Hi Cos,

Are there any configuration files in the configuration directory of the
service package (NSNN/configuration/) ?

Thanks

Jaimin Jetly




On Fri, Dec 12, 2014 at 2:55 PM, Konstantin Boudnik <[email protected]> wrote:
>
> No JS errors. but that seems to be the answer. GET on
>
> http://vmhost05-hbase3.bdva.wandisco.com:8080/api/v1/stacks/HDP/versions/2.1.WANdisco/services/NSNN/configurations?fields=*&_=1418424642224
> returns "items" : [ ]
>
> for whatever reason.
>
> My service per Jaimin's request is here (pretty simple) as of now:
>
> <metainfo>
>   <schemaVersion>2.0</schemaVersion>
>   <services>
>     <service>
>       <name>NSNN</name>
>       <displayName>WANdisco NSNN</displayName>
>       <comment>WANdisco active-active Hadoop Namenode</comment>
>       <version>1.9.9-hdp2.1</version>
>
>       <components>
>         <component>
>           <name>NSNAMENODE</name>
>           <displayName>NameNode</displayName>
>           <category>MASTER</category>
>           <cardinality>ALL</cardinality>
>           <commandScript>
>             <script>scripts/namenode.py</script>
>             <scriptType>PYTHON</scriptType>
>             <timeout>600</timeout>
>           </commandScript>
>         </component>
>       </components>
>
>       <requiredServices>
>       </requiredServices>
>
>       <configuration-dependencies>
>         <config-type>core-site</config-type>
>         <config-type>hdfs-site</config-type>
>         <config-type>hadoop-env</config-type>
>         <config-type>hadoop-policy</config-type>
>         <config-type>hdfs-log4j</config-type>
>       </configuration-dependencies>
>
>     </service>
>   </services>
> </metainfo>
>
> Another issue, is that Ambari insists that I need ZK service although I am
> explicitely have an empty list in <requiredServices> element.
>
> Thanks for your help, guys!
>   Cos
>
>
> On Fri, Dec 12, 2014 at 02:26PM, Yusaku Sako wrote:
> > Hi Cos,
> >
> > That should just work.
> > Not sure why it's not working for you.
> > You are using Ambari 1.7.0, right?
> > Are you getting any JS errors in the browser?
> >
> > Yusaku
> >
> > On Thu, Dec 11, 2014 at 4:47 PM, Konstantin Boudnik <[email protected]>
> wrote:
> > >
> > > The next culprit I see is "Customize Services" screen. Should I be
> able to
> > > customize my new (custom) service once I have assigned the hosts for
> it?
> > > 'cause I don't see a tab for my NSNN service in that screen of the
> wizard.
> > >
> > > Is it supported at all or I'd need to find a different way to
> configure my
> > > addition?
> > >
> > > Thanks,
> > >   Cos
> > >
> > > On Fri, Dec 12, 2014 at 12:22AM, Konstantin Boudnik wrote:
> > > > And it seems to be working in 1.7.
> > > >
> > > > Thanks everyone for your help - now into more detailed service
> > > definition.
> > > >
> > > > Cos
> > > >
> > > > On Tue, Dec 09, 2014 at 08:45PM, Konstantin Boudnik wrote:
> > > > > Ah! Very timely remark indeed! Will spin a new one in the morning
> and
> > > have it
> > > > > a go. Thanks!
> > > > >
> > > > > On Tue, Dec 09, 2014 at 07:25PM, Yusaku Sako wrote:
> > > > > > Hi Konstantin,
> > > > > >
> > > > > > Custom services added via the API won't automatically show up in
> the
> > > UI if
> > > > > > you are using Ambari 1.6.1 or below.
> > > > > > Please try with Ambari 1.7.0.
