正文
在kubernetes上部署zookeeper,kafka集群
提示：扫一扫查出行【扫一扫了解最新限行尾号】
复制提示
本文采用网上镜像:mirrorgooglecontainers/kubernetes-zookeeper:1.0-3.4.10
准备共享存储:nfs,glusterfs,seaweed或其他,并在node节点挂载
本次采用seaweed分布式文件系统
node节点挂载:
./weed mount -filer=192.168.11.103:8801 -dir=/data/ -filer.path=/ &
准备kubernetes集群环境:
[root@k8s-master sts]# kubectl get nodes -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
k8s-master Ready master 97d v1.15.0 192.168.10.171 <none> CentOS Linux 7 (Core) 3.10.0-862.el7.x86_64 docker://19.3.1
k8s-node1 Ready node 97d v1.15.0 192.168.11.63 <none> CentOS Linux 7 (Core) 3.10.0-862.el7.x86_64 docker://19.3.1
[root@k8s-master sts]#
创建pv
[root@k8s-master sts]# kubectl get nodes -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
k8s-master Ready master 97d v1.15.0 192.168.10.171 <none> CentOS Linux 7 (Core) 3.10.0-862.el7.x86_64 docker://19.3.1
k8s-node1 Ready node 97d v1.15.0 192.168.11.63 <none> CentOS Linux 7 (Core) 3.10.0-862.el7.x86_64 docker://19.3.1
[root@k8s-master sts]#
使用本地目录创建pv, 确定node节点已经挂载共享存储..使用本地目录也可以
[root@k8s-master sts]# cat zk-pv.yaml
kind: PersistentVolume
apiVersion: v1
metadata:
name: pv-zk1
namespace: bigdata
annotations:
volume.beta.kubernetes.io/storage-class: "anything"
labels:
type: local
spec:
capacity:
storage: 3Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/data/zookeeper1"
persistentVolumeReclaimPolicy: Recycle
---
kind: PersistentVolume
apiVersion: v1
metadata:
name: pv-zk2
namespace: bigdata
annotations:
volume.beta.kubernetes.io/storage-class: "anything"
labels:
type: local
spec:
capacity:
storage: 3Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/data/zookeeper2"
persistentVolumeReclaimPolicy: Recycle
---
kind: PersistentVolume
apiVersion: v1
metadata:
name: pv-zk3
namespace: bigdata
annotations:
volume.beta.kubernetes.io/storage-class: "anything"
labels:
type: local
spec:
capacity:
storage: 3Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/data/zookeeper3"
persistentVolumeReclaimPolicy: Recycle
[root@k8s-master sts]#
如下:
[root@k8s-master sts]# kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
pv-zk1 3Gi RWO Recycle Available anything 5s
pv-zk2 3Gi RWO Recycle Available anything 5s
pv-zk3 3Gi RWO Recycle Available anything 5s
创建zk sts:
[root@k8s-master sts]# cat zk-sts.yaml
---
apiVersion: v1
kind: Service
metadata:
name: zk-hs
namespace: bigdata
labels:
app: zk
spec:
ports:
- port: 2888
name: server
- port: 3888
name: leader-election
clusterIP: None
selector:
app: zk
---
apiVersion: v1
kind: Service
metadata:
name: zk-cs
namespace: bigdata
labels:
app: zk
spec:
ports:
- port: 2181
name: client
selector:
app: zk
---
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
name: zk-pdb
namespace: bigdata
spec:
selector:
matchLabels:
app: zk
maxUnavailable: 1
---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
name: zk
namespace: bigdata
spec:
serviceName: zk-hs
replicas: 3
updateStrategy:
type: RollingUpdate
podManagementPolicy: Parallel
updateStrategy:
type: RollingUpdate
template:
metadata:
labels:
app: zk
spec:
containers:
- name: kubernetes-zookeeper
imagePullPolicy: IfNotPresent
image: "mirrorgooglecontainers/kubernetes-zookeeper:1.0-3.4.10"
resources:
requests:
