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Ship it!




Ship It!

- Laszlo Puskas


On March 5, 2017, 9:38 p.m., Robert Levas wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/57324/
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> 
> (Updated March 5, 2017, 9:38 p.m.)
> 
> 
> Review request for Ambari, Alejandro Fernandez, Attila Magyar, Balázs Bence 
> Sári, Eugene Chekanskiy, Jonathan Hurley, Laszlo Puskas, Sebastian Toader, 
> and Sid Wagle.
> 
> 
> Bugs: AMBARI-20309
>     https://issues.apache.org/jira/browse/AMBARI-20309
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> HBase Master CPU Utilization Alert is in unknown state due to kinit error:
> 
> ```
> Execution of '/usr/bin/kinit -c 
> /var/lib/ambari-agent/tmp/curl_krb_cache/metric_alert_ambari-qa_cc_56787c2122a8214ca9775f3433361f8b
>  -kt HTTP/_h...@example.com /etc/security/keytabs/spnego.service.keytab > 
> /dev/null' returned 1. kinit: Client not found in Kerberos database while 
> getting initial credentials
> ```
> 
> This issue is also seen in /var/log/krb5kdc.log:
> 
> ```
> Mar 03 16:43:06 c6401.ambari.apache.org krb5kdc[4749](info): AS_REQ (4 etypes 
> {18 17 16 23}) 192.168.64.101: CLIENT_NOT_FOUND: 
> /etc/security/keytabs/spnego.service.key...@example.com for 
> krbtgt/example....@example.com, Client not found in Kerberos database
> ```
> 
> #Cause
> It appears that the HBASE alerts.json file 
> (`common-services/HBASE/0.96.0.2.0/alerts.json`) has swapped values for the 
> `kerberos_keytab` and `kerberos_principal` properties.
> 
> ```
>       {
>         "name": "hbase_master_cpu",
>         "label": "HBase Master CPU Utilization",
>         "description": "This host-level alert is triggered if CPU utilization 
> of the HBase Master exceeds certain warning and critical thresholds. It 
> checks the HBase Master JMX Servlet for the SystemCPULoad property. The 
> threshold values are in percent.",
>         "interval": 5,
>         "scope": "ANY",
>         "enabled": true,
>         "source": {
>           "type": "METRIC",
>           "uri": {
>             "http": "{{hbase-site/hbase.master.info.port}}",
>             "default_port": 60010,
>             "connection_timeout": 5.0,
>             "kerberos_keytab": 
> "{{hbase-site/hbase.security.authentication.spnego.kerberos.principal}}",
>             "kerberos_principal": 
> "{{hbase-site/hbase.security.authentication.spnego.kerberos.keytab}}"
>           },
>           "reporting": {
>             "ok": {
>               "text": "{1} CPU, load {0:.1%}"
>             },
>             "warning": {
>               "text": "{1} CPU, load {0:.1%}",
>               "value": 200
>             },
>             "critical": {
>               "text": "{1} CPU, load {0:.1%}",
>               "value": 250
>             },
>             "units" : "%",
>             "type": "PERCENT"
>           },
>           "jmx": {
>             "property_list": [
>               "java.lang:type=OperatingSystem/SystemCpuLoad",
>               "java.lang:type=OperatingSystem/AvailableProcessors"
>             ],
>             "value": "{0} * 100"
>           }
>         }
>       }
> ```
> 
> Notice:
> ```
> "kerberos_keytab": 
> "{{hbase-site/hbase.security.authentication.spnego.kerberos.principal}}",
>             "kerberos_principal": 
> "{{hbase-site/hbase.security.authentication.spnego.kerberos.keytab}}"
> ```
> 
> #Solution
> Fix values for the `kerberos_keytab` and `kerberos_principal` properties in 
> `common-services/HBASE/0.96.0.2.0/alerts.json`:
> 
> ```
> "kerberos_principal": 
> "{{hbase-site/hbase.security.authentication.spnego.kerberos.principal}}",
>             "kerberos_keytab": 
> "{{hbase-site/hbase.security.authentication.spnego.kerberos.keytab}}"
> ```
> 
> 
> Diffs
> -----
> 
>   
> ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog250.java
>  2a684dc 
>   
> ambari-server/src/main/resources/common-services/HBASE/0.96.0.2.0/alerts.json 
> 1b3ae25 
>   
> ambari-server/src/test/java/org/apache/ambari/server/upgrade/UpgradeCatalog250Test.java
>  7ee66ef 
> 
> 
> Diff: https://reviews.apache.org/r/57324/diff/1/
> 
> 
> Testing
> -------
> 
> Manually tested in new Ambari 2.5.0 cluster and upgrade scenario from Ambari 
> 2.4.2 to Ambari 2.5.0
> 
> # Local test results: PASSED
> 
> # Jenkins test results: PENDING
> 
> 
> Thanks,
> 
> Robert Levas
> 
>

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