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    Installation of Tekton Results

    This document explains how to install Tekton Results using an existing database.

    NOTE

    Currently, the built-in PostgreSQL database is not supported, please use an external database.

    About external database please refer to Using PostgreSQL from Data Services

    Prerequisites

    1. Tekton Pipelines must be installed in the cluster.

      TIP

      The following instructions assume that you have installed Results into the tekton-pipelines namespace by default.

      If you have installed it into a different namespace, please replace tekton-pipelines with your namespace.

    2. Create a database root password.

      Users must generate a database root password and store it in a Kubernetes Secret before installation. By default, Tekton Results expects this Secret to have the following attributes:

      • Namespace: tekton-pipelines
      • Name: tekton-results-postgres
      • Including the following fields:
        • POSTGRES_USER=<your_username>
        • POSTGRES_PASSWORD=<your_password>

      You can quickly generate a Secret using the following command:

      kubectl create secret generic tekton-results-postgres --namespace="tekton-pipelines" --from-literal=POSTGRES_USER={POSTGRES} --from-literal=POSTGRES_PASSWORD={PASSWORD}

    3. Generate a certificate/key pair. Note: Any certificate management software can be used for this purpose!

      Tekton Results expects the certificate/key pair to be stored in a TLS Kubernetes Secret named tekton-results-tls.

      • Generate a new self-signed certificate

        openssl req -x509 \
  -newkey rsa:4096 \
  -keyout key.pem \
  -out cert.pem \
  -days 365 \
  -nodes \
  -subj "/CN=tekton-results-api-service.tekton-pipelines.svc.cluster.local" \
  -addext "subjectAltName = DNS:tekton-results-api-service.tekton-pipelines.svc.cluster.local"
        TIP

        If your openssl version is too low and does not support some parameters, please upgrade your openssl version from openssl binaries .

      • Create a new TLS Secret from the certificate.

        kubectl create secret tls -n tekton-pipelines tekton-results-tls \
  --cert=cert.pem \
  --key=key.pem

    4. Create a PVC if you are using PVC to store logs.

      cat <<EOF | kubectl create -f -
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: tekton-logs
  namespace: tekton-pipelines
spec:
  accessModes:
    - ReadWriteOnce  # The access mode indicating it can be read and written by a single node
  resources:
    requests:
      storage: 100Gi  # The requested storage size
EOF
      • Please adjust the PVC size as needed.

    Installing using operator CRD

    $ cat <<EOF | kubectl create -f -
apiVersion: operator.tekton.dev/v1alpha1
kind: TektonResult
metadata:
  name: result
spec:
  # Update with database address
  db_host: <database_host>
  db_port: 5432
  db_name: <database_name>
  # Use external database
  is_external_db: true
  # secret containing database account information created earlier
  secret_name: tekton-results-postgres
  # Basic settings
  server_port: 8080
  # Target namespace
  targetNamespace: tekton-pipelines
  # Disable authentication
  auth_disable: true
  db_enable_auto_migration: true
  log_level: debug
  # Use logs storage service
  logs_api: true
  logs_type: File
  logs_path: /logs
  logs_buffer_size: 92160
  logging_pvc_name: tekton-logs
EOF

    :::details {title="Explanation of YAML fields"}

    • db_host: The host of the database.
    • db_port: The port of the database.
    • db_name: The name of the database.
    • is_external_db: Whether to use an external database.
      • true: Use an external database.
    • secret_name: The name of the secret containing the database account information.
      • This is the secret created in the previous step.
    • server_port: The port of the server.
    • targetNamespace: The namespace where the Results is deployed.
    • auth_disable: Whether to disable authentication.
    • db_enable_auto_migration: Whether to enable automatic database migration.
    • log_level: The level of the log.
    • logs_api: Whether to enable the logs API.
      • true: Enable the logs API.
    • logs_type: The type of the logs.
      • File: Store logs in a file.
    • logs_path: The path of the logs.
    • logs_buffer_size: The buffer size of the logs.
    • logging_pvc_name: The name of the PVC to store the logs.
      • This is the PVC created in the previous step. :::
    TIP

    About more database configuration, please refer to PostgreSQL Configuration

    After deployment, you can see that the status of results-api / results-retention-policy-agent / results-watcher is Running

    $ kubectl get pods -n tekton-pipelines

NAME                                                    READY   STATUS    RESTARTS   AGE
tekton-results-api-68bb657996-bb487                     1/1     Running   0          14s
tekton-results-retention-policy-agent-c6ff5575b-prczg   1/1     Running   0          14s
tekton-results-watcher-6d7c68f576-p2gbl                 1/1     Running   0          14s

    Verify Functionality

    Functionality can be verified through a simple taskrun.

