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18.5. 关于 ClusterGroupUpgrade CR

Topology Aware Lifecycle Manager(TALM)为一组集群从 ClusterGroupUpgrade CR 构建补救计划。您可以在 ClusterGroupUpgrade CR 中定义以下规格：

  • 组中的集群
  • 阻塞 ClusterGroupUpgrade CR
  • 适用的受管策略列表
  • 并发更新数
  • 适用的 Canary 更新
  • 更新前和更新之后执行的操作
  • 更新数据

当 TALM 通过对指定集群进行补救时，ClusterGroupUpgrade CR 可以具有以下状态：

  • UpgradeNotStarted
  • UpgradeCannotStart
  • UpgradeNotComplete
  • UpgradeTimedOut
  • UpgradeCompleted
  • PrecachingRequired
注意

当 TALM 完成集群更新后，集群不会在同一 ClusterGroupUpgrade CR 控制下再次更新。在以下情况下，必须创建新的 ClusterGroupUpgrade CR：

  • 当您需要再次更新集群时
  • 当集群在更新后变为与 inform 策略不符合时

18.5.1. UpgradeNotStarted 状态

ClusterGroupUpgrade CR 的初始状态是 UpgradeNotStarted。

TALM 根据以下字段构建补救计划：

  • clusterSelector 字段指定您要更新的集群标签。
  • clusters 字段指定要更新的集群列表。
  • canaries 字段指定集群进行 Canary 更新。
  • maxConcurrency 字段指定批处理中要更新的集群数量。

您可以组合使用 cluster 和 clusterSelector 字段来创建组合的集群列表。

补救计划从 canaries 字段中列出的集群开始。每个 canary 集群组成一个集群批处理。

注意

在更新 canary 集群的过程中任何错误都会停止更新过程。

在成功创建补救计划后，以及 enable 字段被设为 true 后，ClusterGroupUpgrade CR 转变为 UpgradeNotCompleted 状态 。此时，TALM 开始使用特定的受管策略更新不合规的集群。

注意

只有 ClusterGroupUpgrade CR 处于 UpgradeNotStarted 或 UpgradeCannotStart 状态时，才能更改 spec 字段。

UpgradeNotStarted 状态的 ClusterGroupUpgrade CR 示例

apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-upgrade-complete
  namespace: default
spec:
  clusters: 1
  - spoke1
  enable: false
  managedPolicies: 2
  - policy1-common-cluster-version-policy
  - policy2-common-nto-sub-policy
  remediationStrategy: 3
    canaries: 4
      - spoke1
    maxConcurrency: 1 5
    timeout: 240
status: 6
  conditions:
  - message: The ClusterGroupUpgrade CR is not enabled
    reason: UpgradeNotStarted
    status: "False"
    type: Ready
  copiedPolicies:
  - cgu-upgrade-complete-policy1-common-cluster-version-policy
  - cgu-upgrade-complete-policy2-common-nto-sub-policy
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy2-common-nto-sub-policy
    namespace: default
  placementBindings:
  - cgu-upgrade-complete-policy1-common-cluster-version-policy
  - cgu-upgrade-complete-policy2-common-nto-sub-policy
  placementRules:
  - cgu-upgrade-complete-policy1-common-cluster-version-policy
  - cgu-upgrade-complete-policy2-common-nto-sub-policy
  remediationPlan:
  - - spoke1

1
定义要更新的集群列表。
2
列出要修复的用户定义的策略集合。
3
定义集群更新的具体信息。
4
定义可用于 canary 更新的集群。
5
定义批处理中的最大并发更新数。补救批处理数量是 canary 集群的数量，加上除 Canary 集群外的集群数量除以 maxConcurrency 值。已兼容所有受管策略的集群不包括在补救计划中。
6
显示更新状态的信息。

