I'm Trying to setup a multi core solr server for our webapplication but i'm having trouble creating new core through the coreadmin service.
I'm using Solr-4.4 because 4.3 ran into problems persisting the cores in solr.xml (datadir wasn't preserved) So i'm using the new Solr.xml configuration 4.4 and beyond
My solr.xml currently looks like:
<solr>
<str name="coreRootDirectory">default-instance/cores/</str>
</solr>
solrconfig.xml is located at (solrhome)/default-instance/conf/solrconfig.xml
When trying to create a core with the url
http:/example.org/solr/admin/cores?action=CREATE&name=test-name&schema=schema-test.xml&loadOnStartup=false
gives me the error:
Error CREATEing SolrCore 'test-name': Unable to create core: test-name
Caused by: Can't find resource 'solrconfig.xml' in classpath or
'default-instance/cores/test-name/conf/', cwd=/var/lib/tomcat7
The following seems to work:
http:/example.org/solr/admin/cores?action=CREATE&name=test-name&schema=schema-test.xml&loadOnStartup=false&config=/absolute/file/path/to/solrconfig.xml
The problem is this only seems to work with a absolute path (or possibly a relative path from /var/lib/tomcat7) which is not a workable solution.
What i'm looking for is a way to place solrconfig.xml so it can be used to create new cores with that config (or a way the create those cores with the current location).
More or less the same will be needed for schemas
This worked. Ran on command line and was viewable in admin console:
solr create -c (name for core or collection)
See README.txt for more info.
In my case I took advantage of the Core Discovery feature in 4.4+, rather than creating the core using the management web interface.
This simply involved copying the example collection1 folder from the examples directory (which I usually use as a starting point).
Then I had to make sure that there is core.properties in the root of my new core with name=<new core name> inside. Solr automatically detected the new core and allowed me to use it without any fuss.
This avoided the trouble of having to copying solrconfig.xml and schema.xml into any special location.
I had the same problem: solrconfig.xml was not in the classpath. I solved it by copying my configuration file templates into the classpath.
So I took a look at http://localhost:8983/solr/#/~java-properties to see solrs classpath definition and then i copied the template solrconfig.xml and schema.xml into the folder C:\servers\solr-4.4.0\example\resources. Furthermore i copied all the stopwords stuff there...
This solution is not a fully satisfying, but it works. Adding another path to the classpath should work, too. I'm slightly astonished that no default configuration for new cores can be declared within solr.xml
I recommend the new Config Sets for this use case.
If you place your schema.xml and solrconfig.xml (and other config files like stopwords etc.) in a directory $SOLR_HOME/configsets/myConfig/conf, you can create a new core with this config by calling:
http://solr/admin/cores?action=CREATE&name=mycore&instanceDir=my_instance&configSet=myConfig
See https://cwiki.apache.org/confluence/display/solr/Config+Sets
But they are not available until Solr 4.8, see https://issues.apache.org/jira/browse/SOLR-4478
Related
I have Solr cloud configuration which we run on 4 servers. We use tomcat as web server for solr. I have 5 zookeepers to maintain the data-replication. I have added a jar file with custom update processor. This is in shared folder which is mention in solr.xml
<solr persistent="true" sharedLib="/solr/lib">
While creating the first version of this jar file I gave the name updateProcessor.0.1.jar as the file name. Even though it was shared, jar files were added in all the 4 servers.
But now I have to update the updateProcessor. For this I created updateProcessor0.2.jar. I deleted the updateProcessor.0.1.jar from each sever and added a new one. But changes were not seen ?
Any ideas what I am doing wrong? Should this is be checked using zkcli ?
Well I found a roundabout which may help someone in future maybe.
I changed entry in solrconfig from
<processor class="org.apache.solr.update.processor.MyUpdateProcessorFactory">
to
<processor class="org.apache.solr.update.processor.MyUpdateProcessorFactory2">
I renamed the class file I created in solr config from MyUpdateProcessorFactory to MyUpdateProcessorFactory2
I have deployed a stand alone instance of Solr 5.2.1 on JBoss 7 using these very simple instructions from the Solr wiki:
http://wiki.apache.org/solr/SolrInstall and
http://wiki.apache.org/solr/SolrJBoss
I have set my solr.solr.home (which points to the folder copied directly from example/example-DIH) this folder has 5 sub folders (db,mail,rss,solr and tika) I have made no modifications to any of them, each has conf and some have lib folders, which I assume is what Solr is looking for....
solr.data.dir I have not set in my environment variable as I don't know where it should point to? I had planed to point it to a coreName/data once I have everything running, but that means I can only have 1 core?
