By default, registry data is persisted in the host's `/data/` directory. This data remains unchanged even when Harbor's containers are removed and/or recreated, you can edit the `data_volume` in `harbor.yml` file to change this directory.
In addition, Harbor uses `rsyslog` to collect the logs of each container. By default, these log files are stored in the directory `/var/log/harbor/` on the target host for troubleshooting, also you can change the log directory in `harbor.yml`.
## Harbor Does Not Start or Functions Incorrectly
If Harbor does not start or functions incorrectly, run the following command to check whether all of Harbor's containers are in the `Up` state.
harbor-log /bin/sh -c /usr/local/bin/ ... Up 127.0.0.1:1514->10514/tcp
harbor-portal nginx -g daemon off; Up 80/tcp
nginx nginx -g daemon off; Up 0.0.0.0:443->443/tcp, 0.0.0.0:4443->4443/tcp, 0.0.0.0:80->80/tcp
redis docker-entrypoint.sh redis ... Up 6379/tcp
registry /entrypoint.sh /etc/regist ... Up 5000/tcp
registryctl /harbor/start.sh Up
```
If a container is not in the `Up` state, check the log file for that container in `/var/log/harbor`. For example, if the `harbor-core` container is not running, look at the `core.log` log file.
## Using `nginx` or Load Balancing
If Harbor is running behind an `nginx` proxy or elastic load balancing, open the file `common/config/nginx/nginx.conf` and search for the following line.
If the proxy already has similar settings, remove it from the sections `location /`, `location /v2/` and `location /service/` and redeploy Harbor. For instructions about how to redeploy Harbor, see [Reconfigure Harbor and Manage the Harbor Lifecycle](reconfigure-manage-lifecycle.md).
If you use an intermediate certificate from a certificate issuer, merge the intermediate certificate with your own certificate to create a certificate bundle. Run the following command.
When the Docker daemon runs on certain operating systems, you might need to trust the certificate at the OS level. For example, run the following commands.
