Use a custom solution to collect application logs - Container Compute Service

In addition to Simple Log Service, you can develop your own log collection system to collect logs from applications deployed in Container Compute Service (ACS). An example of such a system is the EFK stack, which consists of Elasticsearch, Filebeat, and Kibana. ACS does not support the deployment of DaemonSet components. Therefore, a log collection agent, such as Filebeat, must run in a sidecar container to collect logs. This topic describes how to deploy a custom log collection agent on ACS.

Prerequisites

An ACS cluster is created. For more information, see Create an ACS cluster.

Background information

In typical log collection solutions, an agent, such as Filebeat, is deployed as a sidecar container that runs alongside the application container in each pod instance. The agent collects logs generated by the application container.

Important

In sidecar mode, the log collection agent must share a log directory with the application container. The application container writes logs to the shared directory. The agent listens for changes in the log files stored in the shared directory and collects new logs.

The following types of logs can be collected:

Standard output
Collecting standard output logs relies on an EmptyDir volume with its Medium set to Stdout. When you create a pod, you can mount this volume to the sidecar container. The sidecar container can then access standard output logs, which are collected by the basic components of ACS as files.
Note
- Each pod can have a maximum of 1 EmptyDir volume with its Medium set to Stdout. The volume must be mounted to at least 1 container.
- Collecting standard output logs adds performance overhead and increases storage costs.
- Automatic rotation is configured for standard output logs. For more information, see log rotation. Log rotation is triggered when a log file reaches 10 MiB. A maximum of 5 log files are stored for each container.
Text files
To collect text files, you can use a shared volume in a pod. A volume can be mounted to multiple containers in a pod. This allows the sidecar container to collect text files that are stored by the application container in the shared volume.

Function Introduction

Container startup and exit order and pods created by Jobs

Sidecar containers usually have the following requirements:

Sidecar containers must start before application containers and exit after application containers.
For pods created by Jobs, sidecar containers must exit after the application containers exit.

To meet these requirements in ACS, you can set the __IS_SIDECAR__="true" environment variable in the sidecar container configuration. For more information, see Configure the startup and stop sequence of sidecar containers.

Collect container file logs in sidecar mode

If you use a sidecar container to collect the file logs of an application container, you can use a shared volume. For more information, see collecting application container file logs in sidecar mode.

Collect container stdout logs in sidecar mode

In ACS, you can set volumes.emptyDir.medium=Stdout to collect container stdout logs. For more information about the configuration, see Scenario 1.

Scenario 1: Collect application file logs and stdout logs

Use the following content to create a deployment that contains a Filebeat sidecar container.

You can configure a StatefulSet in the same way.

Expand to view the YAML content

apiVersion: v1
kind: ConfigMap
metadata:
  name: filebeat-config
data:
  filebeat.yml: |
    filebeat.inputs:
      - type: log
        paths:
          - /var/log/*
          - /stdout/*
    output.elasticsearch:
      host: '${NODE_NAME}'
      hosts: '["https://${ELASTICSEARCH_HOSTS:elasticsearch-master:9200}"]'
      username: '${ELASTICSEARCH_USERNAME}'
      password: '${ELASTICSEARCH_PASSWORD}'
      protocol: https
      ssl.certificate_authorities: [ "/usr/share/filebeat/certs/ca.crt" ]
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
        - args:
            - -e
            - -E
            - http.enabled=true
          env:
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
            - name: NODE_NAME
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: spec.nodeName
            - name: ELASTICSEARCH_USERNAME
              valueFrom:
                secretKeyRef:
                  key: username
                  name: elasticsearch-master-credentials
            - name: ELASTICSEARCH_PASSWORD
              valueFrom:
                secretKeyRef:
                  key: password
                  name: elasticsearch-master-credentials
            - name: __IS_SIDECAR__
              value: "true"
          image: mirrors-ssl.aliyuncs.com/docker.elastic.co/beats/filebeat:8.5.1
          imagePullPolicy: Always
          name: filebeat
          resources:
            limits:
              cpu: 250m
              ephemeral-storage: 30Gi
              memory: 512Mi
            requests:
              cpu: 250m
              ephemeral-storage: 30Gi
              memory: 512Mi
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          volumeMounts:
            - mountPath: /var/log
              name: varlog
              readOnly: true
            - mountPath: /stdout
              name: stdout-log
              readOnly: true
            - mountPath: /usr/share/filebeat/certs/
              name: elasticsearch-master-certs
            - mountPath: /usr/share/filebeat/filebeat.yml
              name: filebeat-config
              readOnly: true
              subPath: filebeat.yml
        - image: mirrors-ssl.aliyuncs.com/nginx:latest
          name: nginx
          volumeMounts:
            - mountPath: /var/log/nginx
              name: varlog
      volumes:
        ## Shared volume for collecting file logs.
        - emptyDir: {}
          name: varlog
        ## Collect stdout logs.
        - emptyDir:
            medium: Stdout
          name: stdout-log
        - name: elasticsearch-master-certs
          secret:
            secretName: elasticsearch-master-certs
        - configMap:
            name: filebeat-config
          name: filebeat-config
# The following configuration is for demonstration purposes only.
# In a production environment, replace it with the configuration that is automatically generated when you deploy EFK.
---
apiVersion: v1
data:
  ca.crt: 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
  tls.crt: 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
  tls.key: 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
kind: Secret
metadata:
  name: elasticsearch-master-certs
type: kubernetes.io/tls
---
apiVersion: v1
data:
  password: Z3BVMTFFZXZNWWFmMkVCUw==
  username: ZWxhc3RpYw==
kind: Secret
metadata:
  name: elasticsearch-master-credentials
type: Opaque

