diff --git a/Jenkinsfile b/Jenkinsfile
new file mode 100644
index 0000000..005f009
--- /dev/null
+++ b/Jenkinsfile
@@ -0,0 +1,65 @@
+pipeline {
+    agent any
+    tools {
+        ansible 'Ansible'
+    }
+    environment {
+        PSQL_PASSWORD = credentials('PSQL_pass')
+        VAULT_PASSWORD = credentials('ansible_vault_password')
+    }
+    parameters {
+        string(name: 'DB_USER', defaultValue: 'postgres', description: 'Имя пользователя базы данных')
+        string(name: 'DB_NAME', defaultValue: 'mydb', description: 'Имя базы данных')
+        string(name: 'BACKUP_DIR', defaultValue: '/var/backups/postgresql', description: 'Директория для бэкапа')
+    }
+    stages {
+        stage('Clone repository') {
+            steps {
+                git branch: 'dev', url: 'http://192.168.0.70:3000/coursework/courseworkrep.git'
+            }
+        }
+        stage('Decrypt SSH Key') {
+            steps {
+                script {
+                    def tempDir = '/tmp/' + UUID.randomUUID().toString()
+                    env.TEMP_DIR = tempDir
+                    sh "mkdir -p ${tempDir}"
+
+                    def decryptedKeyFile = "${tempDir}/id_ed25519"
+                    def vaultPassFile = "${tempDir}/vault_pass"
+
+                    writeFile file: vaultPassFile, text: VAULT_PASSWORD
+                    
+                    sh """
+                        ansible-vault decrypt ./id_ed25519_vault --vault-password-file=${vaultPassFile} --output=${decryptedKeyFile}
+                    """
+                    env.DECRYPTED_KEY_FILE = decryptedKeyFile
+                }
+            }
+        }
+        stage('Install PostgreSQL') {
+            steps {
+                ansiblePlaybook(
+                    playbook: 'install_postgresql.yml',
+                    inventory: "inventory.yml",
+                    extraVars: [
+                        postgres_user: params.DB_USER,
+                        postgres_password: PSQL_PASSWORD,  
+                        postgres_db: params.DB_NAME,
+                        backup_dir: params.BACKUP_DIR,
+                        ansible_ssh_private_key_file: env.DECRYPTED_KEY_FILE
+                    ]
+                )
+            }
+        }
+    }
+    post {
+        always {
+            script {
+                if (env.TEMP_DIR) {
+                    sh "rm -rf ${env.TEMP_DIR}"
+                }
+            }
+        }
+    }
+}
diff --git a/id_ed25519_vault b/id_ed25519_vault
new file mode 100644
index 0000000..c88bd0b
--- /dev/null
+++ b/id_ed25519_vault
@@ -0,0 +1,26 @@
+$ANSIBLE_VAULT;1.1;AES256
+65316433646437363338333233313530386265396432326633303334363130396438623632373733
+6234643334313336376439343564616333366632393666320a623066663130336665663763626337
+36353135383933386431643036336561653438356537363262333530663363333138663966336231
+3631333939653033370a643061336136313031336163346431393034653237646265653665316466
+63333966383038666635636462393361313731666239356139653466663761383531653063343733
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+64323462653532636161333339623138663564396261363832626630393533323139616165363065
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+66656463643761366335663331633733383065316530653935613134653837666332653262326266
+39396237616235383163386662363637346633366231373236323734383934383035623739333263
+65316364306462376134373165393661316561383837383438306365666437373365366461663439
+61336463636462333363313766363465313163373063323864613136303564396137333536373235
+33656135393732653230373031613663633866386537643164623138623663626663303331656631
+37666562663135643832386335373132643738393233656361663931306563386666613135303033
+32663633373439646564663036626561336338313239316634623838633534306530633739363831
+39306631356662363430633866653538623837303537343331363066326466646430346638623162
+6438
diff --git a/install_postgresql.yml b/install_postgresql.yml
new file mode 100644
index 0000000..c490c4c
--- /dev/null
+++ b/install_postgresql.yml
@@ -0,0 +1,125 @@
+- name: Install PostgreSQL and Backup
+  hosts: all
+  become: true
