clickhouse 叢集安裝部署文件

一、環境準備

CentOS系統三臺測試機

Host： 192.168.2.211、 192.168.2.212、 192.168.2.213

二、RPM安裝包安裝

# 前提需要zookeeper環境，如沒有需要安裝(因為之前就有，所以就講解如何搭建kafka叢集)
# 分別在三臺機器上root使用者下安裝clickhouse-server、clickhouse-client

sudo yum install -y yum-utils

sudo yum-config-manager --add-repo https://packages.clickhouse.com/rpm/clickhouse.repo

sudo yum install -y clickhouse-server clickhouse-client
 

三、配置

clickhouse-server、clickhouse-client version 21.12.2.17

單機版

1、修改clickhouse-server的配置檔案config.xml

[clickhouse@node2 clickhouse-server]$ vim /etc/clickhouse-server/config.xml  

<!--因為9000埠被其他服務佔用，故把埠tcp埠修改1200，為了之後管理方便就把相關的埠號都改成一個範圍內的埠號，方便後期維護使用-->
<!-- Port for HTTP API. See also 'https_port' for secure connections.
         This interface is also used by ODBC and JDBC drivers (DataGrip, Dbeaver, ...)
         and by most of web interfaces (embedded UI, Grafana, Redash, ...).
      -->
	<!--http網址訪問埠-->
    <http_port>1199</http_port>

    <!-- Port for interaction by native protocol with:
         - clickhouse-client and other native ClickHouse tools (clickhouse-benchmark, clickhouse-copier);
         - clickhouse-server with other clickhouse-servers for distributed query processing;
         - ClickHouse drivers and applications supporting native protocol
         (this protocol is also informally called as "the TCP protocol");
         See also 'tcp_port_secure' for secure connections.
    -->
	<!--clickhouse-client客戶端監聽埠-->
    <tcp_port>1200</tcp_port>

    <!-- Compatibility with MySQL protocol.
         ClickHouse will pretend to be MySQL for applications connecting to this port.
    -->
	<!--監聽mysql埠-->
    <mysql_port>1201</mysql_port>

    <!-- Compatibility with PostgreSQL protocol.
         ClickHouse will pretend to be PostgreSQL for applications connecting to this port.
    -->
    <postgresql_port>1202</postgresql_port>
    <!-- Port for communication between replicas. Used for data exchange.
         It provides low-level data access between servers.
         This port should not be accessible from untrusted networks.
         See also 'interserver_http_credentials'.
         Data transferred over connections to this port should not go through untrusted networks.
         See also 'interserver_https_port'.
      -->
    <interserver_http_port>1203</interserver_http_port>

...
...
...
<!--將註釋掉的這行放開，作用是可以通過遠端伺服器訪問服務-->
<listen_host>::</listen_host>

...
...
...
<!--將原始的全部註釋掉-->
<!-- <remote_servers> -->
        <!-- Test only shard config for testing distributed storage -->
        <!-- <test_shard_localhost> -->
            <!-- Inter-server per-cluster secret for Distributed queries
                 default: no secret (no authentication will be performed)

                 If set, then Distributed queries will be validated on shards, so at least:
                 - such cluster should exist on the shard,
                 - such cluster should have the same secret.

                 And also (and which is more important), the initial_user will
                 be used as current user for the query.

                 Right now the protocol is pretty simple and it only takes into account:
                 - cluster name
                 - query

                 Also it will be nice if the following will be implemented:
                 - source hostname (see interserver_http_host), but then it will depends from DNS,
                   it can use IP address instead, but then the you need to get correct on the initiator node.
                 - target hostname / ip address (same notes as for source hostname)
                 - time-based security tokens
            -->
            <!-- <secret></secret> -->

            <!-- <shard> -->
			...
			...
<!--</remote_servers>-->



 

修改到此處單機版的clickhouse就安裝完成了。可以測試啟動clickhouse-server 和clickhouse-client

啟動clickhouse-server

[root@master ~]# systemctl start clickhouse-server
[root@master ~]# systemctl status clickhouse-server 
● clickhouse-server.service - ClickHouse Server (analytic DBMS for big data)
   Loaded: loaded (/etc/systemd/system/clickhouse-server.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2022-03-10 17:13:21 CST; 6min ago
 Main PID: 12290 (clckhouse-watch)
   CGroup: /system.slice/clickhouse-server.service
           ├─12290 clickhouse-watchdog --config=/etc/clickhouse-server/config.xml --pid-file=/run/clickhouse-server/clickhouse-server.pid
           └─12291 /usr/bin/clickhouse-server --config=/etc/clickhouse-server/config.xml --pid-file=/run/clickhouse-server/clickhouse-server.pid

Mar 10 17:13:21 master systemd[1]: Started ClickHouse Server (analytic DBMS for big data).
Mar 10 17:13:21 master systemd[1]: Starting ClickHouse Server (analytic DBMS for big data)...
Mar 10 17:13:21 master clickhouse-server[12290]: Processing configuration file '/etc/clickhouse-server/config.xml'.
Mar 10 17:13:21 master clickhouse-server[12290]: Logging trace to /var/log/clickhouse-server/clickhouse-server.log
Mar 10 17:13:21 master clickhouse-server[12290]: Logging errors to /var/log/clickhouse-server/clickhouse-server.err.log
Mar 10 17:13:22 master clickhouse-server[12290]: Processing configuration file '/etc/clickhouse-server/config.xml'.
Mar 10 17:13:22 master clickhouse-server[12290]: Saved preprocessed configuration to '/var/lib/clickhouse/preprocessed_configs/config.xml'.
Mar 10 17:13:22 master clickhouse-server[12290]: Processing configuration file '/etc/clickhouse-server/users.xml'.
Mar 10 17:13:22 master clickhouse-server[12290]: Saved preprocessed configuration to '/var/lib/clickhouse/preprocessed_configs/users.xml'.

