elasticsearch - metricbeat kubernetes DNS 查找失败 : no such host

Question

我尝试按照此处 ( https://www.elastic.co/guide/en/beats/metricbeat/current/running-on-kubernetes.html ) 在 GCP kubernetes 集群上运行官方 metricbeat docker 镜像作为 deamonset 并更改设置，以便它应该将流量路由到现有的 Elasticsearch pod，但我不断收到错误消息:

2018-02-22T14:04:54.515Z    WARN    transport/tcp.go:36 DNS lookup failure "elasticsearch-logging.kube-system.svc.cluster.local": lookup elasticsearch-logging.kube-system.svc.cluster.local: no such host
2018-02-22T14:04:55.516Z    ERROR   pipeline/output.go:74   Failed to connect: Get http://elasticsearch-logging.kube-system.svc.cluster.local:9200: lookup elasticsearch-logging.kube-system.svc.cluster.local: no such host
2018-02-22T14:04:55.517Z    WARN    transport/tcp.go:36 DNS lookup failure "elasticsearch-logging.kube-system.svc.cluster.local": lookup elasticsearch-logging.kube-system.svc.cluster.local: no such host
2018-02-22T14:04:57.517Z    ERROR   pipeline/output.go:74   Failed to connect: Get http://elasticsearch-logging.kube-system.svc.cluster.local:9200: lookup elasticsearch-logging.kube-system.svc.cluster.local: no such host
2018-02-22T14:04:57.519Z    WARN    transport/tcp.go:36 DNS lookup failure "elasticsearch-logging.kube-system.svc.cluster.local": lookup elasticsearch-logging.kube-system.svc.cluster.local: no such host
2018-02-22T14:05:01.519Z    ERROR   pipeline/output.go:74   Failed to connect: Get http://elasticsearch-logging.kube-system.svc.cluster.local:9200: lookup elasticsearch-logging.kube-system.svc.cluster.local: no such host
2018-02-22T14:05:01.532Z    WARN    transport/tcp.go:36 DNS lookup failure "elasticsearch-logging.kube-system.svc.cluster.local": lookup elasticsearch-logging.kube-system.svc.cluster.local: no such host

主机名没有问题，因为其他 pod 正在成功将数据推送到 elastic。现在，经过一些研究，这证明是 Golang DNS 解析器(而不是 metricbeat 本身)的问题。 还有其他人遇到过这个问题吗？任何解决方案？

Answer 1

我们有同样的问题，解决它的方法是添加这个

hostNetwork: true  
dnsPolicy: ClusterFirstWithHostNet  

在与容器标签相同级别的 DaemonSet yaml 中