change host names

Author: yanancai

articles/hdinsight/domain-joined/apache-domain-joined-run-kafka.md

@@ -129,7 +129,7 @@ Based on the Ranger policies configured, **sales_user** can produce/consume topi
    export KAFKABROKERS=<brokerlist>:9092
    ```
 
-   Example: `export KAFKABROKERS=wn0-khdicl.contoso.com:9092,wn1-khdicl.contoso.com:9092`
+   Example: `export KAFKABROKERS=<brokername1>.contoso.com:9092,<brokername2>.contoso.com:9092`
 
 3. Follow Step 3 under **Build and deploy the example** in [Tutorial: Use the Apache Kafka Producer and Consumer APIs](../kafka/apache-kafka-producer-consumer-api.md#build-and-deploy-the-example) to ensure that the `kafka-producer-consumer.jar` is also available to **sales_user**.
 

articles/hdinsight/hbase/apache-hbase-backup-replication.md

@@ -106,13 +106,13 @@ The destination address is composed of the following three parts:
 
 `<destinationAddress> = <ZooKeeperQuorum>:<Port>:<ZnodeParent>`
 
-* `<ZooKeeperQuorum>` is a comma-separated list of Apache ZooKeeper nodes, for example:
+* `<ZooKeeperQuorum>` is a comma-separated list of Apache ZooKeeper nodes FQDN names, for example:
 
-    zk0-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,zk4-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,zk3-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net
+    <zookeepername1>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,<zookeepername2>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,<zookeepername3>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net
 
 * `<Port>` on HDInsight defaults to 2181, and `<ZnodeParent>` is `/hbase-unsecure`, so the complete `<destinationAddress>` would be:
 
-    zk0-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,zk4-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,zk3-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net:2181:/hbase-unsecure
+    <zookeepername1>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,<zookeepername1>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,<zookeepername1>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net:2181:/hbase-unsecure
 
 See [Manually Collecting the Apache ZooKeeper Quorum List](#manually-collect-the-apache-zookeeper-quorum-list) in this article for details on how to retrieve these values for your HDInsight cluster.
 
@@ -140,7 +140,7 @@ curl -u admin:<password> -X GET -H "X-Requested-By: ambari" "https://<clusterNam
 The curl command retrieves a JSON document with HBase configuration information, and the grep command returns only the "hbase.zookeeper.quorum" entry, for example:
 
 ```output
-"hbase.zookeeper.quorum" : "zk0-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,zk4-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,zk3-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net"
+"hbase.zookeeper.quorum" : "<zookeepername1>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,<zookeepername2>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net,<zookeepername3>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net"
 ```
 
 The quorum host names value is the entire string to the right of the colon.
@@ -151,7 +151,7 @@ To retrieve the IP addresses for these hosts, use the following curl command for
 curl -u admin:<password> -X GET -H "X-Requested-By: ambari" "https://<clusterName>.azurehdinsight.net/api/v1/clusters/<clusterName>/hosts/<zookeeperHostFullName>" | grep "ip"
 ```
 
-In this curl command, `<zookeeperHostFullName>` is the full DNS name of a ZooKeeper host, such as the example `zk0-hdizc2.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net`. The output of the command contains the IP address for the specified host, for example:
+In this curl command, `<zookeeperHostFullName>` is the full DNS name of a ZooKeeper host, such as the example `<zookeepername1>.54o2oqawzlwevlfxgay2500xtg.dx.internal.cloudapp.net`. The output of the command contains the IP address for the specified host, for example:
 
 `100    "ip" : "10.0.0.9",`
 

articles/hdinsight/hbase/apache-hbase-query-with-phoenix.md

@@ -33,11 +33,11 @@ A portion of the output will look similar to:
 
