Merge pull request #96 from jkaninda/develop

Add multi database backup
2024-10-09 13:00:13 +02:00
parent 6311e9c41c b71f3e6fae
commit c8af230a9a
18 changed files with 686 additions and 193 deletions
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,7 +23,7 @@ jobs:
        uses: docker/build-push-action@v3
        with:
          push: true
-          file: "./docker/Dockerfile"
+          file: "./Dockerfile"
          platforms: linux/amd64,linux/arm64,linux/arm/v7
          build-args: |
            appVersion=develop-${{ github.sha }}
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -37,7 +37,7 @@ jobs:
        uses: docker/build-push-action@v3
        with:
          push: true
-          file: "./docker/Dockerfile"
+          file: "./Dockerfile"
          platforms: linux/amd64,linux/arm64,linux/arm/v7
          build-args: |
            appVersion=${{ env.TAG_NAME }}
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -52,7 +52,7 @@ ENV VERSION=${appVersion}
 LABEL author="Jonas Kaninda"
 LABEL version=${appVersion}

-RUN apk --update add --no-cache postgresql-client gnupg tzdata
+RUN apk --update add --no-cache postgresql-client tzdata
 RUN mkdir $WORKDIR
 RUN mkdir $BACKUPDIR
 RUN mkdir -p $BACKUP_TMP_DIR
--- a/docs/how-tos/deprecated-configs.md
+++ b/docs/how-tos/deprecated-configs.md
@@ -0,0 +1,6 @@
+---
+title: Update deprecated configurations
+layout: default
+parent: How Tos
+nav_order: 11
+---
--- a/docs/how-tos/encrypt-backup.md
+++ b/docs/how-tos/encrypt-backup.md
@@ -6,14 +6,23 @@ nav_order: 8
 ---
 # Encrypt backup

-The image supports encrypting backups using GPG out of the box. In case a `GPG_PASSPHRASE` environment variable is set, the backup archive will be encrypted using the given key and saved as a sql.gpg file instead or sql.gz.gpg.
+The image supports encrypting backups using one of two available methods: GPG with passphrase or GPG with a public key.
+
+
+The image supports encrypting backups using GPG out of the box. In case a `GPG_PASSPHRASE` or `GPG_PUBLIC_KEY` environment variable is set, the backup archive will be encrypted using the given key and saved as a sql.gpg file instead or sql.gz.gpg.
+Suppose you used a GPG public key during the backup process. In that case, you need to decrypt your backup before restoration because decryption using a `GPG private` key is not fully supported.
+

 {: .warning }
 To restore an encrypted backup, you need to provide the same GPG passphrase used during backup process.

 - GPG home directory `/config/gnupg`
 - Cipher algorithm `aes256`
- 
+
+{: .note }
+The backup encrypted using `GPG passphrase` method can be restored automatically, no need to decrypt it before restoration.  
+
+
 To decrypt manually, you need to install `gnupg`

 ```shell
@@ -21,8 +30,11 @@ gpg --batch --passphrase "my-passphrase" \
 --output database_20240730_044201.sql.gz \
 --decrypt database_20240730_044201.sql.gz.gpg
 ```
-
-### Backup
+Using your private key
+```shell
+gpg --output database_20240730_044201.sql.gz --decrypt database_20240730_044201.sql.gz.gpg
+```
+## Using GPG passphrase

 ```yml
 services:
@@ -49,4 +61,33 @@ services:
      - web
 networks:
  web:
-```
+```
+
+## Using GPG Public Key
+
+```yml
+services:
+  pg-bkup:
+    # In production, it is advised to lock your image tag to a proper
+    # release version instead of using `latest`.
+    # Check https://github.com/jkaninda/pg-bkup/releases
+    # for a list of available releases.
+    image: jkaninda/pg-bkup
+    container_name: pg-bkup
+    command: backup -d database
+    volumes:
+      - ./backup:/backup
+    environment:
+      - DB_PORT=5432
+      - DB_HOST=postgres
+      - DB_NAME=database
+      - DB_USERNAME=username
+      - DB_PASSWORD=password
+      ## Required to encrypt backup
+      - GPG_PUBLIC_KEY=/config/public_key.asc
+    # pg-bkup container must be connected to the same network with your database
+    networks:
+      - web
+networks:
+  web:
+```
--- a/docs/how-tos/mutli-backup.md
+++ b/docs/how-tos/mutli-backup.md
@@ -0,0 +1,64 @@
+---
+title: Run multiple database backup schedules in the same container
+layout: default
+parent: How Tos
+nav_order: 11
+---
+
+Multiple backup schedules with different configuration can be configured by mounting a configuration file into `/config/config.yaml`  `/config/config.yml` or by defining an environment variable `BACKUP_CONFIG_FILE=/backup/config.yaml`.
+
+## Configuration file
+
+```yaml
+#cronExpression: "@every 20m" //Optional, for scheduled backups
+cronExpression: "" 
+databases:
+  - host: postgres1
+    port: 5432
+    name: database1
+    user: database1
+    password: password
+    path: /s3-path/database1 #For SSH or FTP you need to define the full path (/home/toto/backup/)
+  - host: postgres2
+    port: 5432
+    name: lldap
+    user: lldap
+    password: password
+    path: /s3-path/lldap #For SSH or FTP you need to define the full path (/home/toto/backup/)
+  - host: postgres3
+    port: 5432
+    name: keycloak
+    user: keycloak
+    password: password
+    path: /s3-path/keycloak #For SSH or FTP you need to define the full path (/home/toto/backup/)
+  - host: postgres4
+    port: 5432
+    name: joplin
+    user: joplin
+    password: password
+    path: /s3-path/joplin #For SSH or FTP you need to define the full path (/home/toto/backup/)
+```
+
+## Docker compose file
+
+```yaml
+services:
+  pg-bkup:
+    # In production, it is advised to lock your image tag to a proper
+    # release version instead of using `latest`.
+    # Check https://github.com/jkaninda/pg-bkup/releases
+    # for a list of available releases.
