Linux Vserver not detected properly

[BartVB]

ISSUE TYPE

• Bug Report

COMPONENT NAME

lib/ansible/module_utils/facts/virtual/linux.py

ANSIBLE VERSION

ansible 2.4.3.0
config file = /etc/ansible/ansible.cfg
configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python2.7/dist-packages/ansible
executable location = /usr/bin/ansible
python version = 2.7.6 (default, Nov 23 2017, 15:49:48) [GCC 4.8.4]

Also present in 'devel' branch.

OS / ENVIRONMENT

Host with Linux Vserver:
Linux FQDN 4.1.48-vs2.3.8.6-beng #1 SMP Sun Jan 14 14:33:48 GMT 2018 x86_64 GNU/Linux

SUMMARY

Ansible uses /proc/self/status to detect Linux Vserver with:

ansible/lib/ansible/module_utils/facts/virtual/linux.py

Line 157 in 6a223d5

if re.match(r'^VxID: \d+', line):

This doesn't work on my system, the output of /proc/self/status contains:

Cpus_allowed:   ff
Cpus_allowed_list:      0-7
Mems_allowed:   00000000,00000001
Mems_allowed_list:      0
VxID:   40024
NxID:   40024
voluntary_ctxt_switches:        0
nonvoluntary_ctxt_switches:     1

There are three spaces between 'VxID:' and '40024', the regex only allows one.

Changing the code to:

if re.match(r'^VxID:\s*\d+', line):

Fixes this.

[ansibot]

Files identified in the description:
None

If these files are inaccurate, please update the component name section of the description or use the !component bot command.

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[ansibot]

Files identified in the description:

• lib/ansible/module_utils/facts/virtual/linux.py

If these files are inaccurate, please update the component name section of the description or use the !component bot command.

click here for bot help