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Code Changes for Updates📜

Jaeger is a modified/customized version of an upstream chart. The below details the steps required to update to a new version of the Jaeger package.

  1. Navigate to the upstream chart repo and folder and find the tag that corresponds with the new chart version for this image update.

    • For example, if updating the Jaeger images to 1.28 you would check the chart values and switch Gitlab tags until you find the latest chart version that uses 1.28 images. In this case that is jaeger-operator-2.27.0 (as of this doc construction).

  2. Checkout the renovate/ironbank branch. This branch will already have the updates you need for the images.

  3. From the root of the repo run kpt pkg update chart@jaeger-operator-<tag> --strategy alpha-git-patch replacing <tag> with the version tag you got in step 1.

    • You may be prompted to resolve some conflicts - choose what makes sense (if there are BB additions/changes keep them, if there are upstream additions/changes keep them).
    • Follow the Modifications made to upstream chart section of this document for a list of changes per file to be aware of, for how Big Bang differs from upstream.

  4. Modify the version in Chart.yaml - you will want to append -bb.0 to the chart version from upstream. update dependencies to latest BB gluon library version. 

    helm dependency update ./chart

  5. Update CHANGELOG.md adding an entry for the new version and noting all changes (at minimum should include - Updated Jaeger to x.x.x).

  6. Generate the README.md updates by following the guide in gluon.

  7. Push up your changes, add upgrade notices if applicable, validate that CI passes.

    • If there are any failures, follow the information in the pipeline to make the necessary updates.
    • Add the debug label to the MR for more detailed information.
    • Reach out to the CODEOWNERS if needed.

  8. As part of your MR that modifies bigbang packages, you should modify the bigbang bigbang/tests/test-values.yaml against your branch for the CI/CD MR testing by enabling your packages.

    • To do this, at a minimum, you will need to follow the instructions at bigbang/docs/developer/test-package-against-bb.md with changes for Jaeger enabled (the below is a reference, actual changes could be more depending on what changes where made to Jaeger in the pakcage MR).

test-values.yaml📜

```yaml
jaeger:
  enabled: true
  git:
    tag: null
    branch: <my-package-branch-that-needs-testing>
  values:
    istio:
      hardened:
        enabled: true
  ### Additional compononents of Jaeger should be changed to reflect testing changes introduced in the package MR
```
  1. Perform the steps below for manual testing. CI provides a good set of basic smoke tests but it is beneficial to run some additional checks.

Manual Testing for Updates📜

NOTE: For these testing steps it is good to do them on both a clean install and an upgrade. For clean install, point jaeger to your branch. For an upgrade do an install with jaeger pointing to the latest tag, then perform a helm upgrade with jaeger pointing to your branch.

You will want to install with: - Jaeger, Logging (elastic, eck operator, and fluentbit), Kiali, Authservice, Monitoring and Istio packages enabled - Tempo disabled - Dev SSO values for Kiali, Monitoring, and Jaeger

overrides/jaeger.yaml 

flux:
  interval: 1m
  rollback:
    cleanupOnFail: false

istioOperator:
  enabled: true

istio:
  enabled: true

elasticsearchKibana:
  enabled: true

eckOperator:
  enabled: true

fluentbit:
  enabled: true

monitoring:
  enabled: true
  sso:
    enabled: true
    prometheus:
      client_id: platform1_a8604cc9-f5e9-4656-802d-d05624370245_bb8-prometheus
    alertmanager:
      client_id: platform1_a8604cc9-f5e9-4656-802d-d05624370245_bb8-alertmanager

jaeger:
  enabled: true
  git:
    tag: null
    branch: "renovate/ironbank"
  sso:
    enabled: true
    client_id: platform1_a8604cc9-f5e9-4656-802d-d05624370245_bb8-jaeger

kiali:
  enabled: true
  sso:
    enabled: true
    client_id: platform1_a8604cc9-f5e9-4656-802d-d05624370245_bb8-kiali

tempo:
  enabled: false

addons:
  authservice:
    enabled: true

Testing Steps: - Login with SSO to Jaeger (if you are not prompted for an SSO login, this could indicate a problem with the authservice connection) - On the search fields on the left pick a service and click find traces. - Validate that traces load. - Navigate to Kiali and login with SSO - Under applications find the namespace and service that corresponds with the service you picked in Jaeger earlier. - Validate that traces show under the traces tab. - Navigate to Prometheus - Validate that the Jaeger operator targets show as UP.

