我有一个单节点kafka代理在单节点kubernetes环境的pod中运行。我用这张图片来描述Kafka:https://hub.docker.com/r/wurstmeister/kafka
Kafka版本=1.1.0
kubernetes群集正在服务器上的vm中运行。vm在活动接口ens32上具有以下ip- 192.168.3.102
Kafka.亚马尔
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
namespace: casb-deployment
name: kafkaservice
spec:
replicas: 1
template:
metadata:
labels:
app: kafkaservice
spec:
hostname: kafkaservice
containers:
- name: kafkaservice
imagePullPolicy: IfNotPresent
image: wurstmeister/kafka:1.1.0
env:
- name: KAFKA_BROKER_ID
value: "1"
# - name: KAFKA_ADVERTISED_HOST_NAME
# value: "kafkaservice"
- name: KAFKA_LISTENER_SECURITY_PROTOCOL_MAP
value: "INTERNAL_PLAINTEXT:PLAINTEXT,EXTERNAL_PLAINTEXT:PLAINTEXT"
- name: KAFKA_LISTENERS
value: "INTERNAL_PLAINTEXT://0.0.0.0:9092,EXTERNAL_PLAINTEXT://0.0.0.0:9093"
- name: KAFKA_ADVERTISED_LISTENERS
value: "INTERNAL_PLAINTEXT://kafkaservice:9092,EXTERNAL_PLAINTEXT://192.168.3.102:9093"
- name: KAFKA_INTER_BROKER_LISTENER_NAME
value: "INTERNAL_PLAINTEXT"
- name: KAFKA_CREATE_TOPICS
value: "topic-1:100:1,topic-2:1:1"
- name: KAFKA_ZOOKEEPER_CONNECT
value: "zookeeper:2181"
ports:
- name: port9092
containerPort: 9092
- name: port9093
containerPort: 9093
volumeMounts:
- mountPath: /kafka/kafka-logs-kafkaservice
name: kafka-volume
volumes:
- name: kafka-volume
hostPath:
path: /home/volume/kafka-logs
---
apiVersion: v1
kind: Service
metadata:
namespace: casb-deployment
name: kafkaservice
labels:
app: kafkaservice
spec:
selector:
app: kafkaservice
ports:
- name: port9092
port: 9092
targetPort: 9092
protocol: TCP
---
apiVersion: v1
kind: Service
metadata:
namespace: casb-deployment
name: kafkaservice-external
labels:
app: kafkaservice-external
spec:
selector:
app: kafkaservice
ports:
- name: port9093
port: 9093
protocol: TCP
nodePort: 30035
type: NodePort
我可以从本地机器ping vm,即kubernetes节点 ping 192.168.3.102
我正在使用nodeport公开服务。
我也可以远程登录 telnet 192.168.3.102 30035
它给出了:
Trying 192.168.3.102...
Connected to 192.168.3.102.
Escape character is '^]'.
我尝试从本地计算机运行kafka控制台consumer and producer:
consumer:bin/kafka-console-consumer.sh--引导服务器192.168.3.102:30035--主题1--从头开始
输出:
[2019-09-25 12:30:40,716] WARN [Consumer clientId=consumer-1, groupId=console-consumer-20551] Connection to node 1 could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)
制作人:
bin/kafka-console-producer.sh --broker-list 192.168.3.102:30035 --topic topic-1
输出:
[2019-09-25 12:32:07,958] WARN [Producer clientId=console-producer] Connection to node 1 could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)
网络状态:
netstat -tulpn | grep 30035
tcp6 0 0 :::30035 :::* LISTEN 113545/kube-proxy
我试着运行一个基于python的消费者,即kafka python==1.4.2,它给了我以下日志:
[2019-09-25T12:15:39+0500] INFO kafka.client Bootstrapping cluster metadata from [('192.168.3.102', 30035, <AddressFamily.AF_INET: 2>)]
[2019-09-25T12:15:39+0500] INFO kafka.conn <BrokerConnection node_id=bootstrap host=192.168.3.102:30035 <connecting> [IPv4 ('192.168.3.102', 30035)]>: connecting to 192.168.3.102:30035 [('192.168.3.102', 30035) IPv4]
[2019-09-25T12:15:39+0500] INFO kafka.conn <BrokerConnection node_id=bootstrap host=192.168.3.102:30035 <connecting> [IPv4 ('192.168.3.102', 30035)]>: Connection complete.
