clickhouse (9, metabase link and time zone configuration)

Install metabase

# 选用docker方式，下载镜像
docker pull metabase/metabase
# 创建插件目录
mkdir -p /data/docker/metabase/plugins
# 启动容器，将目录挂载到容器/tmp 目录下
docker run -d -v /data/docker/metabase/plugins:/tmp  \
			--name metabase  \
			metabase/metabase

Configure clickhouse driver

# 进入/data/docker/metabase/plugins 目录，下载clickhouse驱动包
wget https://github.com/enqueue/metabase-clickhouse-driver/releases/download/0.7.2/clickhouse.metabase-driver.jar
# 进入容器 
docker exec -it ${容器id} bash
# 移动jar到/plugins目录，之前安装github方式直接mount plugins，启动发现目录为空，所以改成其他目录导入形式
cp /tmp/clickhouse.metabase-driver.jar /plugins
# 退出重启容器
docker restart ${容器id}

After logging in at localhost:3000 , I found the driver of clickhouse:

Metabase time zone configuration

First of all, we must ensure that the time configuration of the clickhouse server is normal. /etc/clickhouse-server/config.xmlTime zone configuration in.

<timezone>Asia/Shanghai</timezone>

Link to clickhouse service and execute to select now();see if it is consistent with the current time.
Next, look at the time zone configuration in metabase in the Administrator -> Basic Settings -> Time Zone Report. It can be configured in China Asia/Hong_Kong, but unfortunately it does not take effect in ck. You can write SQL queries through the upper right corner of the metabase homepage.

select now();

So I started to look at the data source configuration of clickhouse. You can see that the link clickhouse uses the jdbc method, and the jdbc url theory can take parameters.

So I tried to configure the general parameters serverTimeZone=Asia/Shanghaiand found no effect. Then check the official ck documentation and find that the ck time zone requires --use_client_time_zonethe parameters of the client . So in the metabase configuration use_client_time_zone=Asia/Shanghai, an exception was thrown:

one of use_server_time_zone or use_time_zone must be enabled

This understanding on the strange, literal understanding is use_time_zoneand use_server_time_zonemust be a use of it, why has a configuration error. Try to configure another one use_time_zone, the same error is reported. Although I just arrived inexplicable, but seeing such a prompt, I feel that this parameter configuration is at least effective on the link. After trying to configure at the same time, finally passed. The UTC+8sum here Asia/Shanghaiis equivalent.

use_time_zone=UTC+8&use_server_time_zone=UTC+8

After the interface test select now();, the query database DateTime format column time shows normal.