18.5.2. UpgradeCannotStart 状态

在 UpgradeCannotStart 状态下，因为以下原因，更新无法启动：

  • 阻塞系统中缺少的 CR
  • 阻塞还没有完成的 CR

18.5.3. UpgradeNotCompleted 状态

在 UpgradeNotCompleted 状态下，TALM 按照 UpgradeNotStarted 状态中定义的补救计划强制实施策略。

在当前批处理的所有集群与所有受管策略兼容后，对后续批处理的策略强制启动。如果批处理超时，TALM 会进入下一个批处理。批处理的超时值是 spec.timeout 字段除以补救计划中的批处理数量。

注意

受管策略会按照 ClusterGroupUpgrade CR 中的 managedPolicies 字段中列出的顺序进行应用。一个受管策略被应用于指定的集群。在指定的集群符合了当前的策略后，下一个受管策略将应用到下一个不合规的集群。

处于 UpgradeNotCompleted 状态的 ClusterGroupUpgrade CR 示例

apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-upgrade-complete
  namespace: default
spec:
  clusters:
  - spoke1
  enable: true 1
  managedPolicies:
  - policy1-common-cluster-version-policy
  - policy2-common-nto-sub-policy
  remediationStrategy:
    maxConcurrency: 1
    timeout: 240
status: 2
  conditions:
  - message: The ClusterGroupUpgrade CR has upgrade policies that are still non compliant
    reason: UpgradeNotCompleted
    status: "False"
    type: Ready
  copiedPolicies:
  - cgu-upgrade-complete-policy1-common-cluster-version-policy
  - cgu-upgrade-complete-policy2-common-nto-sub-policy
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy2-common-nto-sub-policy
    namespace: default
  placementBindings:
  - cgu-upgrade-complete-policy1-common-cluster-version-policy
  - cgu-upgrade-complete-policy2-common-nto-sub-policy
  placementRules:
  - cgu-upgrade-complete-policy1-common-cluster-version-policy
  - cgu-upgrade-complete-policy2-common-nto-sub-policy
  remediationPlan:
  - - spoke1
  status:
    currentBatch: 1
    remediationPlanForBatch: 3
      spoke1: 0

1
当 spec.enable 字段的值为 true 时，更新会启动。
2
更新开始时，status 字段会相应变化。
3
列出批处理中的集群，以及当前应用于每个集群的策略的索引。策略的索引以 0 开头，索引遵循 status.managedPoliciesForUpgrade 列表的顺序。

18.5.4. UpgradeTimedOut 状态

在 UpgradeTimedOut 状态下，TALM 会每小时检查 ClusterGroupUpgrade CR 的所有策略是否合规。检查会一直进行，直到 ClusterGroupUpgrade CR 被删除或更新已完成。如果由于网络、CPU 或其他问题导致更新会延长，则定期检查允许更新完成。

在两个情况下，TALM 过渡到 UpgradeTimedOut 状态：

  • 在当前批处理包含 Canary 更新时，批处理中的集群不会遵循批处理超时中的所有受管策略。
  • 当集群不遵循 remediationStrategy 字段指定的 timeout 值中的受管策略时。

如果策略合规，TALM 会转换为 UpgradeCompleted 状态。

18.5.5. UpgradeCompleted 状态

在 UpgradeCompleted 状态中，集群更新已完成。

UpgradeCompleted 状态的 ClusterGroupUpgrade CR 示例

apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-upgrade-complete
  namespace: default
spec:
  actions:
    afterCompletion:
      deleteObjects: true 1
  clusters:
  - spoke1
  enable: true
  managedPolicies:
  - policy1-common-cluster-version-policy
  - policy2-common-nto-sub-policy
  remediationStrategy:
    maxConcurrency: 1
    timeout: 240
status: 2
  conditions:
  - message: The ClusterGroupUpgrade CR has all clusters compliant with all the managed policies
    reason: UpgradeCompleted
    status: "True"
    type: Ready
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy2-common-nto-sub-policy
    namespace: default
  remediationPlan:
  - - spoke1
  status:
    remediationPlanForBatch:
      spoke1: -2 3

