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# > If running `docker run --rm -it centos:centos6.7 bash` immediately exits
# > with status code 139, check to see if your system has disabled vsyscall:
# > ...
# > If you do not see a vsyscall mapping, and you need to run a CentOS 6
# > container, try adding vsyscall=emulated to the kernel options.
# > -- https://hub.docker.com/_/centos
- name: Check vsyscall enabled
command:
cmd: grep -c vsyscall /proc/self/maps
register: grep_self_maps_result
changed_when: false
check_mode: false
failed_when:
# 0 -> match, 1 -> no match, 2 -> error
- grep_self_maps_result.rc not in [0, 1]
- name: Enable vsyscall
lineinfile:
path: /etc/default/grub
regexp: '^GRUB_CMDLINE_LINUX_DEFAULT.+'
line: GRUB_CMDLINE_LINUX_DEFAULT="quiet vsyscall=emulate"
when:
- grep_self_maps_result.rc != 0
notify:
- Update GRUB
- Reboot
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