    1. Create a TaskRun resource

    $ cat <<'EOF' | kubectl create -f -
apiVersion: tekton.dev/v1
kind: TaskRun
metadata:
  name: hello
spec:
  taskSpec:
    steps:
      - name: hello
        image: alpine
        command: ["echo", "hello"]
EOF
    NOTE

    For air-gapped environments change the alpine image address to another present in the network

    2. Wait for the task execution to complete

    $ kubectl get taskruns.tekton.dev -n default -w

hello                                        Unknown     Pending     3s
hello                                        True        Succeeded   11s         0s

    3. Use curl to query results

    For more usage patterns, refer to the official documentation Tekton Results API

    Prepare permissions
    $ cat <<EOF | kubectl create -f -
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: tekton-results-readonly
rules:
  - apiGroups: ["results.tekton.dev"]
    resources: ["results", "records"]
    verbs: ["get", "list"]

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: tekton-results-impersonate
rules:
  - apiGroups: [""]
    resources: ["users", "groups", "serviceaccounts"]
    verbs: ["impersonate"]
  - apiGroups: ["authentication.k8s.io"]
    resources: ["uids"]
    verbs: ["impersonate"]

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: tekton-results-impersonate
subjects:
  - kind: ServiceAccount
    name: impersonate-admin
    namespace: tekton-pipelines
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: tekton-results-impersonate

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: tekton-results-user
  namespace: default
subjects:
  - kind: ServiceAccount
    name: impersonate-user
    namespace: user-namespace
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: tekton-results-readonly
EOF
    Verify permissions
    $ kubectl create --validate=false --as=system:serviceaccount:tekton-pipelines:tekton-results-watcher -n tekton-pipelines -f - -o yaml << EOF
apiVersion: authorization.k8s.io/v1
kind: SelfSubjectAccessReview
spec:
  resourceAttributes:
    group: results.tekton.dev
    resource: results
    verb: get
EOF

apiVersion: authorization.k8s.io/v1
kind: SelfSubjectAccessReview
metadata:
  creationTimestamp: null
spec:
  resourceAttributes:
    group: results.tekton.dev
    resource: results
    verb: get
status:
  allowed: true
  reason: 'RBAC: allowed by ClusterRoleBinding "tekton-results-watcher" of ClusterRole
    "tekton-results-watcher" to ServiceAccount "tekton-results-watcher/tekton-pipelines"'
    Forward Ports

    Proxy the service to the local port 8080

    $ kubectl port-forward -n tekton-pipelines service/tekton-results-api-service 8080
    Get Token
    $ token=$(kubectl create token impersonate-admin -n tekton-pipelines)
    Query Results
    $ curl -s -k \
  -H 'authorization: Bearer '${token} \
  -H 'Impersonate-User: system:serviceaccount:user-namespace:impersonate-user' \
  https://localhost:8080/apis/results.tekton.dev/v1alpha2/parents/default/results

