Crane / List Catalog Repositories In Registry
List Catalog Repositories In Registry
Enumerate all repositories within a specified container registry.
crane catalog <registry_address> crane catalog <registry_address> #!/bin/bash
# List Catalog Repositories In Registry
crane catalog {{registry_address}} import subprocess
# List Catalog Repositories In Registry
# Make sure to replace <placeholders> with actual values
def run_command():
cmd = [
"crane",
"catalog",
"<registry_address>"
]
try:
print(f"Executing: {' '.join(cmd)}")
subprocess.run(cmd, check=True)
except subprocess.CalledProcessError as e:
print(f"Error: {e}")
except FileNotFoundError:
print("Error: crane not found. Please install it first.")
if __name__ == "__main__":
run_command() When To Use
During audits of repository contents for security and compliance validation.
Pro Tip
Use `--filter` to limit results to specific namespaces and improve query performance, especially in large registries.
Command Builder
Tune the command before you copy it
crane catalog <registry_address> Terminal Output
Expected runtime feedback
+-----------------------------------+
| Repositories |
+-----------------------------------+
| my-app-repo |
| second-app-repo |
| test-repo |
| another-repo |
+-----------------------------------+ Anatomy of Output
Understanding the result
Repositories available: 10 Repository Count Total number of repositories detected in the registry.
List of repositories: {repo1, repo2, repo3,...} Repository Names Shows names of repositories available in the mentioned registry.
Query duration: 120ms Query Performance Indicates how long the registry query took.
Troubleshooting
Common pitfalls
Error: Unable to connect to registry.
Solution: Check network configuration for registry address access.
Error: Invalid registry address format.
Solution: Ensure the address follows valid URI format.
Error: Authentication failed for registry.
Solution: Revalidate credentials for registry access.
Command Breakdown
What each part is doing
-
crane - Base Command
- The executable that performs this operation. Here it runs Crane before the shell applies any redirect operators.
-
<registry_address> - registry address
- The value supplied for registry address.
How To Run
Execution path
- Step 1
Run the command: `crane catalog my.registry.com` to list repositories.
- Step 2
Verify the output by checking the names of the available repositories in the list.
Alternative Approaches
Comparable commands in other tools
Alternative containers tools for the same job.
exif -e -o <path/to/thumbnail.jpg> <path/to/image.jpg> Jpegtran / Crop Image Rectangular Region Linux jpegtran -crop <W>x<H> -outfile <path/to/output.jpg> <path/to/image.jpg> Jpegtran / Crop Image Starting At Point Linux jpegtran -crop <W>x<H>+<X>+<Y> <path/to/image.jpg> > <path/to/output.jpg> Virt Sparsify / Convert Image Format Linux virt-sparsify <path/to/image> --convert <qcow2|raw|vdi|...> <path/to/new_image> Scrun / Send Specific Signal To Container scrun kill <container_id> <SIGKILL>