x/browbeat
Code Issues Proposed changes

Adjust security, still accommodate RHEL 7.4

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Change-Id: Id0e7fcf2bc15ae5a692e4f8803be7c57391bc936
This commit is contained in:
akrzos 2018-04-16 12:25:06 -04:00
parent 17e5ad6321
commit 3913d5a098
1 changed files with 55 additions and 16 deletions
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71
ansible/browbeat/adjust-security.yml
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@ -23,56 +23,95 @@
gather_facts: true
remote_user: "{{ host_remote_user }}"
vars:
ibrs_enabled: 0
pti_enabled: 1
retp_enabled: 1
ibpb_toggle: /sys/kernel/debug/x86/ibpb_enabled
ibrs_toggle: /sys/kernel/debug/x86/ibrs_enabled
pti_toggle: /sys/kernel/debug/x86/pti_enabled
retp_toggle: /sys/kernel/debug/x86/retp_enabled
security: true
vars_files:
- ../install/group_vars/all.yml
tasks:
- name: Check if rhel7
- name: Check if RHEL 7
fail:
msg: Only run against RHEL7.X
when:
- ansible_distribution != "RedHat"
- ansible_distribution_major_version < '7'
- ansible_distribution_major_version < "7"
- name: Set default values for security on with RHEL 7.5
set_fact:
ibrs_enabled: 1
pti_enabled: 1
retp_enabled: 1
when:
- security|bool
- ansible_distribution_version == "7.5"
- name: Set default values for security on with RHEL 7.4
set_fact:
ibpb_enabled: 1
ibrs_enabled: 1
pti_enabled: 1
when:
- security|bool
- ansible_distribution_version == "7.4"
- name: Check to turn off security
set_fact:
ibpb_enabled: 0
ibrs_enabled: 0
pti_enabled: 0
retp_enabled: 0
when: not security|bool
- name: Debug print the new values for security
- name: Debug print the new values for security RHEL 7.5
debug:
msg: "Setting these: ibrs_enabled- {{ibrs_enabled}} pti_enabled- {{pti_enabled}} retp_enabled - {{retp_enabled}}"
when: ansible_distribution_version == "7.5"
- name: Debug print the new values for security RHEL 7.4
debug:
msg: "Setting these: ibpb_enabled - {{ibpb_enabled}} ibrs_enabled- {{ibrs_enabled}} pti_enabled- {{pti_enabled}}"
when: ansible_distribution_version == "7.4"
- name: Check /sys/kernel for security performance affecting features
become: true
shell: |
echo "/sys/kernel/debug/x86/ibrs_enabled: $(cat /sys/kernel/debug/x86/ibrs_enabled)"
echo "/sys/kernel/debug/x86/pti_enabled: $(cat /sys/kernel/debug/x86/pti_enabled)"
echo "/sys/kernel/debug/x86/retp_enabled: $(cat /sys/kernel/debug/x86/retp_enabled)"
echo "{{ibpb_toggle}}: $(cat {{ibpb_toggle}})"
echo "{{ibrs_toggle}}: $(cat {{ibrs_toggle}})"
echo "{{pti_toggle}}: $(cat {{pti_toggle}})"
echo "{{retp_toggle}}: $(cat {{retp_toggle}})"
register: security_vars
- name: Debug print the security_vars before setting
debug:
msg: "{{security_vars.stdout_lines}}"
- name: Turn on/off security
- name: Turn on/off security on RHEL 7.5
become: true
shell: |
echo {{ibrs_enabled}} > /sys/kernel/debug/x86/ibrs_enabled
echo {{pti_enabled}} > /sys/kernel/debug/x86/pti_enabled
echo {{retp_enabled}} > /sys/kernel/debug/x86/retp_enabled
echo {{ibrs_enabled}} > {{ibrs_toggle}}
echo {{pti_enabled}} > {{pti_toggle}}
echo {{retp_enabled}} > {{retp_toggle}}
when:
- ansible_distribution_version == "7.5"
- name: Turn on/off security on RHEL 7.4
become: true
shell: |
echo {{ibpb_enabled}} > {{ibpb_toggle}}
echo {{ibrs_enabled}} > {{ibrs_toggle}}
echo {{pti_enabled}} > {{pti_toggle}}
when:
- ansible_distribution_version == "7.4"
- name: Check /sys/kernel for security performance affecting features
become: true
shell: |
echo "/sys/kernel/debug/x86/ibrs_enabled: $(cat /sys/kernel/debug/x86/ibrs_enabled)"
echo "/sys/kernel/debug/x86/pti_enabled: $(cat /sys/kernel/debug/x86/pti_enabled)"
echo "/sys/kernel/debug/x86/retp_enabled: $(cat /sys/kernel/debug/x86/retp_enabled)"
echo "{{ibpb_toggle}}: $(cat {{ibpb_toggle}})"
echo "{{ibrs_toggle}}: $(cat {{ibrs_toggle}})"
echo "{{pti_toggle}}: $(cat {{pti_toggle}})"
echo "{{retp_toggle}}: $(cat {{retp_toggle}})"
register: security_vars
- name: Debug print the security_vars after setting