"Add host" for kvm:

The sequence:
1. add host in UI
2. scp setup_agent.sh to agent host, and execute it. This script receives hostip,zoneid, podid and guid, then runs "cloud-setup-agent" and "cloud-setup-console-proxy". Here, we assume that network/hostname and cloud-agent are already configed and installed.
3. Write a dummy kvm resource into the database, then wait for agent connects to server, by polling the database for every 1 minutes. If it finds the agent is in UP state in database, then return, or wait for at least 10 minutes.

agent/bindir/cloud-setup-agent.in

@@ -37,16 +37,14 @@ backupdir = "@SHAREDSTATEDIR@/@AGENTPATH@/etcbackup"
 
 #=================== the magic happens here ====================
 
-stderr("Welcome to the Cloud Agent setup")
-stderr("")
 
 try:
 # parse cmd line	
-	opts, args = getopt.getopt(sys.argv[1:], "a", ["host=", "zone=", "pod=", "no-kvm"])
+	opts, args = getopt.getopt(sys.argv[1:], "a", ["host=", "zone=", "pod=", "no-kvm", "guid="])
 	host=None
 	zone=None
 	pod=None
-	stderr(str(opts))
+	guid=None
     	autoMode=False
 	do_check_kvm = True	
 	for opt, arg in opts:
@@ -59,11 +57,19 @@ try:
 		elif opt == "--pod":
 			if arg != "":
 				pod = arg
+		elif opt == "--guid":
+			if arg != "":
+				guid = arg
 		elif opt == "--no-kvm":
 			do_check_kvm = False
         	elif opt == "-a":
             		autoMode=True
 		
+	if autoMode:
+		cloud_utils.setLogFile("/var/log/cloud/setupAgent.log")
+	
+	stderr("Welcome to the Cloud Agent setup")
+	stderr("")
 	# pre-flight checks for things that the administrator must fix
 	try:
 		for f,n in cloud_utils.preflight_checks(
@@ -106,7 +112,7 @@ try:
 		stderr(str(e))
 		bail(cloud_utils.E_SETUPFAILED,"Cloud Agent setup failed")
 	
-	setup_agent_config(configfile, host, zone, pod)
+	setup_agent_config(configfile, host, zone, pod, guid)
 	stderr("Enabling and starting the Cloud Agent")
 	stop_service(servicename)
 	enable_service(servicename)

agent/src/com/cloud/agent/resource/DummyResource.java

@@ -32,6 +32,7 @@ import com.cloud.resource.ServerResource;
 
 @Local(value={ServerResource.class})
 public class DummyResource implements ServerResource {
+	private boolean _isRemoteAgent = false;
     String _name;
     Host.Type _type;
     boolean _negative;
@@ -101,4 +102,12 @@ public class DummyResource implements ServerResource {
     public void setAgentControl(IAgentControl agentControl) {
     	_agentControl = agentControl;
     }
+    
+    public boolean IsRemoteAgent() {
+    	return _isRemoteAgent;
+    }
+    
+    public void setRemoteAgent(boolean remote) {
+    	_isRemoteAgent = remote;
+    }
 }

client/tomcatconf/components.xml.in

@@ -149,7 +149,7 @@
 
         <adapters key="com.cloud.resource.Discoverer">
             <adapter name="SecondaryStorage" class="com.cloud.storage.secondary.SecondaryStorageDiscoverer"/>
-            <adapter name="XenServer" class="com.cloud.hypervisor.xen.discoverer.XcpServerDiscoverer"/>
+            <adapter name="KVM Agent" class="com.cloud.hypervisor.kvm.discoverer.KvmServerDiscoverer"/>
         </adapters>
 
         <manager name="Cluster Manager" class="com.cloud.cluster.DummyClusterManagerImpl">

console-proxy/bindir/cloud-setup-console-proxy.in

@@ -14,6 +14,7 @@ for pythonpath in (
 		if os.path.isdir(pythonpath): sys.path.insert(0,pythonpath)
 # ---- End snippet of code ----
 import cloud_utils
+from cloud_utils import stderr
 
