Ok, since I was getting back a 200 reply I didn't check the logs. I get
the below error for no apprent reason. During try and error I removed
almost all fields in a PUT request, while still getting the below error.
What I noticed also is, that "default_port" is returned as a float but
defined as an int AlertUri.class
com.google.gson.JsonSyntaxException: java.lang.NumberFormatException:
For input string: ".0"
at
com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:232)
at
com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:222)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172)
at com.google.gson.Gson.fromJson(Gson.java:795)
at com.google.gson.Gson.fromJson(Gson.java:859)
at com.google.gson.Gson$2.deserialize(Gson.java:131)
at
org.apache.ambari.server.state.alert.AlertDefinitionFactory$AlertDefinitionSourceAdapter.deserialize(AlertDefinitionFactory.java:350)
at
org.apache.ambari.server.state.alert.AlertDefinitionFactory$AlertDefinitionSourceAdapter.deserialize(AlertDefinitionFactory.java:294)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
at com.google.gson.Gson.fromJson(Gson.java:795)
at com.google.gson.Gson.fromJson(Gson.java:761)
at com.google.gson.Gson.fromJson(Gson.java:710)
at com.google.gson.Gson.fromJson(Gson.java:682)
at
org.apache.ambari.server.state.alert.AlertDefinitionFactory.coerce(AlertDefinitionFactory.java:195)
at
org.apache.ambari.server.state.alert.AlertDefinitionHash.getAlertDefinitions(AlertDefinitionHash.java:240)
at
org.apache.ambari.server.state.alert.AlertDefinitionHash.enqueueAgentCommands(AlertDefinitionHash.java:490)
at
org.apache.ambari.server.state.alert.AlertDefinitionHash.enqueueAgentCommands(AlertDefinitionHash.java:460)
at
org.apache.ambari.server.events.listeners.alerts.AlertHashInvalidationListener.onAmbariEvent(AlertHashInvalidationListener.java:94)
at sun.reflect.GeneratedMethodAccessor225.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at
com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at
com.google.common.eventbus.AsyncEventBus.access$001(AsyncEventBus.java:34)
at
com.google.common.eventbus.AsyncEventBus$1.run(AsyncEventBus.java:100)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NumberFormatException: For input string: ".0"
at
java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:569)
at java.math.BigInteger.<init>(BigInteger.java:461)
at java.math.BigInteger.<init>(BigInteger.java:597)
at
com.google.gson.internal.LazilyParsedNumber.intValue(LazilyParsedNumber.java:41)
at com.google.gson.JsonPrimitive.getAsInt(JsonPrimitive.java:255)
at
com.google.gson.internal.bind.JsonTreeReader.nextInt(JsonTreeReader.java:197)
at
com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:230)
... 30 more
Am 06/04/16 um 16:33 schrieb Jonathan Hurley:
Alerts are automatically distributed to all hosts which match their
service and component. So, if you created your alert definition with
HDFS and NameNode, then Ambari will automatically push this alert
definition to any host that's running NameNode. The host will begin
running the alert automatically. There's really nothing that you need
to do here; the alert framework handles everything for you.
On Apr 6, 2016, at 9:35 AM, Henning Kropp <[email protected]
<mailto:[email protected]>> wrote:
Actually I added a alert definition (via REST), but it does not have
any Service/Host attached, so I was wondering how are hosts
"attached" to an alert defintion?
It's an alert for HDFS, NAMENODE, so the definition on POST contained
the component and service attributes, which would be enough
information to distribute the alert on the corresponding hosts?
Sorry for the confusion. In my search for an answer I came accross
the host-only alerts and thought it was related.
Thanks again for your help.
Regards,
Henning
Am 06/04/16 um 15:26 schrieb Jonathan Hurley:
I think what you're asking about is a concept known as host-level
alerts. These are alerts which are not scoped by any particular
hadoop service. A good example of this is the disk usage alert. It's
bound only to a host and will be distributed and run regardless of
what components are installed on that host.
There are two ways to add a host alert:
1) Edit the alerts.json under /var/lib/ambari-server/resources and
add your new alert to the "AMBARI_AGENT" component.
2) Use the REST APIs to create your new alert. The service should be
"AMBARI" and the component should be "AMBARI_AGENT".
You can use the current agent alert (disk usage) as an example:
https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/alerts.json#L31
On Apr 6, 2016, at 8:56 AM, Henning Kropp <[email protected]>
wrote:
How can an alert be added to a host?
Am 05/04/16 um 18:41 schrieb Henning Kropp:
Worked now. Thanks.
Am 05/04/16 um 18:01 schrieb Jonathan Hurley:
The alerts.json file is only to pickup brand new alerts that are
not currently defined in the system. It's more of a way to
quickly seed Ambari with a default set of alerts. If the alert
has already been created, any updates for that alert made in
alerts.json will not be brought in. You'll need to use the REST
APIs to update existing definitions.
You are correct that the agents run the alerts. The
definitions.json file on each agent shows what alerts it is
trying to run.
On Apr 5, 2016, at 11:46 AM, Henning Kropp
<[email protected]> wrote:
Hi,
I am currently trying to change the alert definitions. I used
the REST api to put a new definition for example for id /30 . I
can see the changes when doing a GET.
Additionaly I replaced the alert.json of the service under
ambari-server and ambari-agent. Still the changes are not
reflected in /var/lib/ambari-agent/cache/alerts/definition.json
and I suspect the alert is not working as expected because of this.
As I undestand the defintions are broadcasted with heartbeats by
the server? And are executed on the host by the agent, where the
service is running? Right?
What am I missing?
Thanks,
Henning
