技术验证篇，通过Kubernetes搭建一个可扩展的 CDH，并且启动hadoop。
Quick
- 主要用到
Kubernetes阿里云 - 镜像来源
https://github.com/windawings/spot-docker. - 启动文件.
yaml文件 - NAS 阿里云弹性存储 NAS
注意
- NAS 需要开启
VPC网络安全组 - 镜像需要上传到自己的私有仓库
-
Kubernetes 下载镜像需要配置
yaml << imagePullSecrets,文章结尾会将yaml奉上 -
Kubernetes默认会创建一个
SLB（用来给Ingress 使用)，我们用来暴露CDH的UI就是需要采用Ingress来进行暴露。 Ingress所在Namespace = kube-system
- 域名解析 注意是
泛域名
开始部署
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: cloudera-sa
namespace: cloudera
labels:
name: sa
app: cloudera
automountServiceAccountToken: true
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: cloudera
name: cloudera-cr
labels:
name: cr
app: cloudera
rules:
- apiGroups: ["*"]
resources: ["*"]
verbs: ["*"]
- nonResourceURLs: ["*"]
verbs: ["*"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: cloudera-crb
namespace: cloudera
labels:
name: crb
app: cloudera
subjects:
- kind: ServiceAccount
name: cloudera-sa
namespace: cloudera
roleRef:
kind: ClusterRole
name: cloudera-cr
apiGroup: rbac.authorization.k8s.io
---
apiVersion: v1
kind: ConfigMap
metadata:
name: cloudera-config
namespace: cloudera
labels:
name: cloudera-config
app: cloudera
data:
master_host: master-svc
cron.tab: |
*/30 * * * * ntpdate master-svc && hwclock --systohc
config.ini: |-
[General]