> > > > > >
> > > > > > Thanks,
> > > > > > Yusaku
> > > > > >
> > > > > >
> > > > > > On Tue, Dec 9, 2014 at 6:42 PM, Konstantin Boudnik <
> [email protected]>
> > > wrote:
> > > > > >
> > > > > > > Thanks Nate - that does the trick. With the command-line
> upgrade +
> > > a curl
> > > > > > > call
> > > > > > > to add my new service now I can see it among
> > > > > > >
> > > > > > >
> > >
> http://vmhost05-hbase3.bdva.wandisco.com:8080/api/v1/clusters/DC-2/services
> > > > > > >
> > > > > > > The issues I still see are:
> > > > > > >  - the service doesn't appear in "Add Service" wizard
> > > > > > >  - even after getting added by POST'ing
> > > > > > >    {"ServiceInfo":{"service_name":"NSNN"}} info, I don't see
> the
> > > service in
> > > > > > >    the dashboard. It might be caused by some inconsistencies
> in my
> > > service
> > > > > > >    definition as I can use the same procedure to add Tez
> service,
> > > and being
> > > > > > >    able to see it in the dashboard.
> > > > > > >
> > > > > > > Will dig a bit more into this tomorrow and report back if I hit
> > > anything
> > > > > > > new.
> > > > > > >
> > > > > > > Thank you all guys for your help - quite appreciated!
> > > > > > >   Cos
> > > > > > >
> > > > > > > On Mon, Dec 08, 2014 at 05:11PM, Nate Cole wrote:
> > > > > > > > Cos,
> > > > > > > >
> > > > > > > > There is an ambari server command that should allow you to
> > > switch the
> > > > > > > version.  Here are the steps I took to change the cluster
> version:
> > > > > > > >
> > > > > > > > 1. Install a cluster as normal (I used cluster HDP-2.1 as the
> > > stack).
> > > > > > > > 2. In /var/lib/ambari-server/resources/stacks/HDP, copy 2.1
> to
> > > > > > > 2.1.TestStack
> > > > > > > > 3. Shutdown ambari.
> > > > > > > > 4. ran:  ambari-server upgradestack HDP-2.1.TestStack
> > > > > > > > 5. Start ambari.
> > > > > > > > 6. On the cluster admin page, verified at the top of the page
> > > that the
> > > > > > > cluster says "HDP-2.1.TestStack"
> > > > > > > >
> > > > > > > > Hope that helps,
> > > > > > > > Nate
> > > > > > > >
> > > > > > > > On Dec 8, 2014, at 4:24 PM, Konstantin Boudnik <
> [email protected]>
> > > wrote:
> > > > > > > >
> > > > > > > > > On Mon, Dec 08, 2014 at 04:14PM, John Speidel wrote:
> > > > > > > > >> Cos,
> > > > > > > > >>
> > > > > > > > >> I don't know why this is occurring.  I have not actually
> ever
> > > changed
> > > > > > > the
> > > > > > > > >> stack of a running cluster, my response was a result of my
> > > > > > > understanding
> > > > > > > > >> and talking to others that have done this.
> > > > > > > > >>
> > > > > > > > >> Hopefully somebody that has actually done this can
> comment.
> > > > > > > > >> In the meantime, I will see if I can find somebody that
> may
> > > may know
> > > > > > > why
> > > > > > > > >> this isn't working for you.
> > > > > > > > >
> > > > > > > > > Thank you very much - really appreciate your help! In the
> > > interest of
> > > > > > > full
> > > > > > > > > disclosure: I am using 1.6.1 server, not sure if this is
> of any
> > > > > > > significance.
> > > > > > > > >
> > > > > > > > > Cos
> > > > > > > > >
> > > > > > > > >> On Fri, Dec 5, 2014 at 8:38 PM, Konstantin Boudnik <
> > > [email protected]>
> > > > > > > wrote:
> > > > > > > > >>
> > > > > > > > >>> release Thanks for the info John. I think I am getting
> > > there, but not
> > > > > > > > >>> completely....