 E_GENERIC= 1
 E_NOKVM = 2
@@ -27,13 +28,6 @@ E_CPRECONFIGFAILED = 9
 E_CPFAILEDTOSTART = 10
 E_NOFQDN = 11
 
-
-def stderr(msgfmt,*args):
-	msgfmt += "\n"
-	if args: sys.stderr.write(msgfmt%args)
-	else: sys.stderr.write(msgfmt)
-	sys.stderr.flush()
-
 def bail(errno=E_GENERIC,message=None,*args):
 	if message: stderr(message,*args)
 	stderr("Cloud Console Proxy setup aborted")
@@ -133,10 +127,11 @@ CentOS = os.path.exists("/etc/centos-release") or ( os.path.exists("/etc/redhat-
 
 def main():
 	# parse cmd line	
-	opts, args = getopt.getopt(sys.argv[1:], "", ["host=", "zone=", "pod="])
+	opts, args = getopt.getopt(sys.argv[1:], "a", ["host=", "zone=", "pod="])
 	host=None
 	zone=None
 	pod=None
+    	autoMode=False
 	do_check_kvm = True	
 	for opt, arg in opts:
 		if opt == "--host":
@@ -148,8 +143,13 @@ def main():
 		elif opt == "--pod":
 		        if arg != "":
 				pod = arg
+        	elif opt == "-a":
+            		autoMode=True
 	servicename = "@PACKAGE@-console-proxy"
 	
+	if autoMode:
+		cloud_utils.setLogFile("/var/log/cloud/setupConsoleProxy.log")
+
 	stderr("Welcome to the Cloud Console Proxy setup")
 	stderr("")
 

core/src/com/cloud/hypervisor/kvm/resource/KvmDummyResourceBase.java

@@ -0,0 +1,70 @@
+package com.cloud.hypervisor.kvm.resource;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.naming.ConfigurationException;
+
+import com.cloud.agent.api.Answer;
+import com.cloud.agent.api.Command;
+import com.cloud.agent.api.PingCommand;
+import com.cloud.agent.api.StartupCommand;
+import com.cloud.agent.api.StartupRoutingCommand;
+import com.cloud.host.Host.Type;
+import com.cloud.hypervisor.Hypervisor;
+import com.cloud.hypervisor.xen.resource.CitrixResourceBase;
+import com.cloud.resource.ServerResource;
+import com.cloud.resource.ServerResourceBase;
+import com.cloud.vm.State;
+
+public class KvmDummyResourceBase extends ServerResourceBase implements ServerResource {
+	private String _zoneId;
+	private String _podId;
+	private String _guid;
+	private String _agentIp;
+	@Override
+	public Type getType() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public StartupCommand[] initialize() {
+		StartupRoutingCommand cmd = new StartupRoutingCommand(0, 0, 0, 0, null, Hypervisor.Type.KVM, new HashMap<String, String>(), new HashMap<String, State>());
+		cmd.setDataCenter(_zoneId);
+		cmd.setPod(_podId);
+		cmd.setGuid(_guid);
+		cmd.setName(_agentIp);
+		cmd.setPrivateIpAddress(_agentIp);
+		cmd.setStorageIpAddress(_agentIp);
+		cmd.setVersion(KvmDummyResourceBase.class.getPackage().getImplementationVersion());
+		return new StartupCommand[] { cmd };
+	}
+
+	@Override
+	public PingCommand getCurrentStatus(long id) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public Answer executeRequest(Command cmd) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	protected String getDefaultScriptsDir() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+	
+	@Override
+	public boolean configure(final String name, final Map<String, Object> params) throws ConfigurationException {
+		_zoneId = (String)params.get("zone");
+		_podId = (String)params.get("pod");
+		_guid = (String)params.get("guid");
+		_agentIp = (String)params.get("agentIp");
+		return true;
+	}
+}

core/src/com/cloud/hypervisor/vmware/resource/VmwareResource.java

@@ -23,7 +23,7 @@ import com.cloud.resource.ServerResource;
 import com.cloud.storage.resource.StoragePoolResource;
 
