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https://issues.apache.org/jira/browse/SOLR-4470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14264463#comment-14264463
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Per Steffensen commented on SOLR-4470:
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There is a variant of 2nd suggestion, that I just want to mention briefly (I am
not at being brief) - something that we do of other reasons. You might want to
divide your set of Solr-nodes into two sub-sets
* Search-Solrs: Receiving incoming search requests from outside clients. Not
containing any data themselves but orchestrating the distributed searches
against the Data-Solrs
* Data-Solrs: Not directly accessible (network-wise) to outside clients
Setting up web-container security on Search-Solrs only might work, because they
do not have to communicate with each other. And it might be enough for you if
Data-Solrs are not accessible from outside.
We have such a setup but not for security reasons - we have web-container
security on both Search-Solrs and Data-Solrs. Just wanted to mention it because
it also might make things easier for you, and since I know it is possible this
is also an option for you. We do the separation because of different hardware
requirements for the two kinds of Solr-nodes. Search-Solrs need more memory but
almost no disk-space, Data-Solrs need more disk-space but less memory - in our
setup, with the amounts and distribution of data we have and for the searches
we perform against the Sor-cluster.
Technically what we do is that we make a "search-collection" containing no
data. "search-collection" only has shards on the Search-Solrs. Then we have
several "data-collections" (containing the data) only having shards on the
Data-Solrs. We have custom (not much code) SearchHandler/SearchComponents (Solr
concepts) that basically just calculates the "data-collection" you have to
search and forwards the search from outside clients to "search-collection" to
those "data-collections". We have an advanced algorithm for calculating the
"data-collections" that has to be searches given the concrete search to
"search-collection", but you can just always calculate "all data-collections".
This way Search-Solrs handle the distributed search, while Data-Solrs handle
searches against local shard only. This is kinda the same as putting your own
custom gateway in front of your Solr-nodes, and make the Solrs-nodes
inaccessible directly from outside clients. We just use Solr itself as this
front gateway, taking advantage of all the nice features - high availability
(with more than one Search-Solr) etc.
Clients uses CloudSolrServer, but always make searches against the
"search-collection".
> Support for basic http auth in internal solr requests
> -----------------------------------------------------
>
> Key: SOLR-4470
> URL: https://issues.apache.org/jira/browse/SOLR-4470
> Project: Solr
> Issue Type: New Feature
> Components: clients - java, multicore, replication (java), SolrCloud
> Affects Versions: 4.0
> Reporter: Per Steffensen
> Assignee: Jan Høydahl
> Labels: authentication, https, solrclient, solrcloud, ssl
> Fix For: Trunk
>
> Attachments: SOLR-4470.patch, SOLR-4470.patch, SOLR-4470.patch,
> SOLR-4470.patch, SOLR-4470.patch, SOLR-4470.patch, SOLR-4470.patch,
> SOLR-4470.patch, SOLR-4470.patch, SOLR-4470.patch, SOLR-4470.patch,
> SOLR-4470.patch, SOLR-4470_branch_4x_r1452629.patch,
> SOLR-4470_branch_4x_r1452629.patch, SOLR-4470_branch_4x_r1454444.patch,
> SOLR-4470_trunk_r1568857.patch
>
>
> We want to protect any HTTP-resource (url). We want to require credentials no
> matter what kind of HTTP-request you make to a Solr-node.
> It can faily easy be acheived as described on
> http://wiki.apache.org/solr/SolrSecurity. This problem is that Solr-nodes
> also make "internal" request to other Solr-nodes, and for it to work
> credentials need to be provided here also.
> Ideally we would like to "forward" credentials from a particular request to
> all the "internal" sub-requests it triggers. E.g. for search and update
> request.
> But there are also "internal" requests
> * that only indirectly/asynchronously triggered from "outside" requests (e.g.
> shard creation/deletion/etc based on calls to the "Collection API")
> * that do not in any way have relation to an "outside" "super"-request (e.g.
> replica synching stuff)
> We would like to aim at a solution where "original" credentials are
> "forwarded" when a request directly/synchronously trigger a subrequest, and
> fallback to a configured "internal credentials" for the
> asynchronous/non-rooted requests.
> In our solution we would aim at only supporting basic http auth, but we would
> like to make a "framework" around it, so that not to much refactoring is
> needed if you later want to make support for other kinds of auth (e.g. digest)
> We will work at a solution but create this JIRA issue early in order to get
> input/comments from the community as early as possible.
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