| [13839] | 1 | --- |
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| 2 | # This ansible-playbook prepares fresh-from-hetzner |
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| 3 | # servers for work with ansible. |
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| 4 | # |
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| 5 | # What it does: |
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| 6 | # secures sshd (according to bettercrypto.org) |
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| 7 | # adds accounts uli/henrik/deploy |
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| 8 | # disables root access |
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| 9 | # |
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| 10 | # This playbook should be executed as first thing |
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| 11 | # after getting your hands over new hardware |
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| 12 | # |
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| 13 | # It will normally be run with ``ask-pass`` |
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| 14 | # |
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| 15 | - hosts: yet-untouched |
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| [13842] | 16 | vars: |
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| 17 | deploy_user: 'deploy' |
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| 18 | deploy_public_key: "{{ lookup('file', 'files/id-deploy.pub') }}" |
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| [13849] | 19 | |
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| 20 | handlers: |
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| 21 | - name: "restart sshd" |
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| 22 | service: |
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| 23 | name="ssh" |
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| 24 | enabled=yes |
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| 25 | state=restarted |
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| 26 | |
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| [13839] | 27 | tasks: |
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| [13842] | 28 | - name: "bootstrap | create 'deploy' user" |
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| 29 | user: |
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| 30 | name="{{ deploy_user }}" |
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| 31 | append=yes |
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| 32 | uid=2222 |
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| 33 | |
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| 34 | - name: "bootstrap | update authorized key of 'deploy'" |
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| 35 | authorized_key: |
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| 36 | user="{{ deploy_user }}" |
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| 37 | key="{{ deploy_public_key }}" |
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| 38 | |
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| [13844] | 39 | - name: "bootstrap | grant sudoers perms to 'deploy'" |
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| 40 | lineinfile: |
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| [13847] | 41 | dest=/etc/sudoers |
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| 42 | insertafter="^root" |
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| 43 | line="{{ deploy_user }} ALL=(ALL) NOPASSWD{{ ':' }} ALL" |
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| 44 | state=present |
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| [13844] | 45 | |
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| [13845] | 46 | - name: "bootstrap | disable dsa keys in sshd_config" |
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| 47 | lineinfile: |
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| 48 | dest=/etc/ssh/sshd_config |
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| 49 | backrefs=yes |
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| 50 | line='# HostKey /etc/ssh/ssh_host_dsa_key' |
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| 51 | regexp='^HostKey /etc/ssh/ssh_host_dsa_key' |
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| 52 | state=present |
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| [13849] | 53 | notify: "restart sshd" |
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| [13845] | 54 | |
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| 55 | - name: "bootstrap | disable ecdsa keys in sshd_config" |
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| 56 | lineinfile: |
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| 57 | dest=/etc/ssh/sshd_config |
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| 58 | backrefs=yes |
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| 59 | line='# HostKey /etc/ssh/ssh_host_ecdsa_key' |
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| 60 | regexp='^HostKey /etc/ssh/ssh_host_ecdsa_key' |
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| 61 | state=present |
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| [13849] | 62 | notify: "restart sshd" |
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| [13845] | 63 | |
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| 64 | - name: "bootstrap | set key bits in sshd_config to 4096" |
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| 65 | lineinfile: |
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| 66 | dest=/etc/ssh/sshd_config |
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| 67 | backrefs=yes |
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| 68 | line='ServerKeyBits 4096' |
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| 69 | regexp='^ServerKeyBits 1024' |
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| 70 | state=present |
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| [13849] | 71 | notify: "restart sshd" |
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| [13845] | 72 | |
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| [13848] | 73 | - name: "bootstrap | remove short moduli (<2048 bits) from /etc/ssh/moduli" |
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| 74 | replace: |
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| 75 | dest=/etc/ssh/moduli |
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| 76 | regexp='^([0-9]+\s){4}(1[0-9]{3}\s)' |
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| [13849] | 77 | notify: "restart sshd" |
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