+    image: jkaninda/pg-bkup
+    container_name: pg-bkup
+    command: backup
+    volumes:
+      - ./backup:/backup
+    environment:
+      ## Multi backup config file
+      - BACKUP_CONFIG_FILE=/backup/config.yaml
+    # pg-bkup container must be connected to the same network with your database
+    networks:
+      - web
+networks:
+  web:
+```
--- a/docs/reference/index.md
+++ b/docs/reference/index.md
@@ -34,41 +34,42 @@ Backup, restore and migrate targets, schedule and retention are configured using

 ## Environment variables

-| Name                   | Requirement                                                   | Description                                          |
-|------------------------|---------------------------------------------------------------|------------------------------------------------------|
-| DB_PORT                | Optional, default 5432                                        | Database port number                                 |
-| DB_HOST                | Required                                                      | Database host                                        |
-| DB_NAME                | Optional if it was provided from the -d flag                  | Database name                                        |
-| DB_USERNAME            | Required                                                      | Database user name                                   |
-| DB_PASSWORD            | Required                                                      | Database password                                    |
-| AWS_ACCESS_KEY         | Optional, required for S3 storage                             | AWS S3 Access Key                                    |
-| AWS_SECRET_KEY         | Optional, required for S3 storage                             | AWS S3 Secret Key                                    |
-| AWS_BUCKET_NAME        | Optional, required for S3 storage                             | AWS S3 Bucket Name                                   |
-| AWS_BUCKET_NAME        | Optional, required for S3 storage                             | AWS S3 Bucket Name                                   |
-| AWS_REGION             | Optional, required for S3 storage                             | AWS Region                                           |
-| AWS_DISABLE_SSL        | Optional, required for S3 storage                             | Disable SSL                                          |
-| AWS_FORCE_PATH_STYLE   | Optional, required for S3 storage                             | Force path style                                     |
-| FILE_NAME              | Optional if it was provided from the --file flag              | Database file to restore (extensions: .sql, .sql.gz) |
-| GPG_PASSPHRASE         | Optional, required to encrypt and restore backup              | GPG passphrase                                       |
-| BACKUP_CRON_EXPRESSION | Optional if it was provided from the `--cron-expression` flag | Backup cron expression for docker in scheduled mode  |
-| SSH_HOST               | Optional, required for SSH storage                            | ssh remote hostname or ip                            |
-| SSH_USER               | Optional, required for SSH storage                            | ssh remote user                                      |
-| SSH_PASSWORD           | Optional, required for SSH storage                            | ssh remote user's password                           |
-| SSH_IDENTIFY_FILE      | Optional, required for SSH storage                            | ssh remote user's private key                        |
-| SSH_PORT               | Optional, required for SSH storage                            | ssh remote server port                               |
-| REMOTE_PATH            | Optional, required for SSH or FTP storage                     | remote path (/home/toto/backup)                      |
-| FTP_HOST               | Optional, required for FTP storage                            | FTP host name                                        |
-| FTP_PORT               | Optional, required for FTP storage                            | FTP server port number                               |
-| FTP_USER               | Optional, required for FTP storage                            | FTP user                                             |
-| FTP_PASSWORD           | Optional, required for FTP storage                            | FTP user password                                    |
-| TARGET_DB_HOST         | Optional, required for database migration                     | Target database host                                 |
-| TARGET_DB_PORT         | Optional, required for database migration                     | Target database port                                 |
-| TARGET_DB_NAME         | Optional, required for database migration                     | Target database name                                 |
-| TARGET_DB_USERNAME     | Optional, required for database migration                     | Target database username                             |
-| TARGET_DB_PASSWORD     | Optional, required for database migration                     | Target database password                             |
-| TG_TOKEN               | Optional, required for Telegram notification                  | Telegram token (`BOT-ID:BOT-TOKEN`)                  |
-| TG_CHAT_ID             | Optional, required for Telegram notification                  | Telegram Chat ID                                     |
-| TZ                     | Optional                                                      | Time Zone                                            |
+| Name                   | Requirement                                                   | Description                                                     |
+|------------------------|---------------------------------------------------------------|-----------------------------------------------------------------|
+| DB_PORT                | Optional, default 5432                                        | Database port number                                            |
+| DB_HOST                | Required                                                      | Database host                                                   |
+| DB_NAME                | Optional if it was provided from the -d flag                  | Database name                                                   |
+| DB_USERNAME            | Required                                                      | Database user name                                              |
+| DB_PASSWORD            | Required                                                      | Database password                                               |
+| AWS_ACCESS_KEY         | Optional, required for S3 storage                             | AWS S3 Access Key                                               |
+| AWS_SECRET_KEY         | Optional, required for S3 storage                             | AWS S3 Secret Key                                               |
+| AWS_BUCKET_NAME        | Optional, required for S3 storage                             | AWS S3 Bucket Name                                              |
+| AWS_BUCKET_NAME        | Optional, required for S3 storage                             | AWS S3 Bucket Name                                              |
+| AWS_REGION             | Optional, required for S3 storage                             | AWS Region                                                      |
+| AWS_DISABLE_SSL        | Optional, required for S3 storage                             | Disable SSL                                                     |
+| AWS_FORCE_PATH_STYLE   | Optional, required for S3 storage                             | Force path style                                                |
+| FILE_NAME              | Optional if it was provided from the --file flag              | Database file to restore (extensions: .sql, .sql.gz)            |
+| GPG_PASSPHRASE         | Optional, required to encrypt and restore backup              | GPG passphrase                                                  |
+| GPG_PUBLIC_KEY         | Optional, required to encrypt backup                          | GPG public key, used to encrypt backup (/config/public_key.asc) |
