Alauda DevOps Pipelines Docs

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Installation of Tekton Results

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

Prerequisites

  1. Tekton Pipelines must be installed in the cluster.

  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"
    • 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

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

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-chains-controller-5467867cdc-xjgfn               1/1     Running   0          14m
tekton-events-controller-65cc86d85c-68wtr               1/1     Running   0          14m
tekton-hub-api-59c9679999-kxc5c                         2/2     Running   0          15m
tekton-operator-proxy-webhook-55bbc8ffcb-7x72l          1/1     Running   0          14m
tekton-pipelines-controller-6fbbc9dd5-xqd9x             1/1     Running   0          14m
tekton-pipelines-remote-resolvers-7bc66f4875-4r7xt      1/1     Running   0          14m
tekton-pipelines-webhook-7d69cf65cf-rj6b9               1/1     Running   0          14m
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
tekton-triggers-controller-6c479dcfb4-wrqrp             1/1     Running   0          14m
tekton-triggers-core-interceptors-764f5bdcb9-b9cdv      1/1     Running   0          14m
tekton-triggers-webhook-59d86db6cf-h2wrf                1/1     Running   0          14m

Verify Functionality

Functionality can be verified through a simple taskrun.

1. Create aTaskRun 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

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