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WildFly Documentation. Releases. WildFly Release, Java EE Version Final · Java EE 8 · Final · Java EE 7 (and full EE8 Preview) · Final. This guide depicts the configuration of Centos and Wildfly For information on the latest features included with Java 8, please refer to. JBoss Administration Wildfly book guide. Published: January Author: Francesco Marchioni. Pages: eBook (PDF) Price: €.

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Before continuing, you should know how to download, install and run WildFly 8. For more information on these steps, refer here: Getting Started Guide. Management API & Admin Console with Tomcat, JBoss, GlassFish, Jetty and Other. 8%. Websphere. 7%. Glassfish. 8%. Tomcat. 33%. Jetty. 8%. JBoss. The examples in this guide are largely expressed as XML JSON and DMR output. By default the CLI prints operation results using the.

It allow an admin to automate the whole setup his application server. For example, you can build your own simplified admin console in pure JavaScript. All in one, the greatest thing is that the different tools are really consistent : same data and same logic to manipulate these data. What tips would you give for users coming new to WildFly? If you know JBoss AS 7, it will be easy. WildFly 8 is just the next version. Read the changelog and everything will be fne.

Over the past 5 years, he has started an IT portal focused on JBoss products http: Print Book Price: Additionally, an excerpt from Chapter 5 is available on Java Code Geeks.

WildFly 8 Book Published: January Author: Francesco Marchioni Pages: The only WildFly book that is constantly updated.

WildFly 8 Book | eBooks

What you will learn from this book: Adding users to the properties files is the primary purpose of this utility. Usernames can only contain the following characters in any number and in any order:.

Here we have added a new Management User called adminUser , as you can see some of the questions offer default responses so you can just press enter without repeating the default value. For now just answer n or no to the final question, adding users to be used by processes is described in more detail in the domain management chapter. To add a user in non-interactive mode the command.

When adding application users in addition to adding the user with their pre-hashed password it is also now possible to define the roles of the user. Here a new user called appUser has been added, in this case a comma separated list of roles has also been specified. As with adding a management user just answer n or no to the final question until you know you are adding a user that will be establishing a connection from one server to another.

To add an application user non-interactively use the command. Within the add-user utility it is also possible to update existing users, in interactive mode you will be prompted to confirm if this is your intention. In non-interactive mode if a user already exists the update is automatic with no confirmation prompt. There are still a few features to add to the add-user utility such as removing users or adding application users with roles in non-interactive mode, if you are interested in contributing to WildFly development the add-user utility is a good place to start as it is a stand alone utility, however it is a part of the AS build so you can become familiar with the AS development processes without needing to delve straight into the internals of the application server.

When running in standalone mode the following is the default configuration:. The server identities section of a realm definition is used to define how a server appears to the outside world, currently this element can be used to configure a password to be used when establishing a remote outbound connection and also how to load a X.

The authentication element is predominantly used to configure the authentication that is performed on an inbound connection, however there is one exception and that is if a trust store is defined - on negotiating an outbound SSL connection the trust store will be used to verify the remote server.

This element is used to define how to load a key store file that can be used as the trust store within the SSLContext we create internally, the store is then used to verify the certificates of the remote side of the connection be that inbound or outbound. This element switches on the local authentication mechanism that allows clients to the server to verify that they are local to the server, at the protocol level it is optional for the remote client to send a user name in the authentication response.

The jaas element is used to enable username and password based authentication where the supplied username and password are verified by making use of a configured jaas domain. The ldap element is used to define how LDAP searches will be used to authenticate a user, this works by first connecting to LDAP and performing a search using the supplied user name to identity the distinguished name of the user and then a subsequent connection is made to the server using the password supplied by the user - if this second connection is a success then authentication succeeds.

Defaults to false. This element is used where a more advanced filter is required, one example use of this filter is to exclude certain matches by specifying some additional criteria for the filter.

The properties element is used to reference a properties file to load to read a users password or pre-prepared digest for the authentication process. This is a very simple store of a username and password that stores both of these within the domain model, this is only really provided for the provision of simple examples. The authorization element is used to define how a users roles can be loaded after the authentication process completes, these roles may then be used for subsequent authorization decisions based on the service being accessed.

