Version: 7.x

Upgrade a major version

Upgrade from 6.x to 7.x

Step 1: Update deploy.php

Change config hostname to alias.
Change config real_hostname to hostname.
Change config user to remote_user.
Update host() definitions:
1. Add set prefix to all setters: identityFile -> setIdentityFile or set('identity_file')
2. Update host(...)->addSshOption('UserKnownHostsFile', '/dev/null') to host(...)->setSshArguments(['-o UserKnownHostsFile=/dev/null']);
3. Replace stage with labels, i.e.
```
host('deployer.org')
    ->set('labels', ['stage' => 'prod']);
```
  When deploying instead of dep deploy prod use dep deploy stage=prod.
4. alias() is deleted, host() itself sets alias and hostname, to override hostname use setHostname().

Update task() definitions.

Replace onRoles() with select():
```
task(...)
    ->select('stage=prod');
```

Don't use string-based task definition, it's not available anymore. Don't forget to set correct working directory.

# from
task('deploy:npm-install', 'npm clean-install');

# to
task('deploy:npm-install', function() {
    cd('{{release_path}}');
    run('npm clean-install');
});

Third party recipes now live inside main Deployer repo in contrib:
```
require 'contrib/rsync.php';
```

Replace inventory() with import(). It now can import hosts, configs, tasks:

import: recipe/common.php

config:
  application: deployer
  shared_dirs:
    - uploads
    - storage/logs/
    - storage/db
  shared_files:
    - .env
    - config/test.yaml
  keep_releases: 3
  http_user: false

hosts:
  prod:
    local: true

tasks:
  deploy:
    - deploy:prepare
    - deploy:vendors
    - deploy:publish

  deploy:vendors:
    - run: "cd {{release_path}} && echo {{bin/composer}} {{composer_options}} 2>&1"

Rename task success to deploy:success and cleanup to deploy:cleanup.
Verbosity functions (isDebug(), etc) got deleted. Use output()->isDebug() instead.
runLocally() commands are executed relative to the recipe file directory. This behaviour can be overridden via an environment variable:
```
DEPLOYER_ROOT=. vendor/bin/dep taskname`
```
Replace local() tasks with combination of once() and runLocally() func.
Replace locateBinaryPath() with which() func.
Configuration property default_stage is not supported anymore and has been dropped.
Replace onHosts() and onStage() with labels & selectors.
Replace setPrivate() with hidden().
Configuration property writable_recursive defaults to false. This behaviour can be overridden with:
```
set('writable_recursive', true);
```
.git directory is not present in release directory anymore. The previous behavior can be restored with:
```
set('update_code_strategy', 'clone');
```

Step 2: Deploy

Since the release history numbering is not compatible between v6 and v7, you need to specify the release_name manually for the first time. Otherwise you start with release 1.

Find out next release name (ssh to the host, ls releases dir, find the biggest number). Example: 42.
Deploy with release_name:
```
dep deploy -o release_name=43
```

note

In case a rollback is needed, manually change the current symlink:

ln -nfs releases/42 current

note

In case there are multiple hosts with different release names, you should create a {{deploy_path}}/.dep/latest_release file in each host with the current release number of that particular host.

Upgrade from 5.x to 6.x

Changed branch option priority
If you have host definition with branch(...) parameter, adding --branch option will not override it any more. If no branch(...) parameter persists, branch will be fetched from current local git branch.
```
host('prod')
    ->set('branch', 'production')
```
In order to return to old behavior add checking of --branch option.
```
host('prod')
    ->set('branch', function () {
        return input()->getOption('branch') ?: 'production';
    })
```
Add deploy:info task to the beginning to deploy task.
run returns string instead of Deployer\Type\Result
Now run and runLocally returns string instead of Deployer\Type\Result. Replace method calls as:
- run('command')->toString() → run('command')
- run('if command; then echo "true"; fi;')->toBool() → test('command')
env_vars renamed to env
- set('env_vars', 'FOO=bar'); → set('env', ['FOO' => 'bar']);
If your are using Symfony recipe, then you need to change env setting:
- set('env', 'prod'); → set('symfony_env', 'prod');

Upgrade from 4.x to 5.x

Servers to Hosts
- server($hostname) to host($hostname), and server($name, $hostname) to host($name)->hostname($hostname)
- localServer($name) to localhost()
- cluster($name, $nodes, $port) to hosts(...$hodes)
- serverList($file) to inventory($file)
If you need to deploy to same server use host aliases:
```
host('domain.com/green', 'domain.com/blue')
    ->set('deploy_path', '~/{{hostname}}')
    ...
```
Or you can define different hosts with same hostname:
```
host('production')
    ->hostname('domain.com')
    ->set('deploy_path', '~/production')
    ...

host('beta')
    ->hostname('domain.com')
    ->set('deploy_path', '~/beta')
    ...
```
Configuration options
- Rename {{server.name}} to {{hostname}}
DotArray syntax
In v5 access to nested arrays in config via dot notation was removed. If you was using it, consider to move to plain config options.
Refactor this:
```
set('a', ['b' => 1]);

// ...

get('a.b');
```
To:
```
set('a_b', 1);

// ...

get('a_b');
```
Credentials
Best practice in new v5 is to omit credentials for connection in deploy.php and write them in ~/.ssh/config instead.
- identityFile($publicKeyFile,, $privateKeyFile, $passPhrase) to identityFile($privateKeyFile)
- pemFile($pemFile) to identityFile($pemFile)
- forwardAgent() to forwardAgent(true)
Tasks constraints
- onlyOn to onHosts
- onlyOnStage to onStage

Upgrade from 3.x to 4.x

Namespace for functions
Add to beginning of deploy.php next line:
```
use function Deployer\{server, task, run, set, get, add, before, after};
```
If you are using PHP version less than 5.6, you can use this:
```
namespace Deployer;
```
env() to set()/get()
Rename all calls env($name, $value) to set($name, $value).
Rename all rvalue env($name) to get($name).
Rename all server(...)->env(...) to server(...)->set(...).
Moved NonFatalException
Rename Deployer\Task\NonFatalException to Deployer\Exception\NonFatalException.
Prior release cleanup
Due to changes in release management, the new cleanup task will ignore any prior releases deployed with 3.x. These will need to be manually removed after migrating to and successfully releasing via 4.x.

Upgrade from 2.x to 3.x

`->path('...')`

Replace your server paths configuration:

server(...)
  ->path(...);

to:

server(...)
  ->env('deploy_path', '...');

Upgrade a major version

Upgrade from 6.x to 7.x​

Step 1: Update deploy.php​

Step 2: Deploy​

Upgrade from 5.x to 6.x​

Upgrade from 4.x to 5.x​

Upgrade from 3.x to 4.x​

Upgrade from 2.x to 3.x​

->path('...')​