Run the following command to query information about the pod.

kubectl get pods -l app=nginx

NAME                     READY   STATUS    RESTARTS   AGE
nginx-85776xxxxx-xxxxx   2/2     Running   0          13m

View the logs.

Run the following command to enter the filebeat container.
```
kubectl exec -it deploy/nginx -c filebeat -- /bin/bash
```

In the filebeat container, view the application logs.

cat /var/log/error.log

Expected output:

2024/10/30 10:38:28 [notice] 1#1: using the "epoll" event method
2024/10/30 10:38:28 [notice] 1#1: nginx/1.21.5
2024/10/30 10:38:28 [notice] 1#1: built by gcc 10.2.1 20210110 (Debian 10.2.1-6)
2024/10/30 10:38:28 [notice] 1#1: OS: Linux 5.10.134-17.0.2.lifsea8.x86_64
2024/10/30 10:38:28 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
2024/10/30 10:38:28 [notice] 1#1: start worker processes
2024/10/30 10:38:28 [notice] 1#1: start worker process 32

In the filebeat container, view the standard output.

cat /stdout/nginx/0.log

Expected output:

2024-10-30T18:38:28.37305498+08:00 stdout F /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
2024-10-30T18:38:28.373072927+08:00 stdout F /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
2024-10-30T18:38:28.379999685+08:00 stdout F /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
2024-10-30T18:38:28.391562633+08:00 stdout F 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
2024-10-30T18:38:28.405538758+08:00 stdout F 10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
2024-10-30T18:38:28.405657957+08:00 stdout F /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
2024-10-30T18:38:28.409014952+08:00 stdout F /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
2024-10-30T18:38:28.410397615+08:00 stdout F /docker-entrypoint.sh: Configuration complete; ready for start up

Scenario 2: Collect logs from task-based applications

Use the following content to deploy a task that is built based on busybox to print to the standard output. This task automatically exits after 100 s.

The following two YAML files show different ways to configure a sidecar container. The deployed tasks are identical.

Kubernetes 1.28 and earlier versions

Use the following content to deploy the busybox-stdout task.

Expand to view the YAML content

apiVersion: v1
kind: ConfigMap
metadata:
  name: filebeat-config
data:
  filebeat.yml: |
    filebeat.inputs:
      - type: log
        paths:
          - /stdout/*
    output.elasticsearch:
      host: '${NODE_NAME}'
      hosts: '["https://${ELASTICSEARCH_HOSTS:elasticsearch-master:9200}"]'
      username: '${ELASTICSEARCH_USERNAME}'
      password: '${ELASTICSEARCH_PASSWORD}'
      protocol: https
      ssl.certificate_authorities: [ "/usr/share/filebeat/certs/ca.crt" ]
---
apiVersion: batch/v1
kind: Job
metadata:
  name: busybox-stdout
spec:
  template:
    spec:
      containers:
        - args:
            - -e
            - -E
            - http.enabled=true
          env:
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
            - name: NODE_NAME
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: spec.nodeName
            - name: ELASTICSEARCH_USERNAME
              valueFrom:
                secretKeyRef:
                  key: username
                  name: elasticsearch-master-credentials
            - name: ELASTICSEARCH_PASSWORD
              valueFrom:
                secretKeyRef:
                  key: password
                  name: elasticsearch-master-credentials
            - name: __IS_SIDECAR__
              value: "true"
          image: mirrors-ssl.aliyuncs.com/docker.elastic.co/beats/filebeat:8.5.1
          imagePullPolicy: Always
          name: filebeat
          resources:
            limits:
              cpu: 250m
              ephemeral-storage: 30Gi
              memory: 512Mi
            requests:
              cpu: 250m
              ephemeral-storage: 30Gi
              memory: 512Mi
          volumeMounts:
            - mountPath: /stdout
              name: stdout-log
              readOnly: true
            - mountPath: /usr/share/filebeat/certs/
              name: elasticsearch-master-certs
            - mountPath: /usr/share/filebeat/filebeat.yml
              name: filebeat-config
              readOnly: true
              subPath: filebeat.yml
        - name: busybox
          image: mirrors-ssl.aliyuncs.com/busybox:latest
          command: [ "sh", "-c" ]
          args:
            - |
              for i in $(seq 1 100); do
                echo "Log message $i"
                sleep 1
              done
      volumes:
        ## Collect stdout logs.
        - emptyDir:
            medium: Stdout
          name: stdout-log
        - name: elasticsearch-master-certs
          secret:
            secretName: elasticsearch-master-certs
        - configMap:
            name: filebeat-config
          name: filebeat-config
      restartPolicy: OnFailure
# The following configuration is for demonstration purposes only.
# In a production environment, replace it with the configuration that is automatically generated when you deploy EFK.
---
apiVersion: v1
data:
  ca.crt: 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
  tls.crt: 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
  tls.key: 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
kind: Secret
metadata:
  name: elasticsearch-master-certs
type: kubernetes.io/tls
---
apiVersion: v1
data:
  password: Z3BVMTFFZXZNWWFmMkVCUw==
  username: ZWxhc3RpYw==
kind: Secret
metadata:
  name: elasticsearch-master-credentials
type: Opaque

