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.

Metrics


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