> > > > > > > > >>>
> > > > > > > > >>> So, here's what I've done:
> > > > > > > > >>> - added service, bounced Ambari server
> > > > > > > > >>>
> > > > > > > > >>> - curl to
> > > > > > >
> http://vmhost05-hbase3.bdva.wandisco.com:8080/api/v1/stacks/HDP/
> > > > > > > > >>> says that I have new stack
> > > > > > > > >>>    {
> > > > > > > > >>>      "href" : "
> > > > > > > > >>>
> > > > > > >
> > >
> http://vmhost05-hbase3.bdva.wandisco.com:8080/api/v1/stacks/HDP/versions/2.1.WANdisco
> > > > > > > > >>> ",
> > > > > > > > >>>      "Versions" : {
> > > > > > > > >>>        "stack_name" : "HDP",
> > > > > > > > >>>        "stack_version" : "2.1.WANdisco"
> > > > > > > > >>>      }
> > > > > > > > >>>    }
> > > > > > > > >>>
> > > > > > > > >>> - ran update
> > > > > > > > >>>  curl -u admin:admin -i -X PUT -H  'X-Requested-By:
> ambari'
> > > -d
> > > > > > > > >>> '{"Clusters":{"version":"HDP-2.1.WANdisco"}}'
> > > > > > > > >>>
> > > http://vmhost05-hbase3.bdva.wandisco.com:8080/api/v1/clusters/DC-2
> > > > > > > > >>>
> > > > > > > > >>> The result was:
> > > > > > > > >>> HTTP/1.1 200 OK
> > > > > > > > >>> Set-Cookie:
> AMBARISESSIONID=vueucwdh8p6mkmcygj803vi9;Path=/
> > > > > > > > >>> Expires: Thu, 01 Jan 1970 00:00:00 GMT
> > > > > > > > >>> Content-Type: text/plain
> > > > > > > > >>> Content-Length: 0
> > > > > > > > >>> Server: Jetty(7.6.7.v20120910)
> > > > > > > > >>>
> > > > > > > > >>> However, running
> > > > > > > > >>>        curl -u admin:admin
> > > > > > > > >>>
> > > http://vmhost05-hbase3.bdva.wandisco.com:8080/api/v1/clusters/
> > > > > > > > >>>
> > > > > > > > >>> Still gives me this....
> > > > > > > > >>> {
> > > > > > > > >>>  "href" : "
> > > > > > > http://vmhost05-hbase3.bdva.wandisco.com:8080/api/v1/clusters/
> > > > > > > > >>> ",
> > > > > > > > >>>  "items" : [
> > > > > > > > >>>    {
> > > > > > > > >>>      "href" : "
> > > > > > > > >>>
> > > http://vmhost05-hbase3.bdva.wandisco.com:8080/api/v1/clusters/DC-2";,
> > > > > > > > >>>      "Clusters" : {
> > > > > > > > >>>        "cluster_name" : "DC-2",
> > > > > > > > >>>        "version" : "HDP-2.1"
> > > > > > > > >>>      }
> > > > > > > > >>>    }
> > > > > > > > >>>  ]
> > > > > > > > >>>
> > > > > > > > >>> Any ideas/hints? Thank you very much for your help!
> > > > > > > > >>>  Cos
> > > > > > > > >>>
> > > > > > > > >>> On Thu, Dec 04, 2014 at 08:08PM, John Speidel wrote:
> > > > > > > > >>>> Cos,
> > > > > > > > >>>>
> > > > > > > > >>>> Yes, if you are able to push a new stack to the ambari
> > > server hosts
> > > > > > > > >>>> filesystem, you can use a REST api call to update the
> > > cluster to be
> > > > > > > > >>>> associated with the new stack.
