Kubernetes 日志错误的严重性

huangapple
go评论70阅读模式
英文:

Kubernetes Logging Wrong Severity

问题

我在k8的pod中部署了一个Python进程。这个进程使用一个简单的记录器：

    import sys
    import logging
    import logging.handlers
    from pathlib import Path
    import coloredlogs
    from app.core.config import settings 
    CONFIG_PATH = Path.joinpath(BASE_PATH, '.configrc') 
   
    LOG_FORMAT = f'%(asctime)s.[{settings.APP_NAME}] %(levelname)s %(message)s'
    LOG_LEVEL = settings.dict().get('LOG_LEVEL', logging.INFO)
    LOGGER = logging.getLogger(__name__)
    
    coloredlogs.install(
        level=LOG_LEVEL,
        fmt=LOG_FORMAT,
        logger=LOGGER) 

    LOGGER.info("INFO Creating main objects...")

然而，当我检查k8的日志时，它总是抱怨这些日志是错误的：

    ERROR 2023-06-01T13:54:37.742688222Z [resource.labels.containerName: myapp] 2023-06-01 15:54:37.[myapp] INFO Creating main objects...
   
    {
    insertId: "8xj2l2hwts2f45gt"
    labels: {4}
    logName: "projects/proj-iot-poc/logs/stderr"
    receiveTimestamp: "2023-06-01T13:54:38.596712564Z"
    resource: {2}
    severity: "ERROR"
    textPayload: "2023-06-01 15:54:37.[myapp] INFO Creating main objects..."
    timestamp: "2023-06-01T13:54:37.742688222Z"
    }

不值一提的是，我只使用了 LOGGER.info("Creating main objects...") 并且我期望日志只是一个信息而不是错误。

清单如下：

apiVersion: apps/v1
kind: Deployment
metadata:
  annotations:
    deployment.kubernetes.io/revision: "11"
    kubectl.kubernetes.io/last-applied-configuration: |
            {"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{},"labels":{"name":"myapp"},"name":"myapp","namespace":"default"},"spec":{"replicas":1,"selector":{"matchLabels":{"app":"myapp"}},"strategy":{"type":"Recreate"},"template":{"metadata":{"labels":{"app":"myapp","version":"1.6.1rc253"}},"spec":{"containers":[{"env":[{"name":"COMMON_CONFIG_COMMIT_ID","value":"1b2e6669140391d680ff0ca34811ddc2553f15f7"},{"name":"OWN_CONFIG_COMMIT_ID","value":"52a142ca003ade39a0fd96faffbe5334facc3463"}],"envFrom":[{"configMapRef":{"name":"myapp-config"}}],"image":"europe-west1-docker.pkg.dev/mycluster/docker-main/myapp:1.6.1rc253","lifecycle":{"preStop":{"exec":{"command":["/bin/bash","-c","sleep 5"]}}},"name":"myapp","resources":null}],"restartPolicy":"Always"}}}}}
  creationTimestamp: "2023-05-26T07:49:37Z"
  generation: 13
  labels:
    name: myapp
  managedFields:
  - apiVersion: apps/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:metadata:
        f:annotations:
          .: {}
          f:kubectl.kubernetes.io/last-applied-configuration: {}
        f:labels:
          .: {}
          f:name: {}
      f:spec:
        f:progressDeadlineSeconds: {}
        f:revisionHistoryLimit: {}
        f:selector: {}
        f:strategy:
          f:type: {}
        f:template:
          f:metadata:
            f:labels:
              .: {}
              f:app: {}
              f:version: {}
          f:spec:
            f:containers:
              k:{"name":"myapp"}:
                .: {}
                f:env:
                  .: {}
                  k:{"name":"COMMON_CONFIG_COMMIT_ID"}:
                    .: {}
                    f:name: {}
                    f:value: {}
                  k:{"name":"OWN_CONFIG_COMMIT_ID"}:
                    .: {}
                    f:name: {}
                    f:value: {}
                f:envFrom: {}
                f:image: {}
                f:imagePullPolicy: {}
                f:lifecycle:
                  .: {}
                  f:preStop:
                    .: {}
                    f:exec:
                      .: {}
                      f:command: {}
                f:name: {}
                f:resources: {}
                f:terminationMessagePath: {}
                f:terminationMessagePolicy: {}
            f:dnsPolicy: {}
            f:restartPolicy: {}
            f:schedulerName: {}
            f:securityContext: {}
            f:terminationGracePeriodSeconds: {}
    manager: kubectl-client-side-apply
    operation: Update
    time: "2023-05-26T07:49:37Z"
  - apiVersion: apps/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:metadata:
        f:annotations:
          f:deployment.kubernetes.io/revision: {}
      f:status:
        f:availableReplicas: {}
        f:conditions:
          .: {}
          k:{"type":"Available"}:
            .: {}
            f:lastTransitionTime: {}
            f:lastUpdateTime: {}
            f:message: {}
            f:reason: {}
            f:status: {}
            f:type: {}
          k:{"type":"Progressing"}:
            .: {}
            f:lastTransitionTime: {}
            f:lastUpdateTime: {}
            f:message: {}
            f:reason: {}
            f:status: {}
            f:type: {}
        f:observedGeneration: {}
        f:readyReplicas: {}
        f:replicas: {}
        f:updatedReplicas: {}
    manager: kube-controller-manager
    operation: Update
    subresource: status
    time: "2023-06-03T06:41:24Z"
  name: myapp
  namespace: default
  resourceVersion: "537412667"
  uid: 375a536e-e39c-4001-a234-e47e812f0bee
spec:
  progressDeadlineSeconds: 600
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: myapp
  strategy:
    type: Recreate
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: myapp
        version: 1.6.1rc253
    spec:
      containers:
      - env:
        - name: COMMON_CONFIG_COMMIT_ID
          value: 1b2e6669140391d680ff0ca34811ddc2553f15f7
        - name: OWN_CONFIG_COMMIT_ID
          value: 52a142ca003ade39a0fd96faffbe5334facc3463
        envFrom:
       

