23.ClickHouse分布式集群部署

23.1.集群部署

23.1.1.準(zhǔn)備工作

節(jié)點(diǎn)規(guī)劃：

主機(jī)名IP地址分片副本

clickhouse1	192.168.106.103	shard1	副本1
clickhouse2	192.168.106.104	shard1	副本2
clickhouse3	192.168.106.105	shard2	副本1
clickhouse4	192.168.106.106	shard2	副本2

規(guī)劃4個(gè)節(jié)點(diǎn)， 2個(gè)分片， 每個(gè)分片2個(gè)副本。 分片1的副本在主機(jī)clickhouse1和clickhouse2上， 2分片的副本在主機(jī)clickhouse3和clickhouse4上。

操作系統(tǒng)準(zhǔn)備工作：
（1）、修改主機(jī)名
hostname按照上面主機(jī)名進(jìn)行修改。
（2）、關(guān)閉防火墻、selinux等。

關(guān)閉防火墻： systemctl stop firewalld.service systemctl disable firewalld.service systemctl is-enabled firewalld.serviceselinux的配置： vim /etc/sysconfig/selinux SELINUX=enforcing 改為 SELINUX=disabled檢查SELinux的狀態(tài) [root@localhost etc]# getenforce Disabled [root@localhost etc]#

（3）、配置/etc/hosts
必須在/etc/hosts配置主機(jī)名和ip地址映射關(guān)系， 否則副本之間的數(shù)據(jù)不能同步。

[root@clickhouse1 ~]# cat /etc/hosts 192.168.106.103 clickhouse1 192.168.106.104 clickhouse2 192.168.106.105 clickhouse3 192.168.106.106 clickhouse4 [root@clickhouse1 ~]#

2 安裝配置zookeeper
下載zookeeper,zookeeper版本要求3.4.5以上。
將conf目錄下的zoo_sample.cfg復(fù)制一份，命名為：zoo.cfg
環(huán)境配置：

export ZOOKEEPER_HOME=/root/apache-zookeeper-3.6.2-bin export PATH=$PATH:$ZOOKEEPER_HOME/bin

Zookeeper的配置：

# The number of milliseconds of each tick tickTime=2000 # The number of ticks that the initial # synchronization phase can take initLimit=10 # The number of ticks that can pass between # sending a request and getting an acknowledgement syncLimit=5 # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. dataDir=/root/apache-zookeeper-3.6.2-bin/data dataLogDir=/root/apache-zookeeper-3.6.2-bin/log # the port at which the clients will connect clientPort=2181 # the maximum number of client connections. # increase this if you need to handle more clients #maxClientCnxns=60 # # Be sure to read the maintenance section of the # administrator guide before turning on autopurge. # # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance # # The number of snapshots to retain in dataDir #autopurge.snapRetainCount=3 # Purge task interval in hours # Set to "0" to disable auto purge feature #autopurge.purgeInterval=1## Metrics Providers # # https://prometheus.io Metrics Exporter #metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider #metricsProvider.httpPort=7000 #metricsProvider.exportJvmInfo=true

上面配置目錄需要手工創(chuàng)建。
然后啟動(dòng)zookeeper即可。
啟動(dòng)命令：

$ZOOKEEPER_HOME/bin/zkServer.sh start

3 在所有的主機(jī)安裝clickhouse
4 修改clickhouse的網(wǎng)絡(luò)相關(guān)配置
修改配置文件：/etc/clickhouse-server/config.xml
打開以下注釋，并做相關(guān)修改：

<listen_host>::1</listen_host> <listen_host>0.0.0.0</listen_host>

clickhouse1上的修改如下：

<listen_host>::1</listen_host> <listen_host>192.168.106.103</listen_host>

Clickhouse2上的修改如下：

<listen_host>::1</listen_host> <listen_host>192.168.106.104</listen_host>

Clickhouse3上的修改如下：

<listen_host>::1</listen_host> <listen_host>192.168.106.105</listen_host>

Clickhouse4上的修改如下：

<listen_host>::1</listen_host> <listen_host>192.168.106.106</listen_host>

5 增加配置文件：/etc/metrika.xml
clickhouse1的配置如下：

<?xml version="1.0" encoding="utf-8"?><yandex> <clickhouse_remote_servers> <mycluster> <shard> <internal_replication>true</internal_replication> <replica> <host>192.168.106.103</host> <port>9000</port> </replica> <replica> <host>192.168.106.104</host> <port>9000</port> </replica> </shard> <shard> <internal_replication>true</internal_replication> <replica> <host>192.168.106.105</host> <port>9000</port> </replica> <replica> <host>192.168.106.106</host> <port>9000</port> </replica> </shard> </mycluster> </clickhouse_remote_servers> <zookeeper-servers> <node index="1"> <host>192.168.106.103</host> <port>2181</port> </node> </zookeeper-servers> <macros> <layer>01</layer> <shard>01</shard> <replica>192.168.106.103</replica> </macros> </yandex>

