Git initial commit

LICENSE

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+MIT License
+
+Copyright (c) <year> <copyright holders>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# cloud-backup
+
+Ansible role repository in order to setup backup clientside tasks (what should be backuped) and masterside tasks (where should be backuped from where).

defaults/main.yml

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+---
+cloud_apps: /opt
+cloud_storage: /opt/storage
+cloud_stage: prod
+cloud_update: false
+ssh_port: 1802
+
+# clients push only daily backup
+# server (!= client) will then pull daily backups
+backup_client: true
+
+# Server should pull 1 hour later the backups.
+backup_hour_shift: 1
+
+backup_times_weekday: "*"
+backup_times_hour:
+  - 6
+  - 10
+  - 14
+  - 18
+  - 22
+backup_times_minute: 0
+
+backup_keep_days: 7
+
+backup_owner: backup
+backup_owner_ssh_key: "ssh-rsa THEREISSUCHRSAKEYYET"
+backup_group: "{{ backup_owner }}"
+backup_permission: 0770
+
+backup_hosts:
+  - name: server1-name
+    domain: host1.my-domain.tld
+    ip: 001.112.223.123
+  - name: server2-name
+    domain: host2.my-domain.tld
+
+backup_folder: "{{ cloud_apps }}/backup"
+
+#backup_client_scripts:
+#  - /path/to/script -param
+backup_client_scripts: []
+#backup_client_script_envs:
+#  - var: VAR_NAME
+#    path: /some/path
+#  - var: VAR_NAME
+#    value: some_value
+backup_client_script_envs: []
+
+backup_lock: "{{ backup_folder }}/backup.lock"
+
+#backup_targets:
+#  db:
+#    - type: mariadb
+#      name: db_name_mdb
+#    - type: pgsql
+#      name: db_name_pg
+#  mail:
+#    - type: file
+#      path: /path/to/some/file
+#    - type: mariadb
+#      name: db_name_mdb_mail
+#  file:
+#    - /path/to/some/file
+#    - /path/to/some/dir
+backup_targets:
+  db: []
+  mail: []
+  file: []

handlers/main.yml

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+---

meta/main.yml

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+---
+galaxy_info:
+  role_name: backup
+  namespace: hahn-cloud
+  author: Lars Hahn
+  company: Data Learning
+  license: MIT
+  description: Role to setup a backup system + configuration.
+  min_ansible_version: 2.7
+  platforms:
+    - name: Debian
+      versions:
+        - 10
+  galaxy_tags:
+    - backup
+dependencies: []

tasks/client.yml

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+---
+- name: generate backup ssh user
+  user:
+    name: "{{ backup_owner }}"
+    group: "{{ backup_group }}"
+    comment: Backup user
+    shell: /bin/sh
+
+- name: Setup User ssh_key
+  authorized_key: 
+    user: "{{ backup_owner }}"
+    key: "{{ backup_owner_ssh_key }}"
+
+- name: generate config lists
+  template:
+    src: backup/conf/{{ conf }}.list.j2
+    dest: "{{ backup_conf }}/{{ conf }}.list"
+  loop:
+    - filedir
+    - db
+    - mail
+  loop_control:
+    loop_var: conf
+    label: "{{ conf }}.list"
+
+- name: setup backup script
+  template:
+    src: backup/backup_on_client.sh.j2
+    dest: "{{ backup_folder }}/backup.sh"
+    mode: 0740
+
+- name: setup cronjob for client backup generation
+  cron:
+    name: "backup"
+    weekday: "{{ backup_times_weekday }}"
+    hour: "{{ backup_times_hour | join(',') }}"
+    minute: "{{ backup_times_minute }}"
+    job: "{{ backup_folder }}/backup.sh"

tasks/main.yml

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+---
+# Basics
+- name: install requirements for backup system
+  apt:
+    update_cache: yes
+    state: "{% if cloud_update | bool %}latest{% else %}present{% endif %}"
+    install_recommends: yes
+    pkg:
+      - rsync
+
+- name: setup storage folders for backup
+  file:
+    state: directory
+    path: "{{ dir.value.path }}"
+    owner: "{{ backup_owner }}"
+    group: "{{ backup_group }}"
+    mode: "{{ backup_permission }}"
+  with_dict: "{{ backup_storage }}"
+  loop_control:
+    loop_var: dir
+    label: "{{ dir.key }}"
+
+- name: setup conf folder
+  file:
+    state: directory
+    path: "{{ backup_folder }}/conf"
+
+- name: setup client backup structure
+  include_tasks: client.yml
+  when: backup_client
+
+- name: setup server backup structure
+  include_tasks: server.yml
+  when: not backup_client

