1 | --- |
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2 | # This ansible-playbook prepares hosts for use of borg backup |
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3 | # |
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4 | # What it does: |
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5 | # - enable borg ppa |
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6 | # - install borg client |
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7 | # - create SSH key for passwordless login |
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8 | # - generate passphrase for borgi (/root/backup/.borg_passphrase) |
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9 | # - add SSH key at remote storagebox authorized_keys |
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10 | # - create borg dirs (log, root/backup) |
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11 | # - create scripts in /root/backup/ for borg handling |
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12 | # - initialize backup repo on remote machine(s) running borg-init.sh |
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13 | # - install CRON jobs for regular backups |
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14 | # - download generated keyfiles/passwords to local machine (borg-creds/) |
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15 | # |
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16 | ## |
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17 | # |
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18 | # This playbook will normally be run like this: |
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19 | # |
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20 | # ansible-playbook -b -i h8.waeup.org, --ask-vault-pass backup-init.yml |
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21 | # |
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22 | # Cf.: https://github.com/noplanman/ansible-role-borgbackup/blob/master/tasks/borg-client.yml |
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23 | # |
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24 | ## |
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25 | # |
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26 | # PLEASE NOTE: this playbook requires a gazillion parameters to be set via host vars. |
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27 | # As some of these are hopefully encrypted, you also need the respective |
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28 | # passwords. |
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29 | # |
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30 | ## |
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31 | - hosts: h9.waeup.org |
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32 | become: yes |
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33 | vars: |
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34 | backup_server_url: "u220626.your-storagebox.de" |
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35 | backup_server_user: "u220626" |
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36 | |
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37 | tasks: |
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38 | - name: "Activate borg PPA" |
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39 | apt_repository: |
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40 | repo: "ppa:costamagnagianfranco/borgbackup" |
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41 | codename: "{{ ansible_distribution_release }}" |
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42 | state: present |
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43 | |
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44 | - name: "Install packages for borg backup" |
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45 | apt: |
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46 | name: ['borgbackup', 'pwgen', 'sshpass'] |
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47 | state: present |
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48 | |
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49 | - name: "Generate ssh-key for backup." |
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50 | openssh_keypair: |
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51 | path: "/root/.ssh/id_backup" |
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52 | type: "ed25519" |
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53 | register: sshkey |
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54 | |
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55 | - name: "Create directories for config and logs." |
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56 | file: |
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57 | path: '{{ item.path }}' |
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58 | state: directory |
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59 | owner: root |
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60 | group: root |
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61 | mode: '{{ item.mode }}' |
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62 | loop: |
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63 | - { path: '/root/backup', mode: '0700' } |
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64 | - { path: '/var/log/borg', mode: '0755' } |
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65 | |
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66 | - name: "Generate a backup password." |
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67 | shell: |
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68 | cmd: echo 'export BORG_PASSPHRASE="'$(pwgen -s -1 64)'"' > "/root/backup/.borg_passphrase" |
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69 | creates: "/root/backup/.borg_passphrase" |
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70 | |
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71 | - name: "Fix file permissions of password." |
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72 | file: |
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73 | path: '/root/backup/.borg_passphrase' |
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74 | owner: root |
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75 | group: root |
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76 | mode: '0600' |
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77 | |
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78 | - name: "Get authorized_keys from backup server" |
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79 | shell: |
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80 | cmd: > |
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81 | SSHPASS={{ item.password }} |
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82 | sshpass -e scp |
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83 | -o BatchMode=no -o StrictHostKeyChecking=no |
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84 | {{ item.user }}@{{ item.fqdn }}:.ssh/authorized_keys |
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85 | /tmp/authkeys-{{ item.type }}-{{ item.fqdn }}-authkeys |
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86 | when: item.type in ['hetzner',] |
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87 | with_items: "{{ borgbackup_servers }}" |
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88 | changed_when: false |
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89 | failed_when: false |
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90 | |
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91 | - name: "update authorized_keys" |
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92 | authorized_key: |
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93 | user: "root" |
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94 | key: "{{ sshkey.public_key }}" |
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95 | path: /tmp/authkeys-{{ item.type }}-{{ item.fqdn }}-authkeys |
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96 | manage_dir: false |
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97 | when: item.type in ['hetzner', ] |
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98 | with_items: "{{ borgbackup_servers }}" |
