer to exclude them:

  docker_label_exclude = ["annotation.kubernetes*"]

Measurements & Fields:

Every effort was made to preserve the names based on the JSON response from the docker API.

Note that the docker_container_cpu metric may appear multiple times per collection, based on the availability of per-cpu stats on your system.

• docker_container_mem
  • total_pgmafault
  • cache
  • mapped_file
  • total_inactive_file
  • pgpgout
  • rss
  • total_mapped_file
  • writeback
  • unevictable
  • pgpgin
  • total_unevictable
  • pgmajfault
  • total_rss
  • total_rss_huge
  • total_writeback
  • total_inactive_anon
  • rss_huge
  • hierarchical_memory_limit
  • total_pgfault
  • total_active_file
  • active_anon
  • total_active_anon
  • total_pgpgout
  • total_cache
  • inactive_anon
  • active_file
  • pgfault
  • inactive_file
  • total_pgpgin
  • max_usage
  • usage
  • failcnt
  • limit
  • container_id
• docker_container_cpu
  • throttling_periods
  • throttling_throttled_periods
  • throttling_throttled_time
  • usage_in_kernelmode
  • usage_in_usermode
  • usage_system
  • usage_total
  • usage_percent
  • container_id
• docker_container_net
  • rx_dropped
  • rx_bytes
  • rx_errors
  • tx_packets
  • tx_dropped
  • rx_packets
  • tx_errors
  • tx_bytes
  • container_id
• docker_container_blkio
  • io_service_bytes_recursive_async
  • io_service_bytes_recursive_read
  • io_service_bytes_recursive_sync
  • io_service_bytes_recursive_total
  • io_service_bytes_recursive_write
  • io_serviced_recursive_async
  • io_serviced_recursive_read
  • io_serviced_recursive_sync
  • io_serviced_recursive_total
  • io_serviced_recursive_write
  • container_id
• docker_
  • n_used_file_descriptors
  • n_cpus
  • n_containers
  • n_containers_running
  • n_containers_stopped
  • n_containers_paused
  • n_images
  • n_goroutines
  • n_listener_events
  • memory_total
  • pool_blocksize
• docker_data
  • available
  • total
  • used
• docker_metadata
  • available
  • total
  • used
• docker_swarm
  • tasks_desired
  • tasks_running

Tags:

Docker Engine tags

• docker (memory_total)
  • unit=bytes
  • engine_host
• docker (pool_blocksize)
  • unit=bytes
  • engine_host
• docker_data
  • unit=bytes
  • engine_host
• docker_metadata
  • unit=bytes
  • engine_host

Docker Container tags

• Tags on all containers:
  • engine_host
  • container_image
  • container_name
  • container_version
• docker_container_mem specific:
• docker_container_cpu specific:
  • cpu
• docker_container_net specific:
  • network
• docker_container_blkio specific:
  • device
• docker_container_health specific:
  • health_status
  • failing_streak
• docker_swarm specific:
  • service_id
  • service_name
  • service_mode

Example Output:

% ./telegraf --config ~/ws/telegraf.conf --input-filter docker --test
* Plugin: docker, Collection 1
> docker n_cpus=8i 1456926671065383978
> docker n_used_file_descriptors=15i 1456926671065383978
> docker n_containers=7i 1456926671065383978
> docker n_containers_running=7i 1456926671065383978
> docker n_containers_stopped=3i 1456926671065383978
> docker n_containers_paused=0i 1456926671065383978
> docker n_images=152i 1456926671065383978
> docker n_goroutines=36i 1456926671065383978
> docker n_listener_events=0i 1456926671065383978
> docker,unit=bytes memory_total=18935443456i 1456926671065383978
> docker,unit=bytes pool_blocksize=65540i 1456926671065383978
> docker_data,unit=bytes available=24340000000i,total=107400000000i,used=14820000000i 1456926671065383978
> docker_metadata,unit=bytes available=2126999999i,total=2146999999i,used=20420000i 145692667106538
> docker_container_mem,
container_image=spotify/kafka,container_name=kafka \
active_anon=52568064i,active_file=6926336i,cache=12038144i,fail_count=0i,\
hierarchical_memory_limit=9223372036854771712i,inactive_anon=52707328i,\
inactive_file=5111808i,limit=1044578304i,mapped_file=10301440i,\
max_usage=140656640i,pgfault=63762i,pgmajfault=2837i,pgpgin=73355i,\
pgpgout=45736i,rss=105275392i,rss_huge=4194304i,total_active_anon=52568064i,\
total_active_file=6926336i,total_cache=12038144i,total_inactive_anon=52707328i,\
total_inactive_file=5111808i,total_mapped_file=10301440i,total_pgfault=63762i,\
total_pgmafault=0i,total_pgpgin=73355i,total_pgpgout=45736i,\
total_rss=105275392i,total_rss_huge=4194304i,total_unevictable=0i,\
total_writeback=0i,unevictable=0i,usage=117440512i,writeback=0i 1453409536840126713
> docker_container_cpu,
container_image=spotify/kafka,container_name=kafka,cpu=cpu-total \
throttling_periods=0i,throttling_throttled_periods=0i,\
throttling_throttled_time=0i,usage_in_kernelmode=440000000i,\
usage_in_usermode=2290000000i,usage_system=84795360000000i,\
usage_total=6628208865i 1453409536840126713
> docker_container_cpu,
container_image=spotify/kafka,container_name=kafka,cpu=cpu0 \
usage_total=6628208865i 1453409536840126713
> docker_container_net,\
container_image=spotify/kafka,container_name=kafka,network=eth0 \
rx_bytes=7468i,rx_dropped=0i,rx_errors=0i,rx_packets=94i,tx_bytes=946i,\
tx_dropped=0i,tx_errors=0i,tx_packets=13i 1453409536840126713
> docker_container_blkio,
container_image=spotify/kafka,container_name=kafka,device=8:0 \
io_service_bytes_recursive_async=80216064i,io_service_bytes_recursive_read=79925248i,\
io_service_bytes_recursive_sync=77824i,io_service_bytes_recursive_total=80293888i,\
io_service_bytes_recursive_write=368640i,io_serviced_recursive_async=6562i,\
io_serviced_recursive_read=6492i,io_serviced_recursive_sync=37i,\
io_serviced_recursive_total=6599i,io_serviced_recursive_write=107i 1453409536840126713
>docker_swarm,
service_id=xaup2o9krw36j2dy1mjx1arjw,service_mode=replicated,service_name=test,\
tasks_desired=3,tasks_running=3 1508968160000000000