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jsensharma · ‎12-11-2019

@Amrutha Which knox version is it? We see the error as following: Caused by: java.lang.NoSuchFieldError: DEFAULT_XML_TYPE_ATTRIBUTE . At a glance it looks very similar to the one issue reported with Knox https://issues.apache.org/jira/browse/KNOX-1987

jsensharma · ‎12-11-2019

@vendevu Unfortunately the classes present inside the "org.apache.ambari.server.state.alert" package does not contain DEBUG messages hence you can not see those debugs. But you can get the Alert Notification related DEBUGs. As you have referred to other Community threads where you see the "Notification" related DEBUG messages like following: DEBUG [alert-dispatch-5] EmailDispatcher:142 - Successfully dispatched email to [@.com], so it seems like Ambari is sending email but it is struck somewhere. So if you want to see "Alert Notification" (like Email Notification/ SMTP notification) related DEBUGs inside your "ambari-server.log" then please try this: Can you please try this: 1). Edit the "/etc/ambari-server/conf/log4j.properties" file and then Add the following line somewhere at the end of this file. log4j.logger.org.apache.ambari.server.notifications=DEBUG 2). Restart Amabri Server # ambari-server restart 3). Tail the ambari-server.log file. # tail -f /var/log/ambari-server/ambari-server.log 4). As soon as some new alert notification (Like SMTP Alert Notification OR SNMP Alert Notification) will be triggered we should see some logging in the above log file. . .

jsensharma · ‎12-11-2019

@pauljoshiva I was reading the following doc: https://docs.cloudera.com/documentation/enterprise/6/release-notes/topics/rg_cm_631_known_issues.html Which says "Many Cloudera Manager wizards, including Installation wizards and Add Service/Role wizards, cannot be completed when using Microsoft Internet Explorer version 11.x. To work around the issue, use another supported browser. Can you try with a slightly different browser to see if it works.

jsensharma · ‎12-08-2019

@mike_bronson7 1. You can get the List of KAFKA Broker Hosts (hostnames) using the following API call. # curl -iv -u admin:admin -H "X-Requested-By: ambari" -X GET http://$AMBARI_HOST:8080/api/v1/clusters/TestCluster/services/KAFKA/components/KAFKA_BROKER?fields=host_components/HostRoles/host_name 2. Once you know/decide the Hostname (For example: 'kafkabroker5.example.com') in which you want to stop/start the Kafka Broker then you can try the following: . A. To Stop Kafka Broker on Host 'kafkabroker5.example.com' # curl -iv -u admin:admin -H "X-Requested-By: ambari" -X PUT -d '{"RequestInfo":{"context":"Stop Kafka Broker","operation_level":{"level":"HOST_COMPONENT","cluster_name":"TestCluster","host_name":"kafkabroker5.example.com","service_name":"KAFKA"}},"Body":{"HostRoles":{"state":"INSTALLED"}}}' http://$AMBARI_HOST:8080/api/v1/clusters/TestCluster/hosts/kafkabroker5.example.com/host_components/KAFKA_BROKER . B. To Start Kafka Broker on Host 'kafkabroker5.example.com' # curl -iv -u admin:admin -H "X-Requested-By: ambari" -X PUT -d '{"RequestInfo":{"context":"Start Kafka Broker","operation_level":{"level":"HOST_COMPONENT","cluster_name":"TestCluster","host_name":"kafkabroker5.example.com","service_name":"KAFKA"}},"Body":{"HostRoles":{"state":"STARTED"}}}' http://$AMBARI_HOST:8080/api/v1/clusters/TestCluster/hosts/kafkabroker5.example.com/host_components/KAFKA_BROKER .

jsensharma · ‎12-03-2019

@mike_bronson7 Yes, you are right if the alert state is "OK" means the service is running well usually. If it is WARNING/CRITICAL then we need to look at the alert text and alert host to find out why and in which host the alert is in that state. Basically the Kafka "host" where the alert was triggered, The "state" of the alert like CRITICAL,OK,WARNING and then Alert "text" are usually the important parts of an alert which gives us a good idea on what is happening. So you can capture those selected output using: # curl -u admin:admin -H "X-Requested-By: ambari" -X GET "http://$AMBARI_HOST:8080/api/v1/clusters/NewCluster/alerts?fields=Alert/host_name,Alert/host_name,Alert/state,Alert/text&Alert/service_name=KAFKA" . Example Output: # curl -u admin:admin -H "X-Requested-By: ambari" -X GET "<a href="http://newhwx1.example.com:8080/api/v1/clusters/$CLUSTER_NAME/alerts?fields=Alert/host_name,Alert/host_name,Alert/state,Alert/text&Alert/service_name=KAFKA" target="_blank">http://newhwx1.example.com:8080/api/v1/clusters/$CLUSTER_NAME/alerts?fields=Alert/host_name,Alert/host_name,Alert/state,Alert/text&Alert/service_name=KAFKA</a>" { "href" : "<a href="http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts?fields=Alert/host_name,Alert/host_name,Alert/state,Alert/text&Alert/service_name=KAFKA" target="_blank">http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts?fields=Alert/host_name,Alert/host_name,Alert/state,Alert/text&Alert/service_name=KAFKA</a>", "items" : [ { "href" : "<a href="http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts/704" target="_blank">http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts/704</a>", "Alert" : { "cluster_name" : "NewCluster", "definition_id" : 401, "definition_name" : "kafka_broker_process", "host_name" : "newhwx3.example.com", "id" : 704, "service_name" : "KAFKA", "state" : "OK", "text" : "TCP OK - 0.000s response on port 6667" } }, { "href" : "<a href="http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts/1201" target="_blank">http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts/1201</a>", "Alert" : { "cluster_name" : "NewCluster", "definition_id" : 401, "definition_name" : "kafka_broker_process", "host_name" : "newhwx5.example.com", "id" : 1201, "service_name" : "KAFKA", "state" : "CRITICAL", "text" : "Connection failed: [Errno 111] Connection refused to newhwx5.example.com:6667" } } ] } .