tasks/server.yml

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+---
+- name: analyse backup hours for pulling server
+  set_fact:
+    backup_times_server_hour: "{{ backup_times_server_hour | default([]) + [item + backup_hour_shift] }}"
+  loop: "{{ backup_times_hour }}"
+
+- name: generate backup user ssh key
+  user:
+    name: "{{ backup_owner }}"
+    generate_ssh_key: yes
+    ssh_key_type: rsa
+    ssh_key_bits: 4096
+    home: "{{ backup_folder }}"
+
+- name: template main server backup pull script
+  template:
+    src: backup/backup_from_clients.sh.j2
+    dest: "{{ backup_folder }}/pull-backup.sh"
+    mode: 0740
+
+- name: setup cronjob for server backup pull
+  cron:
+    name: "pull backups"
+    weekday: "{{ backup_times_weekday }}"
+    hour: "{{ backup_times_server_hour | join(',') }}"
+    minute: "{{ backup_times_minute }}"
+    job: "{{ backup_folder }}/pull-backup.sh"

templates/backup/backup_from_clients.sh.j2

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+#!/bin/bash
+
+set -e -o pipefail
+
+cd {{ backup_folder }}
+if [ -f {{ backup_lock }} ]; then
+    echo "Backup lock! Cannot procceed as lock '{{ backup_lock }}' exist."
+    echo "Associated PID is $(cat {{ backup_lock }})"
+    exit 1
+fi
+
+echo "$$" > {{ backup_lock }}
+BKPTIMESTAMP=$(date +"%y-%m-%d.%H")
+BKP=$BKPTIMESTAMP"_backup"
+
+
+# generate rolling folder
+{% for target in backup_targets %}
+{% for host in backup_hosts %}
+{% if 'domain' in host %}
+mkdir -p {{ target }}/{{ host.name + '_' + host.domain }}/$BKP
+{% elif 'ip' in host %}
+mkdir -p {{ target }}/{{ host.name + '_' + host.ip }}/$BKP
+{% endif %}
+{% endfor %}
+{% endfor %}
+
+
+# pull backups
+{% for target in backup_targets %}
+{% for host in backup_hosts %}
+{% if 'domain' in host %}
+rsync --rsh='ssh -p{{ ssh_port }} -i ~{{ backup_owner }}/.ssh/id_rsa'  -chav --stats --ignore-missing-args {{ backup_owner }}@{{ host.domain }}:{{ backup_folder }}/{{ target }}.tgz {{ target }}/{{ host.name + '_' + host.domain }}/$BKP
+{% elif 'ip' in host %}
+rsync --rsh='ssh -p{{ ssh_port }} -i ~{{ backup_owner }}/.ssh/id_rsa' -chav --stats --ignore-missing-args {{ backup_owner }}@{{ host.ip }}:{{ backup_folder }}/{{ target }}.tgz {{ target }}/{{ host.name + '_' + host.ip }}/$BKP
+{% endif %}
+{% endfor %}
+{% endfor %}
+
+
+# link to latest
+{% for target in backup_targets %}
+{% for host in backup_hosts %}
+{% if 'domain' in host %}
+ln -sf {{ backup_folder }}/{{ target }}/{{ host.name + '_' + host.domain }}/$BKP {{ backup_folder }}/{{ target }}/{{ host.name + '_' + host.domain }}/LATEST
+{% elif 'ip' in host %}
+ln -sf {{ backup_folder }}/{{ target }}/{{ host.name + '_' + host.ip }}/$BKP {{ backup_folder }}/{{ target }}/{{ host.name + '_' + host.ip }}/LATEST
+{% endif %}
+{% endfor %}
+{% endfor %}
+
+
+# keep only last {{ backup_keep_days * ( backup_times_hour | length ) }}
+{% for target in backup_targets %}
+{% for host in backup_hosts %}
+{% if 'domain' in host %}
+DELETE_LIST=$(ls -1dtr {{ target }}/{{ host.name + '_' + host.domain }}/* | head -n -{{ backup_keep_days * ( backup_times_hour | length ) }})
+{% elif 'ip' in host %}
+DELETE_LIST=$(ls -1dtr {{ target }}/{{ host.name + '_' + host.ip }}/* | head -n -{{ backup_keep_days * ( backup_times_hour | length ) }})
+{% endif %}
+if (( $( echo $DELETE_LIST | wc -w ) > 0 )); then
+    rm -rf $DELETE_LIST
+fi
+{% endfor %}
+{% endfor %}
+
+
+rm {{ backup_lock }}