 ```output
     {
-      "href" : "http://hn*.432dc3rlshou3ocf251eycoapa.bx.internal.cloudapp.net:8080/api/v1/clusters/myCluster/hosts/zk0-brim.432dc3rlshou3ocf251eycoapa.bx.internal.cloudapp.net/host_components/ZOOKEEPER_SERVER",
+      "href" : "http://hn*.432dc3rlshou3ocf251eycoapa.bx.internal.cloudapp.net:8080/api/v1/clusters/myCluster/hosts/<zookeepername1>.432dc3rlshou3ocf251eycoapa.bx.internal.cloudapp.net/host_components/ZOOKEEPER_SERVER",
       "HostRoles" : {
         "cluster_name" : "myCluster",
         "component_name" : "ZOOKEEPER_SERVER",
-        "host_name" : "zk0-brim.432dc3rlshou3ocf251eycoapa.bx.internal.cloudapp.net"
+        "host_name" : "<zookeepername1>.432dc3rlshou3ocf251eycoapa.bx.internal.cloudapp.net"
       }
 ```
 

articles/hdinsight/hbase/apache-hbase-replication.md

@@ -362,15 +362,15 @@ The `print_usage()` section of the [script](https://github.com/Azure/hbase-utils
 
 - **Copy specific tables (test1, test2, and test3) for all rows edited until now (current time stamp)**:
 
-  `-m hn1 -t "test1::;test2::;test3::" -p "zk5-hbrpl2;zk1-hbrpl2;zk5-hbrpl2:2181:/hbase-unsecure" -everythingTillNow`
+  `-m hn1 -t "test1::;test2::;test3::" -p "<zookeepername1>;<zookeepername2>;<zookeepername3>:2181:/hbase-unsecure" -everythingTillNow`
 
   Or:
 
-  `-m hn1 -t "test1::;test2::;test3::" --replication-peer="zk5-hbrpl2;zk1-hbrpl2;zk5-hbrpl2:2181:/hbase-unsecure" -everythingTillNow`
+  `-m hn1 -t "test1::;test2::;test3::" --replication-peer="<zookeepername1>;<zookeepername2>;<zookeepername3>:2181:/hbase-unsecure" -everythingTillNow`
 
 - **Copy specific tables with a specified time range**:
 
-  `-m hn1 -t "table1:0:452256397;table2:14141444:452256397" -p "zk5-hbrpl2;zk1-hbrpl2;zk5-hbrpl2:2181:/hbase-unsecure"`
+  `-m hn1 -t "table1:0:452256397;table2:14141444:452256397" -p "<zookeepername1>;<zookeepername2>;<zookeepername3>:2181:/hbase-unsecure"`
 
 ## Disable replication
 

articles/hdinsight/hdinsight-apache-storm-with-kafka.md

@@ -465,7 +465,7 @@ To create an Azure Virtual Network, and then create the Kafka and Storm clusters
     The value returned is similar to the following text:
 
     ```output
-    wn0-kafka.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:9092,wn1-kafka.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:9092
+    <brokername1>.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:9092,<brokername2>.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:9092
      ```
 
     > [!IMPORTANT]  
@@ -494,7 +494,7 @@ To create an Azure Virtual Network, and then create the Kafka and Storm clusters
     The value returned is similar to the following text:
 
     ```output
-    zk0-kafka.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:2181,zk2-kafka.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:2181
+    <zookeepername1>.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:2181,<zookeepername2>.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:2181
     ```
 
     > [!IMPORTANT]  
@@ -505,8 +505,8 @@ To create an Azure Virtual Network, and then create the Kafka and Storm clusters
 3. Edit the `dev.properties` file in the root of the project. Add the Broker and Zookeeper hosts information for the __Kafka__ cluster to the matching lines in this file. The following example is configured using the sample values from the previous steps:
 
     ```bash
-    kafka.zookeeper.hosts: zk0-kafka.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:2181,zk2-kafka.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:2181
-    kafka.broker.hosts: wn0-kafka.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:9092,wn1-kafka.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:9092