Solr does start and I can see the console, however I get the following Initialization Failures:
tika: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error loading class 'solr.DataImportHandler'
db: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error loading class 'solr.DataImportHandler'
mail: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error loading class 'solr.DataImportHandler'
rss:
org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error loading class 'solr.DataImportHandler'
solr: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error loading class 'solr.DataImportHandler'
Clearly Solr is looking for these libraries, I just don't know where they are or how to tell Solr to look in the 5 folders described above, I had hoped the war file would have all the necessary libs it needed.
Unfortunately I am not sure what needs to be configured / added next and the wiki seems to lead one to a point and then just stop short of explaining additional configuration steps.
Can somebody point me in the correct direction to go from here?
Also is it possible to secure the admin console (Jboss7 - Solr5.2.1)
Thanks
Marc
Mostly including following in solrconfig.xml should resolve the issue
I downloaded a Solr package from here: http://lucene.apache.org/solr/mirrors-solr-latest-redir.html
I want to create a new field in schema.xml file, but I don't know in which one - in downloaded folder there are 7 schema.xml files.
I edited all of this files, but nothing changed.
Where should I add a new field definition?
If you have standard distribution (http://lucene.apache.org/solr/mirrors-solr-latest-redir.html) you can find your cores at solr-5.2.1/server/solr
One problem you might face is that you don't have any cores defined yet. If that is a case copy solr-5.2.1\server\solr\configsets\basic_configs to solr-5.2.1\server\solr\my_new_core (rename folder) - congratz, you defined a new core.
Now run the server: run in command line solr-5.2.1\bin\solr with parameter start. Open in your browser: http://localhost:8983/solr/#/~cores/example_core and Add core with instanceDir = my_new_core. This initializes your core - makes it fully functional.
Now you can find solr-5.2.1\server\solr\example_core\conf\solrconfig.xml
and configure it as you will. After changing solrconfig.xml remember to reload core at Core Admin.
Create a solr instance by running a command from the command prompt
solr create -c test
Here test is the collection name.Copy schema.xml and solrconfig.xml from techproducts project folder to conf folder of the test project.Now you can define your schema in the schema.xml.
I have a standalone Solr instance with 4 different cores working fine using the embedded Jetty server. I configured the cores for v4.10.3 but since I moved to v5.1 and all seems to work fine without any changes.
Before going into production, I need to set it up as a Solrcloud installation, initially with 2 nodes (two different machines) with 1 shard per node (to keep it simple). I have been trying to get it to work but I have not been able to do it.
I tried to run it like this (I think using start.jar is not the preferred way), having read that Solr will look for multiple configured cores in any nested folders (which works for standalone Solr):
java -DzkRun -DnumShards=2 -Dbootstrap_confdir=solr/ -jar start.jar
but that did not work, it does not find the needed solrconfig.xml file.
My Solr directory looks like this:
My solr.xml file is the standard one:
<solr>
<solrcloud>
<str name="host">${host:}</str>
<int name="hostPort">${jetty.port:8983}</int>
<str name="hostContext">${hostContext:solr}</str>
<int name="zkClientTimeout">${zkClientTimeout:30000}</int>
<bool name="genericCoreNodeNames">${genericCoreNodeNames:true}</bool>
</solrcloud>
<shardHandlerFactory name="shardHandlerFactory"
class="HttpShardHandlerFactory">
<int name="socketTimeout">${socketTimeout:0}</int>
<int name="connTimeout">${connTimeout:0}</int>
</shardHandlerFactory>
</solr>
Each core looks like this:
And the core.properties just has the name of the core:
name=users
My question is:
How do I start Solrcloud v5.1 so the 4 cores are picked up?
In SolrCloud each of your Core will become a Collection.
