Docker addresses three solutions to the problem of inconsistency between container time and host time
- 2020-05-30 21:24:07
The Docker container time does not correspond to the host time
Check the time with the date command
View host time
[root@localhost ~]# date 2016 years 07 month 27 day week 3 22:42:44 CST
View container time
root@b43340ecf5ef:/#date Wed Jul 27 14:43:31 UTC 2016
As you can see, they were eight hours apart.
CST (China Shanghai Time, zone 8 time)
UTC (Coordinated Universal Time, standard time)
So, these two times should actually be 8 hours apart. (bluer: so no container has been set up, so the time difference between 1 and the host is 8h)
Therefore, the time zone must be aligned.
localtime for Shared hosts (method 1)
Specify startup parameters when creating the container, mount the localtime file into the container, and ensure that the time zone used by both is 1.
docker run --name <name> -v /etc/localtime:/etc/localtime:ro ....
Copy localtime of the host (method 2)
docker cp /etc/localtime: The container ID or NAME 】 /etc/localtime
When you're done, check the current time through the date command.
However, the time of the application running in the container is not always updated, such as the MySQL service running in the container. After the update time, check the time of MySQL through sql
select now() from dual;
You can see that the time has not changed.
At this point, you must restart the mysql service or the Docker container so that mysql can read the time after the change.
Create a custom dockerfile (method 3)
The dockerfile file is created with nothing but a custom time format and time zone for the image.
FROM redis FROM tomcat ENV CATALINA_HOME /usr/local/tomcat # Set the time zone RUN /bin/cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \ && echo 'Asia/Shanghai' >/etc/timezone \
Once saved, use the docker build command to generate the image for use.
Thank you for reading, I hope to help you, thank you for your support of this site!