 public class VmwareResource implements StoragePoolResource, ServerResource {
-
+	private boolean _isRemoteAgent = false;
 	@Override
 	public DownloadAnswer execute(PrimaryStorageDownloadCommand cmd) {
 		// TODO Auto-generated method stub
@@ -119,4 +119,12 @@ public class VmwareResource implements StoragePoolResource, ServerResource {
 		// TODO Auto-generated method stub
 		return false;
 	}
+	
+	public boolean IsRemoteAgent() {
+    	return _isRemoteAgent;
+    }
+    
+    public void setRemoteAgent(boolean remote) {
+    	_isRemoteAgent = remote;
+    }
 }

core/src/com/cloud/hypervisor/xen/resource/CitrixResourceBase.java

@@ -223,6 +223,7 @@ public abstract class CitrixResourceBase implements StoragePoolResource, ServerR
     protected String _guestNetworkName;
     protected int _wait;
     protected IAgentControl _agentControl;
+    protected boolean _isRemoteAgent = false;
 
     protected final XenServerHost _host = new XenServerHost();
 
@@ -6072,6 +6073,13 @@ public abstract class CitrixResourceBase implements StoragePoolResource, ServerR
         _agentControl = agentControl;
     }
 
+    public boolean IsRemoteAgent() {
+    	return _isRemoteAgent;
+    }
+    
+    public void setRemoteAgent(boolean remote) {
+    	_isRemoteAgent = remote;
+    }
 
     
     protected Answer execute(PoolEjectCommand cmd) {

core/src/com/cloud/resource/ServerResource.java

@@ -71,4 +71,8 @@ public interface ServerResource extends Manager {
     public IAgentControl getAgentControl();
     
     public void setAgentControl(IAgentControl agentControl);
+    
+    public boolean IsRemoteAgent();
+    
+    public void setRemoteAgent(boolean remote);
 }

core/src/com/cloud/resource/ServerResourceBase.java

@@ -48,6 +48,7 @@ public abstract class ServerResourceBase implements ServerResource {
     protected NetworkInterface _storageNic;
     protected NetworkInterface _storageNic2;
     protected IAgentControl _agentControl;
+    protected boolean _isRemoteAgent = false;
 
     @Override
     public String getName() {
@@ -301,4 +302,12 @@ public abstract class ServerResourceBase implements ServerResource {
     public boolean stop() {
         return true;
     }
+    
+    public boolean IsRemoteAgent() {
+    	return _isRemoteAgent;
+    }
+    
+    public void setRemoteAgent(boolean remote) {
+    	_isRemoteAgent = remote;
+    }
 }

python/lib/cloud_utils.py

@@ -45,9 +45,11 @@ elif os.path.exists("/etc/redhat-release") and not os.path.exists("/etc/fedora-r
 elif os.path.exists("/etc/legal") and "Ubuntu" in file("/etc/legal").read(-1): distro = Ubuntu
 else: distro = Unknown
 
-
+logFileName=None
 # ==================  LIBRARY UTILITY CODE=============
-
+def setLogFile(logFile):
+	global logFileName
+	logFileName=logFile
 def read_properties(propfile):
 	if not hasattr(propfile,"read"): propfile = file(propfile)
 	properties = propfile.read().splitlines()
@@ -63,9 +65,10 @@ def read_properties(propfile):
 def stderr(msgfmt,*args):
 	"""Print a message to stderr, optionally interpolating the arguments into it"""
 	msgfmt += "\n"
+	if logFileName != None:
+		sys.stderr = open(logFileName, 'a+')
 	if args: sys.stderr.write(msgfmt%args)
 	else: sys.stderr.write(msgfmt)
-	sys.stderr.flush()
 
 def exit(errno=E_GENERIC,message=None,*args):
 	"""Exit with an error status code, printing a message to stderr if specified"""
@@ -907,7 +910,7 @@ def prompt_for_hostpods(zonespods):
 	