> > > > > > > > >>>>
> > > > > > > > >>>> So, the steps would would look like this:
> > > > > > > > >>>> - install cluster with existing stack
> > > > > > > > >>>> - create new stack with additional services/components
> > > > > > > > >>>> - write the new stack to the filesystem of the ambari
> > > server host
> > > > > > > > >>>> - bounce ambari server
> > > > > > > > >>>>  -- after the server restart, the hash of the stacks
> > > directory is
> > > > > > > > >>>> recalculated which will result in the new updated stack
> to
> > > be
> > > > > > > pushed to
> > > > > > > > >>> the
> > > > > > > > >>>> agents (not immediate, the check of the stack dir hash
> > > occurs every
> > > > > > > n(not
> > > > > > > > >>>> sure of exact value) heartbeats from the agents)
> > > > > > > > >>>> - do an update (PUT)  on the cluster resource changing
> the
> > > value of
> > > > > > > the
> > > > > > > > >>>> Clusters/version property to point to the new stack
> > > > > > > > >>>>
> > > > > > > > >>>> When these steps are completed the new
> service/components
> > > should be
> > > > > > > > >>>> recognized by ambari.
> > > > > > > > >>>>
> > > > > > > > >>>> -John
> > > > > > > > >>>>
> > > > > > > > >>>>
> > > > > > > > >>>> On Thu, Dec 4, 2014 at 6:07 PM, Konstantin Boudnik <
> > > [email protected]>
> > > > > > > > >>> wrote:
> > > > > > > > >>>>
> > > > > > > > >>>>> Hi John.
> > > > > > > > >>>>>
> > > > > > > > >>>>> Thanks for more info. I'd like to pry more for a little
> > > bit of
> > > > > > > > >>> information
> > > > > > > > >>>>> (in-lined):
> > > > > > > > >>>>>
> > > > > > > > >>>>> On Thu, Dec 04, 2014 at 04:19PM, John Speidel wrote:
> > > > > > > > >>>>>> Hi Cos,
> > > > > > > > >>>>>> As mentioned above, it isn't currently possible to
> > > augment an
> > > > > > > > >>> existing
> > > > > > > > >>>>>> stack at runtime with new services/components.  You
> could
> > > possibly
> > > > > > > > >>> change
> > > > > > > > >>>>>> the stack associated with a running cluster to a new
> > > stack which
> > > > > > > > >>> contains
> > > > > > > > >>>>>> the required services/components, but this new stack
> > > definition
> > > > > > > would
> > > > > > > > >>>>> need
> > > > > > > > >>>>>> to be available to ambari so it really isn't very
> > > dynamic.  We
> > > > > > > > >>> understand
> > > > > > > > >>>>>
> > > > > > > > >>>>> Let me describe this scenario as I understood this.
> Let's
> > > say I
> > > > > > > have
> > > > > > > > >>> two
> > > > > > > > >>>>> stacks:
> > > > > > > > >>>>>  - StackA (with usual set of components), currently
> > > installed on a
> > > > > > > > >>> cluster
> > > > > > > > >>>>>  - StackB == StackA + ComponentX
> > > > > > > > >>>>> So, if I add StackB definition to the Ambari server and
> > > restart it,
> > > > > > > > >>> will I
> > > > > > > > >>>>> be
> > > > > > > > >>>>> able to switch from StackA to StackB _without_
> > > resintalling the
> > > > > > > > >>> cluster,
> > > > > > > > >>>>> and
> > > > > > > > >>>>> then add/configure ComponentX's service?
> > > > > > > > >>>>>
> > > > > > > > >>>>> If my depiction is correct then it might be an
> acceptable
> > > > > > > workaround
> > > > > > > > >>> in the
> > > > > > > > >>>>> absence of dynamic extensibility.
> > > > > > > > >>>>>
> > > > > > > > >>>>>> that going forward that the stack framework will need
> to
> > > be more
> > > > > > > > >>>>> extensible
> > > > > > > > >>>>>> and dynamic as additional stack definitions are
> created.
> > > Some of
> > > > > > > the
> > > > > > > > >>>>>> underlying work to make stack processing more flexible
> > > has already
> > > > > > > > >>> been
> > > > > > > > >>>>>> done in anticipation of new requirements in this area.