#看到active(running)就證明 serve啟動完成

systemctl start clickhouse-server  #啟動
systemctl status clickhouse-server #狀態
systemctl stop clickhouse-server   #停止
 

啟動clickhouse-client

#接著啟動client
#因為我在config.xml的配置檔案修改過<tcp_port>， 故在啟動的時候需要指定新的port

[root@master ~]# clickhouse-client --port 1200
ClickHouse client version 21.11.7.9 (official build).
Connecting to localhost:1200 as user default.
Connected to ClickHouse server version 21.11.7 revision 54450.

master :) 

#到此處就client也啟動成功了

叢集版

在單機版的基礎上新增以下配置

1、修改clickhouse-server的配置檔案config.xml

<!--新增-->
    <!--ck叢集節點-->
    <remote_servers>
        <!-- 叢集名稱，可以修改-->
        <test_ck_cluster>
            <!-- 配置三個分片, 每個分片對應一臺機器, 為每個分片配置一個副本 -->
            <!--分片1-->
            <shard>
                <!-- 權重：新增一條資料的時候有多大的概率落入該分片，預設值：1 -->
                <weight>1</weight>
                <internal_replication>true</internal_replication>
                <replica>
                    <host>192.168.1.211</host>
                    <port>1200</port>
                    <user>default</user>
                    <password></password>
                   <compression>true</compression>
                </replica>
            </shard>
            <!--分片2-->
            <shard>
                <weight>1</weight>
                <internal_replication>true</internal_replication>
                <replica>
                    <host>192.168.1.212</host>
                    <port>1200</port>
                    <user>default</user>
                    <password></password>
                   <compression>true</compression>
                </replica>
            </shard>
                <!--分片3-->
            <shard>
               <weight>1</weight>
                <internal_replication>false</internal_replication>
                <replica>
                    <host>192.168.1.213</host>
                    <port>1200</port>
                    <user>default</user>
                    <password></password>
                   <compression>true</compression>
                </replica>
            </shard>
        </test_ck_cluster>
    </remote_servers>

    <!--zookeeper相關配置-->
    <zookeeper>
        <node index="1">
            <host>192.168.1.211</host>
            <port>2181</port>
        </node>
        <node index="2">
            <host>192.168.1.212</host>
            <port>2181</port>
        </node>
        <node index="3">
            <host>192.168.1.213</host>
            <port>2181</port>
        </node>
    </zookeeper>

    <macros>
        <replica>192.168.1.211</replica> <!--當前節點主機名-->
    </macros>

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

    <!--壓縮相關配置-->
    <clickhouse_compression>
        <case>
            <min_part_size>10000000000</min_part_size>
            <min_part_size_ratio>0.01</min_part_size_ratio>
            <method>lz4</method> <!--壓縮演算法lz4壓縮比zstd快, 更佔磁碟-->
        </case>
    </clickhouse_compression>

三個節點配置檔案的區別

<!-- 每臺機器對應各自的主機名 -->
	<macros>
        <replica>192.168.1.211</replica> <!--當前節點主機名-->
    </macros>

全部配置完成後，分別各自啟動每個節點的clickhouse-server

然後隨機在一臺機器上啟動client進行測試

測試語句

select cluster,shard_num,replica_num,host_name,port,user from system.clusters;

結果

[root@master ~]# clickhouse-client --port
Bad arguments: the required argument for option '--port' is missing
[root@master ~]# clickhouse-client --port 1200
ClickHouse client version 21.11.7.9 (official build).
Connecting to localhost:1200 as user default.
Connected to ClickHouse server version 21.11.7 revision 54450.

master :) select cluster,shard_num,replica_num,host_name,port,user from system.clusters;

SELECT
    cluster,
    shard_num,
    replica_num,
    host_name,
    port,
    user
FROM system.clusters

Query id: 32df1583-7cf0-4e16-b1f4-13506797925c

┌─cluster─────────┬─shard_num─┬─replica_num─┬─host_name─────┬─port─┬─user────┐
│ test_ck_cluster │         1 │           1 │ 192.168.1.211 │ 1200 │ default │
│ test_ck_cluster │         2 │           1 │ 192.168.1.212 │ 1200 │ default │
│ test_ck_cluster │         3 │           1 │ 192.168.1.213 │ 1200 │ default │
└─────────────────┴───────────┴─────────────┴───────────────┴──────┴─────────┘

3 rows in set. Elapsed: 0.001 sec. 

master :) 

可以看到叢集的資訊了 就OK了。