At the moment only a properties file approach or a custom plug-in are supported - support for loading roles from LDAP or from a database are planned for a subsequent release. Strictly speaking these are not a part of the security realm definition, however at the moment they are only used by security realms so the definition of outbound connection is described here.

The outbound connections are defined in this section and then referenced by name from the configuration that makes use of them. THROW - Throw an exception is a referral is encountered, this allows an alternative connection to be identified to handle the referral. This element supports the following attributes: For validation of the digests to work on the server we either need to be able to retrieve a users plain text password or we need to be able to obtain a ready prepared hash of their password along with the username and realm.

Previously to allow the addition of custom user stores we have added an option to the realms to call out to a JAAS domain to validate a users username and password, the problem with this approach is that to call JAAS we need the remote user to send in their plain text username and password so that a JAAS LoginModule can perform the validation, this forces us down to use either the HTTP Basic authentication mechanism or the SASL Plain mechanism depending on the transport used which is undesirable as we can not longer use Digest.

To overcome this we now support plugging in custom user stores to support loading a users password, hash and roles from a custom store to allow different stores to be implemented without forcing the authentication back to plain text variant, this article describes the requirements for a plug in and shows a simple example plug-in for use with WildFly When implementing a plug in there are two steps to the authentication process, the first step is to load the users identity and credential from the relevant store - this is then used to verify the user attempting to connect is valid.

After the remote user is validated we then load the users roles in a second step. For this reason the support for plug-ins is split into the two stages, when providing a plug-in either of these two steps can be implemented but there is no requirement to implement the other side.

When implementing a plug-in the following interfaces are the bare minimum that need to be implemented so depending on if a plug-in to load a users identity or a plug-in to load a users roles is being implemented you will be implementing one of these interfaces.

Note - All classes and interfaces of the SPI to be implemented are in the 'org. To implement an AuthenticationPlugIn the following interface needs to be implemened: During the authentication process this method will be called with the user name supplied by the remote user and the name of the realm they are authenticating against, this method call represents that an authentication attempt is occurring but it is the Identity instance that is returned that will be used for the actual authentication to verify the remote user.

Additional information can be contained within the Identity implementation although it will not currently be used, the key piece of information here is the Credential that will be returned - this needs to be one of the following: The PasswordCredential is already implemented so use this class if you have the plain text password of the remote user, by using this the secured interfaces will be able to continue using the Digest mechanism for authentication.

This class is also already implemented and should be returned if instead of the plain text password you already have a pre-prepared hash of the username, realm and password. This is a special Credential type to use when it is not possible to obtain either a plain text representation of the password or a pre-prepared hash - this is an interface as you will need to provide an implementation to verify a supplied password.

The down side of using this type of Credential is that the authentication mechanism used at the transport level will need to drop down from Digest to either HTTP Basic or SASL Plain which will now mean that the remote client is sending their credential across the network in the clear.

If you use this type of credential be sure to force the mechanism choice to Plain as described in the configuration section below.

If you are implementing a custom mechanism to load a users roles you need to implement the AuthorizationPlugIn. As with the AuthenticationPlugIn this has a single method that takes a users userName and realm - the return type is an array of Strings with each entry representing a role the user is a member of. In addition to the specific interfaces above there is an additional interface that a plug-in can implement to receive configuration information before the plug-in is used and also to receive a Map instance that can be used to share state between the plug-in instance used for the authentication step of the call and the plug-in instance used for the authorization step.

The next step of this article describes the steps to implement a plug-in provider and how to make it available within WildFly 14 and how to configure it. Example configuration and an example implementation are shown to illustrate this.

Before looking closely at the packaging and configuration there is one more interface to implement and that is the PlugInProvider interface, that interface is responsible for making PlugIn instances available at runtime to handle the requests.