Enter the Filebeat container. You can view the file logs and standard output from the nginx container.

% kubectl exec -it busybox-stdout-4fwnx -c filebeat -- /bin/bash

$ cat /stdout/busybox/0.log
2024-11-07T18:46:06.77002301+08:00 stdout F Log message 1
2024-11-07T18:46:07.77143368+08:00 stdout F Log message 2
2024-11-07T18:46:08.772840307+08:00 stdout F Log message 3
2024-11-07T18:46:09.774047629+08:00 stdout F Log message 4
2024-11-07T18:46:10.776122173+08:00 stdout F Log message 5
2024-11-07T18:46:11.778271688+08:00 stdout F Log message 6

Kubernetes 1.29 and later versions

apiVersion: v1
kind: ConfigMap
metadata:
  name: filebeat-config
data:
  filebeat.yml: |
    filebeat.inputs:
      - type: log
        paths:
          - /stdout/*
    output.elasticsearch:
      host: '${NODE_NAME}'
      hosts: '["https://${ELASTICSEARCH_HOSTS:elasticsearch-master:9200}"]'
      username: '${ELASTICSEARCH_USERNAME}'
      password: '${ELASTICSEARCH_PASSWORD}'
      protocol: https
      ssl.certificate_authorities: [ "/usr/share/filebeat/certs/ca.crt" ]
---
apiVersion: batch/v1
kind: Job
metadata:
  name: busybox-stdout
spec:
  template:
    spec:
      initContainers:
        - args:
            - -e
            - -E
            - http.enabled=true
          env:
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
            - name: NODE_NAME
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: spec.nodeName
            - name: ELASTICSEARCH_USERNAME
              valueFrom:
                secretKeyRef:
                  key: username
                  name: elasticsearch-master-credentials
            - name: ELASTICSEARCH_PASSWORD
              valueFrom:
                secretKeyRef:
                  key: password
                  name: elasticsearch-master-credentials
          image: mirrors-ssl.aliyuncs.com/docker.elastic.co/beats/filebeat:8.5.1
          imagePullPolicy: Always
          restartPolicy: Always  # Declare this container as a sidecar.
          name: filebeat
          resources:
            limits:
              cpu: 250m
              ephemeral-storage: 30Gi
              memory: 512Mi
            requests:
              cpu: 250m
              ephemeral-storage: 30Gi
              memory: 512Mi
          volumeMounts:
            - mountPath: /stdout
              name: stdout-log
              readOnly: true
            - mountPath: /usr/share/filebeat/certs/
              name: elasticsearch-master-certs
            - mountPath: /usr/share/filebeat/filebeat.yml
              name: filebeat-config
              readOnly: true
              subPath: filebeat.yml
      containers:
        - name: busybox
          image: mirrors-ssl.aliyuncs.com/busybox:latest
          command: [ "sh", "-c" ]
          args:
            - |
              for i in $(seq 1 100); do
                echo "Log message $i"
                sleep 1
              done
      volumes:
        ## Collect stdout logs.
        - emptyDir:
            medium: Stdout
          name: stdout-log
        - name: elasticsearch-master-certs