<details>
<summary>英文:</summary>

I deployed a python process into a pod of k8. The process makes of a simple logger:
 

    import sys

    import logging
    import logging.handlers
    from pathlib import Path
    import coloredlogs
    from app.core.config import settings 
    CONFIG_PATH = Path.joinpath(BASE_PATH, &#39;.configrc&#39;) 
   
    LOG_FORMAT = f&#39;%(asctime)s.[{settings.APP_NAME}] %(levelname)s %(message)s&#39;
    LOG_LEVEL = settings.dict().get(&#39;LOG_LEVEL&#39;, logging.INFO)
    LOGGER = logging.getLogger(__name__)

    
    coloredlogs.install(
        level=LOG_LEVEL,
        fmt=LOG_FORMAT,
        logger=LOGGER) 

    LOGGER.info(&quot;INFO Creating main objects...&quot;)
 
However, when I inspect the logs in k8, it always complains that those logs are errors:

    ERROR 2023-06-01T13:54:37.742688222Z [resource.labels.containerName: myapp] 2023-06-01 15:54:37.[myapp] INFO Creating main objects...

   
    {
    insertId: &quot;8xj2l2hwts2f45gt&quot;
    labels: {4}
    logName: &quot;projects/proj-iot-poc/logs/stderr&quot;
    receiveTimestamp: &quot;2023-06-01T13:54:38.596712564Z&quot;
    resource: {2}
    severity: &quot;ERROR&quot;
    textPayload: &quot;2023-06-01 15:54:37.[myapp] INFO Creating main objects...&quot;
    timestamp: &quot;2023-06-01T13:54:37.742688222Z&quot;
    }

Not worth to say that I just usedd out `LOGGER.info(&quot;Creating main objects...&quot;)` and I expect the log to be just an INFO not and ERROR...