+| BACKUP_CRON_EXPRESSION | Optional if it was provided from the `--cron-expression` flag | Backup cron expression for docker in scheduled mode             |
+| SSH_HOST               | Optional, required for SSH storage                            | ssh remote hostname or ip                                       |
+| SSH_USER               | Optional, required for SSH storage                            | ssh remote user                                                 |
+| SSH_PASSWORD           | Optional, required for SSH storage                            | ssh remote user's password                                      |
+| SSH_IDENTIFY_FILE      | Optional, required for SSH storage                            | ssh remote user's private key                                   |
+| SSH_PORT               | Optional, required for SSH storage                            | ssh remote server port                                          |
+| REMOTE_PATH            | Optional, required for SSH or FTP storage                     | remote path (/home/toto/backup)                                 |
+| FTP_HOST               | Optional, required for FTP storage                            | FTP host name                                                   |
+| FTP_PORT               | Optional, required for FTP storage                            | FTP server port number                                          |
+| FTP_USER               | Optional, required for FTP storage                            | FTP user                                                        |
+| FTP_PASSWORD           | Optional, required for FTP storage                            | FTP user password                                               |
+| TARGET_DB_HOST         | Optional, required for database migration                     | Target database host                                            |
+| TARGET_DB_PORT         | Optional, required for database migration                     | Target database port                                            |
+| TARGET_DB_NAME         | Optional, required for database migration                     | Target database name                                            |
+| TARGET_DB_USERNAME     | Optional, required for database migration                     | Target database username                                        |
+| TARGET_DB_PASSWORD     | Optional, required for database migration                     | Target database password                                        |
+| TG_TOKEN               | Optional, required for Telegram notification                  | Telegram token (`BOT-ID:BOT-TOKEN`)                             |
+| TG_CHAT_ID             | Optional, required for Telegram notification                  | Telegram Chat ID                                                |
+| TZ                     | Optional                                                      | Time Zone                                                       |

 ---
 ## Run in Scheduled mode
--- a/go.mod
+++ b/go.mod
@@ -3,21 +3,26 @@ module github.com/jkaninda/pg-bkup
 go 1.21.0

 require (
+	github.com/ProtonMail/gopenpgp/v2 v2.7.5
+	github.com/aws/aws-sdk-go v1.55.3
+	github.com/bramvdbogaerde/go-scp v1.5.0
+	github.com/jlaffaye/ftp v0.2.0
+	github.com/robfig/cron/v3 v3.0.1
 	github.com/spf13/cobra v1.8.0
-	github.com/spf13/pflag v1.0.5
+	golang.org/x/crypto v0.28.0
+	gopkg.in/yaml.v3 v3.0.1
 )

 require (
-	github.com/aws/aws-sdk-go v1.55.3 // indirect
-	github.com/bramvdbogaerde/go-scp v1.5.0 // indirect
+	github.com/ProtonMail/go-crypto v0.0.0-20230717121422-5aa5874ade95 // indirect
+	github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f // indirect
+	github.com/cloudflare/circl v1.3.3 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/hpcloud/tail v1.0.0 // indirect
-	github.com/jlaffaye/ftp v0.2.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
-	github.com/robfig/cron/v3 v3.0.1 // indirect
-	golang.org/x/crypto v0.18.0 // indirect
-	golang.org/x/sys v0.22.0 // indirect
-	gopkg.in/fsnotify.v1 v1.4.7 // indirect
-	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/sys v0.26.0 // indirect
+	golang.org/x/text v0.19.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -1,68 +1,101 @@
+github.com/ProtonMail/go-crypto v0.0.0-20230717121422-5aa5874ade95 h1:KLq8BE0KwCL+mmXnjLWEAOYO+2l2AE4YMmqG1ZpZHBs=
+github.com/ProtonMail/go-crypto v0.0.0-20230717121422-5aa5874ade95/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
+github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f h1:tCbYj7/299ekTTXpdwKYF8eBlsYsDVoggDAuAjoK66k=
+github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f/go.mod h1:gcr0kNtGBqin9zDW9GOHcVntrwnjrK+qdJ06mWYBybw=
+github.com/ProtonMail/gopenpgp/v2 v2.7.5 h1:STOY3vgES59gNgoOt2w0nyHBjKViB/qSg7NjbQWPJkA=
+github.com/ProtonMail/gopenpgp/v2 v2.7.5/go.mod h1:IhkNEDaxec6NyzSI0PlxapinnwPVIESk8/76da3Ct3g=
 github.com/aws/aws-sdk-go v1.55.3 h1:0B5hOX+mIx7I5XPOrjrHlKSDQV/+ypFZpIHOx5LOk3E=
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+github.com/bwesterb/go-ristretto v1.2.3/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=
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-github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
-github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
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 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
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 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
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 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
-github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
-github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
-github.com/klauspost/cpuid/v2 v2.0.1/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
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-github.com/minio/md5-simd v1.1.2/go.mod h1:MzdKDxYpY2BT9XQFocsiZf/NKVtR7nkE4RoEpN+20RM=
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+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
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+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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--- a/pkg/backup.go
+++ b/pkg/backup.go
@@ -20,23 +20,28 @@ import (

 func StartBackup(cmd *cobra.Command) {
 	intro()
-	dbConf = initDbConfig(cmd)
 	//Initialize backup configs
 	config := initBackupConfig(cmd)
-
-	if config.cronExpression == "" {
-		BackupTask(dbConf, config)
-	} else {
-		if utils.IsValidCronExpression(config.cronExpression) {
-			scheduledMode(dbConf, config)
+	//Load backup configuration file
+	configFile, err := loadConfigFile()
+	if err != nil {
+		dbConf = initDbConfig(cmd)
+		if config.cronExpression == "" {
+			BackupTask(dbConf, config)
 		} else {
-			utils.Fatal("Cron expression is not valid: %s", config.cronExpression)
+			if utils.IsValidCronExpression(config.cronExpression) {
+				scheduledMode(dbConf, config)
+			} else {
+				utils.Fatal("Cron expression is not valid: %s", config.cronExpression)
+			}
 		}
+	} else {
+		startMultiBackup(config, configFile)
 	}

 }

-// Run in scheduled mode
+// scheduledMode Runs backup in scheduled mode
 func scheduledMode(db *dbConfig, config *BackupConfig) {
 	utils.Info("Running in Scheduled mode")
 	utils.Info("Backup cron expression:  %s", config.cronExpression)
@@ -63,6 +68,17 @@ func scheduledMode(db *dbConfig, config *BackupConfig) {
 	defer c.Stop()
 	select {}
 }
+
+// multiBackupTask backup multi database
+func multiBackupTask(databases []Database, bkConfig *BackupConfig) {
+	for _, db := range databases {
+		//Check if path is defined in config file
+		if db.Path != "" {
+			bkConfig.remotePath = db.Path
+		}
+		BackupTask(getDatabase(db), bkConfig)
+	}
+}
 func BackupTask(db *dbConfig, config *BackupConfig) {
 	utils.Info("Starting backup task...")
 	//Generate file name
@@ -85,9 +101,54 @@ func BackupTask(db *dbConfig, config *BackupConfig) {
 		localBackup(db, config)
 	}
 }
-func intro() {
-	utils.Info("Starting PostgreSQL Backup...")
-	utils.Info("Copyright (c) 2024 Jonas Kaninda ")
+func startMultiBackup(bkConfig *BackupConfig, configFile string) {
+	utils.Info("Starting multiple backup job...")
