问题

我想在 Elasticsearch pod 内部创建一个名为 synonyms 的文件夹，位置在 /usr/share/elasticsearch/ 下，我应该如何修改我的部署 YAML 文件以实现这一目标。

这是我的部署清单文件：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: elasticsearch
  namespace: elk
spec:
  replicas: 1
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
    spec:
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: app-elk
                operator: In
                values:
                - "elastic-tomcat"
      containers:
      - name: elasticsearch
        image: docker.elastic.co/elasticsearch/elasticsearch:7.17.5
        imagePullPolicy: Always
        resources:
            requests:
              memory: 1Gi
        ports:
        - containerPort: 9200
          protocol: TCP
          name: rest
        - containerPort: 9300
          protocol: TCP
          name: inter-node
        volumeMounts:
        - name: data-volume
          mountPath: /usr/share/elasticsearch/data
        - name: synonyms-volume  # 添加这一行用于 synonyms 文件夹挂载
          mountPath: /usr/share/elasticsearch/synonyms  # 挂载到 Elasticsearch pod 的路径
        env:
          - name: cluster.name
            value: elasticsearch-cluster
          - name: node.name
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: discovery.seed_hosts
            value: "elasticsearch-cluster-0.elasticsearch"
          - name: cluster.initial_master_nodes
            value: "elasticsearch-cluster-0"
          - name: ES_JAVA_OPTS
            value: "-Xms512m -Xmx512m"
          - name: network.host
            value: "0.0.0.0"
      initContainers:
      - name: fix-permissions
        image: busybox
        command: ["sh", "-c", "chown -R 1000:1000 /usr/share/elasticsearch/data"]
        securityContext:
          privileged: true
        volumeMounts:
        - name: data-volume
          mountPath: /usr/share/elasticsearch/data
      - name: increase-vm-max-map
        image: busybox
        command: ["sysctl", "-w", "vm.max_map_count=262144"]
        securityContext:
          privileged: true
      - name: increase-fd-ulimit
        image: busybox
        command: ["sh", "-c", "ulimit -n 65536"]
        securityContext:
          privileged: true
      volumes:
        - name: data-volume
          persistentVolumeClaim:
            claimName: elasticsearch-pvc  # 为数据存储创建一个 PVC
        - name: synonyms-volume  # 添加这一行用于 synonyms 文件夹挂载
          emptyDir: {}  # 创建一个空目录供挂载

请注意，我已经在容器部分添加了一个新的 volumeMount 来挂载 synonyms 文件夹，并在 volumes 部分创建了一个名为 synonyms-volume 的空目录，用于挂载到 Elasticsearch pod 内部的 /usr/share/elasticsearch/synonyms 路径上。这样，你就可以在该位置创建 synonyms 文件夹了。

apiVersion: apps/v1
kind: Deployment
metadata:
name: elasticsearch
namespace: elk
spec:
replicas: 1
selector:
matchLabels:
app: elasticsearch
template:
metadata:
labels:
app: elasticsearch
spec:
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: app-elk
operator: In
values:
- "elastic-tomcat"
containers:
- name: elasticsearch
image: docker.elastic.co/elasticsearch/elasticsearch:7.17.5
imagePullPolicy: Always
resources:
requests:
memory: 1Gi
ports:
- containerPort: 9200
protocol: TCP
name: rest
- containerPort: 9300
protocol: TCP
name: inter-node
volumeMounts:
- name: data-volume
mountPath: /usr/share/elasticsearch/data  
env:
- name: cluster.name
value: elasticsearch-cluster
- name: node.name
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: discovery.seed_hosts
value: "elasticsearch-cluster-0.elasticsearch"
- name: cluster.initial_master_nodes
value: "elasticsearch-cluster-0"
- name: ES_JAVA_OPTS
value: "-Xms512m -Xmx512m"
- name: network.host
value: "0.0.0.0"
initContainers:
- name: fix-permissions
image: busybox
command: ["sh", "-c", "chown -R 1000:1000 /usr/share/elasticsearch/data"]
securityContext:
privileged: true
volumeMounts:
- name: data-volume
mountPath: /usr/share/elasticsearch/data
- name: increase-vm-max-map
image: busybox
command: ["sysctl", "-w", "vm.max_map_count=262144"]
securityContext:
privileged: true
- name: increase-fd-ulimit
image: busybox
command: ["sh", "-c", "ulimit -n 65536"]
securityContext:
privileged: true
volumes:
- name: data-volume
persistentVolumeClaim:
claimName: elasticsearch-pvc  # Create a PVC for data storage

答案1

得分: 2

您可以使用init容器创建文件夹，并使用您正在运行的命令以后根据需求使用主容器。

此外，如果您正在运行多个不同的init容器，您可以使用一个容器来执行多个命令。

dnsPolicy: ClusterFirst
initContainers:
- command:
  - sh
  - -c
  - chown -R 1000:1000 /usr/share/elasticsearch/data
  - mkdir /usr/share/elasticsearch/XYZ
  - sysctl -w vm.max_map_count=262144
  - chmod 777 /usr/share/elasticsearch/data
  - chomod 777 /usr/share/elasticsearch/data/node
  - chmod g+rwx /usr/share/elasticsearch/data
  - chgrp 1000 /usr/share/elasticsearch/data
  image: busybox:1.29.2
  imagePullPolicy: IfNotPresent
  name: set-dir-owner
  resources: {}
  securityContext:
    privileged: true
  terminationMessagePath: /dev/termination-log
  terminationMessagePolicy: File
  volumeMounts:
  - mountPath: /usr/share/elasticsearch/data
    name: elasticsearch-data
restartPolicy: Always

  dnsPolicy: ClusterFirst
initContainers:
- command:
- sh
- -c
- chown -R 1000:1000 /usr/share/elasticsearch/data
- mkdir /usr/share/elasticsearch/XYZ
- sysctl -w vm.max_map_count=262144
- chmod 777 /usr/share/elasticsearch/data
- chomod 777 /usr/share/elasticsearch/data/node
- chmod g+rwx /usr/share/elasticsearch/data
- chgrp 1000 /usr/share/elasticsearch/data
image: busybox:1.29.2
imagePullPolicy: IfNotPresent
name: set-dir-owner
resources: {}
securityContext:
privileged: true
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /usr/share/elasticsearch/data
name: elasticsearch-data
restartPolicy: Always