The manifest is as follows:

apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "11"
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{},"labels":{"name":"myapp"},"name":"myapp","namespace":"default"},"spec":{"replicas":1,"selector":{"matchLabels":{"app":"myapp"}},"strategy":{"type":"Recreate"},"template":{"metadata":{"labels":{"app":"myapp","version":"1.6.1rc253"}},"spec":{"containers":[{"env":[{"name":"COMMON_CONFIG_COMMIT_ID","value":"1b2e6669140391d680ff0ca34811ddc2553f15f7"},{"name":"OWN_CONFIG_COMMIT_ID","value":"52a142ca003ade39a0fd96faffbe5334facc3463"}],"envFrom":[{"configMapRef":{"name":"myapp-config"}}],"image":"europe-west1-docker.pkg.dev/mycluster/docker-main/myapp:1.6.1rc253","lifecycle":{"preStop":{"exec":{"command":["/bin/bash","-c","sleep 5"]}}},"name":"myapp","resources":null}],"restartPolicy":"Always"}}}}
creationTimestamp: "2023-05-26T07:49:37Z"
generation: 13
labels:
name: myapp
managedFields:

  • apiVersion: apps/v1
    fieldsType: FieldsV1
    fieldsV1:
    f:metadata:
    f:annotations:
    .: {}
    f:kubectl.kubernetes.io/last-applied-configuration: {}
    f:labels:
    .: {}
    f:name: {}
    f:spec:
    f:progressDeadlineSeconds: {}
    f:revisionHistoryLimit: {}
    f:selector: {}
    f:strategy:
    f:type: {}
    f:template:
    f:metadata:
    f:labels:
    .: {}
    f:app: {}
    f:version: {}
    f:spec:
    f:containers:
    k:{"name":"myapp"}:
    .: {}
    f:env:
    .: {}
    k:{"name":"COMMON_CONFIG_COMMIT_ID"}:
    .: {}
    f:name: {}
    f:value: {}
    k:{"name":"OWN_CONFIG_COMMIT_ID"}:
    .: {}
    f:name: {}
    f:value: {}
    f:envFrom: {}
    f:image: {}
    f:imagePullPolicy: {}
    f:lifecycle:
    .: {}
    f:preStop:
    .: {}
    f:exec:
    .: {}
    f:command: {}
    f:name: {}
    f:resources: {}
    f:terminationMessagePath: {}
    f:terminationMessagePolicy: {}
    f:dnsPolicy: {}
    f:restartPolicy: {}
    f:schedulerName: {}
    f:securityContext: {}
    f:terminationGracePeriodSeconds: {}
    manager: kubectl-client-side-apply
    operation: Update
    time: "2023-05-26T07:49:37Z"
  • apiVersion: apps/v1
    fieldsType: FieldsV1
    fieldsV1:
    f:metadata:
    f:annotations:
    f:deployment.kubernetes.io/revision: {}
    f:status:
    f:availableReplicas: {}
    f:conditions:
    .: {}
    k:{"type":"Available"}:
    .: {}
    f:lastTransitionTime: {}
    f:lastUpdateTime: {}
    f:message: {}
    f:reason: {}
    f:status: {}
    f:type: {}
    k:{"type":"Progressing"}:
    .: {}
    f:lastTransitionTime: {}
    f:lastUpdateTime: {}
    f:message: {}
    f:reason: {}
    f:status: {}
    f:type: {}
    f:observedGeneration: {}
    f:readyReplicas: {}
    f:replicas: {}
    f:updatedReplicas: {}
    manager: kube-controller-manager
    operation: Update
    subresource: status
    time: "2023-06-03T06:41:24Z"
    name: myapp
    namespace: default
    resourceVersion: "537412667"
    uid: 375a536e-e39c-4001-a234-e47e812f0bee
    spec:
    progressDeadlineSeconds: 600
    replicas: 1
    revisionHistoryLimit: 10
    selector:
    matchLabels:
    app: myapp
    strategy:
    type: Recreate
    template:
    metadata:
    creationTimestamp: null
    labels:
    app: myapp
    version: 1.6.1rc253
    spec:
    containers:

