auditd

Install and configure auditd on your system.

GitHub	GitLab	Quality	Downloads	Version

Example Playbook

This example is taken from molecule/default/converge.yml and is tested on each push, pull request and release.

---
- name: converge
  hosts: all
  become: yes
  gather_facts: yes

  roles:
    - role: robertdebock.auditd
      auditd_local_events: "no"
      auditd_rules:
        - file: /var/log/audit/
          keyname: auditlog
        - file: /etc/audit/
          permissions:
            - write
            - attribute_change
          keyname: auditconfig
        - file: /etc/libaudit.conf
          permissions:
            - write
            - attribute_change
          keyname: auditconfig
        - file: /etc/audisp/
          permissions:
            - write
            - attribute_change
          keyname: audispconfig
        - file: /sbin/auditctl
          permissions:
            - execute
          keyname: audittools
        - file: /sbin/auditd
          permissions:
            - execute
          keyname: audittools
        - syscall: open
          action: always
          filter: exit
          filters:
            - auid!=4294967295
            - auid!=unset
          keyname: my_keyname
          arch: b32
        - syscall: adjtimex
          action: always
          filter: exit
          keyname: time_change
        - syscall: settimeofday
          action: always
          filter: exit
          keyname: time_change
        - action: always
          filter: exit
          filters:
            - path=/bin/ping
            - perm=x
            - auid>=500
            - auid!=4294967295
          keyname: privileged

The machine needs to be prepared. In CI this is done using molecule/default/prepare.yml:

---
- name: prepare
  hosts: all
  become: yes
  gather_facts: no

  roles:
    - role: robertdebock.bootstrap

Also see a full explanation and example on how to use these roles.

Role Variables

The default values for the variables are set in defaults/main.yml:

---
# defaults file for auditd

auditd_buffer_size: 32768
auditd_fail_mode: 1
auditd_maximum_rate: 60
auditd_enable_flag: 1

auditd_local_events: "yes"
auditd_write_logs: "yes"
auditd_log_file: /var/log/audit/audit.log
auditd_log_group: root
auditd_log_format: RAW
auditd_flush: incremental_async
auditd_freq: 50
auditd_max_log_file: 8
auditd_num_logs: 5
auditd_priority_boost: 4
auditd_disp_qos: lossy
auditd_dispatcher: /sbin/audispd
auditd_name_format: none
auditd_max_log_file_action: rotate
auditd_space_left: 75
auditd_space_left_action: syslog
auditd_verify_email: "yes"
auditd_action_mail_acct: root
auditd_admin_space_left: 50
auditd_admin_space_left_action: suspend
auditd_disk_full_action: suspend
auditd_disk_error_action: suspend
auditd_use_libwrap: "yes"
auditd_tcp_listen_queue: 5
auditd_tcp_max_per_addr: 1
auditd_tcp_client_max_idle: 0
auditd_enable_krb5: "no"
auditd_krb5_principal: auditd
auditd_distribute_network: "no"

auditd_manage_rules: yes

auditd_default_arch: b64

Requirements

• pip packages listed in requirements.txt.

Status of used roles

The following roles are used to prepare a system. You can prepare your system in another way.

Requirement	GitHub	GitLab
robertdebock.bootstrap

Context

This role is a part of many compatible roles. Have a look at the documentation of these roles for further information.

Here is an overview of related roles:

Compatibility

This role has been tested on these container images:

container	tags
el	8
debian	all
fedora	all
opensuse	all
ubuntu	all

The minimum version of Ansible required is 2.10, tests have been done to:

• The previous version.
• The current version.
• The development version.

Exceptions

Some roles can't run on a specific distribution or version. Here are some exceptions.

variation	reason
alpine	auditd start-stop-daemon: /sbin/auditd does not exist
amazonlinux:1	/etc/init.d/auditd: line 32: /etc/init.d/functions: No such file or directory

If you find issues, please register them in GitHub

License

Apache-2.0

Author Information

Robert de Bock

Please consider sponsoring me.