一、单机部署ClickHouse
1.1、ClickHouse部署前提
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Clickhouse官网为：[https://clickhouse.com/],在官网中可以看到ClickHouse可以基于多种方式安装，rpm安装、tgz安装包安装、docker镜像安装、源码编译安装等
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目前Clickhouse仅支持Linux系统且cpu必须支持SSE4.2指令集，可以通过以下命令查询Linux是否支持：
# 如果服务器不支持SSE4.2指令集，则不能下载预编译安装包，需要通过源码编译特定版本进行安装。
[root@master ~]# grep -q sse4_2 /proc/cpuinfo && echo "SSE 4.2 supported" || echo "SSE 4.2 not supported"
SSE 4.2 supported
1.2、下载ClickHouse安装包
# 选择版本下载，小技巧选择个版本依次这样下载即可
export CK_VERSION=21.9.4.35
curl -O https://repo.clickhouse.tech/tgz/stable/clickhouse-common-static-$CK_VERSION.tgz
curl -O https://repo.clickhouse.tech/tgz/stable/clickhouse-common-static-dbg-$CK_VERSION.tgz
curl -O https://repo.clickhouse.tech/tgz/stable/clickhouse-server-$CK_VERSION.tgz
curl -O https://repo.clickhouse.tech/tgz/stable/clickhouse-client-$CK_VERSION.tgz
1.3、 依次将这四个安装包解压，并且每解压一个，执行一下解压文件夹下的install下的doinst.sh脚本
- 密码：默认密码在/etc/clickhouse-server/users.d/default-password.xml 里，如果忘记了或者想换一个密码，可以删掉default-password.xml，在/etc/clickhouse-server/users.xml中设置新的密码
- clickhouse用户的密码在users.xml，比如你想将default用户的密码设置成123456，可以找到default用户的配置，修改password的配置为123456【
123456 】 - 如果需要将密码加密，clickhouse也支持sha256的方式，修改password_sha256_hex的配置
- 修改完密码之后，重启clickhouse server进程，密码就生效了 【clickhouse restart】
# 解压、运行doinst.sh
tar -zxvf clickhouse-common-static-21.9.4.35.tgz
./clickhouse-common-static-21.9.4.35/install/doinst.sh
tar -zxvf clickhouse-common-static-dbg-21.9.4.35.tgz
./clickhouse-common-static-dbg-21.9.4.35/install/doinst.sh
# 运行 ./clickhouse-server-21.9.4.35/install/doinst.sh 出现以下提示 说密码在/etc/clickhouse-server/users.d
# Password for default user is already specified. To remind or reset, see /etc/clickhouse-server/users.xml and /etc/clickhouse-server/users.d.
# Setting capabilities for clickhouse binary. This is optional.
# 是否本机访问,默认本机 N,当然也可以改配置文件下文有提及
# Allow server to accept connections from the network (default is localhost only), [y/N]:
tar -zxvf clickhouse-server-21.9.4.35.tgz
./clickhouse-server-21.9.4.35/install/doinst.sh
tar -zxvf clickhouse-client-21.9.4.35.tgz
./clickhouse-client-21.9.4.35/install/doinst.sh
1.3、启动
# 查看命令
clickhouse --help
# 启动
[root@master clickhouse]# clickhouse start
chown --recursive clickhouse '/var/run/clickhouse-server/'
Will run su -s /bin/sh 'clickhouse' -c '/usr/bin/clickhouse-server --config-file /etc/clickhouse-server/config.xml --pid-file /var/run/clickhouse-server/clickhouse-server.pid --daemon'
Waiting for server to start
Waiting for server to start
Server started
1.4、连接clickhouse
- clickhouse就简单安装成功了！
- 这是删了/etc/clickhouse-server/users.d/default-password.xml后，在/etc/clickhouse-server/users.xml中设置新的密码
[root@master clickhouse]# clickhouse-client --password
ClickHouse client version 21.9.4.35 (official build).
Password for user (default): # 输入密码123456;
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 21.9.4 revision 54449.
master :) show databases;
SHOW DATABASES
Query id: 98112a6b-004c-4637-8740-9ac82885b0cb
┌─name────┐
│ default │
│ system │
└─────────┘
2 rows in set. Elapsed: 0.006 sec.
master :)
1.5、clickhouse相关目录
# 命令目录
cd /usr/bin
ll |grep clickhouse
# 配置文件目录
cd /etc/clickhouse-server/
# 日志目录
cd /var/log/clickhouse-server/
# 数据文件目录
cd /var/lib/clickhouse/
1.6、允许远程访问
- clickhouse 默认不允许远程访问，需要修改配置文件
- 改为：在浏览器输入服务器ip+8123验证一下能访问即可
cd /etc/clickhouse-server/
# 打开这行的注释
<listen_host>::</listen_host>
# 重启ck
clickhouse restart
# 其他节点访问验证
curl 192.168.1.111:8123
Ok.