memory: "128Mi"
cpu: "0.1"
ports:
- containerPort: 2181
name: client
- containerPort: 2888
name: server
- containerPort: 3888
name: leader-election
command:
- sh
- -c
- "start-zookeeper \
--servers=3 \
--data_dir=/var/lib/zookeeper/data \
--data_log_dir=/var/lib/zookeeper/data/log \
--conf_dir=/opt/zookeeper/conf \
--client_port=2181 \
--election_port=3888 \
--server_port=2888 \
--tick_time=2000 \
--init_limit=10 \
--sync_limit=5 \
--heap=512M \
--max_client_cnxns=60 \
--snap_retain_count=3 \
--purge_interval=12 \
--max_session_timeout=40000 \
--min_session_timeout=4000 \
--log_level=INFO"
readinessProbe:
exec:
command:
- sh
- -c
- "zookeeper-ready 2181"
initialDelaySeconds: 10
timeoutSeconds: 5
livenessProbe:
exec:
command:
- sh
- -c
- "zookeeper-ready 2181"
initialDelaySeconds: 10
timeoutSeconds: 5
volumeMounts:
- name: datadir
mountPath: /var/lib/zookeeper
securityContext:
runAsUser: 1000
fsGroup: 1000
volumeClaimTemplates:
- metadata:
name: datadir
annotations:
volume.beta.kubernetes.io/storage-class: "anything"
spec:
accessModes: [ "ReadWriteOnce" ]
resources:
requests:
storage: 3Gi
[root@k8s-master sts]#
[root@k8s-master sts]# cat zk-sts.yaml
---
apiVersion: v1
kind: Service
metadata:
name: zk-hs
namespace: bigdata
labels:
app: zk
spec:
ports:
- port: 2888
name: server
- port: 3888
name: leader-election
clusterIP: None
selector:
app: zk
---
apiVersion: v1
kind: Service
metadata:
name: zk-cs
namespace: bigdata
labels:
app: zk
spec:
ports:
- port: 2181
name: client
selector:
app: zk
---
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
name: zk-pdb
namespace: bigdata
spec:
selector:
matchLabels:
app: zk
maxUnavailable: 1
---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
name: zk
namespace: bigdata
spec:
serviceName: zk-hs
replicas: 3
updateStrategy:
type: RollingUpdate
podManagementPolicy: Parallel
updateStrategy:
type: RollingUpdate
template:
metadata:
labels:
app: zk
spec:
containers:
- name: kubernetes-zookeeper
imagePullPolicy: IfNotPresent
image: "mirrorgooglecontainers/kubernetes-zookeeper:1.0-3.4.10"
resources:
requests:
memory: "128Mi"
cpu: "0.1"
ports:
- containerPort: 2181
name: client
- containerPort: 2888
name: server
- containerPort: 3888
name: leader-election
command:
- sh
- -c
- "start-zookeeper \
--servers=3 \
--data_dir=/var/lib/zookeeper/data \
--data_log_dir=/var/lib/zookeeper/data/log \
--conf_dir=/opt/zookeeper/conf \
--client_port=2181 \
--election_port=3888 \
--server_port=2888 \
--tick_time=2000 \
--init_limit=10 \
--sync_limit=5 \
--heap=512M \
--max_client_cnxns=60 \
--snap_retain_count=3 \
--purge_interval=12 \
--max_session_timeout=40000 \
--min_session_timeout=4000 \
--log_level=INFO"
readinessProbe:
exec:
command:
- sh
- -c
- "zookeeper-ready 2181"
initialDelaySeconds: 10
timeoutSeconds: 5
livenessProbe:
exec:
command:
- sh
- -c
- "zookeeper-ready 2181"
initialDelaySeconds: 10
timeoutSeconds: 5
volumeMounts:
- name: datadir
mountPath: /var/lib/zookeeper
securityContext:
runAsUser: 1000
fsGroup: 1000
volumeClaimTemplates:
- metadata:
name: datadir
annotations:
volume.beta.kubernetes.io/storage-class: "anything"
spec:
accessModes: [ "ReadWriteOnce" ]
resources:
requests:
storage: 3Gi
