Rootless Podman Container Cannot Access Hosts File with Group Read Permission

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Title: Accessing Shared Certificate Key in Rootless Podman Container Running OpenLDAP Service as Non-Root User

Introduction

In this article, we will discuss how to access a shared certificate key in a rootless Podman container running an OpenLDAP service as a non-root user.

Key Concepts

• Rootless Podman
• OpenLDAP Service
• Shared Certificate Key
• Non-Root User
• Key Group Read Rights

Subtopics

1. Setting Up the Rootless Podman Container

   • Creating a Podman container for OpenLDAP
   • Enabling rootless mode

2. Sharing the Certificate Key

   • Locating the certificate key
   • Changing the ownership and group of the certificate key

3. Granting Key Group Read Rights to the Non-Root User

   • Adding the non-root user to the key group
   • Verifying the user's access to the certificate key

Code Blocks

# Create the container
podman run -d --name openldap -v /path/to/certificate:/etc/openldap/certs -p 389:389 -p 636:636 openldap

# Enable rootless mode
podman unshare --mount --pid --net --ipc --uts openldap

# Change the ownership and group of the certificate key
chown openldap:openldap /etc/openldap/certs/certificate.key

# Add the non-root user to the key group
usermod -aG openldap username

Summary

In this article, we demonstrated how to access a shared certificate key in a rootless Podman container running an OpenLDAP service as a non-root user. We covered setting up the container, sharing the certificate key, and granting key group read rights to the non-root user.

References

• Rootless Podman
• OpenLDAP

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