+  vars:
+    postgres_user: '{{ postgres_user }}'
+    postgres_password: '{{ postgres_password }}'
+    postgres_db: '{{ postgres_db }}'
+    backup_dir: '{{ backup_dir }}'
+  
+  tasks:
+    - name: Update zypper
+      command: zypper refresh
+      register: zypper_refresh
+      changed_when: "'Refreshing' in zypper_refresh.stdout"
+
+    - name: Update System
+      zypper:
+        name: '*'
+        state: latest
+      when: zypper_refresh.changed
+
+    - name: Update PostgreSQL package
+      zypper:
+        name:
+          - postgresql-server
+          - postgresql-contrib
+        state: present
+
+    - name: PostgreSQL initdb
+      command: sudo -u postgres initdb -D /var/lib/pgsql/data
+      args:
+        creates: /var/lib/pgsql/data/PG_VERSION
+
+    - name: Systemctl start and enable PostgreSQL
+      service:
+        name: postgresql
+        state: started
+        enabled: true
+
+    - name: python3-psycopg2 install
+      zypper:
+        name: python3-psycopg2
+        state: present
+
+    - name: Change listen_addresses in postgresql.conf
+      lineinfile:
+        path: /var/lib/pgsql/data/postgresql.conf
+        regexp: '^#?listen_addresses\\s*='
+        line: "listen_addresses = '*'"
+      notify: Restart PostgreSQL
+
+    - name: Change pg_hba.conf
+      lineinfile:
+        path: /var/lib/pgsql/data/pg_hba.conf
+        regexp: '^host\\s+all\\s+all\\s+0\\.0\\.0\\.0/0\\s+md5'
+        line: 'host    all             all             0.0.0.0/0               md5'
+      notify: Restart PostgreSQL
+
+    - name: Create User PostgreSQL
+      community.postgresql.postgresql_user:
+        name: '{{ postgres_user }}'
+        password: '{{ postgres_password }}'
+        state: present
+
+    - name: Create Base PostgreSQL
+      community.postgresql.postgresql_db:
+        name: '{{ postgres_db }}'
+        owner: '{{ postgres_user }}'
+        encoding: UTF8
+        state: present
+
+    - name: Create a table
+      community.postgresql.postgresql_query:
+        db: '{{ postgres_db }}'
+        query: 'CREATE TABLE IF NOT EXISTS contacts (id SERIAL PRIMARY KEY, name VARCHAR(100), phone_number VARCHAR(15));'
+        login_user: '{{ postgres_user }}'
+        login_password: '{{ postgres_password }}'
+
+    - name: Open firewall 5432 port
+      command: firewall-cmd --add-port=5432/tcp --permanent
+      become: true
+
+    - name: Restart Firewall
+      command: firewall-cmd --reload
+      become: true
+
+    - name: Create backup directory
+      file:
+        path: '{{ backup_dir }}'
+        state: directory
+        owner: postgres
+        group: postgres
+        mode: '0755'
+
+    - name: PostgreSQL database backup
+      become_user: postgres
+      command: 'pg_dump -U {{ postgres_user }} -F c -f "{{ backup_dir }}/db_backup_{{ postgres_db }}_{{ ansible_date_time.iso8601 }}.sql" {{ postgres_db }}'
+      environment:
+        PGPASSWORD: '{{ postgres_password }}'
+
+    - name: Create cron for daily full backup
+      cron:
+        name: 'PostgreSQL daily full backup'
+        user: postgres
+        minute: '0'
+        hour: '1'
+        job: 'pg_dump -U {{ postgres_user }} -F c {{ postgres_db }} > {{ backup_dir }}/full_db_backup_{{ postgres_db }}_$(date +\\\\%F-\\\\%H-%M).sql'
+      environment:
+        PGPASSWORD: '{{ postgres_password }}'
+
+    - name: Create cron backup script
+      cron:
+        name: 'PostgreSQL hourly backup'
+        user: postgres
+        minute: '0'
+        hour: '*'
+        job: 'pg_dump -U {{ postgres_user }} -F c {{ postgres_db }} > {{ backup_dir }}/db_backup_{{ postgres_db }}_$(date +\\\\%F-\\\\%H-%M).sql'
+      environment:
+        PGPASSWORD: '{{ postgres_password }}'
+
+  handlers:
+    - name: Restart PostgreSQL
+      service:
+        name: postgresql
+        state: restarted
diff --git a/inventory.yml b/inventory.yml
new file mode 100644
index 0000000..215250f
--- /dev/null
+++ b/inventory.yml
@@ -0,0 +1,6 @@
+all:
+  children:
+    postgres_servers:
+      hosts:
+        192.168.0.71:
+          ansible_user: ansible
\ No newline at end of file