These methods are called with the name that is supplied in the plug-in elements that are contained within the authentication and authorization elements of the configuration, based on the sample configuration above the loadAuthenticationPlugIn method will be called with a parameter of 'Sample' and the loadAuthorizationPlugIn method will be called with a parameter of 'Delegate'. Multiple plug-in providers may be available to the application server so if a PlugInProvider implementation does not recognise a name then it should just return null and the server will continue searching the other providers.

If a PlugInProvider does recognise a name but fails to instantiate the PlugIn then a RuntimeException can be thrown to indicate the failure. As a server could have many providers registered it is recommended that a naming convention including some form of hierarchy is used e. The load methods are called for each authentication attempt but it will be an implementation detail of the provider if it decides to return a new instance of the provider each time - in this scenario as we also use configuration and shared state then new instances of the implementations make sense.

To make the PlugInProvider available to the application it is bundled as a module and added to the modules already shipped with WildFly The interfaces being implemented are in the ' org.

Looking back at the sample configuration at the top of the realm definition the following element was added: This element is used to list the modules that should be searched for plug-ins.

As you can see from this implementation there is also an additional class being extended AbstractPlugIn - that is simply an abstract class that implements the AuthenticationPlugIn , AuthorizationPlugIn , and PlugInConfigurationSupport interfaces already. The properties that were defined in the configuration are passed in as a Map and importantly for this sample the plug-in adds itself to the shared state map.

This plug-in illustrates how two plug-ins can work together, by the AuthenticationPlugIn placing itself in the shared state map it is possible for the authorization plug-in to make use of it for the loadRoles implementation. Another option to consider to achieve similar behaviour could be to provide an Identity implementation that also contains the roles and place this in the shared state map - the AuthorizationPlugIn can retrieve this and return the roles.

As mentioned earlier in this article if the ValidatePasswordCredential is going to be used then the authentication used at the transport level needs to be forced from Digest authentication to plain text authentication, this can be achieved by adding a mechanism attribute to the plug-in definition within the authentication element i.

This section of the document contains a couple of examples for the most common scenarios likely to be used with the security realms, please feel free to raise Jira issues requesting additional scenarios or if you have configured something not covered here please feel free to add your own examples - this document is editable after all.

The following example demonstrates an example configuration making use of Active Directory to verify the users username and password. The first step is the creation of the key, by default this is going to be used for both the native management interface and the http management interface - to create the key we can use the keyTool , the following example will create a key valid for one year.

WildFly introduces a Role Based Access Control scheme that allows different administrative users to have different sets of permissions to read and update parts of the management tree. This replaces the simple permission scheme used in JBoss AS 7, where anyone who could successfully authenticate to the management security realm would have all permissions.

WildFly ships with two access control "providers", the "simple" provider, and the "rbac" provider. The "simple" provider is the default, and provides a permission scheme equivalent to the JBoss AS 7 behavior where any authenticated administrator has all permissions.

The "rbac" provider gives the finer grained permission scheme that is the focus of this section. The access control policy is centrally configured in a managed domain. As you can see, the provider is set to "simple" by default. With the "simple" provider, the nested "role-mapping" section is not actually relevant. The access control scheme implemented by the "rbac" provider is based on seven standard roles. A role is a named set of permissions to perform one of the actions: The different roles have constraints applied to their permissions that are used to determine whether the permission is granted.

The seven standard roles are divided into two broad categories, based on whether the role can deal with items that are considered to be "security sensitive". Resources, attributes and operations that may affect administrative security e. Operator — Monitor permissions, plus can modify runtime state, but cannot modify anything that ends up in the persistent configuration. Could, for example, restart a server. Deployer — like a Maintainer, but with permission to modify persistent configuration constrained to resources that are considered to be "application resources".

A deployment is an application resource. The messaging server is not. Items like datasources and JMS destinations are not considered to be application resources by default, but this is configurable. Administrator — has all permissions except cannot read or write resources related to the administrative audit logging system. Auditor — can read anything. Can only modify the resources related to the administrative audit logging system.

The Auditor and Administrator roles are meant for organizations that want a separation of responsibilities between those who audit normal administrative actions and those who perform them, with those who perform most actions Administrator role not being able to read or alter the auditing configuration. Whether the resource, attribute or operation is related to the administrative audit logging function.

