clickhouse安装教程
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系统配置

/etc/security/limits.conf 这个文件的末尾加入一下内容:

* soft nofile 65536
* hard nofile 65536
* soft nproc 131072
* hard nproc 131072

/etc/security/limits.d/90-nproc.conf 这个文件的末尾加入一下内容:

* soft nofile 65536
* hard nofile 65536
* soft nproc 131072
* hard nproc 131072

重启服务器之后生效,用 ulimit -n 或者 ulimit -a 查看设置结果

修改 /etc/selinux/config 然后重启服务器

SELINUX=disabled

检查CPU是否支持SSE4.2指令集,因为向量化执行需要用到这项特性:

grep -q sse4_2 /proc/cpuinfo && echo "SSE 4.2 supported" || echo "SSE 4.2 not supported"

安装依赖

yum install -y libtool
yum install -y *unixODBC*

安装clickhouse单机

yum安装:

yum install yum-utils -y
rpm --import https://repo.clickhouse.tech/CLICKHOUSE-KEY.GPG
yum-config-manager --add-repo https://repo.clickhouse.tech/rpm/clickhouse.repo
yum install clickhouse-server clickhouse-client -y

安装完成后修改配置文件/etc/clickhouse-server/config.xml

<!--为避免与hdfs端口冲突 。需要修改tcp端口,如修改为9977-->
<tcp_port>9977</tcp_port>
<!--删除监听端口的行注释,允许指定主机访问-->
<listen_host>0.0.0.0</listen_host>

配置用户/etc/clickhouse-server/users.xml

   <users>
      <bigdata>
        <password>BigData_2021</password>
        <networks incl="networks" replace="replace">
        <ip>::/0</ip>
        </networks>
        <profile>default</profile>
        <quota>default</quota>
      </bigdata>
    </users>

启动服务端

systemctl start clickhouse-server

安装clickhouse集群

注:如安装clickhouse集群,需先安装并启动zookeeper

安装过程: 省略

如三台服务器的zookeeper均正常启动,则可继续搭建clickhouse集群

启动cluster还需要添加/etc/metrika.xml文件

<yandex>
    <clickhouse_remote_servers>
        <hn_test>
            <shard>
                <internal_replication>true</internal_replication>
                <replica>
                    <host>IPTV-test-hadoop1</host>
                    <port>9977</port>
                </replica>
            </shard>
            <shard>
                <internal_replication>true</internal_replication>
                <replica>
                    <host>IPTV-test-hadoop2</host>
                    <port>9977</port>
                </replica>
            </shard>
            <shard>
                <internal_replication>true</internal_replication>
                <replica>
                    <host>IPTV-test-hadoop3</host>
                    <port>9977</port>
                </replica>
            </shard>
        </hn_test>
    </clickhouse_remote_servers>

    <!--zookeeper相关配置-->
    <zookeeper-servers>
        <node index="1">
            <host>IPTV-test-hadoop1</host>
            <port>2181</port>
        </node>
        <node index="2">
            <host>IPTV-test-hadoop2</host>
            <port>2181</port>
        </node>
        <node index="3">
            <host>IPTV-test-hadoop3</host>
            <port>2181</port>
        </node>
    </zookeeper-servers>
    
    <!--每台节点不同配置,注意修改-->
    <macros>
        <layer>hn_test</layer>
        <shard>hn_test_01</shard>
        <replica>IPTV-test-hadoop1</replica>
    </macros>

    <networks>
        <ip>::/0</ip>
    </networks>

    <clickhouse_compression>
        <case>
            <min_part_size>10000000000</min_part_size>
            <min_part_size_ratio>0.01</min_part_size_ratio>
            <method>lz4</method>
        </case>
    </clickhouse_compression>
</yandex>

同步到以下其他两台:

/etc/clickhouse-server/config.xml
/etc/clickhouse-server/users.xml
/etc/metrika.xml

添加完metrik.xml 重启clickhouse-server,登录客户端,通过system.cluster表可以查看集群信息

客户端登录命令

TZ=Asia/Shanghai clickhouse-client --port=9977 --user=bigdata --password=BigData_2021

ClickHouse总结

配置文件路径:

/etc/clickhouse-server/config.xml
/etc/clickhouse-server/users.xml
/etc/metrika.xml

日志文件路径:

/var/log/clickhouse-server/

表信息路径、元数据存储目录:

/var/lib/clickhouse/metadata/

表数据路径:

/var/lib/clickhouse/data/
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