Installing KooCLI

Install KooCLI. For details, see Installing KooCLI in Linux.
Obtain an access key (access key ID and secret access key, also called "AK/SK").
- If you have access to the console, log in to it, and create an access key on the My Credentials page. For details, see Creating an Access Key. An AK/SK file is downloaded. Generally, it is named credentials.csv. As shown in the following figure, the file contains a username, AK, and SK.
  Figure 1 Content of the credentials.csv file
- If you do not have access to the console, request the administrator to create an access key for you on the IAM console in case your access key is lost or needs to be reset. For details, see Managing Access Keys for an IAM User.
Initialize KooCLI.
Run the following command to initialize KooCLI:
```
hcloud configure init
```
Enter an access key ID, secret access key, and region name. If the information shown in Figure 2 is displayed, the initialization is successful.

Figure 2 Initialization successful
Run the following command to view the commands supported by FunctionGraph. As shown in Figure 3, Available Operations lists the operations supported by FunctionGraph.
```
hcloud FunctionGraph --help
```
Figure 3 Operations supported by FunctionGraph

Run the following command to obtain help information about operation InvokeFunction. If the command is successfully executed, the information shown in Figure 4 is displayed.
```
hcloud FunctionGraph InvokeFunction --help
```
Figure 4 Help information about operation InvokeFunction