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From Artem Ervits <artemerv...@gmail.com>
Subject Re: Any way to reset Ambari Install Wizard?
Date Fri, 30 Oct 2015 15:25:04 GMT
note that if a bad config is included in your json which may happen if you
gather the configs, once you reset and reapply, it may come back and all
these steps will be useless. We need to figure out what the issue is. I
want him to avoid going the reset route until we exhaust every other option.

On Fri, Oct 30, 2015 at 10:47 AM, Adam Gover <agover@blackberry.com> wrote:

>
>
> Hi There Ken,
>
> Lets try this again… now actually complete
>
> So I’ve been following along on this thread hoping someone would come back
> with a better solution than the one I have.  Since I haven’t seen any Ill
> provide the details to my solution.
>
> Prereqs/comments:
>
>    - tested only on Ambari 2.1.2 – but should work on Ambari 2+ (also
>    will work with some tweaks on 1.6, but won’t work on 1.7)
>    - Tested using external postgres database but should also work with
>    mysql
>    - Test this on your own as it tends to have issues under some
>    circumstances
>
>
> I can’t provide the code I use to accomplish all this – but ill provide an
> outline which should allow you to do the same thing.
>
> General info:
> Base path for access to rest api is:
> http://<ambari host>:8080/api/v1
>
> This can be accessed using a standard curl call similar to:
> Curl –u admin:admin –H ‘X-Requested-By: ambari’ http://<ambari
>  host>:8080/api/v1
>
> Ill indicate path to access info will just say “goto rest” and provide
> additional path info (any options needed will need to be inserted before
> the url).  Also note I’m in some cases copying parts of the scripts I’m
> using so the values of the variables need to be populated.
>
>
>    1. Backup all external databases (hive/oozie/ambari)
>    2. Backup the filesystem after forcing a check point
>    3. Before downing ambari collect a complete set of configs:
>       1. Get list of all configs available
>       Goto rest: clusters/${cluster_name}/?fields=Clusters/desired_configs
>
>       2. Using the list retrieve ALL the json config files for the cluster
>       Goto rest:
>       http://${ambari_host}:8080/api/v1/clusters/${cluster_name}/configurations?(type=${config_type}&tag=${tag})
>
>
>       So cluster_name=your defined cluster name,
>       config_type=config_filename, tag=the most recent version of this config
>       file (this is provided by the first rest call)
>
>       Note that the output here is NOT usable directly – you will need to
>       slightly reformat these files prior to reimporting them
>
>
>    1.  Next shutdown ambari
>    2. On the command line as root execute “ambari-server reset”
>    3. Setup the base cluster name:
>    Goto rest: OPTION: -d '{"Clusters":{"version":"HDP-2.2"}}’
>     /clusters/${cluster_name}
>    4. For each host on the cluster – add it to the cluster
>    Goto rest: OPTION –X POST /clusters/${cluster_name}/hosts/${hostname}
>    5. Push ALL your configs captured in the part 1/3rd step to the
>    cluster via
>    May want to use this:
>    /var/lib/ambari-server/resources/scripts/configs.sh
>
>    NOTE I do this using perl – its basically a raw read that pushes using
>    (PUT) into
>    Goto rest: OPTION –X PUT /clusters/${cluster_name}
>    6. Next add each service & its associated components
>
>    To add service:
>    Goto rest: OPTION –X POST
>    /clusters/${cluster_name}/services/${service_name}
>
>    To add component:
>    Goto rest: OPTION –X POST
>    /clusters/${cluster_name}/services/${service_name}/components/${component}
>    7. Next for each host apply the required components using the follow 2
>    rest calls
>    Goto rest: OPTION –X POST
>    /clusters/${cluster_name}/hosts/${hostname}/host_components/${component}
>    Goto rest: OPTION –X PUT OPTION –d
>    '{"HostRoles":{"state":"INSTALLED"}}'
>    /clusters/${cluster_name}/hosts/${hostname}/host_components/${component}
>    8. Next set cluster status
>    Goto rest: OPTION –X POST OPTION –d '{"CLUSTER_CURRENT_STATUS":
>    "{"clusterState":"CLUSTER_STARTED_5"}"}’  /persist
>    9. Now set each service to an installed state
>    Goto rest: OPTION –X PUT OPTION -d
>    '{"ServiceInfo":{"state":"INSTALLED"}}’
>     /clusters/${cluster_name}/services/${service_name}
>    10. Finally set the cluster itself to INSTALLED – this (as far as I
>    know) is best done using SQL - I’m sure there is a rest call
>    but I haven’t found it yet
>    Update clusters set
>    provisioning_state=‘INSTALLED’,security_type=‘NONE’ where
>    cluster_name=${cluster_name}
>
>
> ALL of this can be automated and unless you have a 2 node cluster I would.