1
默认情况下，spec.action.afterCompletion.deleteObjects 字段的值为 true。更新完成后，TALM 删除更新期间创建的底层 RHACM 对象。这个选项是防止 RHACM hub 在成功更新后持续检查合规性。
2
status 字段显示更新成功完成。
3
显示所有策略都应用到集群。
<discreet><title>PrecachingRequired 状态</title>

在 PrecachingRequired 状态中，集群需要预先缓存的镜像，然后才能启动更新。有关预缓存功能的更多信息，请参阅"使用容器镜像预缓存功能"部分。

</discreet>

18.5.6. 阻塞 ClusterGroupUpgrade CR

您可以创建多个 ClusterGroupUpgrade CR，并控制应用程序的顺序。

例如，如果您创建了 ClusterGroupUpgrade CR C，它会阻塞 ClusterGroupUpgrade CR A 的启动，那么 ClusterGroupUpgrade CR A 将无法启动，直到 ClusterGroupUpgrade CR C 变为 UpgradeComplete 状态。

一个 ClusterGroupUpgrade CR 可以有多个阻塞 CR。在这种情况下，所有块 CR 都必须在升级当前 CR 升级前完成。

先决条件

  • 安装 Topology Aware Lifecycle Manager(TALM)。
  • 置备一个或多个受管集群。
  • 以具有 cluster-admin 特权的用户身份登录。
  • 在 hub 集群中创建 RHACM 策略。

