Grafana bridge container time different from host time

Grafana-bridge container time is 1 hour behind the host time

# date
Mon Jan 13 09:39:08 PM CET 2025

# podman ps
CONTAINER ID  IMAGE                                    COMMAND               CREATED            STATUS            PORTS                                           NAMES
b8910c688b15  localhost/podman-pause:4.4.1-1676978277                        About an hour ago  Up About an hour  0.0.0.0:4242->4242/tcp, 0.0.0.0:9250->9250/tcp  9391f1192121-infra
977ac01c1de0  localhost/scale_bridge:test_8.0.2_prod   sh -c python3 zim...  About an hour ago  Up About an hour  0.0.0.0:4242->4242/tcp, 0.0.0.0:9250->9250/tcp  bridge-basic-auth-test
346a57e23572  localhost/podman-pause:4.4.1-1676978277                        30 seconds ago     Up 29 seconds     0.0.0.0:4243->4242/tcp, 0.0.0.0:9251->9250/tcp  3b33f10f785b-infra
7b39b67fa0d0  localhost/scale_bridge_arg:1.0_dev       sh -c python zimo...  29 seconds ago     Up 29 seconds     0.0.0.0:4243->4242/tcp, 0.0.0.0:9251->9250/tcp  bridge-python-test

# podman exec -it 7b39b67fa0d0 /bin/bash
(app-root) bash-5.1# date
Mon Jan 13 08:41:16 PM UTC 2025

When container engines like Podman, Docker, or CRI-O run containers, they pull down the specified OCI image from a container registry. This image is built with a hardcoded link from /etc/localtime to one time zone. Usually, the time zone is set to the location where the image or base image was built, or to UTC±00:00 For more information, read the Readhat article Does your container know what time it is?

Solution

There are 2 ways you can fix this problem

1. Sync time by mounting the time zone file from the host into the container.

See 'podman run' command documentation for [--tz] (https://docs.podman.io/en/stable/markdown/podman-run.1.html#tz-timezone)

#  podman run -dt -p 4243:4242,9251:9250 -e "SERVER=9.152.187.254" -e "APIKEYVALUE=54dc249a-6de2-4399-bec0-6155f35ff3c7" -e "PORT=4242" -e "PROMETHEUS=9250" -e "BASICAUTHUSER=scale_admin" -e "BASICAUTHPASSW=TXlWZXJ5U3Ryb25nUGFzc3cwcmQhCg==" -e "LOGLEVEL=5" -v /templog:/var/log/ibm_bridge_for_grafana --mount type=bind,src=/home/zimon/ZIMonSensors.cfg,target=/opt/IBM/zimon/ZIMonSensors.cfg,ro=true --tz CET --pod new:my-test-pod --name bridge-python-test scale_bridge_arg:1.0_dev
5121276ce494b68a49131817b7829f68701f992ffa081ac6f31f30c365778517


# podman ps
CONTAINER ID  IMAGE                                    COMMAND               CREATED            STATUS            PORTS                                           NAMES
b8910c688b15  localhost/podman-pause:4.4.1-1676978277                        About an hour ago  Up About an hour  0.0.0.0:4242->4242/tcp, 0.0.0.0:9250->9250/tcp  9391f1192121-infra
977ac01c1de0  localhost/scale_bridge:test_8.0.2_prod   sh -c python3 zim...  About an hour ago  Up About an hour  0.0.0.0:4242->4242/tcp, 0.0.0.0:9250->9250/tcp  bridge-basic-auth-test
cfc6695d2ea1  localhost/podman-pause:4.4.1-1676978277                        2 minutes ago      Up 2 minutes      0.0.0.0:4243->4242/tcp, 0.0.0.0:9251->9250/tcp  b8b869f6a80f-infra
5121276ce494  localhost/scale_bridge_arg:1.0_dev       sh -c python zimo...  2 minutes ago      Up 2 minutes      0.0.0.0:4243->4242/tcp, 0.0.0.0:9251->9250/tcp  bridge-python-test

# podman exec -it 5121276ce494 /bin/bash
(app-root) bash-5.1# date
Mon Jan 13 09:46:10 PM CET 2025

2. Set a system-wide default timezone for all your containers using containers.conf.

Step-by-step instructions are described in the Readhat article Does your container know what time it is?