When in doubt with any testing or upgrade steps ask one of the CODEOWNERS for assistance.

Modifications made to upstream chart📜

This is a high-level list of modifications that Big Bang has made to the upstream helm chart. You can use this as as cross-check to make sure that no modifications were lost during the upgrade process.

chart/templates/bigbang📜

  • Files added to support networkPolicies, cert generation, monitoring, mTLS enforcement, VirtualService, etc

chart/Chart.yaml📜

  • Chart renamed jaeger
  • Append -bb.x versioning to version
  • Add gluon dependency chart for helm tests (also run helm dependency update ./chart to store this): 
    dependencies:
- name: gluon
    version: 0.3.1
    repository: oci://registry.dso.mil/platform-one/big-bang/apps/library-charts/gluon
  • Add bigbang dev annotation for release automation: 
    annotations:
  bigbang.dev/applicationVersions: |
    - Jaeger: 1.34.1

chart/templates/_helpers.tpl📜

  • Line 49-54 Added selector label template to support upgrades 
    name: {{ include "jaeger-operator.fullname" . }}
{{- end }}

{{/* Generate selector labels -- see issue #512.  This allows helm upgrades to happen */}}
{{- define "jaeger-operator.selector.labels" }}
app.kubernetes.io/name: {{ include "jaeger-operator.name" . }}

chart/templates/deployment.yaml📜

  • Line 13-15 Upgrade strategy added below spec.replicas: 
    {{- if .Values.operatorUpdateStrategy }}
strategy:
  {{- toYaml .Values.operatorUpdateStrategy | nindent 4 }}
  • Line 19 
    {{ include "jaeger-operator.selector.labels" . | nindent 6 }}
  • Updated templating to include tpl for metadata.labels and spec.template.metadata.labels, line 9 and 26 
    {{ tpl (. | toYaml | indent 4) $ }}
  • Line 28-31 Annotations values added below extraLabels: 
    {{- if .Values.annotations }}
annotations:
  {{ toYaml .Values.annotations | nindent 8 }}
{{- end }}
  • LIne 56-59 spec.template.spec.containers added securityContext 
    securityContext:
capabilities:
    drop:
    - ALL
  • Line 62 Changed ports: name: metrics to http-metrics

chart/templates/jaeger.yaml📜

  • Changed name to jaeger
  • Refactored to support certain parts of the spec rather than a simple toYaml (should we re-evaluate this?)
  • added {{- if .Values.elasticsearch.enabled }} code block Line 9-46 
      serviceAccount: {{ include "jaeger-operator.serviceAccountName" $ }}
  strategy: {{ .strategy }}
  ingress:
{{ toYaml .ingress | indent 4 }}
  annotations:
{{ toYaml .annotations | indent 4 }}
  labels:
{{ toYaml .labels | indent 4 }}
  query:
{{ toYaml .query | indent 4 }}
  allInOne:
{{ toYaml .allInOne | indent 4 }}
  collector:
{{ toYaml .collector | indent 4 }}
{{- end }}
{{- if .Values.elasticsearch.enabled  }}
  storage:
    type: elasticsearch
    {{- if .Values.elasticsearch.storage.options.es }}
    options:
      es:
        {{- tpl (toYaml .Values.elasticsearch.storage.options.es) . | nindent 8 }}
    {{- end }}
    esIndexCleaner:
      image: {{ .Values.retention.image }}
      schedule: {{ .Values.retention.schedule }}
      numberOfDays: {{ .Values.retention.days }}
      enabled: {{ .Values.retention.enabled }}
    secretName: jaeger-secret
  volumeMounts:
    - name: certificates
      mountPath: /es/certificates/
      readOnly: true
  volumes:
    - name: certificates
      secret:
        secretName: elasticsearch-certificates
{{ end }}

