I used such request to add two server-groups and four servers

{
"operation" => "composite",
"address" => [],
"steps" => [

{ "operation" => "add", "socket-binding-port-offset" => 0, "status" => "STOPPED", "auto-start" => false, "group" => "primary-server-group", "socket-binding-group" => "standard-sockets", "address" => [ ("host" => "node02"), ("server-config" => "system2-server1") ] }

,

{ "operation" => "stop", "name" => "server", "value" => "system2-server1", "address" => [ ("host" => "node02"), ("server-config" => "system2-server1") ] }

,

{ "operation" => "add", "socket-binding-port-offset" => 150, "status" => "STOPPED", "auto-start" => false, "group" => "secondary-server-group", "socket-binding-group" => "standard-sockets", "address" => [ ("host" => "node02"), ("server-config" => "system2-server2") ] }

,

{ "operation" => "stop", "name" => "server", "value" => "system2-server2", "address" => [ ("host" => "node02"), ("server-config" => "system2-server2") ] }

,

{ "operation" => "add", "socket-binding-port-offset" => 0, "status" => "STOPPED", "auto-start" => false, "group" => "primary-server-group", "socket-binding-group" => "standard-sockets", "address" => [ ("host" => "node01"), ("server-config" => "system1-server1") ] }

,

{ "operation" => "stop", "name" => "server", "value" => "system1-server1", "address" => [ ("host" => "node01"), ("server-config" => "system1-server1") ] }

,

{ "operation" => "add", "socket-binding-port-offset" => 150, "status" => "STOPPED", "auto-start" => false, "group" => "secondary-server-group", "socket-binding-group" => "standard-sockets", "address" => [ ("host" => "node01"), ("server-config" => "system1-server2") ] }

,

{ "operation" => "stop", "name" => "server", "value" => "system1-server2", "address" => [ ("host" => "node01"), ("server-config" => "system1-server2") ] }

,

{ "operation" => "add", "socket-binding-group" => "standard-sockets", "profile" => "default", "address" => [("server-group" => "primary-server-group")] },
{ "operation" => "add", "socket-binding-group" => "standard-sockets", "profile" => "default", "address" => [("server-group" => "secondary-server-group")] }
]
}

And I received such result:

{
"outcome" => "success",
"result" => {
"step-1" => {"outcome" => "success"},
"step-2" => { "outcome" => "success", "result" => "STOPPED" },
"step-3" => {"outcome" => "success"},
"step-4" => { "outcome" => "success", "result" => "STOPPED" },
"step-5" => {"outcome" => "success"},
"step-6" => { "outcome" => "success", "result" => "STOPPED" },
"step-7" => {"outcome" => "success"},
"step-8" => { "outcome" => "success", "result" => "STOPPED" },
"step-9" => undefined,
"step-10" => undefined
},
"server-groups" => undefined
}


But, when I checked admin console, there were no server-groups.
The same with domain.xml on DC side.

So server-groups wasn't addedd.
But if I try to add server-groups one more time:

{
"operation" => "composite",
"address" => [],
"steps" => [
{ "operation" => "add", "socket-binding-group" => "standard-sockets", "profile" => "default", "address" => [("server-group" => "primary-server-group")] }

,

{ "operation" => "add", "socket-binding-group" => "standard-sockets", "profile" => "default", "address" => [("server-group" => "secondary-server-group")] }

]
}

I will get such result:

{
"outcome" => "failed",
"result" => {
"step-1" =>

{ "outcome" => "failed", "rolled-back" => true },
"step-2" => { "outcome" => "failed", "rolled-back" => true }

},
"failure-description" => {"host-failure-descriptions" => {
"node02" => {"JBAS014653: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-1" => "JBAS014803: Duplicate resource [(\"server-group\" => \"primary-server-group\")]"}},
"node01" => {"JBAS014653: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-1" => "JBAS014803: Duplicate resource [(\"server-group\" => \"primary-server-group\")]"}}
}},
"rolled-back" => true
}

Then I need to restart DC to restore server. And after that, I can successuflly add server-groups.

So, after first request, JBoss AS stuck on some uncommited state.