Setup

• Rancher version: 2.9.4, master
• Rancher UI Extensions:
• Browser type & version: Any

Describe the bug

When copying and pasting a multi-line string of environment variables into the "variable name" field in Cluster Manager’s Agent Environment Vars section, the values are incorrectly parsed. This happens when the pasted string includes multiple key-value pairs separated by either = or :. The values are not properly extracted, causing incorrect data.

To Reproduce

1. Copy the following multi-line string:

guestinfo.interface.0.ip.0.address=ip:${var.tools_cluster_infra.network}
guestinfo.interface.0.ip.0.netmask=$${netmask:${var.tools_cluster_infra.network}}
guestinfo.interface.0.route.0.gateway=$${gateway:${var.tools_cluster_infra.network}}
guestinfo.dns.servers=$${dns:${var.tools_cluster_infra.network}}

2. Navigate to Cluster Manager.
3. Go to Create custom RKE2 Cluster
4. Select the Agent Environment Vars section.
5. Paste the copied content into the Variable Name field.

Result
The values are not parsed correctly, resulting in incorrectly formatted values. The environment variables are not populated as expected.

Expected Result

The pasted multi-line string should be correctly parsed into key-value pairs by splitting on the first occurrence of = or :.

Screenshots

Additional context

SURE-9553