> > > > > > > > >>>>>
> > > > > > > > >>>>> Shivaji Dutta, in an offline email exchange, pointed
> me to
> > > > > > > AMBARI-7175
> > > > > > > > >>> and
> > > > > > > > >>>>> AMBARI-7201, which is seemingly going into the right
> > > direction, but
> > > > > > > > >>> still
> > > > > > > > >>>>> would require a stack re-definition, if I read it
> right.
> > > > > > > > >>>>>
> > > > > > > > >>>>>> This is actually the second time that this scenario
> has
> > > came up
> > > > > > > for
> > > > > > > > >>> me
> > > > > > > > >>>>>> today so it would be nice to get a Jira filed for an
> > > enhancement
> > > > > > > > >>> where
> > > > > > > > >>>>> the
> > > > > > > > >>>>>> community can start to discuss the associated use
> cases.
> > > > > > > > >>>>>
> > > > > > > > >>>>> I will start a JIRA and put together the set of
> > > requirements.
> > > > > > > > >>>>>
> > > > > > > > >>>>> Regards,
> > > > > > > > >>>>>  Cos
> > > > > > > > >>>>>
> > > > > > > > >>>>>> -John
> > > > > > > > >>>>>>
> > > > > > > > >>>>>> On Tue, Dec 2, 2014 at 2:00 PM, Konstantin Boudnik <
> > > > > > > [email protected]>
> > > > > > > > >>>>> wrote:
> > > > > > > > >>>>>>
> > > > > > > > >>>>>>> Thanks for chiming in, Erin! Do you know if there's
> any
> > > plan to
> > > > > > > > >>> have
> > > > > > > > >>>>>>> dynamic
> > > > > > > > >>>>>>> extensibility for services? For instance, Cloudera
> > > Manager has
> > > > > > > this
> > > > > > > > >>>>>>> concept of
> > > > > > > > >>>>>>> Custom Services. And while it was done as an added
> late
> > > fix for
> > > > > > > > >>>>> parcels, it
> > > > > > > > >>>>>>> provides a way of adding new software components
> into an
> > > existing
> > > > > > > > >>>>> Hadoop
> > > > > > > > >>>>>>> cluster. Which seems to be a pretty handy concept,
> > > considering
> > > > > > > the
> > > > > > > > >>>>> liquid
> > > > > > > > >>>>>>> state of the whole Hadoop ecosystem.
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> It seems that this functionality, if desired, is
> going
> > > to be
> > > > > > > brand
> > > > > > > > >>> new
> > > > > > > > >>>>> and
> > > > > > > > >>>>>>> as
> > > > > > > > >>>>>>> such require not just development but also
> > > re-consideration at
> > > > > > > the
> > > > > > > > >>>>> design
> > > > > > > > >>>>>>> level. Am I right? Appreciate the thoughts!
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> The best part of active-active masters paradigm is
> that
> > > a client
> > > > > > > > >>> can
> > > > > > > > >>>>> work
> > > > > > > > >>>>>>> with
> > > > > > > > >>>>>>> either of them without a concern of which one is
> ahead
> > > or behind
> > > > > > > > >>> of the
> > > > > > > > >>>>>>> rest
> > > > > > > > >>>>>>> as they are equal. Essentially this solves some major
> > > issues that
> > > > > > > > >>>>> pester
> > > > > > > > >>>>>>> active-standby solutions.
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> And yes, we do install the services to the cluster's
> > > nodes as you
> > > > > > > > >>>>>>> suggested in
> > > > > > > > >>>>>>> the later part of your email - after all they are
> just
> > > Linux
> > > > > > > > >>> daemons
> > > > > > > > >>>>>>> (although
> > > > > > > > >>>>>>> Ambari tries to hide the fact for whatever reason
> that
> > > is).
> > > > > > > However
> > > > > > > > >>>>> this
> > > > > > > > >>>>>>> presents the core of the very issue: Ambari isn't
> aware
> > > about
> > > > > > > > >>> services
> > > > > > > > >>>>>>> installed outside of its realm, and it doesn't
> provide
> > > any
> > > > > > > > >>> monitoring
> > > > > > > > >>>>> or
> > > > > > > > >>>>>>> life-cycle management for those. And because of that
> I
> > > am trying
> > > > > > > to
> > > > > > > > >>>>> figure
> > > > > > > > >>>>>>> out
> > > > > > > > >>>>>>> what can be done in this regards to have this
> dynamism.