+	var conf = &Config{}
+	conf, err := readConf(configFile)
+	if err != nil {
+		utils.Fatal("Error reading config file: %s", err)
+	}
+	//Check if cronExpression is defined in config file
+	if conf.CronExpression != "" {
+		bkConfig.cronExpression = conf.CronExpression
+	}
+	// Check if cronExpression is defined
+	if bkConfig.cronExpression == "" {
+		multiBackupTask(conf.Databases, bkConfig)
+	} else {
+		// Check if cronExpression is valid
+		if utils.IsValidCronExpression(bkConfig.cronExpression) {
+			utils.Info("Running MultiBackup in Scheduled mode")
+			utils.Info("Backup cron expression:  %s", bkConfig.cronExpression)
+			utils.Info("Storage type %s ", bkConfig.storage)
+
+			//Test backup
+			utils.Info("Testing backup configurations...")
+			multiBackupTask(conf.Databases, bkConfig)
+			utils.Info("Testing backup configurations...done")
+			utils.Info("Creating multi backup job...")
+			// Create a new cron instance
+			c := cron.New()
+
+			_, err := c.AddFunc(bkConfig.cronExpression, func() {
+				// Create a channel
+				multiBackupTask(conf.Databases, bkConfig)
+			})
+			if err != nil {
+				return
+			}
+			// Start the cron scheduler
+			c.Start()
+			utils.Info("Creating multi backup job...done")
+			utils.Info("Backup job started")
+			defer c.Stop()
+			select {}
+
+		} else {
+			utils.Fatal("Cron expression is not valid: %s", bkConfig.cronExpression)
+		}
+	}
+
 }

 // BackupDatabase backup database
@@ -119,7 +180,7 @@ func BackupDatabase(db *dbConfig, backupFileName string, disableCompression bool
 			log.Fatal(err)
 		}
 		// save output
-		file, err := os.Create(fmt.Sprintf("%s/%s", tmpPath, backupFileName))
+		file, err := os.Create(filepath.Join(tmpPath, backupFileName))
 		if err != nil {
 			log.Fatal(err)
 		}
@@ -145,7 +206,7 @@ func BackupDatabase(db *dbConfig, backupFileName string, disableCompression bool
 		gzipCmd := exec.Command("gzip")
 		gzipCmd.Stdin = stdout
 		// save output
-		gzipCmd.Stdout, err = os.Create(fmt.Sprintf("%s/%s", tmpPath, backupFileName))
+		gzipCmd.Stdout, err = os.Create(filepath.Join(tmpPath, backupFileName))
 		gzipCmd.Start()
 		if err != nil {
 			log.Fatal(err)
@@ -166,9 +227,10 @@ func localBackup(db *dbConfig, config *BackupConfig) {
 	BackupDatabase(db, config.backupFileName, disableCompression)
 	finalFileName := config.backupFileName
 	if config.encryption {
-		encryptBackup(config.backupFileName, config.passphrase)
+		encryptBackup(config)
 		finalFileName = fmt.Sprintf("%s.%s", config.backupFileName, gpgExtension)
 	}
+
 	utils.Info("Backup name is %s", finalFileName)
 	moveToBackup(finalFileName, storagePath)
 	//Send notification
@@ -179,6 +241,7 @@ func localBackup(db *dbConfig, config *BackupConfig) {
 	}
 	//Delete temp
 	deleteTemp()
+	utils.Info("Backup completed successfully")
 }

 func s3Backup(db *dbConfig, config *BackupConfig) {
@@ -189,7 +252,7 @@ func s3Backup(db *dbConfig, config *BackupConfig) {
 	BackupDatabase(db, config.backupFileName, disableCompression)
 	finalFileName := config.backupFileName
 	if config.encryption {
-		encryptBackup(config.backupFileName, config.passphrase)
+		encryptBackup(config)
 		finalFileName = fmt.Sprintf("%s.%s", config.backupFileName, "gpg")
 	}
 	utils.Info("Uploading backup archive to remote storage S3 ... ")
@@ -219,6 +282,8 @@ func s3Backup(db *dbConfig, config *BackupConfig) {
 	utils.NotifySuccess(finalFileName)
 	//Delete temp
 	deleteTemp()
+	utils.Info("Backup completed successfully")
+
 }
 func sshBackup(db *dbConfig, config *BackupConfig) {
 	utils.Info("Backup database to Remote server")
@@ -226,7 +291,7 @@ func sshBackup(db *dbConfig, config *BackupConfig) {
 	BackupDatabase(db, config.backupFileName, disableCompression)
 	finalFileName := config.backupFileName
 	if config.encryption {
-		encryptBackup(config.backupFileName, config.passphrase)
+		encryptBackup(config)
 		finalFileName = fmt.Sprintf("%s.%s", config.backupFileName, "gpg")
 	}
 	utils.Info("Uploading backup archive to remote storage ... ")
@@ -254,6 +319,8 @@ func sshBackup(db *dbConfig, config *BackupConfig) {
 	utils.NotifySuccess(finalFileName)
 	//Delete temp
 	deleteTemp()
+	utils.Info("Backup completed successfully")
+
 }
 func ftpBackup(db *dbConfig, config *BackupConfig) {
 	utils.Info("Backup database to the remote FTP server")
@@ -261,7 +328,7 @@ func ftpBackup(db *dbConfig, config *BackupConfig) {
 	BackupDatabase(db, config.backupFileName, disableCompression)
 	finalFileName := config.backupFileName
 	if config.encryption {
-		encryptBackup(config.backupFileName, config.passphrase)
+		encryptBackup(config)
 		finalFileName = fmt.Sprintf("%s.%s", config.backupFileName, "gpg")
 	}
 	utils.Info("Uploading backup archive to the remote FTP server ... ")
@@ -289,12 +356,21 @@ func ftpBackup(db *dbConfig, config *BackupConfig) {
 	utils.NotifySuccess(finalFileName)
 	//Delete temp
 	deleteTemp()
+	utils.Info("Backup completed successfully")
 }

-func encryptBackup(backupFileName, gpqPassphrase string) {
-	err := Encrypt(filepath.Join(tmpPath, backupFileName), gpqPassphrase)
-	if err != nil {
-		utils.Fatal("Error during encrypting backup %v", err)
+func encryptBackup(config *BackupConfig) {
+	if config.usingKey {
+		err := encryptWithGPGPublicKey(filepath.Join(tmpPath, config.backupFileName), config.publicKey)
+		if err != nil {
+			utils.Fatal("error during encrypting backup %v", err)
+		}
+	} else if config.passphrase != "" {
+		err := encryptWithGPG(filepath.Join(tmpPath, config.backupFileName), config.passphrase)
+		if err != nil {
+			utils.Fatal("error during encrypting backup %v", err)
+		}
+
 	}

 }
--- a/pkg/config.go
+++ b/pkg/config.go