 # this configures the agent
 
-def setup_agent_config(configfile, host, zone, pod):
+def setup_agent_config(configfile, host, zone, pod, guid):
 	stderr("Examining Agent configuration")
 	fn = configfile
 	text = file(fn).read(-1)
@@ -915,9 +918,12 @@ def setup_agent_config(configfile, host, zone, pod):
 	confopts = dict([ m.split("=",1) for m in lines if "=" in m and not m.startswith("#") ])
 	confposes = dict([ (m.split("=",1)[0],n) for n,m in enumerate(lines) if "=" in m and not m.startswith("#") ])
 	
-	if not "guid" in confopts:
+	if guid != None:
-		stderr("Generating GUID for this Agent")
+		confopts['guid'] = guid
-		confopts['guid'] = uuidgen().stdout.strip()
+	else:
+		if not "guid" in confopts:
+			stderr("Generating GUID for this Agent")
+			confopts['guid'] = uuidgen().stdout.strip()
 	
 	if host == None:
 		try: host = confopts["host"]

scripts/vm/hypervisor/kvm/setup_agent.sh

@@ -1,6 +1,6 @@
 #! /bin/bash
 # Did cloud-agent installed
-set -x
+#set -x
 install_cloud_agent() {
     local dev=$1
     local retry=10
@@ -126,6 +126,7 @@ cloud_agent_setup() {
     local host=$1
     local zone=$2
     local pod=$3
+    local guid=$4
     # disable selinux
     selenabled=`cat /selinux/enforce`
     if [ "$selenabled" == "1" ]
@@ -133,21 +134,22 @@ cloud_agent_setup() {
         sed -i  's/\(SELINUX\)\(.*\)/\1=permissive/' /etc/selinux/config
         setenforce 0
     fi
-    cloud-setup-agent --host=$host --zone=$zone --pod=$pod -a
+    cloud-setup-agent --host=$host --zone=$zone --pod=$pod --guid=$guid -a > /dev/null
 }
 
 cloud_consoleP_setup() {
     local host=$1
     local zone=$2
     local pod=$3
-    cloud-setup-console-proxy --host=$host --zone=$zone --pod=$pod 
+    cloud-setup-console-proxy --host=$host --zone=$zone --pod=$pod -a > /dev/null
 }
 
 host=
 zone=
 pod=
+guid=
 dflag=
-while getopts 'h:z:p:d' OPTION
+while getopts 'h:z:p:u:d' OPTION
 do
   case $OPTION in
   h) 
@@ -159,6 +161,9 @@ do
   p)    
         pod="$OPTARG"
         ;;
+  u)    
+        guid="$OPTARG"
+        ;;
   d)    
         dflag=1
         ;;
@@ -166,7 +171,7 @@ do
   esac
 done
 
-install_cloud_agent $dflag
+#install_cloud_agent $dflag
-install_cloud_consoleP $dflag
+#install_cloud_consoleP $dflag
-cloud_agent_setup $host $zone $pod
+cloud_agent_setup $host $zone $pod $guid
 cloud_consoleP_setup $host $zone $pod

server/.classpath

@@ -20,5 +20,6 @@
 	<classpathentry kind="lib" path="/thirdparty/commons-codec-1.4.jar"/>
 	<classpathentry kind="lib" path="/thirdparty/servlet-api.jar"/>
 	<classpathentry combineaccessrules="false" kind="src" path="/api"/>
+	<classpathentry kind="lib" path="/thirdparty/trilead-ssh2-build213.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

server/src/com/cloud/agent/manager/AgentManagerImpl.java

@@ -100,6 +100,7 @@ import com.cloud.host.Status.Event;
 import com.cloud.host.dao.DetailsDao;
 import com.cloud.host.dao.HostDao;
 import com.cloud.hypervisor.Hypervisor;
+import com.cloud.hypervisor.kvm.resource.KvmDummyResourceBase;
 import com.cloud.maid.StackMaid;
 import com.cloud.maint.UpgradeManager;
 import com.cloud.network.IPAddressVO;
@@ -464,7 +465,8 @@ public class AgentManagerImpl implements AgentManager, HandlerFactory {
         long id = server.getId();
 
