CentOS6.10上离线安装ClickHouse19.9.5.36并修改默认数据存储目录

背景

在一台装有 CentOS6.10 操作系统的主机上安装 ClickHouse (其实本来计划是先安装 Docker ,然后在 Docker 中快速启动 ClickHouse 的,但是由于 CentOS6Docker 支持不好,就直接在系统上装 ClickHouse 吧);但是在操作系统上按照 ClickHouse 官方的命令: curl https://clickhouse.com/ | sh 安装后,启动报错:

./clickhouse: /lib64/libc.so.6: version `GLIBC_2.14’ not found (required by ./clickhouse)

网上一查:出现"libc.so.6: version GLIBC_2.14 not found"问题,是由于 glibc 版本过低,需要升级 glibc 。由于CentOS系统RPM源目前 glibc 最高版本是2.12,所以只能采用源码升级,一顿操作后,查看系统glibc支持的版本 strings /lib64/libc.so.6 |grep GLIBC ,有了GLIBC_2.14;折腾了半天,可是依然无法成功启动 ClickHouse

最后选择离线安装低版本 ClickHouse19.9.5.36 ;此外,系统还挂载了一个600G的数据盘,就修改 ClickHouse 的默认数据存储目录,将数据和日志放到数据盘中;配置了远程访问与密码,通过命令行客户端建立连接,最后建库建表。

CentOS6.10上离线安装ClickHouse19.9.5.36并修改默认数据存储目录_第1张图片

系统环境

[root@iiot ~]# uname -a
Linux iiot 2.6.32-754.15.3.el6.x86_64 #1 SMP Tue Jun 18 16:25:32 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
[root@iiot ~]# cat /etc/redhat-release 
CentOS release 6.10 (Final)
[root@iiot ~]# cat /proc/version 
Linux version 2.6.32-754.15.3.el6.x86_64 ([email protected]) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC) ) #1 SMP Tue Jun 18 16:25:32 UTC 2019

下载安装

  • 下载

https://packagecloud.io/app/altinity/clickhouse/search?q=&filter=all&dist=el%2F6

  • 安装
rpm -ivh clickhouse-server-common-19.9.5.36-1.el6.x86_64.rpm
rpm -ivh clickhouse-server-19.9.5.36-1.el6.x86_64.rpm  --force --nodeps
rpm -ivh clickhouse-client-19.9.5.36-1.el6.x86_64.rpm  --force --nodeps
rpm -ivh clickhouse-common-static-19.9.5.36-1.el6.x86_64.rpm   --force --nodeps
  • 启动
# 啊呜,启动报错
[root@iiot mpp]# service clickhouse-server start
Start clickhouse-server service: /usr/bin/clickhouse-extract-from-config: error while loading shared libraries: libicui18n.so.42: cannot open shared object file: No such file or directory
Cannot obtain value of path from config file: /etc/clickhouse-server/config.xml

下载 libiculibicu-devel 并按照,解决上述报错: error while loading shared libraries: libicui18n.so.42

wget http://mirrors.aliyun.com/centos-vault/6.10/os/x86_64/Packages/libicu-4.2.1-14.el6.x86_64.rpm
wget http://mirrors.aliyun.com/centos-vault/6.10/os/x86_64/Packages/libicu-devel-4.2.1-14.el6.x86_64.rpm

rpm -ivh libicu-4.2.1-14.el6.x86_64.rpm
rpm -ivh libicu-devel-4.2.1-14.el6.x86_64.rpm
# 启动成功
[root@iiot mpp]# service clickhouse-server start
Start clickhouse-server service: Path to data directory in /etc/clickhouse-server/config.xml: /var/lib/clickhouse/
DONE

# 查看状态,竟然停止了。。
[root@iiot mpp]# service clickhouse-server status
clickhouse-server: process unexpectedly terminated

# 到日志目录看下啥原因
[root@iiot clickhouse-server]# cd /var/log/clickhouse-server/
[root@iiot clickhouse-server]# ll
总用量 8
-rw-r----- 1 clickhouse clickhouse    0 67 11:22 clickhouse-server.err.log
-rw-r----- 1 clickhouse clickhouse 3190 67 11:35 clickhouse-server.log
-rw-r----- 1 clickhouse clickhouse 1969 67 11:34 stderr.log
-rw-r----- 1 clickhouse clickhouse    0 67 11:22 stdout.log

# 原来是服务器时区问题
[root@iiot clickhouse-server]# tailf clickhouse-server.log
Poco::Exception. Code: 1000, e.code() = 0, e.displayText() = Exception: Could not determine local time zone: custom time zone file used. (version 19.9.5.36)

# 解决ClickHouse时区报错问题
[root@iiot ~]# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

# 重启ClickHouse后,连接8123端口,成功~
[root@iiot ~]# curl localhost:8123
Ok.

[root@iiot ~]# service clickhouse-server status
clickhouse-server service is running