Whether a resource is considered to be associated with applications, as opposed to being part of a general container configuration. The first three of these factors are non-configurable; the latter three allow some customization. See " Configuring constraints " for details. As mentioned above, permissions are granted to perform one of three actions, addressing a resource, reading it, and modifying. The latter two actions are fairly self-explanatory.

But what is meant by "addressing" a resource?

WildFly Admin Guide

For example, the "read-children-names" operation lets a user determine valid addresses. Trying to read a resource and getting a "Permission denied" error also gives the user a clue that there actually is a resource at the requested address.

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Some resources may include sensitive information as part of their address. For example, security realm resources include the realm name as the last element in the address. That realm name is potentially security sensitive; for example it is part of the data used when creating a hash of a user password. Because some addresses may contain security sensitive data, a user needs permission to even "address" a resource.

If a user attempts to address a resource and does not have permission, they will not receive a "permission denied" type error. Rather, the system will respond as if the resource does not even exist, e. You can do all of the configuration associated with the "rbac" provider even when the provider is set to "simple".

Update the provider attribute to change between the "simple" and "rbac" providers. Any update requires a reload or restart to take effect. In a managed domain, the access control configuration is part of the domain wide configuration, so the resource address is the same as above, but the CLI is connected to the master Domain Controller:. As with a standalone server, a reload or restart is required for the change to take effect.

In this case, all hosts and servers in the domain will need to be reloaded or restarted, starting with the master Domain Controller, so be sure to plan well before making this change. Once the "rbac" access control provider is enabled, only users who are mapped to one of the available roles will have any administrative permissions at all.

So, to make RBAC useful, a mapping between individual users or groups of users and the available roles must be performed.

Navigate to the "Administration" tab and the "Users" subtab. From there individual user mappings can be added, removed, or edited. First, if one does not exist, create the parent resource for all mappings for a role. Here we create the resource for the Administrator role. Now if user jsmith authenticates to any security realm associated with the management interface they are using, he will be mapped to the Administrator role.

To restrict the mapping to a particular security realm, change the realm attribute to the realm name. This might be useful if different realms are associated with different management interfaces, and the goal is to limit a user to a particular interface. A "group" is an arbitrary collection of users that may exist in the end user environment. They can be named whatever the end user organization wants and can contain whatever users the end user organization wants.

Some of the authentication store types supported by WildFly security realms include the ability to access information about what groups a user is a member of and associate this information with the Subject produced when the user is authenticated.

This is currently supported for the following authentication store types:. Groups are convenient when it comes to associating a user with a role, since entire groups can be associated with a role in a single mapping. Navigate to the "Administration" tab and the "Groups" subtab. From there group mappings can be added, removed, or edited. The CLI can also be used to map groups to roles. As with individual user mappings, the mapping can be restricted to users authenticating via a particular security realm:.

This could be used, for example, to ensure that anyone who can authenticate can at least have Monitor privileges. In the web based admin console, navigate to the "Administration" tab, "Roles" subtab, highlight the relevant role, click the "Edit" button and click on the "Include All" checkbox:. It is also possible to explicitly exclude certain users and groups from a role.

Exclusions take precedence over inclusions, including cases where the include-all attribute is set to true for a role. In the admin console, excludes are done in the same screens as includes. In the add dialog, simply change the "Type" pulldown to "Exclude". In the CLI, excludes are identical to includes, except the resource address has exclude instead of include as the key for the last address element:.

It is possible that a given user will be mapped to more than one role. When this occurs, by default the user will be granted the union of the permissions of the two roles. This behavior can be changed on a global basis to instead respond to the user request with an error if this situation is detected:. A managed domain may involve a variety of servers running different configurations and hosting different applications. In such an environment, it is likely that there will be different teams of administrators responsible for different parts of the domain.

Scoped roles are based on the seven standard roles, but with permissions limited to a portion of the domain — either to a set of server groups or to a set of hosts.

The privileges for a server-group scoped role are constrained to resources associated with one or more server groups. Server groups are often associated with a particular application or set of applications; organizations that have separate teams responsible for different applications may find server-group scoped roles useful. A server-group scoped role is equivalent to the default role upon which it is based, but with privileges constrained to target resources in the resource trees rooted in the server group resources.