[root@k8s-master sts]#
源模板文件:https://github.com/kow3ns/kubernetes-zookeeper/blob/master/manifests/zookeeper_mini.yaml
注意:有修改
由于镜像默认是zookeeper用户,所有会出现没有权限创建zookeeper目,如下所示:
修改挂载目录权限即可.简单暴力: chmod 777 ${{dirname}}
zk启动成功后:如下,pvc绑定pv
[root@k8s-master sts]# kubectl get pods -n bigdata
NAME READY STATUS RESTARTS AGE
zk-0 1/1 Running 0 18m
zk-1 1/1 Running 3 18m
zk-2 1/1 Running 2 18m
[root@k8s-master sts]# kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
pv-zk1 3Gi RWO Recycle Bound bigdata/datadir-zk-2 anything 23m
pv-zk2 3Gi RWO Recycle Bound bigdata/datadir-zk-0 anything 23m
pv-zk3 3Gi RWO Recycle Bound bigdata/datadir-zk-1 anything 23m
[root@k8s-master sts]# kubectl get pvc -n bigdata
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
datadir-zk-0 Bound pv-zk2 3Gi RWO anything 23m
datadir-zk-1 Bound pv-zk3 3Gi RWO anything 23m
datadir-zk-2 Bound pv-zk1 3Gi RWO anything 23m
[root@k8s-master sts]#
在node节点查看数据目录结构如下:
[root@k8s-node1 data]# tree -L 3 /data/
/data/
├── test
│ ├── a.txt
│ └── aaa.jpg
├── zookeeper1
│ └── data
│ ├── log
│ ├── myid
│ └── version-2
├── zookeeper2
│ └── data
│ ├── log
│ ├── myid
│ └── version-2
└── zookeeper3
└── data
├── log
├── myid
└── version-2 13 directories, 5 files
[root@k8s-node1 data]#
查看主机名:
[root@k8s-master sts]# for i in 0 1 2; do kubectl exec zk-$i -n bigdata -- hostname; done
zk-0
zk-1
zk-2
查看myid
[root@k8s-master sts]# for i in 0 1 2; do echo "myid zk-$i";kubectl exec zk-$i -n bigdata -- cat /var/lib/zookeeper/data/myid; done
myid zk-0
1
myid zk-1
2
myid zk-2
3
查看完整域名
[root@k8s-master sts]# for i in 0 1 2; do kubectl exec zk-$i -n bigdata -- hostname -f; done
zk-0.zk-hs.bigdata.svc.cluster.local
zk-1.zk-hs.bigdata.svc.cluster.local
zk-2.zk-hs.bigdata.svc.cluster.local
查看配置:
[root@k8s-master sts]# kubectl exec zk-0 -n bigdata -- cat /opt/zookeeper/conf/zoo.cfg
#This file was autogenerated DO NOT EDIT
clientPort=2181
dataDir=/var/lib/zookeeper/data
dataLogDir=/var/lib/zookeeper/data/log
tickTime=2000
initLimit=10
syncLimit=5
maxClientCnxns=60
minSessionTimeout=4000
maxSessionTimeout=40000
autopurge.snapRetainCount=3
autopurge.purgeInteval=12
server.1=zk-0.zk-hs.bigdata.svc.cluster.local:2888:3888
server.2=zk-1.zk-hs.bigdata.svc.cluster.local:2888:3888
server.3=zk-2.zk-hs.bigdata.svc.cluster.local:2888:3888
[root@k8s-master sts]#
测试zookeeper集群整体性:
在zk-1节点写入数据并查看
[root@k8s-master sts]# kubectl exec -ti zk-1 -n bigdata -- bash
zookeeper@zk-1:/$ zkCli.sh
Connecting to localhost:2181
[zk: localhost:2181(CONNECTED) 0] create /hello world
Created /hello
[zk: localhost:2181(CONNECTED) 1] get /hello
world
cZxid = 0x100000004
ctime = Wed Nov 13 02:41:56 UTC 2019
mZxid = 0x100000004
mtime = Wed Nov 13 02:41:56 UTC 2019
pZxid = 0x100000004
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 5
numChildren = 0
[zk: localhost:2181(CONNECTED) 2]
在其他节点查看数据是否同步:
比如在zk-0节点查看数据:
[root@k8s-master sts]# kubectl exec -ti zk-0 -n bigdata -- bash
zookeeper@zk-0:/$ zkCli.sh
Connecting to localhost:2181
[zk: localhost:2181(CONNECTED) 0] ls /
[hello, zookeeper]
[zk: localhost:2181(CONNECTED) 1] ls /hello
[]
[zk: localhost:2181(CONNECTED) 2] get /hello
world
cZxid = 0x100000004
ctime = Wed Nov 13 02:41:56 UTC 2019