流程

  1. 将 ClusterGroupUpgrade CR 的内容保存到 cgu-a.yaml、cgu-b.yaml 和 cgu-c.yaml 文件中。 

    apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-a
  namespace: default
spec:
  blockingCRs: 1
  - name: cgu-c
    namespace: default
  clusters:
  - spoke1
  - spoke2
  - spoke3
  enable: false
  managedPolicies:
  - policy1-common-cluster-version-policy
  - policy2-common-pao-sub-policy
  - policy3-common-ptp-sub-policy
  remediationStrategy:
    canaries:
    - spoke1
    maxConcurrency: 2
    timeout: 240
status:
  conditions:
  - message: The ClusterGroupUpgrade CR is not enabled
    reason: UpgradeNotStarted
    status: "False"
    type: Ready
  copiedPolicies:
  - cgu-a-policy1-common-cluster-version-policy
  - cgu-a-policy2-common-pao-sub-policy
  - cgu-a-policy3-common-ptp-sub-policy
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy2-common-pao-sub-policy
    namespace: default
  - name: policy3-common-ptp-sub-policy
    namespace: default
  placementBindings:
  - cgu-a-policy1-common-cluster-version-policy
  - cgu-a-policy2-common-pao-sub-policy
  - cgu-a-policy3-common-ptp-sub-policy
  placementRules:
  - cgu-a-policy1-common-cluster-version-policy
  - cgu-a-policy2-common-pao-sub-policy
  - cgu-a-policy3-common-ptp-sub-policy
  remediationPlan:
  - - spoke1
  - - spoke2
    1
    定义阻塞 CR。cgu-a 更新无法启动，直到 cgu-c 完成后。 
    apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-b
  namespace: default
spec:
  blockingCRs: 1
  - name: cgu-a
    namespace: default
  clusters:
  - spoke4
  - spoke5
  enable: false
  managedPolicies:
  - policy1-common-cluster-version-policy
  - policy2-common-pao-sub-policy
  - policy3-common-ptp-sub-policy
  - policy4-common-sriov-sub-policy
  remediationStrategy:
    maxConcurrency: 1
    timeout: 240
status:
  conditions:
  - message: The ClusterGroupUpgrade CR is not enabled
    reason: UpgradeNotStarted
    status: "False"
    type: Ready
  copiedPolicies:
  - cgu-b-policy1-common-cluster-version-policy
  - cgu-b-policy2-common-pao-sub-policy
  - cgu-b-policy3-common-ptp-sub-policy
  - cgu-b-policy4-common-sriov-sub-policy
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy2-common-pao-sub-policy
    namespace: default
  - name: policy3-common-ptp-sub-policy
    namespace: default
  - name: policy4-common-sriov-sub-policy
    namespace: default
  placementBindings:
  - cgu-b-policy1-common-cluster-version-policy
  - cgu-b-policy2-common-pao-sub-policy
  - cgu-b-policy3-common-ptp-sub-policy
  - cgu-b-policy4-common-sriov-sub-policy
  placementRules:
  - cgu-b-policy1-common-cluster-version-policy
  - cgu-b-policy2-common-pao-sub-policy
  - cgu-b-policy3-common-ptp-sub-policy
  - cgu-b-policy4-common-sriov-sub-policy
  remediationPlan:
  - - spoke4
  - - spoke5
  status: {}
    1
    cgu-b 更新无法启动，直到 cgu-a 完成后。 
    apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-c
  namespace: default
spec: 1
  clusters:
  - spoke6
  enable: false
  managedPolicies:
  - policy1-common-cluster-version-policy
  - policy2-common-pao-sub-policy
  - policy3-common-ptp-sub-policy
  - policy4-common-sriov-sub-policy
  remediationStrategy:
    maxConcurrency: 1
    timeout: 240
status:
  conditions:
  - message: The ClusterGroupUpgrade CR is not enabled
    reason: UpgradeNotStarted
    status: "False"
    type: Ready
  copiedPolicies:
  - cgu-c-policy1-common-cluster-version-policy
  - cgu-c-policy4-common-sriov-sub-policy
  managedPoliciesCompliantBeforeUpgrade:
  - policy2-common-pao-sub-policy
  - policy3-common-ptp-sub-policy
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy4-common-sriov-sub-policy
    namespace: default
  placementBindings:
  - cgu-c-policy1-common-cluster-version-policy
  - cgu-c-policy4-common-sriov-sub-policy
  placementRules:
  - cgu-c-policy1-common-cluster-version-policy
  - cgu-c-policy4-common-sriov-sub-policy
  remediationPlan:
  - - spoke6
  status: {}
    1
    cgu-c 更新没有任何阻塞 CR。当 enable 字段设为 true 时，TALM 会启动 cgu-c 更新。

  2. 通过为每个相关 CR 运行以下命令创建 ClusterGroupUpgrade CR： 

    $ oc apply -f <name>.yaml

  3. 通过为每个相关 CR 运行以下命令启动更新过程： 

    $ oc --namespace=default patch clustergroupupgrade.ran.openshift.io/<name> \
--type merge -p '{"spec":{"enable":true}}'

    以下示例显示 enable 字段设为 true 的 ClusterGroupUpgrade CR：

    带有阻塞 CR 的 cgu-a 示例

    apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-a
  namespace: default
spec:
  blockingCRs:
  - name: cgu-c
    namespace: default
  clusters:
  - spoke1
  - spoke2
  - spoke3
  enable: true
  managedPolicies:
  - policy1-common-cluster-version-policy
  - policy2-common-pao-sub-policy
  - policy3-common-ptp-sub-policy
  remediationStrategy:
    canaries:
    - spoke1
    maxConcurrency: 2
    timeout: 240
status:
  conditions:
  - message: 'The ClusterGroupUpgrade CR is blocked by other CRs that have not yet
      completed: [cgu-c]' 1
    reason: UpgradeCannotStart
    status: "False"
    type: Ready
  copiedPolicies:
  - cgu-a-policy1-common-cluster-version-policy
  - cgu-a-policy2-common-pao-sub-policy
  - cgu-a-policy3-common-ptp-sub-policy
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy2-common-pao-sub-policy
    namespace: default
  - name: policy3-common-ptp-sub-policy
    namespace: default
  placementBindings:
  - cgu-a-policy1-common-cluster-version-policy
  - cgu-a-policy2-common-pao-sub-policy
  - cgu-a-policy3-common-ptp-sub-policy
  placementRules:
  - cgu-a-policy1-common-cluster-version-policy
  - cgu-a-policy2-common-pao-sub-policy
  - cgu-a-policy3-common-ptp-sub-policy
  remediationPlan:
  - - spoke1
  - - spoke2
  status: {}

