main.yml

   1 ---
   2 - set_fact:
   3     sshd_allowusers: >-
   4       {{ [ 'root' ] | union(user_groups.noc)
   5                     | union(sshd_allowusers_group | default([]))
   6                     | union(sshd_allowusers_host  | default([])) }}
   7
   8 - name: only allow pubkey auth for root
   9   lineinfile:
  10     dest: /etc/ssh/sshd_config
  11     regexp: "^PermitRootLogin"
  12     line: "PermitRootLogin without-password"
  13   notify: restart ssh
  14
  15 - name: limit allowed users (1/2)
  16   when: sshd_allowgroup is not defined
  17   lineinfile:
  18     dest: /etc/ssh/sshd_config
  19     regexp: "^#?AllowUsers"
  20     line: "AllowUsers {{ ' '.join(sshd_allowusers) }}"
  21   notify: restart ssh
  22
  23 - block:
  24     - name: "limit allowed users (2/2): Make sure AllowUsers is not in sshd_config"
  25       lineinfile:
  26         dest: /etc/ssh/sshd_config
  27         regexp: "^AllowUsers"
  28         state: absent
  29       notify: restart ssh
  30
  31     - name: "limit allowed users (2/2): Set AllowGroups in sshd_config"
  32       lineinfile:
  33         dest: /etc/ssh/sshd_config
  34         regexp: "^#?AllowGroups"
  35         line: AllowGroups {{ sshd_allowgroup }}
  36       notify: restart ssh
  37
  38     - name: "limit allowed users (2/2): Add allowed users to ssh group"
  39       user:
  40         name: "{{ item }}"
  41         groups: "{{ sshd_allowgroup }}"
  42         append: True
  43       with_items: "{{ sshd_allowusers }}"
  44
  45   when: sshd_allowgroup is defined
  46
  47 - name: Set authorized keys for root user
  48   authorized_key:
  49     user: root
  50     key: "{{ noc_ssh_keys | join('\n') }}"
  51     exclusive: yes
  52
  53 - name: disable apt suggests and recommends
  54   copy:
  55     src: 02no-recommends
  56     dest: /etc/apt/apt.conf.d/
  57     mode: 0644
  58
  59 - name: install basic packages
  60   apt:
  61     name:
  62       - less
  63       - psmisc
  64       - sudo
  65       - htop
  66       - dstat
  67       - mtr-tiny
  68       - tcpdump
  69       - debian-goodies
  70       - lsof
  71       - haveged
  72       - net-tools
  73       - ntp
  74       - screen
  75       - aptitude
  76       - unp
  77       - ca-certificates
  78       - file
  79       - nano
  80       - zsh
  81       - python-apt
  82     state: present
  83
  84 - name: make sure grml-(etc|scripts)-core is not installed
  85   apt:
  86     name:
  87       - grml-etc-core
  88       - grml-scripts-core
  89     state: absent
  90     purge: yes
  91
  92 - block:
  93     - name: install systemd specific packages
  94       apt:
  95         name:
  96           - dbus
  97           - libpam-systemd
  98         state: present
  99
 100     - name: set systemd-related environment variables
 101       copy:
 102         src: xdg_runtime_dir.sh
 103         dest: /etc/profile.d/xdg_runtime_dir.sh
 104         mode: 0644
 105
 106   when: ansible_service_mgr == "systemd"
 107
 108 - block:
 109     - name: workaround console-setup race condition (1/2)
 110       file:
 111         path: /etc/systemd/system/console-setup.service.d/
 112         state: directory
 113
 114     - name: workaround console-setup race condition (2/2)
 115       copy:
 116         content: "[Unit]\nAfter=systemd-tmpfiles-setup.service\n"
 117         dest: /etc/systemd/system/console-setup.service.d/override.conf
 118         mode: 0644
 119       # no need to relaod systemd here, it is only there to fix a boot-time race-condition
 120
 121   when: ansible_distribution == "Ubuntu"
 122
 123 - name: install zshrc
 124   with_items:
 125     - src: "zprofile"
 126       dest: "/etc/zsh/zprofile"
 127     - src: "zshrc"
 128       dest: "/etc/zsh/zshrc"
 129     - src: "zshrc.skel"
 130       dest: "/etc/skel/.zshrc"
 131   copy:
 132     src: "{{ item.src }}"
 133     dest: "{{ item.dest }}"
 134     mode: 0644
 135
 136 - name: set root default shell to zsh
 137   user:
 138     name: root
 139     shell: /bin/zsh
 140
 141 - name: set default shell for adduser
 142   with_items:
 143     - regexp: "^DSHELL"
 144       line: "DSHELL=/bin/zsh"
 145   lineinfile:
 146     dest: /etc/adduser.conf
 147     regexp: "{{ item.regexp }}"
 148     line: "{{ item.line }}"