          secret:
            secretName: elasticsearch-master-certs
        - configMap:
            name: filebeat-config
          name: filebeat-config
      restartPolicy: OnFailure
# The following configuration is for demonstration purposes only.
# In a production environment, replace it with the configuration that is automatically generated when you deploy EFK.
---
apiVersion: v1
data:
  ca.crt: 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
  tls.crt: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSURpRENDQW5DZ0F3SUJBZ0lSQUp3R2cyNVR5YUNEVmlxNWJEbDliREF3RFFZSktvWklodmNOQVFFTEJRQXcKR3pFWk1CY0dBMVVFQXhNUVpXeGhjM1JwWTNObFlYSmphQzFqWVRBZUZ3MHlOREV3TWprd056RTNNamxhRncweQpOVEV3TWprd056RTNNamxhTUI4eEhUQWJCZ05WQkFNVEZHVnNZWE4wYVdOelpXRnlZMmd0YldGemRHVnlNSUlCCklqQU5CZ2txaGtpRzl3MEJBUUVGQUFPQ0FROEFNSUlCQ2dLQ0FRRUE0L1QzMUp5VzJTSCtHZjhVTHJXVmhYZmwKdHhJRytMcGFGK0l6Q2lnSGh6QW5ZZnoyM0luQTZLOG9WWWtsejZLZzRzbEZjeXRHbStxd01ta3c3QzZXeHRVRwpSWlZiUXloZDZ6L1laRGhGUVpCQXZMWDVRVnIwWmIyRlN0NjdQM3dNa3Z1RE16TVZnRXoxZ2x0TmRyOVZiOXQyCjRUTXBka09GeFpPV24rZ0IyM0l3YnlNb0ZIMVNDZ1ZtcC9EQTNHZU1ENGErWURUcGowd1dSUFRRemdNcXh4YkUKd3FFdGN5R01yLzF6Sm4ycDZ6SWdmV3E0K1pwM2lRU2VOdjFUWWpHVm5xYzdWWUhDd29nb3pSRDI5TldTbC9BMApVSTVsbld3SDI3aU51QU1pVWFQRmx4eWtNbTlFbSs4SUcrT2VsRks4aDlBSEl2TDVYSFJjT3VOQzk2SjU1d0lECkFRQUJvNEhDTUlHL01BNEdBMVVkRHdFQi93UUVBd0lGb0RBZEJnTlZIU1VFRmpBVUJnZ3JCZ0VGQlFjREFRWUkKS3dZQkJRVUhBd0l3REFZRFZSMFRBUUgvQkFJd0FEQWZCZ05WSFNNRUdEQVdnQlRucTk2YW5ndk9nKzVGdjBYdQpmMStvNGptK2REQmZCZ05WSFJFRVdEQldnaFJsYkdGemRHbGpjMlZoY21Ob0xXMWhjM1JsY29JY1pXeGhjM1JwClkzTmxZWEpqYUMxdFlYTjBaWEl1WkdWbVlYVnNkSUlnWld4aGMzUnBZM05sWVhKamFDMXRZWE4wWlhJdVpHVm0KWVhWc2RDNXpkbU13RFFZSktvWklodmNOQVFFTEJRQURnZ0VCQURwMVlXOFBmMm5YMldqeU5YZlVTSVJiamN0YQo2RTVpQzEwdENlbUxFZVpPZlpSRGtKOUVSaUNFQ2tUVUNCNy9QemFrTlE1UGNYQzVmcmYyWCtucGZ3RFFyREN4ClM0WkpEMWZFeHN0Yis3L29yQmgrWXNYcHJiUUJMbDJ6M0w0dm5tZ1kyb3V5bjdyT2NOdWQveENvWUdBVUd4a0YKdmVvUDNld0NUVzlaUVhGVWF0WUUzMno1bHRXTlRTOE5RU1hQRUtoSUlqYWNOL29SQ2ZhY1pRaTFoOUhTczdzQQpOcmludkRCTnE4bDl0b3g5NFZadCtXN3NmUXZvVU5hTTV1OXk0UU5Ib25rdUZ2enZMdkpGeEtvbWE0RmtFOHl5CmphR2RpUXh2NVFXdW1sTlBzZ3VOUUpSMnp3QzJEUkVVZUR1WC96Zk9xdDBucDFOZWpoWU11VTIyVk5zPQotLS0tLUVORCBDRVJUSUZJQ0FURS0tLS0tCg==
  tls.key: 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
kind: Secret
metadata:
  name: elasticsearch-master-certs
type: kubernetes.io/tls
---
apiVersion: v1
data:
  password: Z3BVMTFFZXZNWWFmMkVCUw==
  username: ZWxhc3RpYw==
kind: Secret
metadata:
  name: elasticsearch-master-credentials
type: Opaque

Scenario 3: Automatically inject sidecar containers based on an OpenKruise SidecarSet

The preceding methods require you to add the sidecar container configuration to each workload. This increases the management overhead if you have many workloads. You can use an OpenKruise SidecarSet to manage sidecar containers. This lets you automatically inject and independently upgrade sidecar containers. This way, you can perform the configuration only once to achieve automatic injection. For more information, see Inject a sidecar container into a pod on a virtual node.