228 lines
7.2 KiB
Markdown
228 lines
7.2 KiB
Markdown
# Docker Input Plugin
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The docker plugin uses the docker remote API to gather metrics on running
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docker containers. You can read Docker's documentation for their remote API
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[here](https://docs.docker.com/engine/reference/api/docker_remote_api_v1.20/#get-container-stats-based-on-resource-usage)
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The docker plugin uses the excellent
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[docker engine-api](https://github.com/docker/engine-api) library to
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gather stats. Documentation for the library can be found
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[here](https://godoc.org/github.com/docker/engine-api) and documentation
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for the stat structure can be found
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[here](https://godoc.org/github.com/docker/engine-api/types#Stats)
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### Configuration:
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```
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# Read metrics about docker containers
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[[inputs.docker]]
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## Docker Endpoint
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## To use TCP, set endpoint = "tcp://[ip]:[port]"
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## To use environment variables (ie, docker-machine), set endpoint = "ENV"
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endpoint = "unix:///var/run/docker.sock"
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## Only collect metrics for these containers. Values will be appended to container_name_include.
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## Deprecated (1.4.0), use container_name_include
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container_names = []
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## Containers to include and exclude. Collect all if empty. Globs accepted.
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container_name_include = []
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container_name_exclude = []
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## Timeout for docker list, info, and stats commands
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timeout = "5s"
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## Whether to report for each container per-device blkio (8:0, 8:1...) and
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## network (eth0, eth1, ...) stats or not
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perdevice = true
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## Whether to report for each container total blkio and network stats or not
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total = false
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## docker labels to include and exclude as tags. Globs accepted.
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## Note that an empty array for both will include all labels as tags
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docker_label_include = []
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docker_label_exclude = []
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## Which environment variables should we use as a tag
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tag_env = ["JAVA_HOME", "HEAP_SIZE"]
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```
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### Measurements & Fields:
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Every effort was made to preserve the names based on the JSON response from the
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docker API.
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Note that the docker_container_cpu metric may appear multiple times per collection,
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based on the availability of per-cpu stats on your system.
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- docker_container_mem
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- total_pgmafault
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- cache
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- mapped_file
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- total_inactive_file
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- pgpgout
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- rss
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- total_mapped_file
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- writeback
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- unevictable
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- pgpgin
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- total_unevictable
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- pgmajfault
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- total_rss
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- total_rss_huge
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- total_writeback
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- total_inactive_anon
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- rss_huge
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- hierarchical_memory_limit
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- total_pgfault
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- total_active_file
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- active_anon
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- total_active_anon
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- total_pgpgout
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- total_cache
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- inactive_anon
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- active_file
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- pgfault
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- inactive_file
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- total_pgpgin
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- max_usage
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- usage
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- failcnt
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- limit
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- container_id
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- docker_container_cpu
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- throttling_periods
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- throttling_throttled_periods
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- throttling_throttled_time
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- usage_in_kernelmode
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- usage_in_usermode
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- usage_system
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- usage_total
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- usage_percent
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- container_id
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- docker_container_net
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- rx_dropped
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- rx_bytes
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- rx_errors
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- tx_packets
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- tx_dropped
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- rx_packets
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- tx_errors
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- tx_bytes
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- container_id
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- docker_container_blkio
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- io_service_bytes_recursive_async
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- io_service_bytes_recursive_read
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- io_service_bytes_recursive_sync
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- io_service_bytes_recursive_total
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- io_service_bytes_recursive_write
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- io_serviced_recursive_async
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- io_serviced_recursive_read
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- io_serviced_recursive_sync
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- io_serviced_recursive_total