>
> NOTES – this process will work with HA & kerberized clusters but will need
> additional steps (especially for kerberos)
>
> Anyways I hope this helps – its complicated but doable and will save you
> copying/rebuilding which in larger clusters is really not doable.
>
> Cheers
> Adam
>
>
> From: Ken Barclay <kbarclay@ancestry.com>
> Reply-To: "user@ambari.apache.org" <user@ambari.apache.org>
> Date: Friday, October 30, 2015 at 2:34 AM
> To: "user@ambari.apache.org" <user@ambari.apache.org>
> Subject: Re: Any way to reset Ambari Install Wizard?
>
> Hi Artem,
>
> I upgraded all Ambari components to 2.1.2, restarted everything, and after
> logging in, restarted all components where it was indicated.
>
> I tried the Add Service wizard for Kafka, and got to the page that allows
> me to assign masters and such, but clicking Next after that takes me to
> Customize Services, which gets stuck because the Next button on that page
> is never sensitized.  It just freezes there, saying it has recommended
> configurations, with the update icon spinning in the middle. All I can do
> is click Back at that point.
>
> Anything else I can try?
>
> Thanks
> Ken
>
> From: Artem Ervits <dbist13@gmail.com>
> Reply-To: "user@ambari.apache.org" <user@ambari.apache.org>
> Date: Thursday, October 29, 2015 at 1:55 PM
> To: "user@ambari.apache.org" <user@ambari.apache.org>
> Subject: Re: Any way to reset Ambari Install Wizard?
>
> Please upgrade to latest 2.1.2 and restart all agents and Ambari server.
> Ctrl-shft-r on browser after you navigate to ambari URL. Login and let me
> know if it still shows same problem.
> On Oct 29, 2015 10:19 AM, "Ken Barclay" <kbarclay@ancestry.com> wrote:
>
>> Hi Artem,
>>
>> I started with 2.0.1, and upgraded it to 2.1 back in August.
>>
>> From: Artem Ervits <dbist13@gmail.com>
>> Reply-To: "user@ambari.apache.org" <user@ambari.apache.org>
>> Date: Thursday, October 29, 2015 at 2:09 AM
>> To: "user@ambari.apache.org" <user@ambari.apache.org>
>> Subject: Re: Any way to reset Ambari Install Wizard?
>>
>> What version of Ambari are you running?
>> On Oct 27, 2015 6:51 PM, "Ken Barclay" <kbarclay@ancestry.com> wrote:
>>
>>> Hello,
>>>
>>> I’m returning to an issue we’ve left hanging since July – we have now to
>>> fix Ambari on this cluster or take the whole cluster down and reinstall
>>> from scratch.
>>>
>>> Our situation is that although our HDP 2.2 cluster is running well,
>>> Ambari cannot be used to install anything because the wizard is broken.
>>>
>>> I did a restart of Ambari server and agents per Artem, but without
>>> knowing exactly what changes to make to the postgres tables I’m reluctant
>>> to try that part. We also tried to add a new component (Spark) using the
>>> Ambari API instead of the wizard, but that also failed, as did trying to
>>> remove the Spark (again via the API) that had failed to install.