# Hostname of the CM server.
server_host=master-svc
# Port that the CM server is listening on.
server_port=7182
## It should not normally be necessary to modify these.
# Port that the CM agent should listen on.
# listening_port=9000
# IP Address that the CM agent should listen on.
# listening_ip=
# Hostname that the CM agent reports as its hostname. If unset, will be
# obtained in code through something like this:
#
# python -c 'import socket; \
# print socket.getfqdn(), \
# socket.gethostbyname(socket.getfqdn())'
#
# listening_hostname=
# An alternate hostname to report as the hostname for this host in CM.
# Useful when this agent is behind a load balancer or proxy and all
# inbound communication must connect through that proxy.
# reported_hostname=
# Port that supervisord should listen on.
# NB: This only takes effect if supervisord is restarted.
# supervisord_port=19001
# Log file. The supervisord log file will be placed into
# the same directory. Note that if the agent is being started via the
# init.d script, /var/log/cloudera-scm-agent/cloudera-scm-agent.out will
# also have a small amount of output (from before logging is initialized).
# log_file=/var/log/cloudera-scm-agent/cloudera-scm-agent.log
# Persistent state directory. Directory to store CM agent state that
# persists across instances of the agent process and system reboots.
# Particularly, the agent's UUID is stored here.
# lib_dir=/var/lib/cloudera-scm-agent
# Parcel directory. Unpacked parcels will be stored in this directory.
# Downloaded parcels will be stored in <parcel_dir>/../parcel-cache
# parcel_dir=/opt/cloudera/parcels
# Enable supervisord event monitoring. Used in eager heartbeating, amongst
# other things.
# enable_supervisord_events=true
# Maximum time to wait (in seconds) for all metric collectors to finish
# collecting data.
max_collection_wait_seconds=10.0
# Maximum time to wait (in seconds) when connecting to a local role's
# webserver to fetch metrics.
metrics_url_timeout_seconds=30.0
# Maximum time to wait (in seconds) when connecting to a local TaskTracker
# to fetch task attempt data.
task_metrics_timeout_seconds=5.0
# The list of non-device (nodev) filesystem types which will be monitored.
monitored_nodev_filesystem_types=nfs,nfs4,tmpfs
# The list of filesystem types which are considered local for monitoring purposes.
# These filesystems are combined with the other local filesystem types found in
# /proc/filesystems
local_filesystem_whitelist=ext2,ext3,ext4,xfs
# The largest size impala profile log bundle that this agent will serve to the
# CM server. If the CM server requests more than this amount, the bundle will
# be limited to this size. All instances of this limit being hit are logged to
# the agent log.
impala_profile_bundle_max_bytes=1073741824
# The largest size stacks log bundle that this agent will serve to the CM
# server. If the CM server requests more than this amount, the bundle will be
# limited to this size. All instances of this limit being hit are logged to the
# agent log.
stacks_log_bundle_max_bytes=1073741824
# The size to which the uncompressed portion of a stacks log can grow before it
# is rotated. The log will then be compressed during rotation.
stacks_log_max_uncompressed_file_size_bytes=5242880
# The orphan process directory staleness threshold. If a diretory is more stale
# than this amount of seconds, CM agent will remove it.
orphan_process_dir_staleness_threshold=5184000
# The orphan process directory refresh interval. The CM agent will check the
# staleness of the orphan processes config directory every this amount of
# seconds.
orphan_process_dir_refresh_interval=3600
# A knob to control the agent logging level. The options are listed as follows:
# 1) DEBUG (set the agent logging level to 'logging.DEBUG')
# 2) INFO (set the agent logging level to 'logging.INFO')
scm_debug=INFO
# The DNS resolution collecion interval in seconds. A java base test program
# will be executed with at most this frequency to collect java DNS resolution
# metrics. The test program is only executed if the associated health test,
# Host DNS Resolution, is enabled.
dns_resolution_collection_interval_seconds=60
# The maximum time to wait (in seconds) for the java test program to collect
# java DNS resolution metrics.
dns_resolution_collection_timeout_seconds=30
# The directory location in which the agent-wide kerberos credential cache
# will be created.
# agent_wide_credential_cache_location=/var/run/cloudera-scm-agent
[Security]
# Use TLS and certificate validation when connecting to the CM server.
use_tls=0
# The maximum allowed depth of the certificate chain returned by the peer.
# The default value of 9 matches the default specified in openssl's
# SSL_CTX_set_verify.
max_cert_depth=9
# A file of CA certificates in PEM format. The file can contain several CA
# certificates identified by
#
# -----BEGIN CERTIFICATE-----
# ... (CA certificate in base64 encoding) ...
# -----END CERTIFICATE-----
#
# sequences. Before, between, and after the certificates text is allowed which
# can be used e.g. for descriptions of the certificates.
#
# The file is loaded once, the first time an HTTPS connection is attempted. A
# restart of the agent is required to pick up changes to the file.
#
# Note that if neither verify_cert_file or verify_cert_dir is set, certificate
# verification will not be performed.
# verify_cert_file=
# Directory containing CA certificates in PEM format. The files each contain one
# CA certificate. The files are looked up by the CA subject name hash value,
# which must hence be available. If more than one CA certificate with the same
# name hash value exist, the extension must be different (e.g. 9d66eef0.0,
# 9d66eef0.1 etc). The search is performed in the ordering of the extension
# number, regardless of other properties of the certificates. Use the c_rehash
# utility to create the necessary links.
#
# The certificates in the directory are only looked up when required, e.g. when
# building the certificate chain or when actually performing the verification
# of a peer certificate. The contents of the directory can thus be changed
# without an agent restart.
#
# When looking up CA certificates, the verify_cert_file is first searched, then
# those in the directory. Certificate matching is done based on the subject name,
# the key identifier (if present), and the serial number as taken from the
# certificate to be verified. If these data do not match, the next certificate
# will be tried. If a first certificate matching the parameters is found, the
# verification process will be performed; no other certificates for the same
# parameters will be searched in case of failure.
#
# Note that if neither verify_cert_file or verify_cert_dir is set, certificate
# verification will not be performed.
# verify_cert_dir=
# PEM file containing client private key.
# client_key_file=
# A command to run which returns the client private key password on stdout
# client_keypw_cmd=
# If client_keypw_cmd isn't specified, instead a text file containing
# the client private key password can be used.
# client_keypw_file=
# PEM file containing client certificate.
# client_cert_file=
## Location of Hadoop files. These are the CDH locations when installed by
## packages. Unused when CDH is installed by parcels.
[Hadoop]