# 停止ClickHouse服务
[root@iiot ~]# service clickhouse-server stop
Stop clickhouse-server service: 
DONE

修改默认的数据和日志目录

ClickHouse 默认数据目录: /var/lib/clickhouse/
ClickHouse 默认日志目录: /var/log/clickhouse-server/

挂载了一个600G的数据盘(在 /mnt 下),将 ClickHouse 的数据和日志放到数据盘中。

[root@iiot ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        40G  3.8G   34G  11% /
tmpfs           3.9G     0  3.9G   0% /dev/shm
/dev/vdb1       591G   16G  546G   3% /mnt
# 修改clickhouse的默认数据目录和日志目录
[root@iiot ~]# cd /mnt/mpp
[root@iiot mpp]# mkdir -p clickhouse/data
[root@iiot mpp]# mkdir -p clickhouse/log
[root@iiot mpp]# mv /var/lib/clickhouse/ /mnt/mpp/clickhouse/data/
[root@iiot mpp]# cd /var/lib/
[root@iiot lib]# ln -s /mnt/mpp/clickhouse/data/clickhouse/ .
[root@iiot lib]# 
[root@iiot lib]# mv /var/log/clickhouse-server/ /mnt/mpp/clickhouse/log/
[root@iiot lib]# cd /var/log/
[root@iiot log]# ln -s /mnt/mpp/clickhouse/log/clickhouse-server/ .
[root@iiot log]# 
[root@iiot log]# chown -Rc clickhouse:clickhouse /mnt/mpp/clickhouse/data/clickhouse/
[root@iiot log]# chown -Rc clickhouse:clickhouse /mnt/mpp/clickhouse/log/clickhouse-server/

重启 ClickHouse 服务,启动成功。

开启远程访问并配置密码

  • 开启远程访问
# 放开注释,当然记得开放安全组,默认端口8123
[root@iiot clickhouse-server]# vi /etc/clickhouse-server/config.xml
70     <listen_host>::</listen_host
  • 配置密码

安全意识一定要上来,既然开启了远程访问,安全配套要跟上(实际生产不建议开放数据库端口)。

# 这里使用明文密码,还可以通过sha256对密码进行加密配置
[root@iiot clickhouse-server]# vi /etc/clickhouse-server/users.xml
<!-- If user name was not specified, 'default' user is used. -->
47             <password>CK666%</password>

# 重启服务
[root@iiot clickhouse-server]# service clickhouse-server restart
Stop clickhouse-server service: DONE
Start clickhouse-server service: Path to data directory in /etc/clickhouse-server/config.xml: /var/lib/clickhouse/
DONE

建库建表

ClickHouse 支持类 SQL 语句的操作,所以如果熟悉关系型数据库,可以很快上手(不过,与 MySQL 不同, ClickHouse 中的更新和删除语句不太一样,这在后续通过SpringBoot和MyBatisPlus集成 ClickHouse 后会遇到,并在下一篇文章中解决)。

-- 通过命令行客户端工具无密码连接(没配置密码可以这样连)
[root@iiot ~]# clickhouse-client

-- 通过命令行客户端工具带密码连接(-m参数含义:允许执行多行sql)
[root@iiot ~]# clickhouse-client --password -m

-- 建库
CREATE DATABASE IF NOT EXISTS helloworld;

-- 建表
CREATE TABLE helloworld.my_first_table
(
    user_id UInt32,
    message String,
    timestamp DateTime,
    metric Float32
)
ENGINE = MergeTree()
PRIMARY KEY (user_id, timestamp);
Code: 36. DB::Exception: Received from localhost:9000, ::1. DB::Exception: You must provide an ORDER BY expression in the table definition. If you don't want this table to be sorted, use ORDER BY tuple(). 

与高版本不同,在 ClickHouse19 中建表语句还要求有 ORDER BY 。。

CREATE TABLE helloworld.my_first_table
(
    user_id UInt32,
    message String,
    timestamp DateTime,
    metric Float32
)
ENGINE = MergeTree()
ORDER BY (user_id)
PRIMARY KEY (user_id, timestamp);
Code: 36. DB::Exception: Received from localhost:9000, ::1. DB::Exception: Primary key must be a prefix of the sorting key, but its length: 2 is greater than the sorting key length: 1. 

CREATE TABLE helloworld.my_first_table
(
    user_id UInt32,
    message String,
    timestamp DateTime,
    metric Float32
)
ENGINE = MergeTree()
ORDER BY (user_id, timestamp)
PRIMARY KEY (user_id, timestamp);

终于OK了。 ClickHouse 服务成功启动后,后续就可以把我们关系型数据库中的大量数据迁移至 ClickHouse ,体验下这款以著称的联机分析( OLAP )的列式数据库管理系统。

Note: 高版本的 ClickHouse 有个 PlayGround 端点: http://IP:8123/play ,可以直接通过 Web 的方式与 OLAP 数据库进行交互查询;本次用的 ClickHouse19.9.5.36 并没有。

Reference

  • https://www.codenong.com/cs109197835/

If you have any questions or any bugs are found, please feel free to contact me.

Your comments and suggestions are welcome!

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