Where to find subordinate IDs in subuid file?

Where to find subordinate IDs in subuid file?

Each line in /etc/subuid contains a user name and a range of subordinate user ids that user is allowed to use. This is specified with three fields delimited by colons (“:”).

What do you need to know about subuid in Linux?

Each line in /etc/subuid contains a user name and a range of subordinate user ids that user is allowed to use. This is specified with three fields delimited by colons (“:”).

What are the fields in the subordinate UID file?

These fields are: · login name · numerical subordinate user ID · numerical subordinate user ID count This file specifies the user IDs that ordinary users can use, with the newuidmap command, to configure uid mapping in a user namespace. Multiple ranges may be specified per user.

How to calculate starting sub user ID in Docker?

The first column is a username, the second column is the starting subordinate user ID that this user is allowed to use in a user namespace upto a maximum number of user IDs given by the third column. You can also see that the starting sub user ID of the second row is calculated as: Previous Starting Sub UID + the number of user IDs allowed.

How to add user names to subuid ranges?

@praveenkumar please manually edit your file and add enough user, usermod –add-subuids 10000-65536 USERNAME adds less users as the second argument is the maximum ID of the range, not the range size @giuseppe after manually updating the range size now able to pull the images.

What do you need to know about subgid in Linux?

Each line in /etc/subgid contains a user name and a range of subordinate group ids that user is allowed to use. This is specified with three fields delimited by colons (“:”).

What are the fields in the subgid file?

This is specified with three fields delimited by colons (“:”). These fields are: • login name or UID • numerical subordinate group ID • numerical subordinate group ID count This file specifies the group IDs that ordinary users can use, with the newgidmap command, to configure gid mapping in a user namespace.