The server-group scoped role can be configured to include privileges for the following resources trees logically related to the server group:. Resources in the profile, socket binding group, server config and server portions of the tree that are not logically related to a server group associated with the server-group scoped role will not be addressable by a user in that role.

The system will treat that resource as non-existent for that user. In addition to these privileges, users in a server-group scoped role will have non-sensitive read privileges equivalent to the Monitor role for resources other than those listed above.

The easiest way to create a server-group scoped role is to use the admin console. But you can also use the CLI to create a server-group scoped role. Once the role is created, users or groups can be mapped to it the same as with the seven standard roles. The privileges for a host-scoped role are constrained to resources associated with one or more hosts. A user with a host-scoped role cannot modify the domain wide configuration.

Organizations may use host-scoped roles to give administrators relatively broad administrative rights for a host without granting such rights across the managed domain.

A host-scoped role is equivalent to the default role upon which it is based, but with privileges constrained to target resources in the resource trees rooted in the host resources for one or more specified hosts. In addition to these privileges, users in a host-scoped role will have non-sensitive read privileges equivalent to the Monitor role for domain wide resources i.

The easiest way to create a host-scoped role is to use the admin console. But you can also use the CLI to create a host scoped role. Both server-group and host scoped roles can be added, removed or edited via the admin console. Select "Scoped Roles" from the "Administration" tab, "Roles" subtab:.

Then place the names of the relevant hosts or server groups in the "Scope" text are. Different organizations may have different opinions about what is security sensitive, so WildFly provides configuration options to allow users to tailor these constraints. The developers of the WildFly core and of any subsystem may annotate resources, attributes or operations with a "sensitivity classification". Classifications are either provided by the core and may be applicable anywhere in the management model, or they are scoped to a particular subsystem.

For each classification, there will be a setting declaring whether by default the addressing, read and write actions are considered to be sensitive. If an action is sensitive, only users in the roles able to deal with sensitive data Administrator, Auditor, SuperUser will have permissions.

Using the CLI, administrators can see the settings for a classification. For example, there is a core classification called "socket-config" that is applied to elements throughout the model that relate to configuring sockets:. In the socket-config example above, default-requires-write is true, while the others are false. So, by default modifying a setting involving socket configuration is considered sensitive, while addressing those resources or doing reads is not sensitive.

Administrators can also read the management model to see to which resources, attributes and operations a particular sensitivity classification applies:. There will be a separate child for each address to which the classification applies.

The entire-resource attribute will be true if the classification applies to the entire resource. Otherwise, the attributes and operations attributes will include the names of attributes or operations to which the classification applies. Several of the core sensitivity classifications are commonly used across the management model and deserve special mention. An attribute whose value is some sort of credential, e. By default sensitive for both reads and writes. An attribute whose value is the name of a security domain.

An attribute whose value is the name of a security realm. An attribute whose value is the name of a socket binding. By default not sensitive for any action. A resource, attribute or operation that somehow relates to configuring a socket. By default sensitive for writes. By default any attribute or operation parameter whose value includes a security vault expression will be treated as sensitive, even if no sensitivity classification applies or the classification does not treat the action as sensitive.

This setting can be globally changed via the CLI. There is a resource for this configuration:. So, by default both reading and writing attributes whose values include vault expressions requires a user to be in one of the roles with sensitive data permissions.

Be aware though, that vault expressions can be used in any attribute that supports expressions, not just in credential-type attributes. So it is important to be familiar with where and how your organization uses vault expressions before changing these settings. The standard Deployer role has its write permissions limited to resources that are considered to be "application resources"; i.

By default, only deployment resources are considered to be application resources. However, different organizations may have different opinions on what qualifies as an application resource, so for resource types that subsystems authors consider potentially to be application resources, WildFly provides a configuration option to declare them as such.

Such resources will be annotated with an "application classification". Use read-resource or read-children-resources to see what resources have this classification applied:.