jsensharma · ‎12-03-2019

@mike_bronson7 You can try something like this: # curl -u admin:admin -H "X-Requested-By: ambari" -X GET "http://$AMBARI_HOST:8080/api/v1/clusters/$CLUSTER_NAME/alerts?fields=*&Alert/service_name=KAFKA" . Example Output: # curl -u admin:admin -H "X-Requested-By: ambari" -X GET "<a href="http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts?fields=*&Alert/service_name=KAFKA" target="_blank">http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts?fields=*&Alert/service_name=KAFKA</a>" { "href" : "<a href="http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts?fields=*&Alert/service_name=KAFKA" target="_blank">http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts?fields=*&Alert/service_name=KAFKA</a>", "items" : [ { "href" : "<a href="http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts/704" target="_blank">http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts/704</a>", "Alert" : { "cluster_name" : "NewCluster", "component_name" : "KAFKA_BROKER", "definition_id" : 401, "definition_name" : "kafka_broker_process", "firmness" : "HARD", "host_name" : "newhwx3.example.com", "id" : 704, "instance" : null, "label" : "Kafka Broker Process", "latest_timestamp" : 1575403190535, "maintenance_state" : "OFF", "occurrences" : 14, "original_timestamp" : 1575402410385, "repeat_tolerance" : 1, "repeat_tolerance_remaining" : 0, "scope" : "HOST", "service_name" : "KAFKA", "state" : "OK", "text" : "TCP OK - 0.000s response on port 6667" } }, { "href" : "<a href="http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts/1201" target="_blank">http://newhwx1.example.com:8080/api/v1/clusters/NewCluster/alerts/1201</a>", "Alert" : { "cluster_name" : "NewCluster", "component_name" : "KAFKA_BROKER", "definition_id" : 401, "definition_name" : "kafka_broker_process", "firmness" : "HARD", "host_name" : "newhwx5.example.com", "id" : 1201, "instance" : null, "label" : "Kafka Broker Process", "latest_timestamp" : 1575403167289, "maintenance_state" : "OFF", "occurrences" : 12, "original_timestamp" : 1575402507311, "repeat_tolerance" : 1, "repeat_tolerance_remaining" : 0, "scope" : "HOST", "service_name" : "KAFKA", "state" : "CRITICAL", "text" : "Connection failed: [Errno 111] Connection refused to newhwx5.example.com:6667" } } ] } .

jsensharma · ‎11-21-2019

@jhoward 1. How was the "/etc/ambari-server/conf/ambari.properties" file got deleted? 2. Do you have a backup of this file "amabri.properties" to use? 3. Ambari stores all the cluster informations inside it's Database. So if your Database is not dropped (lost), you can try using a dummy "ambari.properties" of same version from any of your other working cluster by just changing the JDBC settings to point to your correct ambari DB host/port and with DB credentials. The DB settings for ambari can be found from following command (in any of working ambari cluster) and then you can try to place those properties with correct Database values in your problematic ambari # grep 'jdbc' /etc/ambari-server/conf/ambari.properties .

jsensharma · ‎11-21-2019

@vciampa Similarly you can also find the Ambari repos as well in the docs "Ambari Repositories" section: Example: https://docs.cloudera.com/HDPDocuments/Ambari-2.7.4.0/bk_ambari-installation-ppc/content/ambari_repositories.html

jsensharma · ‎11-21-2019

@vciampa Usually repositories can be found in the repositories section of the doc. For example if oyu want to access HDP 2.6 repom then please check: "HDP 2.6 Repositories" section https://docs.cloudera.com/HDPDocuments/Ambari-2.6.2.2/bk_ambari-installation/content/hdp_stack_repositories.html HDP 2.6 Repositories HDP 2.5 Repositories HDP 2.4 Repositories . Similarly if you want to see the HDP 3.x repo then check: https://docs.cloudera.com/HDPDocuments/Ambari-2.7.4.0/bk_ambari-installation-ppc/content/hdp_stack_repositories.html https://docs.cloudera.com/HDPDocuments/Ambari-2.7.3.0/bk_ambari-installation-ppc/content/hdp_30_repositories.html . If you still see any issue then please let us know where exactly are you looking out for the repo and while accessing the repo do you get any error?

jsensharma · ‎11-20-2019

@KaviTiwari Correct when we manually want to run such scripts which are dependent on ambari agent python modules then Yes, we will have to manually export PYTHONPATH. Ambari agent automatically sets the necessary module paths in the python path when it tries to executed such scripts.

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