    • env:
      • name: COMMON_CONFIG_COMMIT_ID
        value: 1b2e6669140391d680ff0ca34811ddc2553f15f7
      • name: OWN_CONFIG_COMMIT_ID
        value: 52a142ca003ade39a0fd96faffbe5334facc3463
        envFrom:
      • configMapRef:
        name: myapp-config
        image: europe-west1-docker.pkg.dev/mycluster/docker-main/myapp:1.6.1rc253
        imagePullPolicy: IfNotPresent
        lifecycle:
        preStop:
        exec:
        command:
        - /bin/bash
        - -c
        - sleep 5
        name: myapp
        resources: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        dnsPolicy: ClusterFirst
        restartPolicy: Always
        schedulerName: default-scheduler
        securityContext: {}
        terminationGracePeriodSeconds: 30
        status:
        availableReplicas: 1
        conditions:
  • lastTransitionTime: "2023-05-26T07:49:37Z"
    lastUpdateTime: "2023-06-01T14:33:00Z"
    message: ReplicaSet "myapp-f9bbb5f6d" has successfully progressed.
    reason: NewReplicaSetAvailable
    status: "True"
    type: Progressing
  • lastTransitionTime: "2023-06-03T06:41:24Z"
    lastUpdateTime: "2023-06-03T06:41:24Z"
    message: Deployment has minimum availability.
    reason: MinimumReplicasAvailable
    status: "True"
    type: Available
    observedGeneration: 13
    readyReplicas: 1
    replicas: 1
    updatedReplicas: 1
**EDIT**
Maybe this is realted to:
[GCP and Python Logging][1]
[1]: https://stackoverflow.com/questions/54147483/google-cloud-functions-python-logging-issue
</details>
# 答案1
**得分**: 0
在网上爬取信息后，我了解到GCP不太方便地支持Python日志记录。最终我编写了自定义的日志记录器：
```python
"""
通用的具有GCP兼容性的带有颜色的日志记录器
"""
import os
import sys
import datetime
import pprint
from typing import TextIO
class CustomLogger:
BLACK = '\033[0;30m'
RED = '\033[0;31m'
GREEN = '\033[0;32m'
BROWN = '\033[0;33m'
BLUE = '\033[0;34m'
PURPLE = '\033[0;35m'
CYAN = '\033[0;36m'
GREY = '\033[0;37m'
DARK_GREY = '\033[1;30m'
LIGHT_RED = '\033[1;31m'
BOLD_RED = "\x1b[31;1m"
LIGHT_GREEN = '\033[1;32m'
YELLOW = '\033[1;33m'
LIGHT_BLUE = '\033[1;34m'
LIGHT_PURPLE = '\033[1;35m'
LIGHT_CYAN = '\033[1;36m'
WHITE = '\033[1;37m'
RESET = "\033[0m"
def __init__(self, fmt: str = ""):
self.fmt = f"%(asctime).[{os.getenv('APP_NAME')}] %(levelname) %(message)"
self.terminal_type = os.getenv('TERM') or ""
def debug(self, message: str = ""):
out = self.__format(message)
self.sprint(self.DARK_GREY, message=out)
def warning(self, message: str = ""):
out = self.__format(message)
self.sprint(self.CYAN, message=out)
def info(self, message: str = ""):
out = self.__format(message, 'INFO')
self.sprint(self.GREEN, message=out)
def critical(self, message: str = ""):
out = self.__format(message, 'CRITICAL')
self.sprint(self.BOLD_RED, message=out, file=sys.stderr)
def exception(self, message: str = ""):
out = self.__format(message, 'CRITICAL')
self.sprint(self.LIGHT_RED, message=out, file=sys.stderr)
def error(self, message: str = ""):
out = self.__format(message, 'ERROR')
self.sprint(self.RED, message=out, file=sys.stderr)
