A: You can modify the startup plug-ins in the `~/.obd/plugins/oceanbase-ce/` directory. For example, after you add a new startup configuration item for OceanBase-CE V3.1.0, you can modify the `start.py` file in the `~/.obd/plugins/oceanbase-ce/3.1.0` directory.
## Q: How to update OBD local mirror in offline mode?
A: When your machine with OBD installed cannot connect to the public network, but you need to update OBD or other components, you can download the RPM package you need on another machine that can connect to the public network, copy the RPM package to the machine where OBD installed, and then add the new RPM package to the local mirror through `obd mirror clone` command.
The following shows how to update the OBD mirror in the local repository:
```shell
# First, download the OBD 1.2.1 el7 RPM package on a machine that can connect to the public network.
# Links to the latest RPM packages are available in the release notes of the corresponding component's git repository or on the OceanBase open source website (https://open.oceanbase.com/softwareCenter/community).
# Copy the downloaded RPM package to the machine where OBD is installed, i.e. obd_server.
sh ob-deploy-1.2.1-9.el7.x86_64.rpm obd_server:~
# Add the downloaded mirror to local.
obd mirror clone ob-deploy-1.2.1-9.el7.x86_64.rpm
# Close the remote mirror source.
obd mirror disable remote
```
## Q：How to update OBD?
A：You can use the `obd update` command to update OBD. When you are done with the update, use the `obd --version` command to confirm the version of OBD.
A：There are two ways to update your OBD, which you can choose from depending on your situation:
+ If your machine can connect to the public network or have the RPM package for the updated OBD in the mirror you configured, you can directly use the `obd update` command to update the OBD. When you finish with the update, use the `obd --version` command to check the version of OBD and confirm whether the update is successful.
+ If your machine cannot connect to the public network and there is no RPM package for the updated OBD in the mirror you configured. Please add the RPM package that used to update OBD to the local mirror via `obd mirror clone` command first, and then use the `obd update` command to update the OBD.
The following shows how to update OBD to V1.2.1 on CentOS7 offline mode:
```shell
# First, download the OBD 1.2.1 el7 RPM package on a machine that can connect to the public network.
# Links to the latest RPM packages are available in the release notes of the corresponding component's git repository or on the OceanBase open source website (https://open.oceanbase.com/softwareCenter/community).
# Copy the downloaded RPM package to the machine where OBD is installed, i.e. obd_server.
sh ob-deploy-1.2.1-9.el7.x86_64.rpm obd_server:~
# Execute the following command on the OBD machine to complete the upgrade.
# 1.Add the downloaded mirror to local.
obd mirror clone ob-deploy-1.2.1-9.el7.x86_64.rpm
# 2.Close the remote mirror source.
obd mirror disable remote
# 3.Update.
obd update
```
## Q: How to upgrade OceanBase with OBD?
A: You can use the `Too many match` command to upgrade OceanBase.
A: There are two ways to upgrade OceanBase with OBD, which you can choose from depending on your situation:
+ If your machine can connect to the public network or have the RPM package for the updated OceanBase in the mirror you configured, you can directly use the `obd cluster upgrade` command to upgrade the OceanBase.
+ If your machine cannot connect to the public network and there is no RPM package for the updated OceanBase in the mirror you configured. Please add the RPM package that used to update OceanBase to the local mirror via `obd mirror clone` command first, and then use the `obd cluster upgrade` command to upgrade the OceanBase.
For example, if you want to upgrade OceanBase from V3.1.1 to V3.1.2, you can run these commands:
The following shows how to upgrade OceanBase-CE from V3.1.1 to V3.1.2 with OBD on CentOS7 offline mode:
```shell
export LANG=en_US.UTF-8
obd cluster upgrade s1 -V 3.1.2 -v-c oceanbase-ce
```shell
# First, you should check your OBD version, and if the version is lower than V1.2.1, please update the OBD version.
# Download the OceanBase-CE RPM package on a machine that can connect to the public network.
# Links to the latest RPM packages are available in the release notes of the corresponding component's git repository or on the OceanBase open source website (https://open.oceanbase.com/softwareCenter/community).
