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kubernetes - Istio Mixer 容器日志导致磁盘空间使用率过高

转载 作者:行者123 更新时间:2023-12-01 14:19:29 25 4
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我有一个支持 Istio 的 EKS 集群,但我的节点经常出现磁盘空间不足的情况。

计算总体磁盘使用情况后,我找到了 istio-mixer 容器,该容器的日志文件仅在 12 天内就使用了超过 50GB 的磁盘空间 正常运行时间:

[root@ip-some-ip containers]# pwd
/var/lib/docker/containers

[root@ip-some-ip containers]# du -schx .[!.]* * | sort -h | tail -n 10
66M 8bf5e8ee5a03096c589ad8f53b9e1a3d3088ca67b0064f3796e406f00336b532
73M 657eca261461d10c5b1b81ab3078d2058b931a357395903808b0145b617c1662
101M bb338296ff06ef42ae6177c8a88e63438c26c398a457dc3f5301ffcb4ef2682b
127M 21f2da86055ad76882730abf65d4465386bb85598f797f451e7ad66726243613
134M 9c2be24e8b9345659b6f208c9f2d4650bb1ece11e0c4b0793aa01fdfebadb44e
383M 5d5fdbe6813ddc3ff2f6eb96f62f8317bd73e24730e2f44ebc537367d9987142
419M 475f8dfc74c3df2bc95c47df56e37d1dfb9181fae9aa783dafabba8283023115
592M 9193c50e586e0c7ecaeb87cecd8be13714a5d6ccd6ea63557c034ef56b07772f
52G 9c6b3e4f26603471d0aa9b6a61b3da5a69001e6b9be34432ffa62d577738c149
54G total

[root@ip-192-168-228-194 containers]# du -hs 9c6b3e4*/*.log
52G 9c6b3e4f26603471d0aa9b6a61b3da5a69001e6b9be34432ffa62d577738c149-json.log

[root@ip-ip-some-ip containers]# docker ps -a | grep 9c6b3e4f2660
9c6b3e4f2660 d559bdcd7a88 "/usr/local/bin/mi..." 12 days ago Up 12 days k8s_mixer_istio-telemetry-6b5579595f-fvm5x_istio-system_6324c262-f3b5-11e8-b615-0eccb0bb4724_0

我的问题是:

  • 这个日志输出量是预期的吗?
  • 混音器日志级别可以降低吗?如何?更改它会影响我的遥测指标吗?
  • 有办法配置日志“保留期”吗?

其他信息:

  • Istio v1.0.2(与官方 Helm 图表一起部署;无自定义配置)
  • k8s v1.10.11-eks
  • 集群有大约 20 个 Pod 在支持 Istio 的命名空间中运行

最佳答案

Mixer 中日志记录级别的默认值为 info。您提供的日志确认您具有此设置。因此,日志中收集了大量冗余信息,并且可以降低某些源的日志记录级别。

您可以通过两种方式更改它:

  1. 在无需重新启动的情况下运行 Pod。

    在您的日志中,您可以找到以下行:

    2018-12-12T17:54:55.461261Z info    ControlZ available at 192.168.87.249:9876

    这意味着,在 9876 端口上的混合器容器中,您可以找到 Istio ControlZ Web 界面。要从安装了 kubectl 的计算机访问它,您需要运行以下命令:

    kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l istio=mixer,istio-mixer-type=telemetry -o jsonpath='{.items[0].metadata.name}') 9876:9876 &

    之后,在浏览器中转到链接 http://localhost:9876/scopez/ ,您将看到以下仪表板,您可以在其中更改日志级别:

    enter image description here

  2. --log_output_level 标志添加到 mixer 容器的 istio-telemetry 部署中。

    以下是混音器文档中对该标志的描述:

    --log_output_level string
    Comma-separated minimum per-scope logging level of messages to output, in the form of :,:,... where scope can be one of [adapters, api, attributes, default, grpcAdapter, loadshedding] and level can be one of [debug, info, warn, error, none] (default "default:info")

    请注意,对于 yaml 文件中的关键 --log_output_level 属性:warn,api:error,您需要使用以下其中一项:

    • - --log_output_level=attributes:warn,api:error
    • - --log_output_level- attribute:warn,api:error 位于不同行