def __format(self, message, level: str = ""):
now = datetime.datetime.now().strftime('%Y-%m-%dT%H:%M')
message = pprint.pformat(message)
return self.fmt.replace("%(message)", message).\
replace("%(asctime)", now).\
replace("%(levelname)", level)
def sprint(self, color, message, file: TextIO = sys.stdout):
if 'xterm' in self.terminal_type:
print(color + message + self.RESET)
else:
print(message)
LOGGER = CustomLogger()

省略了一些代码优化部分。

英文:

After scraping the web, I understood that GCP does not support the logging python painlessy.
I ended up writing my custom logger:

&quot;&quot;&quot;
General colorized Logger compatible with GCP
&quot;&quot;&quot;
import os
import sys
import datetime
import pprint
from typing import TextIO
class CustomLogger:
BLACK = &#39;\033[0;30m&#39;
RED = &#39;\033[0;31m&#39;
GREEN = &#39;\033[0;32m&#39;
BROWN = &#39;\033[0;33m&#39;
BLUE = &#39;\033[0;34m&#39;
PURPLE = &#39;\033[0;35m&#39;
CYAN = &#39;\033[0;36m&#39;
GREY = &#39;\033[0;37m&#39;
DARK_GREY = &#39;\033[1;30m&#39;
LIGHT_RED = &#39;\033[1;31m&#39;
BOLD_RED = &quot;\x1b[31;1m&quot;
LIGHT_GREEN = &#39;\033[1;32m&#39;
YELLOW = &#39;\033[1;33m&#39;
LIGHT_BLUE = &#39;\033[1;34m&#39;
LIGHT_PURPLE = &#39;\033[1;35m&#39;
LIGHT_CYAN = &#39;\033[1;36m&#39;
WHITE = &#39;\033[1;37m&#39;
RESET = &quot;\033[0m&quot;
pippo = &quot;1&quot;
def __init__(self, fmt: str = &quot;&quot;):
self.fmt = f&quot;%(asctime).[{os.getenv(&#39;APP_NAME&#39;)] %(levelname) %(message)&quot;
self.terminal_type = os.getenv(&#39;TERM&#39;) or &quot;&quot;
def debug(self, message: str = &quot;&quot;):
out = self.__format(message)
self.sprint(self.DARK_GREY, message=out)
def warning(self, message: str = &quot;&quot;):
out = self.__format(message)
self.sprint(self.CYAN, message=out)
def info(self, message: str = &quot;&quot;):
out = self.__format(message, &#39;INFO&#39;)
self.sprint(self.GREEN, message=out)
def critical(self, message: str = &quot;&quot;):
out = self.__format(message, &#39;CRITICAL&#39;)
self.sprint(self.BOLD_RED, message=out, file=sys.stderr)
def exception(self, message: str = &quot;&quot;):
out = self.__format(message, &#39;CRITICAL&#39;)
self.sprint(self.LIGHT_RED, message=out, file=sys.stderr)
def error(self, message: str = &quot;&quot;):
out = self.__format(message, &#39;ERROR&#39;)
self.sprint(self.RED, message=out, file=sys.stderr)
def __format(self, message, level: str = &quot;&quot;):
now = datetime.datetime.now().strftime(&#39;%Y-%m-%dT%H:%M&#39;)
message = pprint.pformat(message)
return self.fmt.replace(&quot;%(message)&quot;, message).\
replace(&quot;%(asctime)&quot;, now).\
replace(&quot;%(levelname)&quot;, level)
def sprint(self, color, message, file: TextIO = sys.stdout):
if &#39;xterm&#39; in self.terminal_type:
print(color + message + self.RESET)
else:
print(message)
LOGGER = CustomLogger()

Some code optimization omitted.

huangapple
  • 本文由 发表于 2023年6月1日 22:18:45
  • 转载请务必保留本文链接：https://go.coder-hub.com/76382889.html
  • kubernetes
  • python
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