Linkerd

Linkerd is an open source service mesh designed to be deployed into a variety of container schedulers and frameworks such as kubernetes.

Prerequisite

Edit the file agent/packaging/kubernetes/opsramp/agent/conf/app/metrics/linkerd/auto-monitoring.yaml
Set prometheus_metrics_port to linkerd prometheus endpoint port (on which it is exposing metrics)

Configuring the credentials

Configure the credentials in the directory /opt/opsramp/agent/conf/app.d/creds.yaml

linkerd:
- name: linkerd
  user: <username>
  pwd: <Password>
  encoding-type: plain
  labels:
    key1: val1
    key2: val2

Configuring the application

Kubernetes environment

Configure the application in config.yaml

- name: linkerd
  container-checks:
    image-check:
      - controller
    port-check:
      - 8085

Validate

Go to Resources under the Infrastructure tab to check if your resources are onboarded and the metrics are collected.

Supported metrics

OpsRamp Metric	Metric Display Name	Unit
linkerd_request_total Total count of HTTP requests.	Request Total	requests/second
linkerd_response_latency Avg Elapsed times between request headers being received and its response stream completing since last pool.	Response Latency	milliseconds
linkerd_response_total Total count of HTTP responses.	Response Total	responses/second
linkerd_retry_skipped_total Total count of retryable HTTP responses that were not retried.	Retry Skipped Total	responses/second
linkerd_route_request_total Total count of route HTTP requests.	Route Request Total	requests/second
linkerd_route_response_latency Avg Elapsed times between a route request headers being received and its response stream completing since last pool.	Route Response Latency	milliseconds
linkerd_route_response_total Total count of route HTTP responses.	Route Response Total	responses/second
linkerd_route_retry_skipped_total Total count of retryable route HTTP responses that were not retried.	Route Retry Skipped Total	responses/second
linkerd_route_actual_request_total Total count of actual route HTTP requests.	Route Actual Request Total	requests/second
linkerd_route_actual_response_latency Avg Elapsed times between a actual route request headers being received and its response stream completing since last pool.	Route Actual Response Latency	milliseconds
linkerd_route_actual_response_total Total count of actual route HTTP responses.	Route Actual Response Total	responses/second
linkerd_route_actual_retry_skipped_total Total count of retryable actual route HTTP responses that were not retried.	Route Actual Retry Skipped Total	responses/second
linkerd_tcp_open_total Total count of opened connections.	Tcp Open Total	connections/second
linkerd_tcp_open_connections Number of currently-open connections.	Tcp Open Connections	Connections
linkerd_tcp_read_bytes_total Total count of bytes read from peers.	Tcp Read Bytes Total	bytes/second
linkerd_tcp_write_bytes_total Total count of bytes written to peers.	Tcp Write Bytes Total	bytes/second
linkerd_tcp_close_total Total count of closed connections.	Tcp Close Total	connections/second
linkerd_tcp_connection_duration Avg Connection lifetimes since last pool.	Tcp Connection Duration	milliseconds
linkerd_control_request_total Total count of control HTTP requests.	Control Request Total	requests/second
linkerd_control_response_latency Avg Elapsed times between a control request headers being received and its response stream completing since last pool.	Control Response Latency	milliseconds
linkerd_control_response_total Total count of control HTTP responses.	Control Response Total	responses/second
linkerd_control_retry_skipped_total Total count of retryable control HTTP responses that were not retried.	Control Retry Skipped Total	responses/second
linkerd_process_start_time Time that the process started (in seconds since the UNIX epoch).	Process Start Time	seconds
linkerd_process_cpu_seconds_total Total user and system CPU time spent in seconds.	Process Cpu Seconds Total	seconds
linkerd_process_open_fds Number of open file descriptors.	Process Open Fds	Files
linkerd_process_max_fds Maximum number of open file descriptors.	Process Max Fds	Files
linkerd_process_virtual_memory Virtual memory size in bytes.	Process Virtual Memory	bytes
linkerd_process_resident_memory Resident memory size in bytes.	Process Resident Memory	ytes