This indicates that this classification, intuitively enough, only applies to mail subsystem mail-session resources.

Guide administration pdf 8 wildfly

To make resources with this classification writeable by users in the Deployer role, set the configured-application attribute to true. The subsystems shipped with the full WildFly distribution include the following application classifications:. The RBAC scheme will result in reduced permissions for administrators who do not map to the SuperUser role, so this will of course have some impact on their experience when using administrative tools like the admin console and the CLI.

The admin console takes great pains to provide a good user experience even when the user has reduced permissions. Resources the user is not permitted to see will simply not be shown, or if appropriate will be replaced in the UI with an indication that the user is not authorized. Interaction units like "Add" and "Remove" buttons and "Edit" links will be suppressed if the user has no write permissions.

For example, a user in the Monitor role cannot read passwords:. This prevents unauthorized users fishing for sensitive data in resource addresses by checking for "Permission denied" type failures. Users who use the read-resource operation may ask for data, some of which they are allowed to see and some of which they are not.

If this happens, the request will not fail, but inaccessible data will be elided and a response header will be included advising on what was not included. Here we show the effect of a Monitor trying to recursively read the security subsystem configuration:. The response-headers section includes access control data in a list with one element per relevant resource. The absolute and relative address of the resource is shown, along with the fact that the value of the deep-copy-subject-mode attribute has been filtered i.

The management model descriptive metadata returned from operations like read-resource-description and read-operation-description can be configured to include information describing the access control constraints relevant to the resource, This is done by using the access-control parameter. For example, a user who maps to the Monitor role could ask for information about a resource in the mail subsystem:. Because trim-descriptions was used as the value for the access-control parameter, the typical "description", "attributes", "operations" and "children" data is largely suppressed.

For more on this, see below. The access-constraints field indicates that this resource is annotated with an application constraint. The access-control field includes information about the permissions the current caller has for this resource. The default section shows the default settings for resources of this type.

The read and write fields directly under default show that the caller can, in general, read this resource but cannot write it. The attributes section shows the individual attribute settings. Note that Monitor cannot read the username and password attributes. There are three valid values for the access-control parameter to read-resource-description and read-operation-description:.

This is the default behavior if no parameter is included. Users can learn in which roles they are operating. In the admin console, click on your name in the top right corner; the roles you are in will be shown. CLI users should use the whoami operation with the verbose attribute set:.

If a user maps to the SuperUser role, WildFly also supports letting that user request that they instead map to one or more other roles. This can be useful when doing demos, or when the SuperUser is changing the RBAC configuration and wants to see what effect the changes have from the perspective of a user in another role.

With the CLI, run-as capability is on a per-request basis. It is done by using the "roles" operation header, the value of which can be the name of a single role or a bracket-enclosed, comma-delimited list of role names. This "run-as" capability is available even if the "simple" access control provider is used.

When the "simple" provider is used, any authenticated administrator is treated the same as if they would map to SuperUser when the "rbac" provider is used. However, the "simple" provider actually understands all of the "rbac" provider configuration settings described above, but only makes use of them if the "run-as" capability is used for a request.

Otherwise, the SuperUser role has all permissions, so detailed configuration is irrelevant. Using the run-as capability with the "simple" provider may be useful if an administrator is setting up an rbac provider configuration before switching the provider to rbac to make that configuration take effect. The administrator can then run-as different roles to see the effect of the planned settings. Any server within the server group will then be provided with that deployment.

The domain and host controller components manage the distribution of binaries across network boundaries. Distributing deployment binaries involves two steps: The deployment will be available to the domain controller, assigned to a server group, and deployed on all running servers in that group:. If you only want the deployment deployed on servers in some server groups, but not all, use the --server-groups parameter instead of -all-server-groups:.

If you have a new version of the deployment that you want to deploy replacing an existing one, use the --force parameter:. If you only want to undeploy from some server groups but not others, use the - server-groups parameter instead of -all-relevant-server-groups. The CLI deploy command supports a number of other parameters that can control behavior.

