kubernetes Fluentd 接入 Elasticsearch

我的 Elasticsearch 是单机部署的，因此要将 kubernetes Fluentd 接入 Elasticsearch，需要改点配置项。

首先是在 kubernetes 上安装 Fluentd。
下载 yaml 模板仓库：

git clone https://github.com/fluent/fluentd-kubernetes-daemonset

修改 fluentd-daemonset-elasticsearch-rbac.yaml 文件，替换

        env:
          - name:  FLUENT_ELASTICSEARCH_HOST
            value: "elasticsearch-logging"
          - name:  FLUENT_ELASTICSEARCH_PORT
            value: "9200"
          - name: FLUENT_ELASTICSEARCH_SCHEME
            value: "http"
          # Option to configure elasticsearch plugin with self signed certs
          # ================================================================
          - name: FLUENT_ELASTICSEARCH_SSL_VERIFY
            value: "true"
          # Option to configure elasticsearch plugin with tls
          # ================================================================
          - name: FLUENT_ELASTICSEARCH_SSL_VERSION
            value: "TLSv1_2"
          # X-Pack Authentication
          # =====================
          - name: FLUENT_ELASTICSEARCH_USER
            value: "elastic"
          - name: FLUENT_ELASTICSEARCH_PASSWORD
            value: "changeme"

elasticsearch-logging 是 es 的地址。

然后直接应用 yaml 文件即可。