Frequently asked questions

Running Scope in a Kubernetes setting

This is answered in our docs. you can choose between two options, either clone the source of Weave Scope, or use the YAML manifests from cloud.weave.works.

Disabling Scope Write Access

Can be done by using the probe.no-controls option and set it to true for the scope agents. This can be done in the scope agents' manifests under the weave-scope-cluster-agent deployment and weave-scope-agent daemonset argument section with --probe.no-controls=true.

RBAC and Weave Scope OSS

OSS Scope has no user concept. To limit the access to the UI,

• setup a reverse proxy with auth and block access to non admin users,

• capture the calls with something like Chrome network console to get the endpoints to know which requests to authenticate in the proxy server.

• you can use Basic HTTP Auth since Scope 1.10.0 - just use these command line arguments:

  --app.basicAuth
        Enable basic authentication for app
  --app.basicAuth.password string
        Password for basic authentication (default "admin")
  --app.basicAuth.username string
        Username for basic authentication (default "admin")
  --probe.basicAuth
        Enable basic authentication for app
  --probe.basicAuth.password string
        Password for basic authentication (default "admin")
  --probe.basicAuth.username string
        Username for basic authentication (default "admin")

  or alternatively set the environment variables to use the same authentication for Scope app and Scope probe:

  ENABLE_BASIC_AUTH: set to "true"
  BASIC_AUTH_USERNAME: set to the desired user (default "admin")
  BASIC_AUTH_PASSWORD: set to the desired password (default "admin")

  Note that there is no standard programmatic way of expiring a session with Basic Auth, so the users would normally stayed logged in until the authentication params have changed. See this article for more details.

ARM Support

• It required patches, @adivyoseph (on #scope) had done some work on this.
• #2110 says that scope's CI builds ARM32 (but not ARM64) for test-builds at least.
• @errordeveloper says: It should be easy to add arm64 in CI, You can try and enable builds in ci on a branch.. In theory, you just need to build for GOARCH=arm64.

LDAP Support

Scope doesn't support LDAP right now.

Data Storage

OSS Scope reports aren't persistent and the probe keeps the last 15 seconds of metrics in memory.

Admin Endpoints

Scope exposes the following http endpoints that can be used for troubleshooting:

• /admin/summary - lists the reports being used by the app, with counts of each node type (containers, processes, etc.).

API Endpoints

Scope exposes the following endpoints that can be used by external monitoring services.

• /api - Scope status and configuration
• /api/probes - basic status of Scope probes
• /api/report - returns a full JSON report
• /api/topology - information on all topologies
• /api/topology/[TOPOLOGY] - information on all nodes belonging to TOPOLOGY topology
• /api/topology/[TOPOLOGY]/[NODE_ID] - information on specific node NODE_ID in topology TOPOLOGY (currently NODE_ID must be an internal Scope node ID obtained from the URL field selectedNodeId when selecting that node in the UI - see #3122 for a proposal of a better solution)

Using a different port

You can use scope launch --app.http.address=127.0.0.1:9000 to run the http server on another port (in this case 9000).