@@ -14,7 +14,17 @@ import (
 	"strconv"
 )

+type Database struct {
+	Host     string `yaml:"host"`
+	Port     string `yaml:"port"`
+	Name     string `yaml:"name"`
+	User     string `yaml:"user"`
+	Password string `yaml:"password"`
+	Path     string `yaml:"path"`
+}
 type Config struct {
+	Databases      []Database `yaml:"databases"`
+	CronExpression string     `yaml:"cronExpression"`
 }

 type dbConfig struct {
@@ -40,9 +50,11 @@ type BackupConfig struct {
 	backupRetention    int
 	disableCompression bool
 	prune              bool
-	encryption         bool
 	remotePath         string
+	encryption         bool
+	usingKey           bool
 	passphrase         string
+	publicKey          string
 	storage            string
 	cronExpression     string
 }
@@ -90,6 +102,16 @@ func initDbConfig(cmd *cobra.Command) *dbConfig {
 	return &dConf
 }

+func getDatabase(database Database) *dbConfig {
+	return &dbConfig{
+		dbHost:     database.Host,
+		dbPort:     database.Port,
+		dbName:     database.Name,
+		dbUserName: database.User,
+		dbPassword: database.Password,
+	}
+}
+
 // loadSSHConfig loads the SSH configuration from environment variables
 func loadSSHConfig() (*SSHConfig, error) {
 	utils.GetEnvVariable("SSH_HOST", "SSH_HOST_NAME")
@@ -163,10 +185,14 @@ func initBackupConfig(cmd *cobra.Command) *BackupConfig {
 	_ = utils.GetEnv(cmd, "path", "AWS_S3_PATH")
 	cronExpression := os.Getenv("BACKUP_CRON_EXPRESSION")

-	if passphrase != "" {
+	publicKeyFile, err := checkPubKeyFile(os.Getenv("GPG_PUBLIC_KEY"))
+	if err == nil {
 		encryption = true
+		usingKey = true
+	} else if passphrase != "" {
+		encryption = true
+		usingKey = false
 	}
-
 	//Initialize backup configs
 	config := BackupConfig{}
 	config.backupRetention = backupRetention
@@ -176,17 +202,21 @@ func initBackupConfig(cmd *cobra.Command) *BackupConfig {
 	config.encryption = encryption
 	config.remotePath = remotePath
 	config.passphrase = passphrase
+	config.publicKey = publicKeyFile
+	config.usingKey = usingKey
 	config.cronExpression = cronExpression
 	return &config
 }

 type RestoreConfig struct {
-	s3Path        string
-	remotePath    string
-	storage       string
-	file          string
-	bucket        string
-	gpqPassphrase string
+	s3Path     string
+	remotePath string
+	storage    string
+	file       string
+	bucket     string
+	usingKey   bool
+	passphrase string
+	privateKey string
 }

 func initRestoreConfig(cmd *cobra.Command) *RestoreConfig {
@@ -199,7 +229,14 @@ func initRestoreConfig(cmd *cobra.Command) *RestoreConfig {
 	storage = utils.GetEnv(cmd, "storage", "STORAGE")
 	file = utils.GetEnv(cmd, "file", "FILE_NAME")
 	bucket := utils.GetEnvVariable("AWS_S3_BUCKET_NAME", "BUCKET_NAME")
-	gpqPassphrase := os.Getenv("GPG_PASSPHRASE")
+	passphrase := os.Getenv("GPG_PASSPHRASE")
+	privateKeyFile, err := checkPrKeyFile(os.Getenv("GPG_PRIVATE_KEY"))
+	if err == nil {
+		usingKey = true
+	} else if passphrase != "" {
+		usingKey = false
+	}
+
 	//Initialize restore configs
 	rConfig := RestoreConfig{}
 	rConfig.s3Path = s3Path
@@ -208,7 +245,9 @@ func initRestoreConfig(cmd *cobra.Command) *RestoreConfig {
 	rConfig.bucket = bucket
 	rConfig.file = file
 	rConfig.storage = storage
-	rConfig.gpqPassphrase = gpqPassphrase
+	rConfig.passphrase = passphrase
+	rConfig.usingKey = usingKey
+	rConfig.privateKey = privateKeyFile
 	return &rConfig
 }
 func initTargetDbConfig() *targetDbConfig {
@@ -226,3 +265,10 @@ func initTargetDbConfig() *targetDbConfig {
 	}
 	return &tdbConfig
 }
+func loadConfigFile() (string, error) {
+	backupConfigFile, err := checkConfigFile(os.Getenv("BACKUP_CONFIG_FILE"))
+	if err == nil {
+		return backupConfigFile, nil
+	}
+	return "", fmt.Errorf("backup config file not found")
+}
--- a/pkg/encrypt.go
+++ b/pkg/encrypt.go
@@ -7,54 +7,173 @@
 package pkg

 import (
+	"errors"
+	"fmt"
+	"github.com/ProtonMail/gopenpgp/v2/crypto"
 	"github.com/jkaninda/pg-bkup/utils"
 	"os"
-	"os/exec"
 	"strings"
 )

-func Decrypt(inputFile string, passphrase string) error {
-	utils.Info("Decrypting backup file: %s...", inputFile)
-	//Create gpg home dir
-	err := utils.MakeDirAll(gpgHome)
+// decryptWithGPG decrypts backup file using a passphrase
+func decryptWithGPG(inputFile string, passphrase string) error {
+	utils.Info("Decrypting backup using passphrase...")
+	// Read the encrypted file
+	encFileContent, err := os.ReadFile(inputFile)
 	if err != nil {
-		return err
+		return errors.New(fmt.Sprintf("Error reading encrypted file: %s", err))
 	}
-	utils.SetEnv("GNUPGHOME", gpgHome)
-	cmd := exec.Command("gpg", "--batch", "--passphrase", passphrase, "--output", RemoveLastExtension(inputFile), "--decrypt", inputFile)
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-
-	err = cmd.Run()
+	// Define the passphrase used to encrypt the file
+	_passphrase := []byte(passphrase)
+	// Create a PGP message object from the encrypted file content
+	encryptedMessage := crypto.NewPGPMessage(encFileContent)
+	// Decrypt the message using the passphrase
+	plainMessage, err := crypto.DecryptMessageWithPassword(encryptedMessage, _passphrase)
 	if err != nil {
-		return err
+		return errors.New(fmt.Sprintf("Error decrypting file: %s", err))
 	}

+	// Save the decrypted file (restore it)
+	err = os.WriteFile(RemoveLastExtension(inputFile), plainMessage.GetBinary(), 0644)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error saving decrypted file: %s", err))
+	}
+	utils.Info("Decrypting backup using passphrase...done")
 	utils.Info("Backup file decrypted successful!")
 	return nil
 }

-func Encrypt(inputFile string, passphrase string) error {
-	utils.Info("Encrypting backup...")