mZxid = 0x100000004
mtime = Wed Nov 13 02:41:56 UTC 2019
pZxid = 0x100000004
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 5
numChildren = 0
[zk: localhost:2181(CONNECTED) 3]
具体使用:
将应用接入zookeeper集群
部署kafka集群
创建pv
[root@k8s-master sts]# cat kafka-pv.yaml
kind: PersistentVolume
apiVersion: v1
metadata:
name: pv-kafka1
namespace: bigdata
annotations:
volume.beta.kubernetes.io/storage-class: "anything"
labels:
type: local
spec:
capacity:
storage: 5Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/data/kafka1"
persistentVolumeReclaimPolicy: Recycle
---
kind: PersistentVolume
apiVersion: v1
metadata:
name: pv-kafka2
namespace: bigdata
annotations:
volume.beta.kubernetes.io/storage-class: "anything"
labels:
type: local
spec:
capacity:
storage: 5Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/data/kafka2"
persistentVolumeReclaimPolicy: Recycle
---
kind: PersistentVolume
apiVersion: v1
metadata:
name: pv-kafka3
namespace: bigdata
annotations:
volume.beta.kubernetes.io/storage-class: "anything"
labels:
type: local
spec:
capacity:
storage: 5Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/data/kafka3"
persistentVolumeReclaimPolicy: Recycle
[root@k8s-master sts]#
创建kafka StatefulSet
[root@k8s-master sts]# cat kafka-sts.yaml
---
apiVersion: v1
kind: Service
metadata:
name: kafka-hs
namespace: bigdata
labels:
app: kafka
spec:
ports:
- port: 9093
name: server
clusterIP: None
selector:
app: kafka
---
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
name: kafka-pdb
namespace: bigdata
spec:
selector:
matchLabels:
app: kafka
maxUnavailable: 1
---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
name: kafka
namespace: bigdata
spec:
serviceName: kafka-hs
replicas: 3
podManagementPolicy: Parallel
updateStrategy:
type: RollingUpdate
template:
metadata:
labels:
app: kafka
spec:
terminationGracePeriodSeconds: 300
containers:
- name: k8skafka
imagePullPolicy: IfNotPresent
image: mirrorgooglecontainers/kubernetes-kafka:1.0-10.2.1
resources:
requests:
memory: "256Mi"
cpu: "0.1"
ports:
- containerPort: 9093
name: server
command:
- sh
- -c
- "exec kafka-server-start.sh /opt/kafka/config/server.properties --override broker.id=${HOSTNAME##*-} \
--override listeners=PLAINTEXT://:9093 \
--override zookeeper.connect=zk-cs.bigdata.svc.cluster.local:2181 \
--override log.dir=/var/lib/kafka \
--override auto.create.topics.enable=true \
--override auto.leader.rebalance.enable=true \
--override background.threads=10 \
--override compression.type=producer \
--override delete.topic.enable=false \
--override leader.imbalance.check.interval.seconds=300 \
--override leader.imbalance.per.broker.percentage=10 \
--override log.flush.interval.messages=9223372036854775807 \
--override log.flush.offset.checkpoint.interval.ms=60000 \
--override log.flush.scheduler.interval.ms=9223372036854775807 \
--override log.retention.bytes=-1 \
--override log.retention.hours=168 \
--override log.roll.hours=168 \
--override log.roll.jitter.hours=0 \
--override log.segment.bytes=1073741824 \
--override log.segment.delete.delay.ms=60000 \
--override message.max.bytes=1000012 \
--override min.insync.replicas=1 \
--override num.io.threads=8 \