Use the --help parameter to learn more:. Managed and unmanaged deployments can be 'exploded', i. An exploded deployment can be convenient to administer if your administrative processes involve inserting or replacing files from a base version in order to create a version tailored for a particular use for example, copy in a base deployment and then copy in a jboss-web.

Exploded deployments are also nice in some development scenarios, as you can replace static content e. Since unmanaged deployment content is directly in your charge, the following operations only make sense for a managed deployment. The empty content parameter is required to check that you really intend to create an empty deployment and not just forget to define the content.

This will 'explode' an existing archive deployment to its exploded format. This operation is not recursive so you need to explode the sub-deployment if you want to be able to manipulate the sub-deployment content. You can do this by specifying the sub-deployment archive path as a parameter to the explode operation.

Now you can add or remove content to your exploded deployment. Note that per-default this will overwrite existing contents, you can specify the overwrite parameter to make the operation fail if the content already exists. Each content specifies a source content and the target path to which it will be copied relative to the deployment root.

With WildFly 11 you can use input-stream-index which was a convenient way to pass a stream of content from the CLI by pointing it to a local file. You also have a read-content operation but since it returns a binary stream, this is not displayable from the CLI. The management CLI however provides high level commands to display or save binary stream attachments:.

When you deploy content, the domain controller adds two types of entries to the domain. Deployments on a standalone server work in a similar way to those on managed domains. The main difference is that there are no server group associations. The same CLI commands used for managed domains work for standalone servers when deploying and removing an application:. For this to work the deployment-scanner subsystem must be present. The scanner periodically checks the contents of the deployments directory and reacts to changes by updating the server.

The WildFly filesystem deployment scanner operates in one of two different modes, depending on whether it will directly monitor the deployment content in order to decide to deploy or redeploy it. The scanner will directly monitor the deployment content, automatically deploying new content and redeploying content whose timestamp has changed. This is similiar to the behavior of previous AS releases, although there are differences:.

A change in any file in an exploded deployment triggers redeploy. The scanner will place marker files in this directory as an indication of the status of its attempts to deploy or undeploy content. These are detailed below.

The scanner will not attempt to directly monitor the deployment content and decide if or when the end user wishes the content to be deployed. Auto-deploy mode and manual deploy mode can be independently configured for zipped deployment content and exploded deployment content.

This is done via the "auto-deploy" attribute on the deployment-scanner element in the standalone. By default, auto-deploy of zipped content is enabled, and auto-deploy of exploded content is disabled. Manual deploy mode is strongly recommended for exploded content, as exploded content is inherently vulnerable to the scanner trying to auto-deploy partially copied content.

The marker files always have the same name as the deployment content to which they relate, but with an additional file suffix appended. For example, the marker file to indicate the example.

Different marker file suffixes have different meanings. Placed by the user to indicate that the given content shouldbe deployed into the runtime or redeployed if alreadydeployed in the runtime. Disables auto-deploy of the content for as long as the fileis present.

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Most useful for allowing updates to explodedcontent without having the scanner initiate redeploy in themiddle of the update. Can be used with zipped content aswell, although the scanner will detect in-progress changesto zipped content and wait until changes are complete. Placed by the deployment scanner service to indicate that ithas noticed a.

This marker file will be deleted when the deployment processcompletes. Placed by the deployment scanner service to indicate that thegiven content has been deployed into the runtime. If an enduser deletes this file, the content will be undeployed. Placed by the deployment scanner service to indicate that thegiven content failed to deploy into the runtime.

The contentof the file will include some information about the cause ofthe failure. Note that with auto-deploy mode, removing thisfile will make the deployment eligible for deployment again. This marker file will be deletedwhen the undeployment process completes.

Placed by the deployment scanner service to indicate that thegiven content has been undeployed from the runtime. If an enduser deletes this file, it has no impact. Placed by the deployment scanner service to indicate that ithas noticed the need to deploy content but has not yetinstructed the server to deploy it.

This file is created ifthe scanner detects that some auto-deploy content is still inthe process of being copied or if there is some problem thatprevents auto-deployment. The scanner will not instruct theserver to deploy or undeploy any content not just thedirectly affected content as long as this condition holds.

