Use Docker-socket-proxy in telegraf configuration

monitoring/docker-compose.yaml

@@ -109,7 +109,8 @@ services:
      - ./telegraf_net.conf:/etc/telegraf/telegraf.conf:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
     networks:
-     - monitoring
+      - monitoring
+      - dockersocket
     labels:
       - "docker.group=monitoring"
     depends_on:
@@ -121,3 +122,5 @@ networks:
     external: true
   web:
     external: true
+  dockersocket:
+    external: true

monitoring/telegraf_host.conf

@@ -169,82 +169,6 @@
   ## Uncomment to remove deprecated metrics.
   # fielddrop = ["uptime_format"]
 
-
-
-# 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 = []
-
-  ## Set the source tag for the metrics to the container ID hostname, eg first 12 chars
-  source_tag = false
-
-  ## Containers to include and exclude. Collect all if empty. Globs accepted.
-  container_name_include = []
-  container_name_exclude = []
-
-  ## Container states to include and exclude. Globs accepted.
-  ## When empty only containers in the "running" state will be captured.
-  ## example: container_state_include = ["created", "restarting", "running", "removing", "paused", "exited", "dead"]
-  ## example: container_state_exclude = ["created", "restarting", "running", "removing", "paused", "exited", "dead"]
-  # container_state_include = []
-  # container_state_exclude = []
-
-  ## Timeout for docker list, info, and stats commands
-  timeout = "5s"
-
-  ## Whether to report for each container per-device blkio (8:0, 8:1...),
-  ## network (eth0, eth1, ...) and cpu (cpu0, cpu1, ...) stats or not.
-  ## Usage of this setting is discouraged since it will be deprecated in favor of 'perdevice_include'.
-  ## Default value is 'true' for backwards compatibility, please set it to 'false' so that 'perdevice_include' setting 
-  ## is honored.
-  perdevice = false
-  
-  ## Specifies for which classes a per-device metric should be issued
-  ## Possible values are 'cpu' (cpu0, cpu1, ...), 'blkio' (8:0, 8:1, ...) and 'network' (eth0, eth1, ...)
-  ## Please note that this setting has no effect if 'perdevice' is set to 'true'
-  perdevice_include = ["cpu", "blkio", "network"]
-  
-  ## Whether to report for each container total blkio and network stats or not.
-  ## Usage of this setting is discouraged since it will be deprecated in favor of 'total_include'.
-  ## Default value is 'false' for backwards compatibility, please set it to 'true' so that 'total_include' setting 
-  ## is honored.
-  total = true
-  
-  ## Specifies for which classes a total metric should be issued. Total is an aggregated of the 'perdevice' values.
-  ## Possible values are 'cpu', 'blkio' and 'network'  
-  ## Total 'cpu' is reported directly by Docker daemon, and 'network' and 'blkio' totals are aggregated by this plugin.
-  ## Please note that this setting has no effect if 'total' is set to 'false'
-  total_include = ["cpu", "blkio", "network"]
-
-  ## 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 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
-
-
 # Gather metrics about network interfaces
 [[inputs.net]]
   ## By default, telegraf gathers stats from any up interface (excluding loopback)

monitoring/telegraf_net.conf

@@ -102,5 +102,77 @@
     data_format = "json"  
   
 
+# 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 = "tcp://docker-socket-proxy:2375"
+  #  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 = []
+
+  ## Set the source tag for the metrics to the container ID hostname, eg first 12 chars
+  source_tag = false
+
+  ## Containers to include and exclude. Collect all if empty. Globs accepted.
+  container_name_include = []
+  container_name_exclude = []
+
+  ## Container states to include and exclude. Globs accepted.
+  ## When empty only containers in the "running" state will be captured.
+  ## example: container_state_include = ["created", "restarting", "running", "removing", "paused", "exited", "dead"]
+  ## example: container_state_exclude = ["created", "restarting", "running", "removing", "paused", "exited", "dead"]
+  # container_state_include = []
+  # container_state_exclude = []
+
+  ## Timeout for docker list, info, and stats commands
+  timeout = "5s"
+  
+  ## Whether to report for each container per-device blkio (8:0, 8:1...),
+  ## network (eth0, eth1, ...) and cpu (cpu0, cpu1, ...) stats or not.
+  ## Usage of this setting is discouraged since it will be deprecated in favor of 'perdevice_include'.
+  ## Default value is 'true' for backwards compatibility, please set it to 'false' so that 'perdevice_include' setting
+  ## is honored.
+  perdevice = false
+
+  ## Specifies for which classes a per-device metric should be issued
+  ## Possible values are 'cpu' (cpu0, cpu1, ...), 'blkio' (8:0, 8:1, ...) and 'network' (eth0, eth1, ...)
+  ## Please note that this setting has no effect if 'perdevice' is set to 'true'
+  perdevice_include = ["cpu", "blkio", "network"]
+
+  ## Whether to report for each container total blkio and network stats or not.
+  ## Usage of this setting is discouraged since it will be deprecated in favor of 'total_include'.
+  ## Default value is 'false' for backwards compatibility, please set it to 'true' so that 'total_include' setting
+  ## is honored.
+  total = true
+
+  ## Specifies for which classes a total metric should be issued. Total is an aggregated of the 'perdevice' values.
+  ## Possible values are 'cpu', 'blkio' and 'network'
+  ## Total 'cpu' is reported directly by Docker daemon, and 'network' and 'blkio' totals are aggregated by this plugin.
+  ## Please note that this setting has no effect if 'total' is set to 'false'
+  total_include = ["cpu", "blkio", "network"]
+
+  ## 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 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
 

proxy/docker-compose.yaml

@@ -36,7 +36,7 @@ services:
       - "443:443"
     networks:
       - web
-      - proxy
+      - dockersocket
     volumes:
       - ${VOLUMES_PATH}/letsencrypt:/letsencrypt
       - $PWD/tls.toml:/etc/traefik/tls.toml
@@ -59,9 +59,12 @@ services:
     volumes: 
       - /var/run/docker.sock:/var/run/docker.sock:ro
     environment:
-      CONTAINERS: 1
+      # grant privileges as environment variables: https://github.com/Tecnativa/docker-socket-proxy#grant-or-revoke-access-to-certain-api-sections
+      - CONTAINERS=1
+      - INFO=1      
     networks:
-      - proxy
+      - dockersocket
+    privileged: true
 
 
 #  whoami:
@@ -80,4 +83,5 @@ services:
 networks:
   web:
     external: true
-  proxy:
+  dockersocket:
+    external: true