Re: OpenNMS update version 21.0.5 to version 22.0.2

I'm inclined to agree, Chris.. My experience with OpenNMS is that there 
is a tangled mess of defaults, customisations and code in the vast 
number of XML config files which makes upgrading a very haphazard task. 
There's a long-standing support ticket to restructure the config and 
make upgrading easier but progress is slow and will likely require a 
massive overhaul of the configuration files to achieve it.

In our environment I've used Puppet to create all my OpenNMS config 
(although I've since seen a tutorial using Rake which looks like a 
really nice approach). We never 'upgrade' but instead we trash the 
running version, rebuild, auto-reconfigure and rediscover everything. 
This isn't a particularly scalable approach so it would depend on the 
size of your estate, plus we don't need to retain historic data so we 
have the luxury of wiping it and starting afresh. However, it could be 
tailored to retain provisioned nodes and data, making it far more scalable.

If you're able to trust the 'A' records to be an authoritative starting 
point as to all the hosts that need to be monitored, then the DNS 
Provisioner from OpenNMS is great. From scratch, OpenNMS takes a zone 
copy, provisions all nodes and performs service detection. It takes 
about an hour from start to finish to have our network of ~300 nodes 
fully discovered.

It's on my todo list to see if I can share my Puppet code, although it 
may not be generic enough for other environments.

HTH

Jonathan


On 20/07/18 17:03, Chris Burt wrote:
>
> I do not and this mailing list was no help at all.  I wiped out the 
> install and started over.  Which seems par for the course with 
> OpenNMS.   The need a real community.
>
>
> On 7/20/2018 8:52 AM, fmposta--- via opennms-discuss wrote:
>>
>> Hi All,
>>
>> I have several installations of OpenNMS on CentOS6/7 and I have 
>> updated to the latest release.
>>
>> The update was successful without problems and both the db and 
>> OpenNMS services were started regularly, but when I try the 
>> webpage nothing appears; obviously I tried another update with the 
>> same result.
>>
>> Did you have similar problems? You can help me?
>>
>> Thank you
>>
>> Fulvio
>>
>>
>>
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>
> -- 
> Chris Burt
> Generic Network Systems
> 503-342-4044 x728
>
>
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