--override num.network.threads=3 \
--override num.recovery.threads.per.data.dir=1 \
--override num.replica.fetchers=1 \
--override offset.metadata.max.bytes=4096 \
--override offsets.commit.required.acks=-1 \
--override offsets.commit.timeout.ms=5000 \
--override offsets.load.buffer.size=5242880 \
--override offsets.retention.check.interval.ms=600000 \
--override offsets.retention.minutes=1440 \
--override offsets.topic.compression.codec=0 \
--override offsets.topic.num.partitions=50 \
--override offsets.topic.replication.factor=3 \
--override offsets.topic.segment.bytes=104857600 \
--override queued.max.requests=500 \
--override quota.consumer.default=9223372036854775807 \
--override quota.producer.default=9223372036854775807 \
--override replica.fetch.min.bytes=1 \
--override replica.fetch.wait.max.ms=500 \
--override replica.high.watermark.checkpoint.interval.ms=5000 \
--override replica.lag.time.max.ms=10000 \
--override replica.socket.receive.buffer.bytes=65536 \
--override replica.socket.timeout.ms=30000 \
--override request.timeout.ms=30000 \
--override socket.receive.buffer.bytes=102400 \
--override socket.request.max.bytes=104857600 \
--override socket.send.buffer.bytes=102400 \
--override unclean.leader.election.enable=true \
--override zookeeper.session.timeout.ms=6000 \
--override zookeeper.set.acl=false \
--override broker.id.generation.enable=true \
--override connections.max.idle.ms=600000 \
--override controlled.shutdown.enable=true \
--override controlled.shutdown.max.retries=3 \
--override controlled.shutdown.retry.backoff.ms=5000 \
--override controller.socket.timeout.ms=30000 \
--override default.replication.factor=1 \
--override fetch.purgatory.purge.interval.requests=1000 \
--override group.max.session.timeout.ms=300000 \
--override group.min.session.timeout.ms=6000 \
--override inter.broker.protocol.version=0.10.2-IV0 \
--override log.cleaner.backoff.ms=15000 \
--override log.cleaner.dedupe.buffer.size=134217728 \
--override log.cleaner.delete.retention.ms=86400000 \
--override log.cleaner.enable=true \
--override log.cleaner.io.buffer.load.factor=0.9 \
--override log.cleaner.io.buffer.size=524288 \
--override log.cleaner.io.max.bytes.per.second=1.7976931348623157E308 \
--override log.cleaner.min.cleanable.ratio=0.5 \
--override log.cleaner.min.compaction.lag.ms=0 \
--override log.cleaner.threads=1 \
--override log.cleanup.policy=delete \
--override log.index.interval.bytes=4096 \
--override log.index.size.max.bytes=10485760 \
--override log.message.timestamp.difference.max.ms=9223372036854775807 \
--override log.message.timestamp.type=CreateTime \
--override log.preallocate=false \
--override log.retention.check.interval.ms=300000 \
--override max.connections.per.ip=2147483647 \
--override num.partitions=3 \
--override producer.purgatory.purge.interval.requests=1000 \
--override replica.fetch.backoff.ms=1000 \
--override replica.fetch.max.bytes=1048576 \
--override replica.fetch.response.max.bytes=10485760 \
--override reserved.broker.max.id=1000 "
env:
- name: KAFKA_HEAP_OPTS
value : "-Xmx256M -Xms256M"
- name: KAFKA_OPTS
value: "-Dlogging.level=INFO"
volumeMounts:
- name: datadir
mountPath: /var/lib/kafka