{"results":[{"name":"default/results/0b165174-fd12-47f9-a8d8-c4ffcb1be0d4", "id":"65662a09-216a-4e6b-960c-260a2b05de9c", "uid":"65662a09-216a-4e6b-960c-260a2b05de9c", "createdTime":"2025-02-20T05:59:52.403661Z", "createTime":"2025-02-20T05:59:52.403661Z", "updatedTime":"2025-02-20T06:00:09.033206Z", "updateTime":"2025-02-20T06:00:09.033206Z", "annotations":{"object.metadata.name":"large-result-pipeline-run-c2mg4", "tekton.dev/pipeline":"large-result-pipeline"}, "etag":"65662a09-216a-4e6b-960c-260a2b05de9c-1740031209033206096", "summary":{"record":"default/results/0b165174-fd12-47f9-a8d8-c4ffcb1be0d4/records/0b165174-fd12-47f9-a8d8-c4ffcb1be0d4", "type":"tekton.dev/v1.PipelineRun", "startTime":null, "endTime":"2025-02-20T06:00:09Z", "status":"SUCCESS", "annotations":{}}}, {"name":"default/results/c308db48-9613-4652-8b5a-edd10eb9bda9", "id":"98d2bda3-2039-4e03-b78a-4e44637df4f2", "uid":"98d2bda3-2039-4e03-b78a-4e44637df4f2", "createdTime":"2025-02-20T05:25:44.226246Z", "createTime":"2025-02-20T05:25:44.226246Z", "updatedTime":"2025-02-20T13:12:20.823170Z", "updateTime":"2025-02-20T13:12:20.823170Z", "annotations":{"object.metadata.name":"hello"}, "etag":"98d2bda3-2039-4e03-b78a-4e44637df4f2-1740057140823170246", "summary":{"record":"default/results/c308db48-9613-4652-8b5a-edd10eb9bda9/records/c308db48-9613-4652-8b5a-edd10eb9bda9", "type":"tekton.dev/v1.TaskRun", "startTime":null, "endTime":"2025-02-20T13:12:20Z", "status":"SUCCESS", "annotations":{}}}, {"name":"default/results/e536090f-0819-46ae-86e6-1fe2fce6dc56", "id":"a7e8b252-bbce-4cb1-aa22-71cfb5a83639", "uid":"a7e8b252-bbce-4cb1-aa22-71cfb5a83639", "createdTime":"2025-02-20T13:13:33.323381Z", "createTime":"2025-02-20T13:13:33.323381Z", "updatedTime":"2025-02-20T13:13:45.480690Z", "updateTime":"2025-02-20T13:13:45.480690Z", "annotations":{"object.metadata.name":"large-result-pipeline-run-twnxc", "tekton.dev/pipeline":"large-result-pipeline"}, "etag":"a7e8b252-bbce-4cb1-aa22-71cfb5a83639-1740057225480690745", "summary":{"record":"default/results/e536090f-0819-46ae-86e6-1fe2fce6dc56/records/e536090f-0819-46ae-86e6-1fe2fce6dc56", "type":"tekton.dev/v1.PipelineRun", "startTime":null, "endTime":"2025-02-20T13:13:45Z", "status":"SUCCESS", "annotations":{}}}], "nextPageToken":""}

    4. Use tkn-results CLI to query results

    Preparing the CLI

    tkn is a command-line tool for interacting with Tekton. You can download it from the official page.

    You need to build tkn-results using golang.

    # 1. Clone the repository
git clone https://github.com/tektoncd/results.git

# 2. Change to the project directory
cd results

# 3. Build the binary
go build -o tkn-results ./cmd/tkn-results/main.go

# 4. Copy the binary to a directory in your PATH
    Querying the execution record list
    $ tkn results --insecure records list default/results/-

default/results/209dcb81-e3c0-47cd-b082-d910e15702ae/records/209dcb81-e3c0-47cd-b082-d910e15702ae  tekton.dev/v1.TaskRun                   2025-02-19 16:17:11 +0800 CST           2025-02-19 16:17:21 +0800 CST
default/results/209dcb81-e3c0-47cd-b082-d910e15702ae/records/a750035d-0479-34a1-9db2-9a256b53243f  results.tekton.dev/v1alpha3.Log         2025-02-19 16:17:21 +0800 CST           2025-02-19 16:17:21 +0800 CST
    Querying a single execution record
    $ tkn results --insecure records get -o textproto default/results/209dcb81-e3c0-47cd-b082-d910e15702ae/records/209dcb81-e3c0-47cd-b082-d910e15702ae