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> With regards,
> > > > > > > > >>>>>>>  Cos
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> On Tue, Dec 02, 2014 at 08:41AM, Erin Boyd wrote:
> > > > > > > > >>>>>>>> Hi Cos,
> > > > > > > > >>>>>>>> Currently, adding services dynamically is not
> supported
> > > in
> > > > > > > > >>> Ambari.
> > > > > > > > >>>>> It is
> > > > > > > > >>>>>>>> generally done, as you mentioned through the
> creation
> > > of a stack
> > > > > > > > >>>>> with the
> > > > > > > > >>>>>>>> services definition defined within in.  I also don't
> > > believe we
> > > > > > > > >>>>> currently
> > > > > > > > >>>>>>>> support multiple masters on the same cluster.  How
> > > would one
> > > > > > > > >>>>>>> deferientiate
> > > > > > > > >>>>>>>> which master it should be using in such an
> environment?
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> Of course services can be installed independent of
> > > Ambari on the
> > > > > > > > >>>>> hosts
> > > > > > > > >>>>>>>> inside the cluster...but I don't think that is what
> you
> > > are
> > > > > > > > >>> getting
> > > > > > > > >>>>> at.
> > > > > > > > >>>>>>> Are
> > > > > > > > >>>>>>>> you expecting the services to have a presence on
> the UI
> > > though
> > > > > > > > >>>>> installed
> > > > > > > > >>>>>>>> outside of Ambari?
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> Erin
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> ----- Original Message -----
> > > > > > > > >>>>>>>> From: "Konstantin Boudnik" <[email protected]>
> > > > > > > > >>>>>>>> To: [email protected]
> > > > > > > > >>>>>>>> Sent: Monday, December 1, 2014 6:42:30 PM
> > > > > > > > >>>>>>>> Subject: About extensibility of Ambari stacks (not
> > > inheritance)
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> Guys,
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> I am looking into possible stack extensibility
> > > properties of
> > > > > > > > >>> Ambari
> > > > > > > > >>>>> (not
> > > > > > > > >>>>>>> to be
> > > > > > > > >>>>>>>> confused with inheritance), but haven't been able to
> > > derive any
> > > > > > > > >>> final
> > > > > > > > >>>>>>>> conclusions just yet. Hence, I'd appreciate the
> input
> > > from the
> > > > > > > > >>> people
> > > > > > > > >>>>>>> behind
> > > > > > > > >>>>>>>> the system.
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> I have a few questions about current state of the
> Ambari
> > > > > > > (version
> > > > > > > > >>>>> 1.6.1
> > > > > > > > >>>>>>> and
> > > > > > > > >>>>>>>> coming 1.7, and possibly later?) with regards to
> > > ability to
> > > > > > > > >>> expand an
> > > > > > > > >>>>>>> existing
> > > > > > > > >>>>>>>> stack definitions with a 3rd party services and do
> it
> > > in the
> > > > > > > > >>> runtime,
> > > > > > > > >>>>>>> rather
> > > > > > > > >>>>>>>> than only during the installation. We need to be
> able
> > > to run a
> > > > > > > > >>>>> multiple
> > > > > > > > >>>>>>>> instances of our master service in the cluster,
> which
> > > isn't
> > > > > > > > >>> typical
> > > > > > > > >>>>> for
> > > > > > > > >>>>>>>> "normal" Hadoop concept where only one master can
> exist
> > > for any
> > > > > > > > >>>>> giving
> > > > > > > > >>>>>>>> service.