-	//Create gpg home dir
-	err := utils.MakeDirAll(gpgHome)
+// encryptWithGPG encrypts backup using a passphrase
+func encryptWithGPG(inputFile string, passphrase string) error {
+	utils.Info("Encrypting backup using passphrase...")
+	// Read the file to be encrypted
+	plainFileContent, err := os.ReadFile(inputFile)
 	if err != nil {
-		return err
+		return errors.New(fmt.Sprintf("Error reading file: %s", err))
 	}
-	utils.SetEnv("GNUPGHOME", gpgHome)
-	cmd := exec.Command("gpg", "--batch", "--passphrase", passphrase, "--symmetric", "--cipher-algo", algorithm, inputFile)
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
+	// Define the passphrase to encrypt the file
+	_passphrase := []byte(passphrase)

-	err = cmd.Run()
+	// Create a message object from the file content
+	message := crypto.NewPlainMessage(plainFileContent)
+	// Encrypt the message using the passphrase
+	encryptedMessage, err := crypto.EncryptMessageWithPassword(message, _passphrase)
 	if err != nil {
-		return err
+		return errors.New(fmt.Sprintf("Error encrypting backup file: %s", err))
 	}
-
+	// Save the encrypted .tar file
+	err = os.WriteFile(fmt.Sprintf("%s.%s", inputFile, gpgExtension), encryptedMessage.GetBinary(), 0644)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error saving encrypted filee: %s", err))
+	}
+	utils.Info("Encrypting backup using passphrase...done")
 	utils.Info("Backup file encrypted successful!")
 	return nil
 }

+// encryptWithGPGPublicKey encrypts backup using a public key
+func encryptWithGPGPublicKey(inputFile string, publicKey string) error {
+	utils.Info("Encrypting backup using public key...")
+	// Read the public key
+	pubKeyBytes, err := os.ReadFile(publicKey)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error reading public key: %s", err))
+	}
+	// Create a new keyring with the public key
+	publicKeyObj, err := crypto.NewKeyFromArmored(string(pubKeyBytes))
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error parsing public key: %s", err))
+	}
+
+	keyRing, err := crypto.NewKeyRing(publicKeyObj)
+	if err != nil {
+
+		return errors.New(fmt.Sprintf("Error creating key ring: %v", err))
+	}
+
+	// Read the file to encryptWithGPGPublicKey
+	fileContent, err := os.ReadFile(inputFile)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error reading file: %v", err))
+	}
+
+	// encryptWithGPG the file
+	message := crypto.NewPlainMessage(fileContent)
+	encMessage, err := keyRing.Encrypt(message, nil)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error encrypting file: %v", err))
+	}
+
+	// Save the encrypted file
+	err = os.WriteFile(fmt.Sprintf("%s.%s", inputFile, gpgExtension), encMessage.GetBinary(), 0644)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error saving encrypted file: %v", err))
+	}
+	utils.Info("Encrypting backup using public key...done")
+	utils.Info("Backup file encrypted successful!")
+	return nil
+
+}
+
+// decryptWithGPGPrivateKey decrypts backup file using a private key and passphrase.
+// privateKey GPG private key
+// passphrase GPG passphrase
+func decryptWithGPGPrivateKey(inputFile, privateKey, passphrase string) error {
+	utils.Info("Encrypting backup using private key...")
+
+	// Read the private key
+	priKeyBytes, err := os.ReadFile(privateKey)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error reading private key: %s", err))
+	}
+
+	// Read the password for the private key (if it’s password-protected)
+	password := []byte(passphrase)
+
+	// Create a key object from the armored private key
+	privateKeyObj, err := crypto.NewKeyFromArmored(string(priKeyBytes))
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error parsing private key: %s", err))
+	}
+
+	// Unlock the private key with the password
+	if passphrase != "" {
+		// Unlock the private key with the password
+		_, err = privateKeyObj.Unlock(password)
+		if err != nil {
+			return errors.New(fmt.Sprintf("Error unlocking private key: %s", err))
+		}
+
+	}
+
+	// Create a new keyring with the private key
+	keyRing, err := crypto.NewKeyRing(privateKeyObj)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error creating key ring: %v", err))
+	}
+
+	// Read the encrypted file
+	encFileContent, err := os.ReadFile(inputFile)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error reading encrypted file: %s", err))
+	}
+
+	// decryptWithGPG the file
+	encryptedMessage := crypto.NewPGPMessage(encFileContent)
+	message, err := keyRing.Decrypt(encryptedMessage, nil, 0)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error decrypting file: %s", err))
+	}
+
+	// Save the decrypted file
+	err = os.WriteFile(RemoveLastExtension(inputFile), message.GetBinary(), 0644)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Error saving decrypted file: %s", err))
+	}
+	utils.Info("Encrypting backup using public key...done")
+	fmt.Println("File successfully decrypted!")
+	return nil
+}
 func RemoveLastExtension(filename string) string {
 	if idx := strings.LastIndex(filename, "."); idx != -1 {
 		return filename[:idx]
--- a/pkg/helper.go
+++ b/pkg/helper.go
@@ -8,13 +8,21 @@ package pkg

 import (
 	"bytes"
+	"fmt"
 	"github.com/jkaninda/pg-bkup/utils"
+	"gopkg.in/yaml.v3"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"time"
 )

+func intro() {
+	utils.Info("Starting PostgreSQL Backup...")