Clickhouse2的配置如下：

<?xml version="1.0" encoding="utf-8"?><yandex> <clickhouse_remote_servers> <mycluster> <shard> <internal_replication>true</internal_replication> <replica> <host>192.168.106.103</host> <port>9000</port> </replica> <replica> <host>192.168.106.104</host> <port>9000</port> </replica> </shard> <shard> <internal_replication>true</internal_replication> <replica> <host>192.168.106.105</host> <port>9000</port> </replica> <replica> <host>192.168.106.106</host> <port>9000</port> </replica> </shard> </mycluster> </clickhouse_remote_servers> <zookeeper-servers> <node index="1"> <host>192.168.106.103</host> <port>2181</port> </node> </zookeeper-servers> <macros> <layer>01</layer> <shard>01</shard> <replica>192.168.106.104</replica></macros> </yandex>

Clickhouse3的配置如下：

<?xml version="1.0" encoding="utf-8"?><yandex> <clickhouse_remote_servers> <mycluster> <shard> <internal_replication>true</internal_replication> <replica> <host>192.168.106.103</host> <port>9000</port> </replica> <replica> <host>192.168.106.104</host> <port>9000</port> </replica> </shard> <shard> <internal_replication>true</internal_replication> <replica> <host>192.168.106.105</host> <port>9000</port> </replica> <replica> <host>192.168.106.106</host> <port>9000</port> </replica> </shard> </mycluster> </clickhouse_remote_servers> <zookeeper-servers> <node index="1"> <host>192.168.106.103</host> <port>2181</port> </node> </zookeeper-servers> <macros> <layer>01</layer> <shard>02</shard> <replica>192.168.106.105</replica> </macros> </yandex>

Clickhouse4的配置如下：

<?xml version="1.0" encoding="utf-8"?><yandex> <clickhouse_remote_servers> <mycluster> <shard> <internal_replication>true</internal_replication> <replica> <host>192.168.106.103</host> <port>9000</port> </replica> <replica> <host>192.168.106.104</host> <port>9000</port> </replica> </shard> <shard> <internal_replication>true</internal_replication> <replica> <host>192.168.106.105</host> <port>9000</port> </replica> <replica> <host>192.168.106.106</host> <port>9000</port> </replica> </shard> </mycluster> </clickhouse_remote_servers> <zookeeper-servers> <node index="1"> <host>192.168.106.103</host> <port>2181</port> </node> </zookeeper-servers> <macros> <layer>01</layer> <shard>02</shard> <replica>192.168.106.106</replica> </macros> </yandex>

其中如下這段配置在每個(gè)節(jié)點(diǎn)是不相同的：

<macros> <layer>01</layer> <shard>01</shard> <replica>192.168.106.103</replica> </macros>

layer表示分層， shard表示分片的編號(hào)， 按照配置順序從1開始。這里的01表示第一個(gè)分片。 replica配置副本的標(biāo)識(shí)， 這里配置為本機(jī)的主機(jī)名。 使用這三個(gè)參數(shù)可以唯一表示一個(gè)副本分片。 這里表示layer為01的分片1的副本，副本標(biāo)識(shí)：192.168.106.103。

配置完成后， 在每個(gè)節(jié)點(diǎn)啟動(dòng)ClickHouse服務(wù)。
systemctl restart clickhouse-server

5 查看系統(tǒng)表

clickhouse1 :) select * from system.clusters where cluster='mycluster';SELECT * FROM system.clusters WHERE cluster = 'mycluster'┌─cluster───┬─shard_num─┬─shard_weight─┬─replica_num─┬─host_name───────┬─host_address────┬─port─┬─is_local─┬─user────┬─default_database─┬─errors_count─┬─estimated_recovery_time─┐ │ mycluster │ 1 │ 1 │ 1 │ 192.168.106.103 │ 192.168.106.103 │ 9000 │ 1 │ default │ │ 0 │ 0 │ │ mycluster │ 1 │ 1 │ 2 │ 192.168.106.104 │ 192.168.106.104 │ 9000 │ 0 │ default │ │ 0 │ 0 │ │ mycluster │ 2 │ 1 │ 1 │ 192.168.106.105 │ 192.168.106.105 │ 9000 │ 0 │ default │ │ 0 │ 0 │ │ mycluster │ 2 │ 1 │ 2 │ 192.168.106.106 │ 192.168.106.106 │ 9000 │ 0 │ default │ │ 0 │ 0 │ └───────────┴───────────┴──────────────┴─────────────┴─────────────────┴─────────────────┴──────┴──────────┴─────────┴──────────────────┴──────────────┴─────────────────────────┘4 rows in set. Elapsed: 0.005 sec. clickhouse1 :)

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