    1
    显示阻塞 CR 的列表。

    带有阻塞 CR 的 cgu-b 示例

    apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-b
  namespace: default
spec:
  blockingCRs:
  - name: cgu-a
    namespace: default
  clusters:
  - spoke4
  - spoke5
  enable: true
  managedPolicies:
  - policy1-common-cluster-version-policy
  - policy2-common-pao-sub-policy
  - policy3-common-ptp-sub-policy
  - policy4-common-sriov-sub-policy
  remediationStrategy:
    maxConcurrency: 1
    timeout: 240
status:
  conditions:
  - message: 'The ClusterGroupUpgrade CR is blocked by other CRs that have not yet
      completed: [cgu-a]' 1
    reason: UpgradeCannotStart
    status: "False"
    type: Ready
  copiedPolicies:
  - cgu-b-policy1-common-cluster-version-policy
  - cgu-b-policy2-common-pao-sub-policy
  - cgu-b-policy3-common-ptp-sub-policy
  - cgu-b-policy4-common-sriov-sub-policy
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy2-common-pao-sub-policy
    namespace: default
  - name: policy3-common-ptp-sub-policy
    namespace: default
  - name: policy4-common-sriov-sub-policy
    namespace: default
  placementBindings:
  - cgu-b-policy1-common-cluster-version-policy
  - cgu-b-policy2-common-pao-sub-policy
  - cgu-b-policy3-common-ptp-sub-policy
  - cgu-b-policy4-common-sriov-sub-policy
  placementRules:
  - cgu-b-policy1-common-cluster-version-policy
  - cgu-b-policy2-common-pao-sub-policy
  - cgu-b-policy3-common-ptp-sub-policy
  - cgu-b-policy4-common-sriov-sub-policy
  remediationPlan:
  - - spoke4
  - - spoke5
  status: {}

    1
    显示阻塞 CR 的列表。

    带有阻塞 CR 的 cgu-c 示例

    apiVersion: ran.openshift.io/v1alpha1
kind: ClusterGroupUpgrade
metadata:
  name: cgu-c
  namespace: default
spec:
  clusters:
  - spoke6
  enable: true
  managedPolicies:
  - policy1-common-cluster-version-policy
  - policy2-common-pao-sub-policy
  - policy3-common-ptp-sub-policy
  - policy4-common-sriov-sub-policy
  remediationStrategy:
    maxConcurrency: 1
    timeout: 240
status:
  conditions:
  - message: The ClusterGroupUpgrade CR has upgrade policies that are still non compliant 1
    reason: UpgradeNotCompleted
    status: "False"
    type: Ready
  copiedPolicies:
  - cgu-c-policy1-common-cluster-version-policy
  - cgu-c-policy4-common-sriov-sub-policy
  managedPoliciesCompliantBeforeUpgrade:
  - policy2-common-pao-sub-policy
  - policy3-common-ptp-sub-policy
  managedPoliciesForUpgrade:
  - name: policy1-common-cluster-version-policy
    namespace: default
  - name: policy4-common-sriov-sub-policy
    namespace: default
  placementBindings:
  - cgu-c-policy1-common-cluster-version-policy
  - cgu-c-policy4-common-sriov-sub-policy
  placementRules:
  - cgu-c-policy1-common-cluster-version-policy
  - cgu-c-policy4-common-sriov-sub-policy
  remediationPlan:
  - - spoke6
  status:
    currentBatch: 1
    remediationPlanForBatch:
      spoke6: 0

    1
    cgu-c 更新没有任何阻塞 CR。
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