+	utils.Info("Copyright (c) 2024 Jonas Kaninda ")
+}
+
+// copyToTmp copy file to temporary directory
 func copyToTmp(sourcePath string, backupFileName string) {
 	//Copy backup from storage to /tmp
 	err := utils.CopyFile(filepath.Join(sourcePath, backupFileName), filepath.Join(tmpPath, backupFileName))
@@ -137,3 +145,91 @@ func testDatabaseConnection(db *dbConfig) {
 	utils.Info("Successfully connected to %s database", db.dbName)

 }
+
+// checkPubKeyFile checks gpg public key
+func checkPubKeyFile(pubKey string) (string, error) {
+	// Define possible key file names
+	keyFiles := []string{filepath.Join(gpgHome, "public_key.asc"), filepath.Join(gpgHome, "public_key.gpg"), pubKey}
+
+	// Loop through key file names and check if they exist
+	for _, keyFile := range keyFiles {
+		if _, err := os.Stat(keyFile); err == nil {
+			// File exists
+			return keyFile, nil
+		} else if os.IsNotExist(err) {
+			// File does not exist, continue to the next one
+			continue
+		} else {
+			// An unexpected error occurred
+			return "", err
+		}
+	}
+
+	// Return an error if neither file exists
+	return "", fmt.Errorf("no public key file found")
+}
+
+// checkPrKeyFile checks private key
+func checkPrKeyFile(prKey string) (string, error) {
+	// Define possible key file names
+	keyFiles := []string{filepath.Join(gpgHome, "private_key.asc"), filepath.Join(gpgHome, "private_key.gpg"), prKey}
+
+	// Loop through key file names and check if they exist
+	for _, keyFile := range keyFiles {
+		if _, err := os.Stat(keyFile); err == nil {
+			// File exists
+			return keyFile, nil
+		} else if os.IsNotExist(err) {
+			// File does not exist, continue to the next one
+			continue
+		} else {
+			// An unexpected error occurred
+			return "", err
+		}
+	}
+
+	// Return an error if neither file exists
+	return "", fmt.Errorf("no public key file found")
+}
+
+// readConf reads config file and returns Config
+func readConf(configFile string) (*Config, error) {
+	if utils.FileExists(configFile) {
+		buf, err := os.ReadFile(configFile)
+		if err != nil {
+			return nil, err
+		}
+
+		c := &Config{}
+		err = yaml.Unmarshal(buf, c)
+		if err != nil {
+			return nil, fmt.Errorf("in file %q: %w", configFile, err)
+		}
+
+		return c, err
+	}
+	return nil, fmt.Errorf("config file %q not found", configFile)
+}
+
+// checkConfigFile checks config files and returns one config file
+func checkConfigFile(filePath string) (string, error) {
+	// Define possible config file names
+	configFiles := []string{filepath.Join(workingDir, "config.yaml"), filepath.Join(workingDir, "config.yml"), filePath}
+
+	// Loop through config file names and check if they exist
+	for _, configFile := range configFiles {
+		if _, err := os.Stat(configFile); err == nil {
+			// File exists
+			return configFile, nil
+		} else if os.IsNotExist(err) {
+			// File does not exist, continue to the next one
+			continue
+		} else {
+			// An unexpected error occurred
+			return "", err
+		}
+	}
+
+	// Return an error if neither file exists
+	return "", fmt.Errorf("no config file found")
+}
--- a/pkg/migrate.go
+++ b/pkg/migrate.go
@@ -30,11 +30,13 @@ func StartMigration(cmd *cobra.Command) {

 	//Generate file name
 	backupFileName := fmt.Sprintf("%s_%s.sql", dbConf.dbName, time.Now().Format("20060102_150405"))
+	conf := &RestoreConfig{}
+	conf.file = backupFileName
 	//Backup source Database
 	BackupDatabase(dbConf, backupFileName, true)
 	//Restore source database into target database
 	utils.Info("Restoring [%s] database into [%s] database...", dbConf.dbName, targetDbConf.targetDbName)
-	RestoreDatabase(&newDbConfig, backupFileName)
+	RestoreDatabase(&newDbConfig, conf)
 	utils.Info("[%s] database has been restored into [%s] database", dbConf.dbName, targetDbConf.targetDbName)
 	utils.Info("Database migration completed.")
 }
--- a/pkg/restore.go
+++ b/pkg/restore.go
@@ -7,7 +7,6 @@
 package pkg

 import (
-	"fmt"
 	"github.com/jkaninda/pg-bkup/utils"
 	"github.com/spf13/cobra"
 	"os"
@@ -24,75 +23,77 @@ func StartRestore(cmd *cobra.Command) {
 	case "local":
 		utils.Info("Restore database from local")
 		copyToTmp(storagePath, restoreConf.file)
-		RestoreDatabase(dbConf, restoreConf.file)
+		RestoreDatabase(dbConf, restoreConf)
 	case "s3", "S3":
-		restoreFromS3(dbConf, restoreConf.file, restoreConf.bucket, restoreConf.s3Path)
+		restoreFromS3(dbConf, restoreConf)
 	case "ssh", "SSH", "remote":
-		restoreFromRemote(dbConf, restoreConf.file, restoreConf.remotePath)
+		restoreFromRemote(dbConf, restoreConf)
 	case "ftp", "FTP":
-		restoreFromFTP(dbConf, restoreConf.file, restoreConf.remotePath)
+		restoreFromFTP(dbConf, restoreConf)
 	default:
 		utils.Info("Restore database from local")
 		copyToTmp(storagePath, restoreConf.file)
-		RestoreDatabase(dbConf, restoreConf.file)
+		RestoreDatabase(dbConf, restoreConf)
 	}
 }

-func restoreFromS3(db *dbConfig, file, bucket, s3Path string) {
+func restoreFromS3(db *dbConfig, conf *RestoreConfig) {
 	utils.Info("Restore database from s3")
-	err := DownloadFile(tmpPath, file, bucket, s3Path)
+	err := DownloadFile(tmpPath, conf.file, conf.bucket, conf.s3Path)
 	if err != nil {
-		utils.Fatal("Error download file from s3 %s %v ", file, err)
+		utils.Fatal("Error download file from s3 %s %v ", conf.file, err)
 	}
-	RestoreDatabase(db, file)
+	RestoreDatabase(db, conf)
 }
-func restoreFromRemote(db *dbConfig, file, remotePath string) {
+func restoreFromRemote(db *dbConfig, conf *RestoreConfig) {
 	utils.Info("Restore database from remote server")
-	err := CopyFromRemote(file, remotePath)
+	err := CopyFromRemote(conf.file, conf.remotePath)
 	if err != nil {
-		utils.Fatal("Error download file from remote server: %s %v", filepath.Join(remotePath, file), err)
+		utils.Fatal("Error download file from remote server: %s %v", filepath.Join(conf.remotePath, conf.file), err)
 	}
-	RestoreDatabase(db, file)
+	RestoreDatabase(db, conf)
 }
-func restoreFromFTP(db *dbConfig, file, remotePath string) {
+func restoreFromFTP(db *dbConfig, conf *RestoreConfig) {
 	utils.Info("Restore database from FTP server")
-	err := CopyFromFTP(file, remotePath)
+	err := CopyFromFTP(conf.file, conf.remotePath)
 	if err != nil {
-		utils.Fatal("Error download file from FTP server: %s %v", filepath.Join(remotePath, file), err)
+		utils.Fatal("Error download file from FTP server: %s %v", filepath.Join(conf.remotePath, conf.file), err)
 	}
-	RestoreDatabase(db, file)
+	RestoreDatabase(db, conf)
 }

 // RestoreDatabase restore database
-func RestoreDatabase(db *dbConfig, file string) {
-	gpgPassphrase := os.Getenv("GPG_PASSPHRASE")
-	if file == "" {
+func RestoreDatabase(db *dbConfig, conf *RestoreConfig) {
+	if conf.file == "" {
 		utils.Fatal("Error, file required")
 	}
-	extension := filepath.Ext(fmt.Sprintf("%s/%s", tmpPath, file))
+	extension := filepath.Ext(filepath.Join(tmpPath, conf.file))
 	if extension == ".gpg" {
-		if gpgPassphrase == "" {
-			utils.Fatal("Error: GPG passphrase is required, your file seems to be a GPG file.\nYou need to provide GPG keys. GPG_PASSPHRASE environment variable is required.")