chart/templates/psp.yaml📜

  • Line 36-42 added spec.securityContext code block 
      securityContext:
    runAsNonRoot: true
    runAsUser: 1001
    runAsGroup: 1001
    capabilities:
      drop:
        - ALL

chart/templates/role.yaml📜

  • Line 228 add ingressclasses to apiGroups.resources: 
    - apiGroups:
  - networking.k8s.io
  resources:
  - ingresses
  - ingressclasses

chart/templates/service.yaml📜

  • Line 17 Changed spec.ports -name: metrics to http-metrics

chart/templates/tests📜

  • Gluon cypress test template added

chart/tests📜

  • Cypress config and test added

chart/values.yaml📜

  • Substantial values additions/changes to use IB images, support BB core interactions, etc
  • When in doubt ask about these changes
  • default nameOverride added and set to original chart name jaeger-operator

Line 5-6 Chart nameOverride 

# -- Chart name override
nameOverride: jaeger-operator

Line 9-11 set openshift 

# -- Openshift toggle, only affects networkPolicies
openshift:
  enabled: false

Line 13-15 set sso 

# -- SSO toggle, only affects auth policies
sso:
  enabled: false

Line 17-22 set monitoring 

# -- Monitoring toggle, affects servicemonitor and networkPolicies
monitoring:
  enabled: false
  serviceMonitor:
    scheme: ""
    tlsConfig: {}

Line 24-80 set istio 

# -- Domain to service Jaeger virtualService
domain: bigbang.dev

istio:
  # -- Toggle istio integration
  enabled: false
  hardened:
    enabled: false
    outboundTrafficPolicyMode: "REGISTRY_ONLY"
    customServiceEntries: []
      # - name: "allow-google"
      #   enabled: true
      #   spec:
      #     hosts:
      #       - "www.google.com"
      #       - "google.com"
      #     location: MESH_EXTERNAL
      #     ports:
      #       - number: 443
      #         protocol: TLS
      #         name: https
      #     resolution: DNS
    customAuthorizationPolicies: []
    # - name: "allow-nothing"
    #   enabled: true
    #   spec: {}
    prometheus:
      enabled: true
      namespaces:
        - monitoring
      principals:
        - cluster.local/ns/monitoring/sa/monitoring-grafana
        - cluster.local/ns/monitoring/sa/monitoring-monitoring-kube-alertmanager
        - cluster.local/ns/monitoring/sa/monitoring-monitoring-kube-operator
        - cluster.local/ns/monitoring/sa/monitoring-monitoring-kube-prometheus
        - cluster.local/ns/monitoring/sa/monitoring-monitoring-kube-state-metrics
        - cluster.local/ns/monitoring/sa/monitoring-monitoring-prometheus-node-exporter
    tempo:
      enabled: false
      namespaces:
      - tempo
      principals:
      - cluster.local/ns/tempo/sa/tempo-tempo
  jaeger:
    # -- Toggle vs creation
    enabled: true
    annotations: {}
    labels: {}
    gateways:
      - istio-system/main
    hosts:
      - tracing.{{ .Values.domain }}
  # -- Default jaeger peer authentication
  mtls:
    # -- STRICT = Allow only mutual TLS traffic,
    # PERMISSIVE = Allow both plain text and mutual TLS traffic
    mode: STRICT

Line 82-88 set cleanSvcMonitor 

# -- Only needed for upgrade from pre-1.29.x,
# Deletes the servicemonitor that targetted deprecated metrics endpoints
cleanSvcMonitor:
  enabled: false
  image:
    repository: registry1.dso.mil/ironbank/big-bang/base
    tag: 2.1.0