name: "default/results/209dcb81-e3c0-47cd-b082-d910e15702ae/records/209dcb81-e3c0-47cd-b082-d910e15702ae"
id: "0805bbd0-e390-40dc-a1ea-f65ae9401930"
uid: "0805bbd0-e390-40dc-a1ea-f65ae9401930"
data: {
  type: "tekton.dev/v1.TaskRun"
  value: "{\"kind\": \"TaskRun\", \"spec\": {\"timeout\": \"1h0m0s\", \"taskSpec\": {\"steps\": [{\"name\": \"hello\", \"image\": \"152-231-registry.alauda.cn:60070/ops/ubuntu:latest\", \"command\": [\"echo\", \"hello\"], \"computeResources\": {}}]}, \"serviceAccountName\": \"default\"}, \"status\": {\"steps\": [{\"name\": \"hello\", \"imageID\": \"alpine\", \"container\": \"step-hello\", \"terminated\": {\"reason\": \"Completed\", \"exitCode\": 0, \"startedAt\": \"2025-02-19T08:17:20Z\", \"finishedAt\": \"2025-02-19T08:17:20Z\", \"containerID\": \"containerd://5e2cb72ca758fc976744b06b5ee97564bcc0958ca9cee2a54fdaab64323a1bf9\"}, \"terminationReason\": \"Completed\"}], \"podName\": \"hello-pod\", \"taskSpec\": {\"steps\": [{\"name\": \"hello\", \"image\": \"152-231-registry.alauda.cn:60070/ops/ubuntu:latest\", \"command\": [\"echo\", \"hello\"], \"computeResources\": {}}]}, \"startTime\": \"2025-02-19T08:17:10Z\", \"conditions\": [{\"type\": \"Succeeded\", \"reason\": \"Succeeded\", \"status\": \"True\", \"message\": \"All Steps have completed executing\", \"lastTransitionTime\": \"2025-02-19T08:17:21Z\"}], \"provenance\": {\"featureFlags\": {\"Coschedule\": \"workspaces\", \"MaxResultSize\": 4096, \"EnableAPIFields\": \"beta\", \"EnableArtifacts\": false, \"EnableParamEnum\": false, \"DisableCredsInit\": false, \"EnableStepActions\": true, \"SetSecurityContext\": false, \"AwaitSidecarReadiness\": true, \"EnableKeepPodOnCancel\": false, \"EnableTektonOCIBundles\": false, \"ResultExtractionMethod\": \"termination-message\", \"SendCloudEventsForRuns\": false, \"DisableAffinityAssistant\": false, \"EnableProvenanceInStatus\": true, \"EnforceNonfalsifiability\": \"none\", \"EnableCELInWhenExpression\": false, \"VerificationNoMatchPolicy\": \"ignore\", \"ScopeWhenExpressionsToTask\": false, \"RequireGitSSHSecretKnownHosts\": false, \"RunningInEnvWithInjectedSidecars\": true}}, \"completionTime\": \"2025-02-19T08:17:21Z\"}, \"metadata\": {\"uid\": \"209dcb81-e3c0-47cd-b082-d910e15702ae\", \"name\": \"hello\", \"labels\": {\"app.kubernetes.io/managed-by\": \"tekton-pipelines\"}, \"namespace\": \"default\", \"finalizers\": [\"results.tekton.dev/taskrun\", \"chains.tekton.dev\"], \"generation\": 1, \"annotations\": {\"results.tekton.dev/log\": \"default/results/209dcb81-e3c0-47cd-b082-d910e15702ae/logs/a750035d-0479-34a1-9db2-9a256b53243f\", \"chains.tekton.dev/signed\": \"true\", \"results.tekton.dev/record\": \"default/results/209dcb81-e3c0-47cd-b082-d910e15702ae/records/209dcb81-e3c0-47cd-b082-d910e15702ae\", \"results.tekton.dev/result\": \"default/results/209dcb81-e3c0-47cd-b082-d910e15702ae\", \"pipeline.tekton.dev/release\": \"8bfd3273cbe7776847884d7fa5004481e6be8f4a\"}, \"managedFields\": [{\"time\": \"2025-02-19T08:17:10Z\", \"manager\": \"kubectl-create\", \"fieldsV1\": {\"f:spec\": {\".