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> Our use case is to be able to amend an exiting
> cluster
> > > setup
> > > > > > > > >>> (HDP,
> > > > > > > > >>>>>>> Bigtop,
> > > > > > > > >>>>>>>> etc.) with a new service running on top of HDFS; but
> > > not to
> > > > > > > > >>>>> reinstall the
> > > > > > > > >>>>>>>> whole stack. The reason we have the use case is that
> > > oftentimes
> > > > > > > > >>> our
> > > > > > > > >>>>>>> software
> > > > > > > > >>>>>>>> is being added to an existing 3rd party
> environment, as
> > > an added
> > > > > > > > >>>>> bonus,
> > > > > > > > >>>>>>> not
> > > > > > > > >>>>>>>> available during the initial planning and setup of
> the
> > > cluster.
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> The way I understand Ambari's stack inheritance is
> that
> > > a scion
> > > > > > > > >>> stack
> > > > > > > > >>>>>>> will
> > > > > > > > >>>>>>>> be a brand new entity, e.g. I won't be able to
> > > cherry-pick
> > > > > > > > >>> services
> > > > > > > > >>>>> from
> > > > > > > > >>>>>>> it
> > > > > > > > >>>>>>>> and add them to the already installed parent stack's
> > > cluster,
> > > > > > > > >>> right?
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> So far from I see it doesn't seem possible without
> > > introducing a
> > > > > > > > >>>>>>> brand-new
> > > > > > > > >>>>>>>> version of a stack e.g. 'stack inheritance'. Which,
> > > > > > > > >>> unfortunately,
> > > > > > > > >>>>> won't
> > > > > > > > >>>>>>> work
> > > > > > > > >>>>>>>> as per my explanation of the use above case. I guess
> > > another way
> > > > > > > > >>> to
> > > > > > > > >>>>> look
> > > > > > > > >>>>>>> at it
> > > > > > > > >>>>>>>> is this: would it be possible to add a component
> (or a
> > > service)
> > > > > > > > >>> that
> > > > > > > > >>>>> will
> > > > > > > > >>>>>>>> override an existing component or a service, but
> > > without a need
> > > > > > > > >>> to
> > > > > > > > >>>>>>> reinstall
> > > > > > > > >>>>>>>> the rest of the stack?
> > > > > > > > >>>>>>>>
> > > > > > > > >>>>>>>> Thanks in advance for any info/ideas.
> > > > > > > > >>>>>>>>  Cos
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>
> > > > > > > > >>>>>> --
> > > > > > > > >>>>>> CONFIDENTIALITY NOTICE
> > > > > > > > >>>>>> NOTICE: This message is intended for the use of the
> > > individual or
> > > > > > > > >>> entity
> > > > > > > > >>>>> to
> > > > > > > > >>>>>> which it is addressed and may contain information
> that is
> > > > > > > > >>> confidential,
> > > > > > > > >>>>>> privileged and exempt from disclosure under applicable
> > > law. If the
> > > > > > > > >>> reader
> > > > > > > > >>>>>> of this message is not the intended recipient, you are
> > > hereby
> > > > > > > > >>> notified
> > > > > > > > >>>>> that
> > > > > > > > >>>>>> any printing, copying, dissemination, distribution,
> > > disclosure or
> > > > > > > > >>>>>> forwarding of this communication is strictly
> prohibited.
> > > If you
> > > > > > > have
> > > > > > > > >>>>>> received this communication in error, please contact
> the
> > > sender
> > > > > > > > >>>>> immediately
> > > > > > > > >>>>>> and delete it from your system. Thank You.
> > > > > > > > >>>>>
> > > > > > > > >>>>>
> > > > > > > > >>>>
> > > > > > > > >>>> --
> > > > > > > > >>>> CONFIDENTIALITY NOTICE
> > > > > > > > >>>> NOTICE: This message is intended for the use of the
> > > individual or
> > > > > > > entity
> > > > > > > > >>> to
> > > > > > > > >>>> which it is addressed and may contain information that
> is
> > > > > > > confidential,
> > > > > > > > >>>> privileged and exempt from disclosure under applicable
> law.