templates/backup/backup_on_client.sh.j2

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+#!/bin/bash
+
+set -e -o pipefail
+
+if [ -f {{ backup_lock }} ]; then
+    echo "Backup lock! Cannot procceed as lock '{{ backup_lock }}' exist."
+    echo "Associated PID is $(cat {{ backup_lock }})"
+    exit 1
+fi
+echo "$$" > {{ backup_lock }}
+
+cd {{ backup_folder }}
+
+# Load script envs
+echo "Load script environment variables"
+{% for scr_env in backup_client_script_envs %}
+{% if 'path' in scr_env %}
+export {{ scr_env.var }}={{ scr_env.path }}:${{ scr_env.var }}
+{% else %}
+export {{ scr_env.var }}={{ scr_env.value }}
+{% endif %}
+{% endfor %}
+
+
+# Perform client pre backup scripts for
+echo "Perform pre-backup scripts"
+{% for cmd in backup_client_scripts %}
+{{ cmd }};
+{% endfor %}
+
+
+# Backup files and directories
+echo "Copy files and directories"
+while read DIRFILE; do
+    echo " - Copy $DIRFILE"
+    BACKUP_SUBDIR=$(dirname $DIRFILE)
+    mkdir -p "{{ backup_storage.file.path }}/$BACKUP_SUBDIR"
+    cp -r -u $DIRFILE "{{ backup_storage.file.path }}/$DIRFILE"
+done < {{ backup_conf }}/filedir.list
+rm -f file.tgz #remove old backup
+tar czfv file.tgz file
+rm -rf file/*
+
+# Backup databases
+echo "Generate DB dumps"
+while read DBS; do
+    DBTYPE=$(echo $DBS | cut -f 1 -d "{{ backup_conf_db_sep }}" );
+    DBNAME=$(echo $DBS | cut -f 2 -d "{{ backup_conf_db_sep }}" );
+    if [ $DBTYPE == "mariadb" ] || [ $DBTYPE == "mysql" ]; then
+        echo "- dump to {{ backup_storage.db.path }}/$DBTYPE/$DBNAME.sql"
+        mkdir -p {{ backup_storage.db.path }}/$DBTYPE;
+        mysqldump $DBNAME | gzip -c > {{ backup_storage.db.path }}/$DBTYPE/$DBNAME.sql.gz;
+    elif [ $DBTYPE == "pgsql" ]; then
+        echo "- dump to {{ backup_storage.db.path }}/$DBTYPE/$DBNAME.sql"
+        mkdir -p {{ backup_storage.db.path }}/$DBTYPE;
+        sudo -u postgres bash -c "pg_dump $DBNAME | gzip -c > /tmp/$DBNAME.sql.gz";
+        mv /tmp/$DBNAME.sql.gz /backup/db/$DBTYPE/$DBNAME.sql.gz;
+    else
+        echo "- ERROR! DB type '$DBTYPE' for '$DBNAME' is unknown to backup."
+    fi
+done < {{ backup_conf }}/db.list
+rm -f db.tgz #remove old backup
+tar czfv db.tgz db
+rm -rf db/*
+
+#Mail
+rm -f mail.tgz #remove old backup
+tar czfv mail.tgz mail
+rm -rf mail/*
+
+rm {{ backup_lock }}
+chown {{ backup_owner }}:{{ backup_group }} {{ backup_folder }}/*.tgz

templates/backup/conf/db.list.j2

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+{% if 'db' in backup_targets %}
+{% for db in backup_targets.db %}
+{{ db.type }}{{ backup_conf_db_sep }}{{ db.name }}
+{% endfor %}
+{% endif %}

templates/backup/conf/filedir.list.j2

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+{% if 'file' in backup_targets %}
+{% for filedir in backup_targets.file %}
+{{ filedir }}
+{% endfor %}
+{% endif %}

templates/backup/conf/mail.list.j2

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+{% if 'mail' in backup_targets %}
+{% for mail in backup_targets.mail %}
+{{ mail }}
+{% endfor %}
+{% endif %}

vars/main.yml

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+---
+backup_conf: "{{ backup_folder }}/conf"
+
+backup_conf_db_sep: ":"
+
+backup_storage:
+  mail:
+    path: "{{ backup_folder }}/mail"
+  db:
+    path: "{{ backup_folder }}/db"
+  file:
+    path: "{{ backup_folder }}/file"