\": {}, \"f:taskSpec\": {\".\": {}, \"f:steps\": {}}}}, \"operation\": \"Update\", \"apiVersion\": \"tekton.dev/v1\", \"fieldsType\": \"FieldsV1\"}, {\"time\": \"2025-02-19T08:17:21Z\", \"manager\": \"controller\", \"fieldsV1\": {\"f:metadata\": {\"f:finalizers\": {\"v:\\\"chains.tekton.dev\\\"\": {}}, \"f:annotations\": {\"f:chains.tekton.dev/signed\": {}, \"f:pipeline.tekton.dev/release\": {}}}}, \"operation\": \"Update\", \"apiVersion\": \"tekton.dev/v1\", \"fieldsType\": \"FieldsV1\"}, {\"time\": \"2025-02-19T08:17:21Z\", \"manager\": \"controller\", \"fieldsV1\": {\"f:status\": {\".\": {}, \"f:steps\": {}, \"f:podName\": {}, \"f:taskSpec\": {\".\": {}, \"f:steps\": {}}, \"f:artifacts\": {}, \"f:startTime\": {}, \"f:conditions\": {}, \"f:provenance\": {\".\": {}, \"f:featureFlags\": {\".\": {}, \"f:Coschedule\": {}, \"f:MaxResultSize\": {}, \"f:EnableAPIFields\": {}, \"f:EnableArtifacts\": {}, \"f:EnableParamEnum\": {}, \"f:DisableCredsInit\": {}, \"f:DisableInlineSpec\": {}, \"f:EnableStepActions\": {}, \"f:SetSecurityContext\": {}, \"f:AwaitSidecarReadiness\": {}, \"f:EnableKeepPodOnCancel\": {}, \"f:ResultExtractionMethod\": {}, \"f:SendCloudEventsForRuns\": {}, \"f:EnableKubernetesSidecar\": {}, \"f:DisableAffinityAssistant\": {}, \"f:EnableProvenanceInStatus\": {}, \"f:EnforceNonfalsifiability\": {}, \"f:EnableCELInWhenExpression\": {}, \"f:VerificationNoMatchPolicy\": {}, \"f:EnableConciseResolverSyntax\": {}, \"f:RequireGitSSHSecretKnownHosts\": {}, \"f:RunningInEnvWithInjectedSidecars\": {}}}, \"f:completionTime\": {}}}, \"operation\": \"Update\", \"apiVersion\": \"tekton.dev/v1\", \"fieldsType\": \"FieldsV1\", \"subresource\": \"status\"}, {\"time\": \"2025-02-19T08:17:21Z\", \"manager\": \"watcher\", \"fieldsV1\": {\"f:metadata\": {\"f:finalizers\": {\".\": {}, \"v:\\\"results.tekton.dev/taskrun\\\"\": {}}, \"f:annotations\": {\".\": {}, \"f:results.tekton.dev/log\": {}, \"f:results.tekton.dev/record\": {}, \"f:results.tekton.dev/result\": {}}}}, \"operation\": \"Update\", \"apiVersion\": \"tekton.dev/v1\", \"fieldsType\": \"FieldsV1\"}], \"resourceVersion\": \"1592422\", \"creationTimestamp\": \"2025-02-19T08:17:10Z\"}, \"apiVersion\": \"tekton.dev/v1\"}"
}
etag: "0805bbd0-e390-40dc-a1ea-f65ae9401930-1739953041309658421"
created_time: {
  seconds: 1739953031
  nanos: 16922000
}
create_time: {
  seconds: 1739953031
  nanos: 16922000
}
updated_time: {
  seconds: 1739953041
  nanos: 309658000
}
update_time: {
  seconds: 1739953041
  nanos: 309658000
}
    Querying the log list
    $ tkn results --insecure logs list default/results/-

default/results/209dcb81-e3c0-47cd-b082-d910e15702ae/logs/a750035d-0479-34a1-9db2-9a256b53243f  results.tekton.dev/v1alpha3.Log         2025-02-19 16:17:21 +0800 CST           2025-02-19 16:17:21 +0800 CST
    Querying a single log
    $ tkn results --insecure logs get -o textproto default/results/209dcb81-e3c0-47cd-b082-d910e15702ae/logs/a750035d-0479-34a1-9db2-9a256b53243f

content_type: "text/plain"
data: "[prepare] 2025/02/19 08:17:12 Entrypoint initialization\n\n[hello] hello\n\n"

    References