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99 | register: authkeys |
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100 | |
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101 | - name: "Upload changed authorized_keys" |
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102 | shell: |
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103 | cmd: | |
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104 | SSHPASS={{ item.password }} sshpass -e sftp -oBatchMode=no -oStrictHostKeyChecking=no {{ item.user }}@{{ item.fqdn }} << EOF |
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105 | mkdir ./.ssh |
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106 | chmod 0700 ./.ssh |
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107 | cd .ssh |
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108 | put /tmp/authkeys-{{ item.type }}-{{ item.fqdn }}-authkeys authorized_keys |
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109 | chmod 0600 authorized_keys |
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110 | bye |
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111 | EOF |
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112 | when: (item.type in ['hetzner', ]) and (authkeys.changed) |
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113 | with_items: "{{ borgbackup_servers }}" |
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114 | |
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115 | - name: "Remove tmp authorized_keys files" |
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116 | file: |
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117 | path: /tmp/authkeys-{{ item.type }}-{{ item.fqdn }}-authkeys |
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118 | state: absent |
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119 | with_items: "{{ borgbackup_servers }}" |
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120 | |
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121 | - name: "Disable strict host key checks for backup server" |
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122 | blockinfile: |
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123 | dest: "/root/.ssh/config" |
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124 | create: true |
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125 | marker: "### {mark} ANSIBLE MANAGED BLOCK {{ item.fqdn }} ###" |
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126 | content: | |
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127 | Host {{ item.fqdn }} |
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128 | StrictHostKeyChecking no |
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129 | IdentityFile /root/.ssh/id_backup |
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130 | {% if item.port is defined %}Port {{ item.port }}{% endif %} |
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131 | with_items: "{{ borgbackup_servers }}" |
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132 | |
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133 | - name: "Upload borg-init.sh script" |
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134 | template: |
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135 | src: "borg-init.sh.j2" |
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136 | dest: "/root/backup/borg-init.sh" |
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137 | owner: "root" |
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138 | group: "root" |
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139 | mode: "0744" |
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140 | force: no |
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141 | |
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142 | - name: "Upload borg-backup.sh script" |
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143 | template: |
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144 | src: "borg-backup.sh.j2" |
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145 | dest: "/root/backup/borg-backup.sh" |
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146 | owner: "root" |
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147 | group: "root" |
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148 | mode: "0744" |
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149 | force: no |
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150 | |
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151 | - name: "Upload sb-ftp.sh script" |
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152 | template: |
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153 | src: "sb-ftp.sh.j2" |
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154 | dest: "/root/backup/sb-ftp.sh" |
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155 | owner: "root" |
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156 | group: "root" |
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157 | mode: "0744" |
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158 | force: no |
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159 | |
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160 | - name: "Initialize repo" |
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161 | command: /root/backup/borg-init.sh |
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162 | args: |
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163 | creates: /root/.config/borg/keys/ |
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164 | |
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165 | - name: "Create backup cronjob" |
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166 | cron: |
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167 | cron_file: "borg-backup" |
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168 | user: "root" |
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169 | name: "borg-backup" |
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170 | minute: "{{ borgbackup_cron_minute }}" |
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171 | hour: "{{ borgbackup_cron_hour }}" |
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172 | day: "{{ borgbackup_cron_day }}" |
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173 | job: "/root/backup/borg-backup.sh > /dev/null 2>&1" |
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174 | |
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175 | - name: "Fetch keyfiles to localhost" |
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176 | fetch: |
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177 | src: /root/.config/borg/keys/{{ item.fqdn | replace('.', '_') | replace('-', '_') }}__{{ item.home }}{{ item.pool }}_{{ inventory_hostname_short }} |
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178 | dest: borg-creds/ |
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179 | flat: yes |
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180 | with_items: "{{ borgbackup_servers }}" |
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181 | |
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182 | - name: "Fetch passwordfile to localhost" |
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183 | fetch: |
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184 | src: /root/backup/.borg_passphrase |
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185 | dest: borg-creds/_borg_passphrase-{{ inventory_hostname_short }} |
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186 | flat: yes |
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187 | |
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188 | - debug: |
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189 | msg: |
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190 | - "A copy of the keyfile and the borg password were saved to the" |
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191 | - "local borg-creds/ directory." |
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192 | - "Please keep them in a safe place, away from the backup machine" |
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193 | - "and the backuped machine. You might want to encrypt them." |
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194 | |
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