红帽全球峰会1.3. 监控堆栈中的 TLS 安全性和轮转
了解 TLS 配置集和证书轮转如何在 OpenShift Container Platform 监控堆栈中工作，以保持通信安全。
- 监控组件的 TLS 安全配置集
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监控堆栈的所有组件都使用集群管理员集中配置的 TLS 安全配置集设置。监控堆栈组件使用全局 OpenShift Container Platform
apiservers.config.openshift.io/cluster资源中的tlsSecurityProfile字段中已存在的 TLS 安全配置集设置。 - TLS 证书轮转和自动重启
Cluster Monitoring Operator 管理监控组件的内部 TLS 证书生命周期。这些证书保护监控组件之间的内部通信。
在证书轮转过程中，CMO 会更新 secret 和配置映射，这会触发受影响 pod 的自动重启。这是一个预期的行为，pod 会自动恢复。
以下示例显示了证书轮转过程中发生的事件：
oc get events -n openshift-monitoring LAST SEEN TYPE REASON OBJECT MESSAGE 2h39m Normal SecretUpdated deployment/cluster-monitoring-operator Updated Secret/grpc-tls -n openshift-monitoring because it changed 2h39m Normal SecretCreated deployment/cluster-monitoring-operator Created Secret/prometheus-user-workload-grpc-tls -n openshift-user-workload-monitoring because it was missing 2h39m Normal SecretCreated deployment/cluster-monitoring-operator Created Secret/thanos-querier-grpc-tls -n openshift-monitoring because it was missing 2h39m Normal SecretCreated deployment/cluster-monitoring-operator Created Secret/thanos-ruler-grpc-tls -n openshift-user-workload-monitoring because it was missing 2h39m Normal SecretCreated deployment/cluster-monitoring-operator Created Secret/prometheus-k8s-grpc-tls -n openshift-monitoring because it was missing 2h38m Warning FailedMount pod/prometheus-k8s-0 MountVolume.SetUp failed for volume "secret-grpc-tls" : secret "prometheus-k8s-grpc-tls" not found 2h39m Normal Created pod/prometheus-k8s-0 Created container kube-rbac-proxy-thanos 2h39m Normal Started pod/prometheus-k8s-0 Started container kube-rbac-proxy-thanos 2h39m Normal SuccessfulDelete statefulset/prometheus-k8s delete Pod prometheus-k8s-0 in StatefulSet prometheus-k8s successful 2h39m Normal SuccessfulCreate statefulset/prometheus-k8s create Pod prometheus-k8s-0 in StatefulSet prometheus-k8s successful
$ oc get events -n openshift-monitoring LAST SEEN TYPE REASON OBJECT MESSAGE 2h39m Normal SecretUpdated deployment/cluster-monitoring-operator Updated Secret/grpc-tls -n openshift-monitoring because it changed 2h39m Normal SecretCreated deployment/cluster-monitoring-operator Created Secret/prometheus-user-workload-grpc-tls -n openshift-user-workload-monitoring because it was missing 2h39m Normal SecretCreated deployment/cluster-monitoring-operator Created Secret/thanos-querier-grpc-tls -n openshift-monitoring because it was missing 2h39m Normal SecretCreated deployment/cluster-monitoring-operator Created Secret/thanos-ruler-grpc-tls -n openshift-user-workload-monitoring because it was missing 2h39m Normal SecretCreated deployment/cluster-monitoring-operator Created Secret/prometheus-k8s-grpc-tls -n openshift-monitoring because it was missing 2h38m Warning FailedMount pod/prometheus-k8s-0 MountVolume.SetUp failed for volume "secret-grpc-tls" : secret "prometheus-k8s-grpc-tls" not found 2h39m Normal Created pod/prometheus-k8s-0 Created container kube-rbac-proxy-thanos 2h39m Normal Started pod/prometheus-k8s-0 Started container kube-rbac-proxy-thanos 2h39m Normal SuccessfulDelete statefulset/prometheus-k8s delete Pod prometheus-k8s-0 in StatefulSet prometheus-k8s successful 2h39m Normal SuccessfulCreate statefulset/prometheus-k8s create Pod prometheus-k8s-0 in StatefulSet prometheus-k8s successfulCopy to Clipboard Copied! Toggle word wrap Toggle overflow
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