-		} else {
-			//Decrypt file
-			err := Decrypt(filepath.Join(tmpPath, file), gpgPassphrase)
+		if conf.usingKey {
+			utils.Warn("Backup decryption using a private key is not fully supported")
+			err := decryptWithGPGPrivateKey(filepath.Join(tmpPath, conf.file), conf.privateKey, conf.passphrase)
 			if err != nil {
-				utils.Fatal("Error decrypting file %s %v", file, err)
+				utils.Fatal("error during decrypting backup %v", err)
+			}
+		} else {
+			if conf.passphrase == "" {
+				utils.Error("Error, passphrase or private key required")
+				utils.Fatal("Your file seems to be a GPG file.\nYou need to provide GPG keys. GPG_PASSPHRASE or GPG_PRIVATE_KEY environment variable is required.")
+			} else {
+				//decryptWithGPG file
+				err := decryptWithGPG(filepath.Join(tmpPath, conf.file), conf.passphrase)
+				if err != nil {
+					utils.Fatal("Error decrypting file %s %v", file, err)
+				}
+				//Update file name
+				conf.file = RemoveLastExtension(file)
 			}
-			//Update file name
-			file = RemoveLastExtension(file)
 		}

 	}

-	err := utils.CheckEnvVars(dbHVars)
-	if err != nil {
-		utils.Error("Please make sure all required environment variables for database are set")
-		utils.Fatal("Error checking environment variables: %s", err)
-	}
-
-	if utils.FileExists(fmt.Sprintf("%s/%s", tmpPath, file)) {
+	if utils.FileExists(filepath.Join(tmpPath, conf.file)) {

 		err := os.Setenv("PGPASSWORD", db.dbPassword)
 		if err != nil {
@@ -101,10 +102,10 @@ func RestoreDatabase(db *dbConfig, file string) {
 		testDatabaseConnection(db)
 		utils.Info("Restoring database...")

-		extension := filepath.Ext(file)
+		extension := filepath.Ext(conf.file)
 		// Restore from compressed file / .sql.gz
 		if extension == ".gz" {
-			str := "zcat " + filepath.Join(tmpPath, file) + " | psql -h " + db.dbHost + " -p " + db.dbPort + " -U " + db.dbUserName + " -v -d " + db.dbName
+			str := "zcat " + filepath.Join(tmpPath, conf.file) + " | psql -h " + db.dbHost + " -p " + db.dbPort + " -U " + db.dbUserName + " -v -d " + db.dbName
 			_, err := exec.Command("sh", "-c", str).Output()
 			if err != nil {
 				utils.Fatal("Error, in restoring the database %v", err)
@@ -116,7 +117,7 @@ func RestoreDatabase(db *dbConfig, file string) {

 		} else if extension == ".sql" {
 			//Restore from sql file
-			str := "cat " + filepath.Join(tmpPath, file) + " | psql -h " + db.dbHost + " -p " + db.dbPort + " -U " + db.dbUserName + " -v -d " + db.dbName
+			str := "cat " + filepath.Join(tmpPath, conf.file) + " | psql -h " + db.dbHost + " -p " + db.dbPort + " -U " + db.dbUserName + " -v -d " + db.dbName
 			_, err := exec.Command("sh", "-c", str).Output()
 			if err != nil {
 				utils.Fatal("Error in restoring the database %v", err)
@@ -130,6 +131,6 @@ func RestoreDatabase(db *dbConfig, file string) {
 		}

 	} else {
-		utils.Fatal("File not found in %s", fmt.Sprintf("%s/%s", tmpPath, file))
+		utils.Fatal("File not found in %s", filepath.Join(tmpPath, conf.file))
 	}
 }
--- a/pkg/var.go
+++ b/pkg/var.go
@@ -16,8 +16,10 @@ var (
 	file    = ""

 	storagePath        = "/backup"
+	workingDir         = "/config"
 	disableCompression = false
 	encryption         = false
+	usingKey           = false
 )

 // dbHVars Required environment variables for database
--- a/utils/constant.go
+++ b/utils/constant.go
@@ -6,11 +6,11 @@
 **/
 package utils

-const RestoreExample = "pg-bkup restore --dbname database --file db_20231219_022941.sql.gz\n" +
+const RestoreExample = "restore --dbname database --file db_20231219_022941.sql.gz\n" +
 	"restore --dbname database --storage s3 --path /custom-path --file db_20231219_022941.sql.gz"
-const BackupExample = "pg-bkup backup --dbname database --disable-compression\n" +
+const BackupExample = "backup --dbname database --disable-compression\n" +
 	"backup --dbname database --storage s3 --path /custom-path --disable-compression"

-const MainExample = "pg-bkup backup --dbname database --disable-compression\n" +
+const MainExample = "backup --dbname database --disable-compression\n" +
 	"backup --dbname database --storage s3 --path /custom-path\n" +
 	"restore --dbname database --file db_20231219_022941.sql.gz"
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -20,6 +20,7 @@ import (
 	"strconv"
 )

+// FileExists checks if the file does exist
 func FileExists(filename string) bool {
 	info, err := os.Stat(filename)
 	if os.IsNotExist(err) {