         AgentAttache attache = createAttache(id, server, resource);
-        notifyMonitorsOfConnection(attache, startup);
+        if (!resource.IsRemoteAgent())
+        	notifyMonitorsOfConnection(attache, startup);
         return attache;
     }
 
@@ -1550,7 +1552,7 @@ public class AgentManagerImpl implements AgentManager, HandlerFactory {
 
     protected AgentAttache createAttache(long id, HostVO server, ServerResource resource) {
         s_logger.debug("Adding directly connect host for " + id);
-        if (resource instanceof DummySecondaryStorageResource) {
+        if (resource instanceof DummySecondaryStorageResource || resource instanceof KvmDummyResourceBase) {
         	return new DummyAttache(id, false);
         }
         final DirectAgentAttache attache = new DirectAgentAttache(id, resource, server.getStatus() == Status.Maintenance

server/src/com/cloud/hypervisor/kvm/discoverer/KvmServerDiscoverer.java

@@ -1,8 +1,16 @@
 package com.cloud.hypervisor.kvm.discoverer;
 
+import java.net.InetAddress;
 import java.net.URI;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.UUID;
+
+import javax.ejb.Local;
+import javax.naming.ConfigurationException;
+
+import org.apache.log4j.Logger;
 
 import com.cloud.agent.Listener;
 import com.cloud.agent.api.AgentControlAnswer;
@@ -10,15 +18,31 @@ import com.cloud.agent.api.AgentControlCommand;
 import com.cloud.agent.api.Answer;
 import com.cloud.agent.api.Command;
 import com.cloud.agent.api.StartupCommand;
+import com.cloud.configuration.dao.ConfigurationDao;
 import com.cloud.exception.DiscoveryException;
 import com.cloud.host.HostVO;
 import com.cloud.host.Status;
+import com.cloud.host.dao.HostDao;
+import com.cloud.hypervisor.kvm.resource.KvmDummyResourceBase;
+import com.cloud.hypervisor.xen.resource.CitrixResourceBase;
 import com.cloud.resource.Discoverer;
 import com.cloud.resource.DiscovererBase;
 import com.cloud.resource.ServerResource;
+import com.cloud.utils.component.ComponentLocator;
+import com.cloud.utils.component.Inject;
+import com.cloud.utils.script.Script;
+import com.trilead.ssh2.SCPClient;
+import com.trilead.ssh2.Session;
 
+@Local(value=Discoverer.class)
 public class KvmServerDiscoverer extends DiscovererBase implements Discoverer,
 		Listener {
+	 private static final Logger s_logger = Logger.getLogger(KvmServerDiscoverer.class);
+	 private String _setupAgentPath;
+	 private ConfigurationDao _configDao;
+	 private String _hostIp;
+	 private int _waitTime = 10;
+	 @Inject HostDao _hostDao = null;
 	 