Line 90-121 set webhookCertGen 

# -- Job to generate and patch webhooks with certificate
webhookCertGen:
  # -- If disabled must use cert manager and manually patch webhook
  enabled: true
  image:
    repository: registry1.dso.mil/ironbank/opensource/ingress-nginx/kube-webhook-certgen
    tag: v1.3.0
    pullPolicy: IfNotPresent
  resources:
    limits:
      cpu: 50m
      memory: 50Mi
    requests:
      cpu: 50m
      memory: 50Mi
  cleanupProxy:
    image:
      repository: registry1.dso.mil/ironbank/big-bang/base
      tag: 2.1.0
      pullPolicy: IfNotPresent
  nodeSelector: {}
  affinity: {}
  tolerations: {}
  securityContext:
    runAsNonRoot: true
    runAsUser: 65532
    runAsGroup: 65532
  # Adds securityContext to webhookCertJob containers
  containerSecurityContext:
    capabilities:
      drop:
        - ALL

Line 123-159 set elasticsearch 

elasticsearch:
  enabled: false
  # -- Custom BB job to create required index templates for ES 8.x
  indexTemplateCreation:
    enabled: true
    image:
      repository: registry1.dso.mil/ironbank/big-bang/base
      tag: 2.1.0
    # -- Priority to add to the service index template, cannot conflict with existing templates
    servicePriority: 10
    # -- Priority to add to the span index template, cannot conflict with existing templates
    spanPriority: 11
    # Adds securityContext for job jaeger-es-index-template
    securityContext:
      runAsNonRoot: true
      runAsUser: 1001
      runAsGroup: 1001
    # Adds containerSecurityContext for job jaeger-es-index-template
    containerSecurityContext:
      capabilities:
        drop:
          - ALL
  username: elastic
  name: logging-ek
  namespace: logging
  # password:
  storage:
    options:
      # A complete list of Jaeger-ElasticSearch options is available here: https://github.com/jaegertracing/documentation/blob/master/data/cli/1.28/jaeger-query-elasticsearch.yaml
      es:
        server-urls: "https://{{ $.Values.elasticsearch.name }}-es-http.{{ $.Values.elasticsearch.namespace }}.svc:9200"
        tls:
          enabled: "true"
          ca: /es/certificates/ca.crt
        # Overrides to support ES 8
        version: 7
        create-index-templates: false

Line 161-165 set the retention 

retention:
  enabled: false
  schedule: "0 * * * *"
  days: 5
  image: registry1.dso.mil/ironbank/opensource/jaegertracing/jaeger-es-index-cleaner:1.57.0

Line 167-169 Set the operatorUpdateStrategy 

# This section will be used to configure the operator upgrade strategy in the deployment.yaml
operatorUpdateStrategy:
  type: RollingUpdate

Line 171-176 set the repository to registry1.dso.mil/ironbank 

image:
  repository: registry1.dso.mil/ironbank/opensource/jaegertracing/jaeger-operator
  tag: 1.57.0
  pullPolicy: Always
  imagePullSecrets:
    - private-registry

line 178-185 ensure that certs.issuer.create and certs.certificate.create is set to true. Set certs.certificate.secretName to jaeger-operator-webhook-cert 

certs:
  issuer:
    create: false
    name: ""
  certificate:
    create: false
    namespace: ""
    secretName: "jaeger-operator-webhook-cert"