[2019-09-25T12:15:39+0500] INFO kafka.client Bootstrap succeeded: found 1 brokers and 26 topics.
[2019-09-25T12:15:39+0500] INFO kafka.conn <BrokerConnection node_id=bootstrap host=192.168.3.102:30035 <connected> [IPv4 ('192.168.3.102', 30035)]>: Closing connection.
[2019-09-25T12:15:39+0500] INFO kafka.conn <BrokerConnection node_id=1 host=192.168.3.102:9093 <connecting> [IPv4 ('192.168.3.102', 9093)]>: connecting to 192.168.3.102:9093 [('192.168.3.102', 9093) IPv4]
[2019-09-25T12:15:39+0500] INFO kafka.conn Probing node 1 broker version
[2019-09-25T12:15:39+0500] ERROR kafka.conn Connect attempt to <BrokerConnection node_id=1 host=192.168.3.102:9093 <connecting> [IPv4 ('192.168.3.102', 9093)]> returned error 111. Disconnecting.
[2019-09-25T12:15:39+0500] INFO kafka.conn <BrokerConnection node_id=1 host=192.168.3.102:9093 <connecting> [IPv4 ('192.168.3.102', 9093)]>: Closing connection. ConnectionError: 111 ECONNREFUSED
[2019-09-25T12:15:40+0500] INFO kafka.conn <BrokerConnection node_id=1 host=192.168.3.102:9093 <connecting> [IPv4 ('192.168.3.102', 9093)]>: connecting to 192.168.3.102:9093 [('192.168.3.102', 9093) IPv4]
[2019-09-25T12:15:40+0500] ERROR kafka.conn Connect attempt to <BrokerConnection node_id=1 host=192.168.3.102:9093 <connecting> [IPv4 ('192.168.3.102', 9093)]> returned error 111. Disconnecting.
[2019-09-25T12:15:40+0500] INFO kafka.conn <BrokerConnection node_id=1 host=192.168.3.102:9093 <connecting> [IPv4 ('192.168.3.102', 9093)]>: Closing connection. ConnectionError: 111 ECONNREFUSED
[2019-09-25T12:15:40+0500] INFO Activity URL collector Exception in activity url collector: NoBrokersAvailable
从日志上看,似乎是建立了联系。
<connecting> [IPv4 ('192.168.3.102', 30035)]>: Connection complete.
Bootstrap succeeded: found 1 brokers and 26 topics.
但后来断开了。
请帮助我找出我遗漏了什么,以及如何解决这个问题。谢谢。
3条答案
按热度按时间frebpwbc1#
我也会建议斯特里姆齐为Kafka在Kubernetes。对于外部访问,这篇文章救了我https://developers.redhat.com/blog/2019/06/11/accessing-apache-kafka-in-strimzi-part-4-load-balancers/. 我的配置看起来像:
这是用来检索ip的
pod7payv2#
您正在引导到端口30035,并获得初始连接,然后为后续连接返回播发的端口9093,而不是30035。
您需要nodeport和公布的nodeport相同,或者至少两者都是外部可路由的。如果代码在主机上运行,那么您还需要在vm上进行端口转发
注:合流或斯特里姆齐 Helm 图表存在设置Kafka在Kubernetes
wxclj1h53#
在aws/digitalocean/gce/azure中的kubernetes上简单配置kafka/zookeeper,外部访问:
https://github.com/stanislavko/k8s_digitalocean_kafka
您可以通过常规二进制协议从aws/do/gce外部连接到kafka。连接为纯文本或sasl\u纯文本(用户名/密码)。
kafka集群是statefolset,所以您可以轻松地扩展集群。