+    kafka.zookeeper.hosts: <zookeepername1>.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:2181,<zookeepername2>.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:2181
+    kafka.broker.hosts: <brokername1>.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:9092,<brokername2>.53qqkiavjsoeloiq3y1naf4hzc.ex.internal.cloudapp.net:9092
     kafka.topic: stormtopic
     ```
 

articles/hdinsight/hdinsight-plan-virtual-network-deployment.md

@@ -113,8 +113,8 @@ Azure provides name resolution for Azure services that are installed in a virtua
 
 * Any resource that is in the same Azure Virtual Network, by using the __internal DNS name__ of the resource. For example, when using the default name resolution, the following are examples of internal DNS names assigned to HDInsight worker nodes:
 
-  * wn0-hdinsi.0owcbllr5hze3hxdja3mqlrhhe.ex.internal.cloudapp.net
-  * wn2-hdinsi.0owcbllr5hze3hxdja3mqlrhhe.ex.internal.cloudapp.net
+  * <workername1>.0owcbllr5hze3hxdja3mqlrhhe.ex.internal.cloudapp.net
+  * <workername2>.0owcbllr5hze3hxdja3mqlrhhe.ex.internal.cloudapp.net
 
     Both these nodes can communicate directly with each other, and other nodes in HDInsight, by using internal DNS names.
 

articles/hdinsight/interactive-query/apache-hive-warehouse-connector.md

@@ -53,9 +53,9 @@ Hive Warehouse Connector needs separate clusters for Spark and Interactive Query
 
 1. From a web browser, navigate to `https://LLAPCLUSTERNAME.azurehdinsight.net/#/main/services/HIVE` where LLAPCLUSTERNAME is the name of your Interactive Query cluster.
 
-1. Navigate to **Summary** > **HiveServer2 Interactive JDBC URL** and note the value. The value may be similar to: `jdbc:hive2://zk0-iqgiro.rekufuk2y2ce.bx.internal.cloudapp.net:2181,zk1-iqgiro.rekufuk2y2ce.bx.internal.cloudapp.net:2181,zk4-iqgiro.rekufuk2y2ce.bx.internal.cloudapp.net:2181/;serviceDiscoveryMode=zooKeeper;zooKeeperNamespace=hiveserver2-interactive`.
+1. Navigate to **Summary** > **HiveServer2 Interactive JDBC URL** and note the value. The value may be similar to: `jdbc:hive2://<zookeepername1>.rekufuk2y2ce.bx.internal.cloudapp.net:2181,<zookeepername2>.rekufuk2y2ce.bx.internal.cloudapp.net:2181,<zookeepername3>.rekufuk2y2ce.bx.internal.cloudapp.net:2181/;serviceDiscoveryMode=zooKeeper;zooKeeperNamespace=hiveserver2-interactive`.
 
-1. Navigate to **Configs** > **Advanced** > **Advanced hive-site** > **hive.zookeeper.quorum** and note the value. The value may be similar to: `zk0-iqgiro.rekufuk2y2cezcbowjkbwfnyvd.bx.internal.cloudapp.net:2181,zk1-iqgiro.rekufuk2y2cezcbowjkbwfnyvd.bx.internal.cloudapp.net:2181,zk4-iqgiro.rekufuk2y2cezcbowjkbwfnyvd.bx.internal.cloudapp.net:2181`.
+1. Navigate to **Configs** > **Advanced** > **Advanced hive-site** > **hive.zookeeper.quorum** and note the value. The value may be similar to: `<zookeepername1>.rekufuk2y2cezcbowjkbwfnyvd.bx.internal.cloudapp.net:2181,<zookeepername2>.rekufuk2y2cezcbowjkbwfnyvd.bx.internal.cloudapp.net:2181,<zookeepername3>.rekufuk2y2cezcbowjkbwfnyvd.bx.internal.cloudapp.net:2181`.
 
 1. Navigate to **Configs** > **Advanced** > **General** > **hive.metastore.uris** and note the 
 value. The value may be similar to: `thrift://iqgiro.rekufuk2y2cezcbowjkbwfnyvd.bx.internal.cloudapp.net:9083,thrift://hn*.rekufuk2y2cezcbowjkbwfnyvd.bx.internal.cloudapp.net:9083`.

articles/hdinsight/interactive-query/interactive-query-troubleshoot-inaccessible-hive-view.md

@@ -15,7 +15,7 @@ This article describes troubleshooting steps and possible resolutions for issues
 The Hive View is inaccessible, and the logs in `/var/log/hive` show an error similar to the following:
 