    部署示例:

    apiVersion: extensions/v1beta1
    kind: Deployment
    metadata:
    annotations:
    labels:
    chart: mixer-1.0.4
    istio: mixer
    release: istio
    name: istio-telemetry
    namespace: istio-system
    spec:
    progressDeadlineSeconds: 600
    replicas: 2
    revisionHistoryLimit: 10
    selector:
    matchLabels:
    app: telemetry
    istio: mixer
    istio-mixer-type: telemetry
    strategy:
    rollingUpdate:
    maxSurge: 1
    maxUnavailable: 1
    type: RollingUpdate
    template:
    metadata:
    annotations:
    scheduler.alpha.kubernetes.io/critical-pod: ""
    sidecar.istio.io/inject: "false"
    creationTimestamp: null
    labels:
    app: telemetry
    istio: mixer
    istio-mixer-type: telemetry
    spec:
    containers:
    - args: #Flags for the Mixer process
    - --address #Flag on two different lines
    - unix:///sock/mixer.socket
    - --configStoreURL=k8s:// #Flag with '='
    - --configDefaultNamespace=istio-system
    - --trace_zipkin_url=http://zipkin:9411/api/v1/spans
    - --log_output_level=attributes:warn,api:error # <------ THIS LINE IS WHAT YOU ARE LOOKING FOR
    env:
    - name: GODEBUG
    value: gctrace=2
    image: docker.io/istio/mixer:1.0.4
    imagePullPolicy: IfNotPresent
    livenessProbe:
    failureThreshold: 3
    httpGet:
    path: /version
    port: 9093
    scheme: HTTP
    initialDelaySeconds: 5
    periodSeconds: 5
    successThreshold: 1
    timeoutSeconds: 1
    name: mixer
    ports:
    - containerPort: 9093
    protocol: TCP
    - containerPort: 42422
    protocol: TCP
    resources:
    requests:
    cpu: 10m
    terminationMessagePath: /dev/termination-log
    terminationMessagePolicy: File
    volumeMounts:
    - mountPath: /sock
    name: uds-socket
    - args:
    - proxy
    - --serviceCluster
    - istio-telemetry
    - --templateFile
    - /etc/istio/proxy/envoy_telemetry.yaml.tmpl
    - --controlPlaneAuthPolicy
    - MUTUAL_TLS
    env:
    - name: POD_NAME
    valueFrom:
    fieldRef:
    apiVersion: v1
    fieldPath: metadata.name
    - name: POD_NAMESPACE
    valueFrom:
    fieldRef:
    apiVersion: v1
    fieldPath: metadata.namespace
    - name: INSTANCE_IP
    valueFrom:
    fieldRef:
    apiVersion: v1
    fieldPath: status.podIP
    image: docker.io/istio/proxyv2:1.0.4
    imagePullPolicy: IfNotPresent
    name: istio-proxy
    ports:
    - containerPort: 15090
    name: http-envoy-prom
    protocol: TCP
    resources:
    requests:
    cpu: 10m
    terminationMessagePath: /dev/termination-log
    terminationMessagePolicy: File
    volumeMounts:
    - mountPath: /etc/certs
    name: istio-certs
    readOnly: true
    - mountPath: /sock
    name: uds-socket
    dnsPolicy: ClusterFirst
    restartPolicy: Always
    schedulerName: default-scheduler
    securityContext: {}
    serviceAccount: istio-mixer-service-account
    serviceAccountName: istio-mixer-service-account
    terminationGracePeriodSeconds: 30
    volumes:
    - name: istio-certs
    secret:
    defaultMode: 420
    optional: true
    secretName: istio.istio-mixer-service-account
    - emptyDir: {}
    name: uds-socket

此外,您可以使用以下标志为混合器进程配置日志轮换:

--log_rotate string The path for the optional rotating log file

--log_rotate_max_age int The maximum age in days of a log file beyond which the file is rotated (0 indicates no limit) (default 30)

--log_rotate_max_backups int The maximum number of log file backups to keep before older files are deleted (0 indicates no limit) (default 1000)

--log_rotate_max_size int The maximum size in megabytes of a log file beyond which the file is rotated (default 104857600)

但是,我不可能生成大量此类日志并测试其工作原理。

链接:

不幸的是,official documentation不好,但也许有帮助。

作为奖励,here是所有混音器服务器标志的列表。

关于kubernetes - Istio Mixer 容器日志导致磁盘空间使用率过高,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53725802/

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