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Code Issues Releases Wiki Activity

2-common/tasks/main.yml: try to reconcile sysctl settings

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root 2020-11-27 20:51:51 -05:00
parent 45cba4e4ee
commit e392ba625c
2 changed files with 22 additions and 22 deletions
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35
roles/2-common/tasks/main.yml
View file

@ -21,25 +21,22 @@
- include_tasks: packages.yml
- include_tasks: iptables.yml
# 2020-11-27 emergency patch+experiment til this is answered more methodically:
# https://github.com/iiab/iiab/issues/2650
# https://github.com/iiab/iiab/pull/2651
#
#- name: Use 'sysctl' to set 10 network/kernel settings, turning off IPv6 if possible
# sysctl:
# name: "{{ item.name }}"
# value: "{{ item.value }}"
# with_items:
# - { name: 'net.ipv4.ip_forward', value: '1' }
# - { name: 'net.ipv4.conf.default.rp_filter', value: '1' }
# - { name: 'net.ipv4.conf.default.accept_source_route', value: '0' }
# - { name: 'kernel.sysrq', value: '1' }
# - { name: 'kernel.core_uses_pid', value: '1' }
# - { name: 'net.ipv4.tcp_syncookies', value: '1' }
# - { name: 'kernel.shmmax', value: '268435456' }
# - { name: 'net.ipv6.conf.all.disable_ipv6', value: '1' } # IPv6 disabled
# - { name: 'net.ipv6.conf.default.disable_ipv6', value: '1' }
# - { name: 'net.ipv6.conf.lo.disable_ipv6', value: '1' }
# 2020-11-27 ongoing rework arising from ansible.posix collection changes:
- name: Use 'sysctl' to set 5 network/kernel settings, turning off IPv6 if possible
sysctl: # Places these settings in /etc/sysctl.conf, to survive reboot
name: "{{ item.name }}"
value: "{{ item.value }}"
with_items:
- { name: 'net.ipv4.ip_forward', value: '1' }
- { name: 'net.ipv4.conf.default.rp_filter', value: '1' }
- { name: 'net.ipv4.conf.default.accept_source_route', value: '0' }
#- { name: 'kernel.sysrq', value: '1' } # Already set by most Linux OS's
- { name: 'kernel.core_uses_pid', value: '1' }
#- { name: 'net.ipv4.tcp_syncookies', value: '1' } # Should be set by OS
#- { name: 'kernel.shmmax', value: '268435456' } # OS values differ, Ok?
- { name: 'net.ipv6.conf.all.disable_ipv6', value: '1' } # IPv6 disabled
#- { name: 'net.ipv6.conf.default.disable_ipv6', value: '1' } # AUTO-SET
#- { name: 'net.ipv6.conf.lo.disable_ipv6', value: '1' } # BY ABOVE
- name: Install /etc/profile.d/zzz_iiab.sh from template, to add sbin dirs to unprivileged users' $PATH
template:

9
scripts/ansible
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@ -92,9 +92,12 @@ $APT_PATH/apt -y --allow-downgrades install ansible-base \
python3-setuptools python3-packaging python3-venv virtualenv
echo -e "\n\nIIAB requires these 2 Ansible Collections: (w/ ansible-base 2.10.0 or higher)\n"
ansible-galaxy collection install community.general # Re-running these
ansible-galaxy collection install community.mysql # appears to be safe!?
#ansible-galaxy collection install ansible.posix # 2020-11-27: See roles/1-prep/tasks/main.yml & PR #2647, PR #2648, #2650, PR #2651
ansible-galaxy collection install community.general # Re-running collection
ansible-galaxy collection install community.mysql # installs appears safe!
ansible-galaxy collection install ansible.posix # 2020-11-27: For 3 below...
# selinux WAS in /opt/iiab/iiab/roles/1-prep/tasks/main.yml
# sysctl in /opt/iiab/iiab/roles/2-common/tasks/main.yml
# synchronize in /opt/iiab/iiab-admin-console/roles/2-common/tasks/main.yml
echo -e "\n\nCreating/verifying directory /etc/ansible & installing /etc/ansible/hosts\n"
mkdir -p /etc/ansible