>>>
>>> We have 1.5T of monitoring data on this 4-node cluster that want to
>>> preserve. The cluster is dedicated to storing metrics in HBase via OpenTSDB
>>> and that is all it is used for.
>>>
>>> I just want to confirm with the group that since Ambari can only be used
>>> to manage a cluster that it installed itself, our best option in this
>>> scenario would be to:
>>>
>>> Shut down monitoring
>>> Copy all the data to another cluster
>>> Completely remove Ambari and HDP per
>>> https://cwiki.apache.org/confluence/display/AMBARI/Host+Cleanup+for+Ambari+and+Stack
>>> Do a fresh install of HDP 2.2 using the latest Ambari, and
>>> Copy the data back to the new cluster.
>>>
>>> Please let us know if this is a valid approach
>>> Thanks
>>>
>>> Ken
>>>
>>>
>>>
>>> From: <dbist13@gmail.com> on behalf of Artem Ervits <
>>> artemervits@gmail.com>
>>> Reply-To: "user@ambari.apache.org" <user@ambari.apache.org>
>>> Date: Tuesday, July 28, 2015 at 12:48 PM
>>> To: "user@ambari.apache.org" <user@ambari.apache.org>
>>> Subject: Re: Any way to reset Ambari Install Wizard?
>>>
>>> try to restart ambari server and agents, then stop and start services,
>>> sometimes services need to announce themselves to Ambari that they're
>>> installed. Always refer to the ambari-server log. Worst case scenario,
>>> delete Ambari_metrics service with API and clean up the postgres DB
>>> manually, tables to concentrate on are hostservicedesiredstate,
>>> servicedesiredstate etc. This should be last resort.
>>>
>>> On Tue, Jul 28, 2015 at 3:11 PM, Benoit Perroud <benoit@noisette.ch>
>>> wrote:
>>>
>>>> Some manual update in DB is most likely needed.
>>>>
>>>> *WARNING* use this at your own risk
>>>>
>>>> The table that needs to be updated is cluster_version.
>>>>
>>>> As far as I tested 2.1, it required less manual intervention than
>>>> 2.0.1. Upgrade has a retry button for most of the steps, and this is really
>>>> cool.
>>>>
>>>> Hope this help.
>>>>
>>>> Benoit
>>>>
>>>>
>>>>
>>>> 2015-07-28 20:01 GMT+02:00 Ken Barclay <kbarclay@ancestry.com>:
>>>>
>>>>> Hello,
>>>>>
>>>>> I upgraded a small test cluster from HDP 2.1 to HDP 2.2 and Ambari
>>>>> 2.0.1. In following the steps to replace Nagios + Ganglia with the Ambari
>>>>> Metrics System using the Ambari Wizard, an install failure occurred on
one
>>>>> node due to an outdated glibc library. I updated glibc and verified the
>>>>> Metrics packages could be installed, but couldn’t go back and finish
the
>>>>> installation through the wizard. The problem is: it flags some of the
>>>>> default settings, saying they need to be changed, but it skips past the
>>>>> screen very quickly that enables those settings to be changed, without
>>>>> allowing anything to be entered. So the button that allows you to proceed
>>>>> with the installation never becomes enabled.
>>>>>
>>>>> I subsequently manually finished the Metrics installation using the
>>>>> Ambari API and have it running in Distributed mode. But Ambari’s wizard
>>>>> cannot be used for anything now: the same problem described above
>>>>> occurs for every service I try to install.
>>>>>
>>>>> Can Ambari be reset somehow in this situation, or do I need to
>>>>> reinstall it?
>>>>> Or do you recommend installing 2.1?
>>>>>
>>>>> Thanks
>>>>> Ken
>>>>>
>>>>
>>>>
>>>

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