Line 204 set jaeger.create to true 

jaeger:
  # Specifies whether Jaeger instance should be created
  create: true

Line 207-319 set jaeger.spec 

  spec:
    # allInOne for dev purposes
    # production for HA setup
    strategy: allInOne
    # Disable ingress by default in favor of istio
    ingress:
      enabled: false
    annotations: {}
    labels: {}
    allInOne:
      image: registry1.dso.mil/ironbank/opensource/jaegertracing/all-in-one:1.57.0
      options:
        log-level: info
        collector:
          zipkin:
            host-port: ":9411"
      annotations:
        sidecar.istio.io/inject: "true"
        traffic.sidecar.istio.io/includeInboundPorts: "16686"
      resources:
        requests:
          cpu: 200m
          memory: 128Mi
        limits:
          cpu: 200m
          memory: 128Mi
      securityContext:
        runAsNonRoot: true
        runAsUser: 1001
        runAsGroup: 1001
      containerSecurityContext:
        capabilities:
          drop:
            - ALL
      strategy:
        type: RollingUpdate
    agent:
      maxReplicas: 5
      image: registry1.dso.mil/ironbank/opensource/jaegertracing/jaeger-agent:1.57.0
      options:
        log-level: info
      imagePullSecrets:
        - private-registry
      securityContext:
        runAsNonRoot: true
        runAsUser: 1001
        runAsGroup: 1001
      containerSecurityContext:
        capabilities:
          drop:
            - ALL
      strategy:
        type: RollingUpdate
    ingester:
      maxReplicas: 5
      image: registry1.dso.mil/ironbank/opensource/jaegertracing/jaeger-ingester:1.57.0
      options:
        log-level: info
      securityContext:
        runAsNonRoot: true
        runAsUser: 1001
        runAsGroup: 1001
      containerSecurityContext:
        capabilities:
          drop:
            - ALL
      strategy:
        type: RollingUpdate
    query:
      replicas: 5
      image: registry1.dso.mil/ironbank/opensource/jaegertracing/jaeger-query:1.57.0
      options:
        log-level: info
      securityContext:
        runAsNonRoot: true
        runAsUser: 1001
        runAsGroup: 1001
      containerSecurityContext:
        capabilities:
          drop:
            - ALL
      strategy:
        type: RollingUpdate
    collector:
      maxReplicas: 5
      image: registry1.dso.mil/ironbank/opensource/jaegertracing/jaeger-collector:1.57.0
      options:
        log-level: info
      resources:
        requests:
          cpu: 200m
          memory: 128Mi
        limits:
          cpu: 200m
          memory: 128Mi
      securityContext:
        runAsNonRoot: true
        runAsUser: 1001
        runAsGroup: 1001
      containerSecurityContext:
        capabilities:
          drop:
            - ALL
      strategy:
        type: RollingUpdate
    volumeMounts:
      - name: certificates
        mountPath: /es/certificates/
        readOnly: true
    volumes:
      - name: certificates
        secret:
          secretName: elasticsearch-certificates

Line 321-325 set rbac.clusterRole to true 

rbac:
  # Specifies whether RBAC resources should be created
  create: true
  pspEnabled: false
  clusterRole: true

Line 334-339 set serviceAccount.name to jaeger-instance 

serviceAccount:
  # Specifies whether a ServiceAccount should be created
  create: true
  # The name of the ServiceAccount to use.
  # If not set and create is true, a name is generated using the fullname template
  name: jaeger-instance
  # Annotations for serviceAccount
  annotations: {}

Line 364-370 set resources 

resources:
  limits:
    cpu: 100m
    memory: 128Mi
  requests:
    cpu: 100m
    memory: 128Mi

Line 380-383 set securityContext 

securityContext:
  runAsNonRoot: true
  runAsUser: 1001
  runAsGroup: 1001

Line 394-413 set annotations, networkPolicies, bbtests, values 

# additional BB additions
annotations:
  {}
  # bigbang.dev/istioVersion: 1.10.3

networkPolicies:
  enabled: false
  ingressLabels:
    app: istio-ingressgateway
    istio: ingressgateway
  # See `kubectl cluster-info` and then resolve to IP
  controlPlaneCidr: 0.0.0.0/0
  additionalPolicies: []

bbtests:
  enabled: false
  cypress:
    artifacts: true
    envs:
      cypress_url: "http://jaeger-query:16686"

automountServiceAccountToken📜

The mutating Kyverno policy named update-automountserviceaccounttokens is leveraged to harden all ServiceAccounts in this package with automountServiceAccountToken: false. This policy is configured by namespace in the Big Bang umbrella chart repository at chart/templates/kyverno-policies/values.yaml.

This policy revokes access to the K8s API for Pods utilizing said ServiceAccounts. If a Pod truly requires access to the K8s API (for app functionality), the Pod is added to the pods: array of the same mutating policy. This grants the Pod access to the API, and creates a Kyverno PolicyException to prevent an alert.

Last update: 2024-08-13 by Jimmy Ungerman