 ```
-ERROR [Curator-Framework-0]: curator.ConnectionState (ConnectionState.java:checkTimeouts(200)) - Connection timed out for connection string (zk0-cluster.cloud.wbmi.com:2181,zk1-cluster.cloud.wbmi.com:2181,zk2-cluster.cloud.wbmi.com:2181) and timeout (15000) / elapsed (21852)
+ERROR [Curator-Framework-0]: curator.ConnectionState (ConnectionState.java:checkTimeouts(200)) - Connection timed out for connection string (<zookeepername1>.cloud.wbmi.com:2181,<zookeepername2>.cloud.wbmi.com:2181,<zookeepername3>.cloud.wbmi.com:2181) and timeout (15000) / elapsed (21852)
 ```
 
 ## Cause
@@ -29,8 +29,8 @@ It is possible that Hive may fail to establish a connection to Zookeeper, which
 1. Check if the Zookeeper service has a ZNode entry for Hive Server2. The value will be missing or incorrect.
 
     ```
-    /usr/hdp/2.6.2.25-1/zookeeper/bin/zkCli.sh -server zk1-wbwdhs
-    [zk: zk0-cluster(CONNECTED) 0] ls /hiveserver2-hive2
+    /usr/hdp/2.6.2.25-1/zookeeper/bin/zkCli.sh -server <zookeepername1>
+    [zk: <zookeepername1>(CONNECTED) 0] ls /hiveserver2-hive2
     ```
 
 1. To re-establish connectivity, reboot the Zookeeper nodes, and reboot HiveServer2.

articles/hdinsight/kafka/apache-kafka-connector-iot-hub.md

@@ -95,7 +95,7 @@ From your SSH connection to the edge node, use the following steps to configure
 
     Copy the values for later use. The value returned is similar to the following text:
 
-    `wn0-kafka.w5ijyohcxt5uvdhhuaz5ra4u5f.ex.internal.cloudapp.net:9092,wn1-kafka.w5ijyohcxt5uvdhhuaz5ra4u5f.ex.internal.cloudapp.net:9092`
+    `<brokername1>.w5ijyohcxt5uvdhhuaz5ra4u5f.ex.internal.cloudapp.net:9092,<brokername2>.w5ijyohcxt5uvdhhuaz5ra4u5f.ex.internal.cloudapp.net:9092`
 
 1. Get the address of the Apache Zookeeper nodes. There are several Zookeeper nodes in the cluster, but you only need to reference one or two. Use the following command to the store the addresses in the variable `KAFKAZKHOSTS`:
 

articles/hdinsight/kafka/apache-kafka-get-started.md

@@ -170,7 +170,7 @@ In this section, you get the host information from the Apache Ambari REST API on
 
     This command returns information similar to the following text:
 
-    `zk0-kafka.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181,zk2-kafka.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181`
+    `<zookeepername1>.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181,<zookeepername2>.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181`
 
 1. To set an environment variable with Apache Kafka broker host information, use the following command:
 
@@ -189,7 +189,7 @@ In this section, you get the host information from the Apache Ambari REST API on
 
     This command returns information similar to the following text:
 
-    `wn1-kafka.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092,wn0-kafka.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092`
+    `<brokername1>.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092,<brokername2>.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092`
 
 ## Manage Apache Kafka topics
 

articles/hdinsight/kafka/apache-kafka-quickstart-powershell.md

@@ -203,7 +203,7 @@ In this section, you get the host information from the Apache Ambari REST API on
 
     This command returns information similar to the following text:
 
-    `zk0-kafka.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181,zk2-kafka.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181`
+    `<zookeepername1>.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181,<zookeepername2>.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181`
 
 5. To set an environment variable with Kafka broker host information, use the following command:
 
@@ -221,7 +221,7 @@ In this section, you get the host information from the Apache Ambari REST API on
 
     This command returns information similar to the following text:
 
-    `wn1-kafka.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092,wn0-kafka.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092`