Auto-deploy mode only: Replace currently deployed unzipped content with a new version and deploy it:. Manual mode only: Live replace portions of currently deployed unzipped content without redeploying:. Manual or auto-deploy mode: Redeploy currently deployed content i. Note that the behavior of 'touch' and 'echo' are different but the differences are not relevant to the usages in the examples above.

WildFly supports two mechanisms for dealing with deployment content — managed and unmanaged deployments. With a managed deployment the server takes the deployment content and copies it into an internal content repository and thereafter uses that copy of the content, not the original user-provided content. The server is thereafter responsible for the content it uses. With an unmanaged deployment the user provides the local filesystem path of deployment content, and the server directly uses that content.

However the user is responsible for ensuring that content, e. To help you differentiate managed from unmanaged deployments the deployment model has a runtime boolean attribute 'managed'. They can be manipulated by remote management clients, not requiring access to the server filesystem. The deployment content actually used is stored on the filesystem in the internal content repository, which should help shelter it from unintended changes.

All of the previous examples above illustrate using managed deployments, except for any discussion of deployment scanner handling of exploded deployments. In WildFly 10 and earlier exploded deployments are always unmanaged, this is no longer the case since WildFly A physical host can contain zero, one or more server instances. Host Controller When the domain. The Host Controller is solely concerned with server management; it does not itself handle application server workloads.

The Host Controller is responsible for starting and stopping the individual application server processes that run on its host, and interacts with the Domain Controller to help manage them. The host. Primarily: the listing of the names of the actual WildFly 8 instances that are meant to run off of this installation.

This may either be configuration of how to find and contact a remote Domain Controller, or a configuration telling the Host Controller to itself act as the Domain Controller. For example, named interface definitions declared in domain. Abstract path names in domain. Domain Controller One Host Controller instance is configured to act as the central management point for the entire domain, i.

The primary responsibility of the Domain Controller is to maintain the domain's central management policy, to ensure all Host Controllers are aware of its current contents, and to assist the Host Controllers in ensuring any running application server instances are configured in accordance with this policy. A domain. It does not need to be present in installations that are not meant to run a Domain Controller; i.

The presence of a domain. The domain. A profile configuration includes the detailed configuration of the various subsystems that comprise that profile e. The domain configuration also includes the definition of groups of sockets that those subsystems may open. The domain configuration also includes the definition of "server groups": Server Group A server group is set of server instances that will be managed and configured as one.

In a managed domain each application server instance is a member of a server group. Even if the group only has a single server, the server is still a member of a group. It is the responsibility of the Domain Controller and the Host Controllers to ensure that all servers in a server group have a consistent configuration. They should all be configured with the same profile and they should have the same deployment content deployed. The domain can have multiple server groups.

Different server groups can also run the same profile and have the same deployments; for example to support rolling application upgrade scenarios where a complete service outage is avoided by first upgrading the application on one server group and then upgrading a second server group.

An example server group definition is as follows: A server-group configuration includes the following required attributes: name -- the name of the server group profile -- the name of the profile the servers in the group should run In addition, the following optional elements are available: socket-binding-group -- specifies the name of the default socket binding group to use on servers in the group.

Can be overridden on a per-server basis in host. If not provided in the server-group element, it must be provided for each server in host.

The Host Controller will merge these settings with any provided in host. See JVM settings for further details. Server Each "Server" in the above diagram represents an actual application server instance.

The Host Controller is responsible for launching that process. In a managed domain the end user cannot directly launch a server process from the command line. The Host Controller synthesizes the server's configuration by combining elements from the domain wide configuration from domain. Deciding between running standalone servers or a managed domain Which use cases are appropriate for managed domain and which are appropriate for standalone servers?

A managed domain is all about coordinated multi-server management -- with it WildFly 8 provides a central point through which users can manage multiple servers, with rich capabilities to keep those servers' configurations consistent and the ability to roll out configuration changes including deployments to the servers in a coordinated fashion.

It's important to understand that the choice between a managed domain and standalone servers is all about how your servers are managed, not what capabilities they have to service end user requests. This distinction is particularly important when it comes to high availability clusters.