readinessProbe:
exec:
command:
- sh
- -c
- "/opt/kafka/bin/kafka-broker-api-versions.sh --bootstrap-server=localhost:9093"
securityContext:
runAsUser: 1000
fsGroup: 1000
volumeClaimTemplates:
- metadata:
name: datadir
annotations:
volume.beta.kubernetes.io/storage-class: "anything" spec:
accessModes: [ "ReadWriteOnce" ]
resources:
requests:
storage: 5Gi
[root@k8s-master sts]#
注意:修改
--override zookeeper.connect=zk-cs.bigdata.svc.cluster.local:2181 zookeeper地址
image: mirrorgooglecontainers/kubernetes-kafka:1.0-10.2.1 镜像地址
正常情况下就跑起来了:
[root@k8s-master sts]# kubectl get pods -n bigdata
NAME READY STATUS RESTARTS AGE
kafka-0 1/1 Running 0 3m30s
kafka-1 1/1 Running 0 3m30s
kafka-2 1/1 Running 0 3m30s
zk-0 1/1 Running 0 139m
zk-1 1/1 Running 3 139m
zk-2 1/1 Running 2 139m
[root@k8s-master sts]#
通过zookeeper查看broker:
[root@k8s-master sts]# kubectl exec -ti zk-1 -n bigdata bash
zookeeper@zk-1:/$ zkCli.sh
Connecting to localhost:2181
[zk: localhost:2181(CONNECTED) 0] ls /
[cluster, controller, controller_epoch, brokers, zookeeper, admin, isr_change_notification, consumers, hello, config]
[zk: localhost:2181(CONNECTED) 1] ls /brokers
[ids, topics, seqid]
[zk: localhost:2181(CONNECTED) 2] ls /brokers/ids
[0, 1, 2]
[zk: localhost:2181(CONNECTED) 3]
[zk: localhost:2181(CONNECTED) 3] get /brokers/ids/0
{"listener_security_protocol_map":{"PLAINTEXT":"PLAINTEXT"},"endpoints":["PLAINTEXT://kafka-0.kafka-hs.bigdata.svc.cluster.local:9093"],"jmx_port":-1,"host":"kafka-0.kafka-hs.bigdata.svc.cluster.local","timestamp":"1573619460916","port":9093,"version":4}
cZxid = 0x10000004b
ctime = Wed Nov 13 04:31:00 UTC 2019
mZxid = 0x10000004b
mtime = Wed Nov 13 04:31:00 UTC 2019
pZxid = 0x10000004b
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x16e628b4c0a0006
dataLength = 254
numChildren = 0
[zk: localhost:2181(CONNECTED) 4] get /brokers/ids/1
{"listener_security_protocol_map":{"PLAINTEXT":"PLAINTEXT"},"endpoints":["PLAINTEXT://kafka-1.kafka-hs.bigdata.svc.cluster.local:9093"],"jmx_port":-1,"host":"kafka-1.kafka-hs.bigdata.svc.cluster.local","timestamp":"1573619460909","port":9093,"version":4}
cZxid = 0x100000048
ctime = Wed Nov 13 04:31:00 UTC 2019
mZxid = 0x100000048
mtime = Wed Nov 13 04:31:00 UTC 2019
pZxid = 0x100000048
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x36e628b4c540004
dataLength = 254
numChildren = 0
[zk: localhost:2181(CONNECTED) 5] get /brokers/ids/2
{"listener_security_protocol_map":{"PLAINTEXT":"PLAINTEXT"},"endpoints":["PLAINTEXT://kafka-2.kafka-hs.bigdata.svc.cluster.local:9093"],"jmx_port":-1,"host":"kafka-2.kafka-hs.bigdata.svc.cluster.local","timestamp":"1573619460932","port":9093,"version":4}
cZxid = 0x10000004e
ctime = Wed Nov 13 04:31:00 UTC 2019
mZxid = 0x10000004e
mtime = Wed Nov 13 04:31:00 UTC 2019
pZxid = 0x10000004e
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x26e628b922c0005
dataLength = 254
numChildren = 0
[zk: localhost:2181(CONNECTED) 6]
kafka基本操作测试
[root@k8s-master sts]# kubectl exec -it kafka-0 -n bigdata sh
$ pwd
/opt/kafka/bin
#创建test topic
$ ./kafka-topics.sh --create --topic test --zookeeper zk-cs.bigdata.svc.cluster.local:2181 --partitions 3 --replication-factor 3
Created topic "test".