> > > If the
> > > > > > > reader
> > > > > > > > >>>> of this message is not the intended recipient, you are
> > > hereby
> > > > > > > notified
> > > > > > > > >>> that
> > > > > > > > >>>> any printing, copying, dissemination, distribution,
> > > disclosure or
> > > > > > > > >>>> forwarding of this communication is strictly
> prohibited. If
> > > you have
> > > > > > > > >>>> received this communication in error, please contact the
> > > sender
> > > > > > > > >>> immediately
> > > > > > > > >>>> and delete it from your system. Thank You.
> > > > > > > > >>>
> > > > > > > > >>
> > > > > > > > >> --
> > > > > > > > >> CONFIDENTIALITY NOTICE
> > > > > > > > >> NOTICE: This message is intended for the use of the
> > > individual or
> > > > > > > entity to
> > > > > > > > >> which it is addressed and may contain information that is
> > > > > > > confidential,
> > > > > > > > >> privileged and exempt from disclosure under applicable
> law.
> > > If the
> > > > > > > reader
> > > > > > > > >> of this message is not the intended recipient, you are
> hereby
> > > > > > > notified that
> > > > > > > > >> any printing, copying, dissemination, distribution,
> > > disclosure or
> > > > > > > > >> forwarding of this communication is strictly prohibited.
> If
> > > you have
> > > > > > > > >> received this communication in error, please contact the
> > > sender
> > > > > > > immediately
> > > > > > > > >> and delete it from your system. Thank You.
> > > > > > > >
> > > > > > > >
> > > > > > > > --
> > > > > > > > CONFIDENTIALITY NOTICE
> > > > > > > > NOTICE: This message is intended for the use of the
> individual
> > > or entity
> > > > > > > to
> > > > > > > > which it is addressed and may contain information that is
> > > confidential,
> > > > > > > > privileged and exempt from disclosure under applicable law.
> If
> > > the reader
> > > > > > > > of this message is not the intended recipient, you are hereby
> > > notified
> > > > > > > that
> > > > > > > > any printing, copying, dissemination, distribution,
> disclosure or
> > > > > > > > forwarding of this communication is strictly prohibited. If
> you
> > > have
> > > > > > > > received this communication in error, please contact the
> sender
> > > > > > > immediately
> > > > > > > > and delete it from your system. Thank You.
> > > > > > >
> > > > > >
> > > > > > --
> > > > > > CONFIDENTIALITY NOTICE
> > > > > > NOTICE: This message is intended for the use of the individual or
> > > entity to
> > > > > > which it is addressed and may contain information that is
> > > confidential,
> > > > > > privileged and exempt from disclosure under applicable law. If
> the
> > > reader
> > > > > > of this message is not the intended recipient, you are hereby
> > > notified that
> > > > > > any printing, copying, dissemination, distribution, disclosure or
> > > > > > forwarding of this communication is strictly prohibited. If you
> have
> > > > > > received this communication in error, please contact the sender
> > > immediately
> > > > > > and delete it from your system. Thank You.
> > > >
> > > >
> > >
> >
> > --
> > CONFIDENTIALITY NOTICE
> > NOTICE: This message is intended for the use of the individual or entity
> to
> > which it is addressed and may contain information that is confidential,
> > privileged and exempt from disclosure under applicable law. If the reader
> > of this message is not the intended recipient, you are hereby notified
> that
> > any printing, copying, dissemination, distribution, disclosure or
> > forwarding of this communication is strictly prohibited. If you have
> > received this communication in error, please contact the sender
> immediately
> > and delete it from your system. Thank You.
>

-- 
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to 
which it is addressed and may contain information that is confidential, 
privileged and exempt from disclosure under applicable law. If the reader 
of this message is not the intended recipient, you are hereby notified that 
any printing, copying, dissemination, distribution, disclosure or 
forwarding of this communication is strictly prohibited. If you have 
received this communication in error, please contact the sender immediately 
and delete it from your system. Thank You.

Reply via email to