+    `<brokername1>.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092,<brokername2>.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092`
 
 ## Manage Apache Kafka topics
 

articles/hdinsight/kafka/apache-kafka-quickstart-resource-manager-template.md

@@ -104,7 +104,7 @@ In this section, you get the host information from the Ambari REST API on the cl
 
     This command returns information similar to the following text:
 
-    `zk0-kafka.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181,zk2-kafka.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181`
+    `<zookeepername1>.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181,<zookeepername2>.eahjefxxp1netdbyklgqj5y1ud.ex.internal.cloudapp.net:2181`
 
 1. To set an environment variable with Kafka broker host information, use the following command:
 
@@ -122,7 +122,7 @@ In this section, you get the host information from the Ambari REST API on the cl
 
     This command returns information similar to the following text:
 
-    `wn1-kafka.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092,wn0-kafka.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092`
+    `<brokername1>.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092,<brokername2>.eahjefxxp1netdbyklgqj5y1ud.cx.internal.cloudapp.net:9092`
 
 ## Manage Apache Kafka topics
 

articles/hdinsight/spark/apache-spark-troubleshoot-outofmemory.md

@@ -145,7 +145,7 @@ Livy Server cannot be started on an Apache Spark [(Spark 2.1 on Linux (HDI 3.6)]
 17/07/27 17:52:50 INFO ZooKeeper: Client environment:user.name=livy
 17/07/27 17:52:50 INFO ZooKeeper: Client environment:user.home=/home/livy
 17/07/27 17:52:50 INFO ZooKeeper: Client environment:user.dir=/home/livy
-17/07/27 17:52:50 INFO ZooKeeper: Initiating client connection, connectString=zk2-kcspark.cxtzifsbseee1genzixf44zzga.gx.internal.cloudapp.net:2181,zk3-kcspark.cxtzifsbseee1genzixf44zzga.gx.internal.cloudapp.net:2181,zk6-kcspark.cxtzifsbseee1genzixf44zzga.gx.internal.cloudapp.net:2181 sessionTimeout=60000 watcher=org.apache.curator.ConnectionState@25fb8912
+17/07/27 17:52:50 INFO ZooKeeper: Initiating client connection, connectString=<zookeepername1>.cxtzifsbseee1genzixf44zzga.gx.internal.cloudapp.net:2181,<zookeepername2>.cxtzifsbseee1genzixf44zzga.gx.internal.cloudapp.net:2181,<zookeepername3>.cxtzifsbseee1genzixf44zzga.gx.internal.cloudapp.net:2181 sessionTimeout=60000 watcher=org.apache.curator.ConnectionState@25fb8912
 17/07/27 17:52:50 INFO StateStore$: Using ZooKeeperStateStore for recovery.
 17/07/27 17:52:50 INFO ClientCnxn: Opening socket connection to server 10.0.0.61/10.0.0.61:2181. Will not attempt to authenticate using SASL (unknown error)
 17/07/27 17:52:50 INFO ClientCnxn: Socket connection established to 10.0.0.61/10.0.0.61:2181, initiating session
@@ -205,13 +205,13 @@ Delete all entries using steps detailed below.
 1. Above command listed all the zookeepers for my cluster
 
     ```bash
-    /etc/hadoop/conf/core-site.xml:      <value>zk1-hwxspa.lnuwp5akw5ie1j2gi2amtuuimc.dx.internal.cloudapp.net:2181,zk2-      hwxspa.lnuwp5akw5ie1j2gi2amtuuimc.dx.internal.cloudapp.net:2181,zk4-hwxspa.lnuwp5akw5ie1j2gi2amtuuimc.dx.internal.cloudapp.net:2181</value>
+    /etc/hadoop/conf/core-site.xml:      <value><zookeepername1>.lnuwp5akw5ie1j2gi2amtuuimc.dx.internal.cloudapp.net:2181,<zookeepername2>.lnuwp5akw5ie1j2gi2amtuuimc.dx.internal.cloudapp.net:2181,<zookeepername3>.lnuwp5akw5ie1j2gi2amtuuimc.dx.internal.cloudapp.net:2181</value>
     ```
 
 1. Get all the IP address of the zookeeper nodes using ping Or you can also connect to zookeeper from headnode using zk name
 
     ```bash
-    /usr/hdp/current/zookeeper-client/bin/zkCli.sh -server zk2-hwxspa:2181
+    /usr/hdp/current/zookeeper-client/bin/zkCli.sh -server <zookeepername1>:2181
     ```
 
 1. Once you are connected to zookeeper execute the following command to list all the sessions that are attempted to restart.