#cdh_crunch_home=/usr/lib/crunch
#cdh_flume_home=/usr/lib/flume-ng
#cdh_hadoop_bin=/usr/bin/hadoop
#cdh_hadoop_home=/usr/lib/hadoop
#cdh_hbase_home=/usr/lib/hbase
#cdh_hbase_indexer_home=/usr/lib/hbase-solr
#cdh_hcat_home=/usr/lib/hive-hcatalog
#cdh_hdfs_home=/usr/lib/hadoop-hdfs
#cdh_hive_home=/usr/lib/hive
#cdh_httpfs_home=/usr/lib/hadoop-httpfs
#cdh_hue_home=/usr/share/hue
#cdh_hue_plugins_home=/usr/lib/hadoop
#cdh_impala_home=/usr/lib/impala
#cdh_llama_home=/usr/lib/llama
#cdh_mr1_home=/usr/lib/hadoop-0.20-mapreduce
#cdh_mr2_home=/usr/lib/hadoop-mapreduce
#cdh_oozie_home=/usr/lib/oozie
#cdh_parquet_home=/usr/lib/parquet
#cdh_pig_home=/usr/lib/pig
#cdh_solr_home=/usr/lib/solr
#cdh_spark_home=/usr/lib/spark
#cdh_sqoop_home=/usr/lib/sqoop
#cdh_sqoop2_home=/usr/lib/sqoop2
#cdh_yarn_home=/usr/lib/hadoop-yarn
#cdh_zookeeper_home=/usr/lib/zookeeper
#hive_default_xml=/etc/hive/conf.dist/hive-default.xml
#webhcat_default_xml=/etc/hive-webhcat/conf.dist/webhcat-default.xml
#jsvc_home=/usr/libexec/bigtop-utils
#tomcat_home=/usr/lib/bigtop-tomcat
#oracle_home=/usr/share/oracle/instantclient
## Location of Cloudera Management Services files.
[Cloudera]
#mgmt_home=/usr/share/cmf
## Location of JDBC Drivers.
[JDBC]
cloudera_mysql_connector_jar=/usr/java/latest/mysql-connector-java.jar
#cloudera_oracle_connector_jar=/usr/share/java/oracle-connector-java.jar
#By default, postgres jar is found dynamically in $MGMT_HOME/lib
#cloudera_postgresql_jdbc_jar=
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: nfs-deploy
namespace: cloudera
labels:
name: nfs
app: cloudera
spec:
replicas: 1
revisionHistoryLimit: 2
selector:
matchLabels:
name: nfs
app: cloudera
template:
metadata:
name: nfs-client
namespace: cloudera
labels:
name: nfs
app: cloudera
spec:
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
serviceAccountName: cloudera-sa
containers:
- image: registry.cn-hangzhou.aliyuncs.com/acs/alicloud-nas-controller:v1.8.4
# imagePullPolicy: Never
name: nfs-client
# securityContext:
# privileged: true
volumeMounts:
- name: nfs-client-root
mountPath: /persistentvolumes
env:
- name: PROVISIONER_NAME
value: alicloud/nas
- name: NFS_SERVER
value: 074ca49d80-ak47.cn-hangzhou.nas.aliyuncs.com
- name: NFS_PATH
value: /pv/cloudera/agent/
volumes:
- name: nfs-client-root
nfs:
server: 074ca49d80-ak47.cn-hangzhou.nas.aliyuncs.com
path: /pv/cloudera/agent/
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: cloudera-storage
namespace: cloudera
labels:
name: storage
app: cloudera
reclaimPolicy: Delete
provisioner: alicloud/nas
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: master-deploy
namespace: cloudera
labels:
name: master-deploy
app: cloudera
spec:
replicas: 1
revisionHistoryLimit: 2
selector:
matchLabels:
name: master
app: cloudera
template:
metadata:
name: master
namespace: cloudera
labels:
name: master
app: cloudera
spec:
tolerations:
- effect: NoSchedule
key: node-role.kubernetes.io/master
restartPolicy: Always
serviceAccountName: cloudera-sa
automountServiceAccountToken: true
hostname: master-svc
containers:
- name: cloudera-master
image: registry-vpc.cn-hangzhou.aliyuncs.com/huaching_prod/cloudera-master:5.14.2
# imagePullPolicy: IfNotPresent
resources:
limits:
memory: "4096Mi"
cpu: "1000m"
lifecycle:
preStop:
exec:
command: ["/bin/bash","-c","/cloudera-init/run/stop.sh >> /cloudera/log/stop.log 2>&1"]
volumeMounts:
#- name: cloudera-init
#mountPath: /cloudera-init/run/
- name: mysql
mountPath: /var/lib/mysql/
- name: repo
mountPath: /opt/cloudera/parcel-repo/
- name: config
mountPath: /opt/cm/etc/cloudera-scm-agent/
env:
- name: HOSTNAME
valueFrom:
configMapKeyRef:
name: cloudera-config
key: master_host
- name: POD_IP
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: status.podIP
- name: POD_NAME
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.name
ports:
- containerPort: 7180
name: ui
- containerPort: 9000
name: agent
- containerPort: 7182
name: server
- containerPort: 7191
name: parcel
- containerPort: 4434
name: parcel-ssl
securityContext:
privileged: true
imagePullSecrets:
- name: registrykey-vpc
volumes:
- name: repo
nfs:
server: 074ca49d80-ak47.cn-hangzhou.nas.aliyuncs.com
path: /pv/cloudera/repo/
- name: mysql
nfs:
server: 074ca49d80-ak47.cn-hangzhou.nas.aliyuncs.com
path: /pv/cloudera/master/
#- name: cloudera-init
#configMap:
#name: cloudera-config
#defaultMode: 0751
#items:
#- key: master.start
#path: start.sh
#- key: master.stop
#path: stop.sh
#- key: mysql.sql
#path: mysql.sql
- name: config
configMap:
name: cloudera-config
items:
- key: config.ini
path: config.ini
---
apiVersion: v1
kind: Service
metadata:
name: master-svc
namespace: cloudera
labels:
name: master-svc
app: cloudera
spec:
type: ClusterIP
clusterIP: None
ports:
- name: agent
port: 9000
protocol: TCP
targetPort: 9000
- name: server
port: 7182
protocol: TCP
targetPort: 7182
- name: parcel
port: 7191
protocol: TCP
targetPort: 7191
- name: parcel-ssl
port: 4434
protocol: TCP
targetPort: 4434
- name: ui
port: 7180
protocol: TCP
targetPort: 7180
selector:
name: master
app: cloudera
---
apiVersion: v1
kind: Service
metadata:
name: master-external
namespace: cloudera
labels:
name: master-external
app: cloudera
spec:
type: ClusterIP
ports:
- name: ui
port: 7180
protocol: TCP
targetPort: 7180
selector:
name: master
app: cloudera
---
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
name: agent-pdb
namespace: cloudera
labels:
name: agent-pdb
app: cloudera
spec:
selector:
matchLabels:
name: agent
app: cloudera
maxUnavailable: 1
---
apiVersion: v1
kind: Service
metadata:
name: agent-svc
namespace: cloudera
labels:
name: agent-svc
app: cloudera
spec:
type: ClusterIP
clusterIP: None
ports:
- name: agent
port: 9000
protocol: TCP
targetPort: 9000
- name: server
port: 7182
protocol: TCP
targetPort: 7182
- name: parcel
port: 7191
protocol: TCP
targetPort: 7191
- name: parcel-ssl
port: 4434
protocol: TCP
targetPort: 4434
- name: parcel-ssl2
port: 4433
protocol: TCP
targetPort: 4433
selector:
name: agent
app: cloudera
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: agent
namespace: cloudera
labels:
name: agent-sts
app: cloudera
spec:
selector:
matchLabels:
name: agent
app: cloudera
serviceName: agent-svc
updateStrategy:
type: RollingUpdate
podManagementPolicy: OrderedReady
replicas: 3
revisionHistoryLimit: 2
template:
metadata:
name: cagent
namespace: cloudera
labels:
name: agent
app: cloudera
spec:
tolerations:
- effect: NoSchedule
key: node-role.kubernetes.io/master
restartPolicy: Always
serviceAccountName: cloudera-sa
automountServiceAccountToken: true
containers:
- name: agent
image: registry-vpc.cn-hangzhou.aliyuncs.com/huaching_prod/cloudera-node:5.14.2
# imagePullPolicy: IfNotPresent
resources:
limits:
memory: "4096Mi"
cpu: "1000m"
lifecycle:
preStop:
exec:
command: ["/bin/bash","-c","/cloudera-init/run/stop.sh"]
volumeMounts:
- name: repo
mountPath: /opt/cloudera/parcel-repo/
- name: lib
mountPath: /opt/cm/lib/cloudera-scm-agent/
- name: config
mountPath: /opt/cm/etc/cloudera-scm-agent/
ports:
- containerPort: 9000
name: agent
- containerPort: 7182
name: server
- containerPort: 7191
name: parcel
- containerPort: 4434
name: parcel-ssl
- containerPort: 4433
name: parcel-ssl2
securityContext:
privileged: true
imagePullSecrets:
- name: registrykey-vpc
volumes:
- name: config
configMap:
name: cloudera-config
items:
- key: config.ini
path: config.ini
- key: cron.tab
path: cron.tab
- name: repo
nfs:
server: 074ca49d80-ak47.cn-hangzhou.nas.aliyuncs.com
path: /pv/cloudera/repo/
volumeClaimTemplates:
- metadata:
name: lib
namespace: cloudera
spec:
#volumeName: lib
volumeMode: Filesystem
accessModes: [ "ReadWriteOnce" ]
storageClassName: cloudera-storage
resources:
requests:
storage: 20Gi
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: cdh-master-ing
namespace: cloudera
spec:
rules:
- host: cdh.docs.aliyun.com
http:
paths:
- backend:
serviceName: master-external
servicePort: 7180
注意事项
- 创建
namespace cloudera - 镜像来源已经在上方说明了,可以自己去
rebuild - 默认全部不会启动
command脚本可以看出 - 启动流程进入
Master-deploy去执行start.sh启动，根据机器情况，启动时间不等，期间可以用netstat -tlunp查看端口是否占用来验证启动成功与否. CDH需要用到Kubernetes的特权模式,相关细节请查关键字Kubernetes securityContext-
部分界面如下：
-
服务界面
-
PVC 界面
-
CDH 节点界面
-
节点服务运行情况。
感谢 https://github.com/windawings
转载请注明出处，本文采用 CC4.0 协议授权