英文:
Command [/usr/local/bin/dub path /var/lib/kafka/data writable] FAILED ! in Kafka
问题
我想在K8s集群中部署Kafka。我已经部署了一个Zookeeper，没有任何问题，但部署Kafka后它无法正常运行，卡在crashloopbackoff中。我检查了它的日志，以下是日志内容：
===> 用户 uid=1000(appuser) gid=1000(appuser) 组=1000(appuser)
===> 配置中...
===> 运行预检查...
===> 检查 /var/lib/kafka/data 是否可写...
命令 [/usr/local/bin/dub path /var/lib/kafka/data writable] 失败！
以下是我的部署文件：
kind: Deployment
apiVersion: apps/v1
metadata:
name: kafka-broker0
spec:
replicas: 2
selector:
matchLabels:
app: kafka
id: "0"
template:
metadata:
labels:
app: kafka
id: "0"
spec:
containers:
- name: kafka
image: confluentinc/cp-kafka:6.2.2
ports:
- containerPort: 9092
env:
- name: KAFKA_ADVERTISED_LISTENERS
value: PLAINTEXT://127.0.0.1:9092
- name: KAFKA_ZOOKEEPER_CONNECT
value: zoo1:2181
- name: KAFKA_BROKER_ID
value: "0"
- name: KAFKA_CREATE_TOPICS
value: input:1:1, output:1:1
volumeMounts:
- mountPath: /var/lib/kafka/data
name: kafka-data
volumes:
- name: kafka-data
persistentVolumeClaim:
claimName: kafka-data
我发现了这个链接，但所有解决方案都是关于使用Docker部署，没有Kubernetes的解决方案。我也尝试添加 user: root 或 user: "0:0"，但找不到如何添加它的方法。
英文:
I want to deploy a kafka in k8s cluster.I have a zookeeper which is deploy without any issue but for deploying the kafka it doesnot become running and stuck in crashloopbackoff.I check it logs and here is its log:
===> User uid=1000(appuser) gid=1000(appuser) groups=1000(appuser)
===> Configuring ...
===> Running preflight checks ...
===> Check if /var/lib/kafka/data is writable ...
Command [/usr/local/bin/dub path /var/lib/kafka/data writable] FAILED !
And here is my deployment file :
kind: Deployment
apiVersion: apps/v1
metadata:
name: kafka-broker0
spec:
replicas: 2
selector:
matchLabels:
app: kafka
id: "0"
template:
metadata:
labels:
app: kafka
id: "0"
spec:
containers:
- name: kafka
image: confluentinc/cp-kafka:6.2.2
ports:
- containerPort: 9092
env:
- name: KAFKA_ADVERTISED_LISTENERS
value: PLAINTEXT://127.0.0.1:9092
- name: KAFKA_ZOOKEEPER_CONNECT
value: zoo1:2181
- name: KAFKA_BROKER_ID
value: "0"
- name: KAFKA_CREATE_TOPICS
value: input:1:1, output:1:1
volumeMounts:
- mountPath: /var/lib/kafka/data
name: kafka-data
volumes:
- name: kafka-data
persistentVolumeClaim:
claimName: kafka-data
I find this link but in all sulotions the talk about deploy with docker and there isn't any solution for kubernetes.Also I try to add user: root or user: "0:0" but I couldn't find out how to add it.
答案1
得分: 1
I had the same problem and I found a way to do a similar thing to the link you are talking about but using Kubernetes.
In the pod configuration you can add:
spec:
containers:
- name: kafka
image: confluentinc/cp-kafka:6.2.2
securityContext:
runAsUser: 0
runAsGroup: 0
I'm not sure whether it's the proper solution but it should work.
In my case I cannot use it as a solution because my cluster configuration does not allow me to run the pod as root.
Perhaps you can try to set runAsUser: 1000 and runAsGroup: 1000. That's the ID I see when I run the image via docker. Although not sure if that's gonna work because I can see that the ID in your logs is the same.
==> User
uid=1000(appuser) gid=1000(appuser) groups=1000(appuser)
英文:
I had the same problem and I found a way to do a similar thing to the link you are talking about but using Kubernetes.
In the pod configuration you can add:
spec:
containers:
- name: kafka
image: confluentinc/cp-kafka:6.2.2
securityContext:
runAsUser: 0
runAsGroup: 0
I'm not sure whether it's the proper solution but it should work.
In my case I cannot use it as a solution because my cluster configuration does not allow me to run the pod as root.
Perhaps you can try to set runAsUser: 1000 and runAsGroup: 1000. That's the ID I see when I run the image via docker. Although not sure if that's gonna work because I can see that the ID in your logs is the same.
===> User
uid=1000(appuser) gid=1000(appuser) groups=1000(appuser)
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