 	@Override
 	public boolean processAnswer(long agentId, long seq, Answer[] answers) {
@@ -73,14 +97,101 @@ public class KvmServerDiscoverer extends DiscovererBase implements Discoverer,
 	public Map<? extends ServerResource, Map<String, String>> find(long dcId,
 			Long podId, Long clusterId, URI uri, String username,
 			String password) throws DiscoveryException {
-		// TODO Auto-generated method stub
+		 Map<KvmDummyResourceBase, Map<String, String>> resources = new HashMap<KvmDummyResourceBase, Map<String, String>>();
+		 Map<String, String> details = new HashMap<String, String>();
+		if (!uri.getScheme().equals("http")) {
+            String msg = "urlString is not http so we're not taking care of the discovery for this: " + uri;
+            s_logger.debug(msg);
+            return null;
+		}
+		com.trilead.ssh2.Connection sshConnection = null;
+		Session sshSession = null;
+		String agentIp = null;
+		try {
+			
+			String hostname = uri.getHost();
+			InetAddress ia = InetAddress.getByName(hostname);
+			agentIp = ia.getHostAddress();
+			String guid = UUID.nameUUIDFromBytes(agentIp.getBytes()).toString();
+			sshConnection = new com.trilead.ssh2.Connection(agentIp, 22);
+
+			sshConnection.connect(null, 60000, 60000);
+			if (!sshConnection.authenticateWithPassword(username, password)) {
+				throw new Exception("Unable to authenticate");
+			}
+			SCPClient scp = new SCPClient(sshConnection);
+			scp.put(_setupAgentPath, "/usr/bin", "0755");
+			sshSession = sshConnection.openSession();
+			/*running setup script in background, because we will restart agent network, that may cause connection lost*/
+			s_logger.debug("/usr/bin/setup_agent.sh " + " -h " + _hostIp + " -z " + dcId + " -p " + podId + " -u " + guid);
+			sshSession.execCommand("/usr/bin/setup_agent.sh " + " -h " + _hostIp + " -z " + dcId + " -p " + podId + " -u " + guid + " 1>&2" );
+			
+			KvmDummyResourceBase kvmResource = new KvmDummyResourceBase();
+			Map<String, Object> params = new HashMap<String, Object>();
+			
+			params.put("zone", Long.toString(dcId));
+			params.put("pod", Long.toString(podId));
+			params.put("guid", guid);
+			params.put("agentIp", agentIp);
+			kvmResource.configure("kvm agent", params);
+			kvmResource.setRemoteAgent(true);
+			resources.put(kvmResource, details);
+			return resources;
+		} catch (Exception e) {
+			String msg = " can't setup agent, due to " + e.toString() + " - " + e.getMessage();
+			s_logger.warn(msg);
+		} finally {
+			if (sshSession != null) 
+				sshSession.close();
+			
+			if (sshConnection != null)
+				sshConnection.close();
+		}
+		
 		return null;
 	}
 
 	@Override
-	public void postDiscovery(List<HostVO> hosts, long msId) {
+	public void postDiscovery(List<HostVO> hosts, long msId) throws DiscoveryException {
-		// TODO Auto-generated method stub
+		/*Wait for agent coming back*/
+		if (hosts.isEmpty()) {
+			return;
+		}
+		HostVO host = hosts.get(0);
+		for (int i = 0 ; i < _waitTime; i++) {
 			
+			if (host.getStatus() != Status.Up) {
+				try {
+					Thread.sleep(60000);
+				} catch (InterruptedException e) {
+					s_logger.debug("Failed to sleep: " + e.toString());
+				}
+			} else {
+				return;
+			}
+		}
+
+		/*Timeout, throw warning msg to user*/
+		throw new DiscoveryException("Agent " + host.getId() + ":" + host.getPublicIpAddress() + " does not come back, It may connect to server later, if not, please check the agent log");
 	}
 	
+	@Override
+    public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
+		ComponentLocator locator = ComponentLocator.getCurrentLocator();
+        _configDao = locator.getDao(ConfigurationDao.class);
+		_setupAgentPath = Script.findScript(getPatchPath(), "setup_agent.sh");
+		
+		if (_setupAgentPath == null) {
+			throw new ConfigurationException("Can't find setup_agent.sh");
+		}
+		_hostIp = _configDao.getValue("host");
+		if (_hostIp == null) {
+			throw new ConfigurationException("Can't get host IP");
+		}
+		return true;
+	}
+	
+	protected String getPatchPath() {
+        return "scripts/vm/hypervisor/kvm/";
+    }
 }

server/src/com/cloud/hypervisor/xen/discoverer/XcpServerDiscoverer.java

@@ -450,7 +450,7 @@ public class XcpServerDiscoverer extends DiscovererBase implements Discoverer, L
     }
 
     @Override
-    public void postDiscovery(List<HostVO> hosts, long msId) {
+    public void postDiscovery(List<HostVO> hosts, long msId)  throws DiscoveryException{
         //do nothing
     }
 

server/src/com/cloud/resource/Discoverer.java

@@ -40,5 +40,5 @@ public interface Discoverer extends Adapter {
      */
     Map<? extends ServerResource, Map<String, String>> find(long dcId, Long podId, Long clusterId, URI uri, String username, String password) throws DiscoveryException;
 
-	void postDiscovery(List<HostVO> hosts, long msId);
+	void postDiscovery(List<HostVO> hosts, long msId)  throws DiscoveryException;
 }