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- io_serviced_recursive_write
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- container_id
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- docker_
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- n_used_file_descriptors
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- n_cpus
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- n_containers
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- n_containers_running
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- n_containers_stopped
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- n_containers_paused
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- n_images
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- n_goroutines
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- n_listener_events
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- memory_total
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- pool_blocksize
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- docker_data
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- available
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- total
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- used
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- docker_metadata
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- available
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- total
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- used
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### Tags:
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#### Docker Engine tags
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- docker (memory_total)
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- unit=bytes
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- engine_host
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- docker (pool_blocksize)
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- unit=bytes
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- engine_host
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- docker_data
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- unit=bytes
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- engine_host
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- docker_metadata
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- unit=bytes
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- engine_host
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#### Docker Container tags
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- Tags on all containers:
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- engine_host
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- container_image
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- container_name
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- container_version
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- docker_container_mem specific:
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- docker_container_cpu specific:
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- cpu
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- docker_container_net specific:
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- network
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- docker_container_blkio specific:
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- device
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### Example Output:
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```
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% ./telegraf --config ~/ws/telegraf.conf --input-filter docker --test
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* Plugin: docker, Collection 1
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> docker n_cpus=8i 1456926671065383978
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> docker n_used_file_descriptors=15i 1456926671065383978
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> docker n_containers=7i 1456926671065383978
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> docker n_containers_running=7i 1456926671065383978
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> docker n_containers_stopped=3i 1456926671065383978
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> docker n_containers_paused=0i 1456926671065383978
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> docker n_images=152i 1456926671065383978
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> docker n_goroutines=36i 1456926671065383978
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> docker n_listener_events=0i 1456926671065383978
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> docker,unit=bytes memory_total=18935443456i 1456926671065383978
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> docker,unit=bytes pool_blocksize=65540i 1456926671065383978
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> docker_data,unit=bytes available=24340000000i,total=107400000000i,used=14820000000i 1456926671065383978
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> docker_metadata,unit=bytes available=2126999999i,total=2146999999i,used=20420000i 145692667106538
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> docker_container_mem,
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container_image=spotify/kafka,container_name=kafka \
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active_anon=52568064i,active_file=6926336i,cache=12038144i,fail_count=0i,\
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hierarchical_memory_limit=9223372036854771712i,inactive_anon=52707328i,\
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inactive_file=5111808i,limit=1044578304i,mapped_file=10301440i,\
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max_usage=140656640i,pgfault=63762i,pgmajfault=2837i,pgpgin=73355i,\
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pgpgout=45736i,rss=105275392i,rss_huge=4194304i,total_active_anon=52568064i,\
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total_active_file=6926336i,total_cache=12038144i,total_inactive_anon=52707328i,\
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total_inactive_file=5111808i,total_mapped_file=10301440i,total_pgfault=63762i,\
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total_pgmafault=0i,total_pgpgin=73355i,total_pgpgout=45736i,\
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total_rss=105275392i,total_rss_huge=4194304i,total_unevictable=0i,\
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total_writeback=0i,unevictable=0i,usage=117440512i,writeback=0i 1453409536840126713
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> docker_container_cpu,
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container_image=spotify/kafka,container_name=kafka,cpu=cpu-total \
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throttling_periods=0i,throttling_throttled_periods=0i,\
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throttling_throttled_time=0i,usage_in_kernelmode=440000000i,\
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usage_in_usermode=2290000000i,usage_system=84795360000000i,\
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usage_total=6628208865i 1453409536840126713
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> docker_container_cpu,
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container_image=spotify/kafka,container_name=kafka,cpu=cpu0 \
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usage_total=6628208865i 1453409536840126713
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> docker_container_net,\
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container_image=spotify/kafka,container_name=kafka,network=eth0 \
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rx_bytes=7468i,rx_dropped=0i,rx_errors=0i,rx_packets=94i,tx_bytes=946i,\
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tx_dropped=0i,tx_errors=0i,tx_packets=13i 1453409536840126713
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> docker_container_blkio,
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container_image=spotify/kafka,container_name=kafka,device=8:0 \
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io_service_bytes_recursive_async=80216064i,io_service_bytes_recursive_read=79925248i,\
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io_service_bytes_recursive_sync=77824i,io_service_bytes_recursive_total=80293888i,\
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io_service_bytes_recursive_write=368640i,io_serviced_recursive_async=6562i,\
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io_serviced_recursive_read=6492i,io_serviced_recursive_sync=37i,\
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io_serviced_recursive_total=6599i,io_serviced_recursive_write=107i 1453409536840126713
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```
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