#查看topic
$ ./kafka-topics.sh --zookeeper zk-cs.bigdata.svc.cluster.local:2181 --list
test
$
##模拟生产者,消费者
#生产者
$ ./kafka-console-producer.sh --topic test --broker-list kafka-0.kafka-hs.bigdata.svc.cluster.local:9093,kafka-1.kafka-hs.bigdata.svc.cluster.local:9093,kafka-2.kafka-hs.bigdata.svc.cluster.local:9093
this is a test message
hell world
#消费者消费数据
$ ./kafka-console-consumer.sh --topic test --zookeeper zk-cs.bigdata.svc.cluster.local:2181 --from-beginning
Using the ConsoleConsumer with old consumer is deprecated and will be removed in a future major release. Consider using the new consumer by passing [bootstrap-server] instead of [zookeeper].
hell world
this is a test message
具体业务接入kafka示例:
k8s集群内部域名:
[root@k8s-master sts]# kubectl exec -it kafka-0 -n bigdata sh
$ pwd
/opt/kafka/bin
#创建test topic
$ ./kafka-topics.sh --create --topic test --zookeeper zk-cs.bigdata.svc.cluster.local:2181 --partitions 3 --replication-factor 3
Created topic "test".
#查看topic
$ ./kafka-topics.sh --zookeeper zk-cs.bigdata.svc.cluster.local:2181 --list
test
$
#生产者
$ ./kafka-console-producer.sh --topic test --broker-list kafka-0.kafka-hs.bigdata.svc.cluster.local:9093,kafka-1.kafka-hs.bigdata.svc.cluster.local:9093,kafka-2.kafka-hs.bigdata.svc.cluster.local:9093
this is a test message
hell world
#消费者消费数据
$ ./kafka-console-consumer.sh --topic test --zookeeper zk-cs.bigdata.svc.cluster.local:2181 --from-beginning
Using the ConsoleConsumer with old consumer is deprecated and will be removed in a future major release. Consider using the new consumer by passing [bootstrap-server] instead of [zookeeper].
hell world
this is a test message
k8s集群内部域名:
broker-list:kafka-0.kafka-hs.bigdata.svc.cluster.local:9093,kafka-1.kafka-hs.bigdata.svc.cluster.local:9093,kafka-2.kafka-hs.bigdata.svc.cluster.local:9093
zookeeper:zk-cs.bigdata.svc.cluster.local:2181
k8s集群外部域名:
broker-list:
zookeeper:
通过nodeport:
zk:
apiVersion: v1
kind: Service
metadata:
name: zk-cs
namespace: bigdata
labels:
app: zk
spec:
type: NodePort
ports:
- port: 2181
targetPort: 2181
name: client
nodePort: 32181
selector:
app: zk
外网访问:
./bin/zkCli.sh -server 192.168.100.102:32181
[zk: 192.168.100.102:32181(CONNECTED) 1] ls /
[cluster, controller_epoch, brokers, zookeeper, admin, isr_change_notification, consumers, hello, config]
[zk: 192.168.100.102:32181(CONNECTED) 2] get /hello
world
cZxid = 0x100000004
ctime = Wed Nov 13 10:41:56 CST 2019
mZxid = 0x100000004
mtime = Wed Nov 13 10:41:56 CST 2019
pZxid = 0x100000004
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 5
numChildren = 0
[zk: 192.168.100.102:32181(CONNECTED) 3]
