How to detect namespacing
Use following commands and compare the outputs:
# List init process namespaces
readlink /proc/1/ns/*
# List target process namespaces (replace <pid>)
readlink /proc/<pid>/ns/*
Need to determine if a process is running in an isolated environment like a container or sandbox? Check its namespaces! Here’s how:
To check if a process is namespaced, compare its namespaces with those of
the init process. You can do this by examining the symbolic links in the
/proc/<pid>/ns/ directory for both processes. Each symbolic link corresponds
to a namespace type and contains a string with the namespace type and inode
number. If the inode number for any namespace type doesn’t match between your
process and the init process, your process is namespaced.
Note: This check works only from outside the container/sandbox, and you’ll
need root access to /proc/1/ns.
Use the following commands:
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