Each Collection will have its own set of Config Files and data.
You might find this helpful Moving multi-core SOLR instance to cloud
Solr 5.0 (onwards) has made some changes on how to create a SolrCloud setup with shards, and how to add collections etc.
Everything listed below is my understanding of the Solr Reference Guide. I will highly recommend going through it thoroughly.
https://cwiki.apache.org/confluence/display/solr/Apache+Solr+Reference+Guide
I setup my servers on a Linux(CentOS) server, but the steps can be used to setup solr on Windows system also. For example, there is solr.cmd file instead of solr.sh
Here are the steps I followed to create a simple two shard SolrCloud setup.
Setup the zookeeper ensemble. I am assuming you are trying to use the
embedded ZK in solr. For a production system, it is highly
recommended to create a external ZK ensemble. You can find steps to install a external ensemble in this section of reference guid
Download solr to /opt folder.
Extract the install file ONLY.
tar xzf solr-5.0.0.tgz solr-5.0.0/bin/install_solr_service.sh --strip components=2
This command will install solr on your system
sudo bash ./install_solr_service.sh solr-5.0.0.tgz
The above command will create a new user called "solr" if it does not exist.
These are some of the default options it will assume. You can view this in /var/solr/solr.in.sh . This is the include file where you can specify other options.
* SOLR_PID_DIR=/var/solr
* SOLR_HOME=/var/solr/data
* LOG4J_PROPS=/var/solr/log4j.properties
* SOLR_LOGS_DIR=/var/solr/logs
* SOLR_PORT=8983
Running install_solr_service start in the above step will start a solr server. Stop the server using service solr stop before doing any of the changes below.
Change Java heap value
SOLR_HEAP="3g"
This will set Xmx and Xms as 3GB . (optional)
This variable is not mentioned in the solr.in.sh file in Solr 5.1 . Its a bug and has been fixed, will be released in next version.
SOLR_MODE="solrcloud" Required
this is what you need start solr in cloud mode.
ZK_HOST=ZK1:2181,ZK2:2181,ZK3:2181 Required
(replace zk with you zookeeper host names)
Running the install_solr_service.sh command also creates a init.d file as /etc/init.d/solr
This init.d script in turn calls the /opt/solr/bin/solr script and includes all the variables from /var/solr/solr.in.sh
Once you have made the above changes, start solr again using service solr start
You can check the status using service solr status
Creating Collections Shards and Replicas
- All shard, collection, replica related commands are now made using Collections API.
Before creating a collection a config folder should be uploaded to ZK .
This can be done using the zkcli.sh script in the solr folder (not on the zookeeper servers)
Folder: /opt/solr/server/scripts/cloud-scripts
The command to upload the confg folder is
sh zkcli.sh -cmd upconfig -zkhost zk1:2181,zk2:2181,zk3:2181 -confname yourconfigname -confdir /var/solr/configs/conf
You will run this command 4 times for each of your 4 cores, each time changing the path of the conf folder and config name.
This will upload all the config files in conf folder with the name 'yourconfigname' in zookeeper.
Creating a collection
I used the following command to create a new collection.
http://1.1.1.1:8983/solr/admin/collections?action=CREATE&name=yourcollectionname&numShards=2&replicationFactor=1&maxShardsPerNode=1&createNodeSet=1.1.1.1:8983_solr,2.2.2.2:8983_solr&collection.configName=yourconfigname
Happy Searching!
SolrCloud does not use configuration files stored in core conf directory. To make your cores visible in SolrCloud structure you need to upload the configuration files to ZooKeeper and keep it manage the files to you. All the time a Solr instance comes up it get the configuration files stored in ZooKeeper. This way your cores doesn't need to have conf directory to work. To upload your core configuration files to ZooKeeper follow the link bellow and take a look at Upload a configuration directory
https://cwiki.apache.org/confluence/display/solr/Command+Line+Utilities
I'm using Tika parser to index my files into Solr. I created my own parser (which extends XMLParser). It uses my own mimetype.
I created a jar file which inside looks like this:
src
|-main
|-some_packages
|-MyParser.java
|resources
|-META-INF
|-services
|-org.apache.tika.parser.Parser (which contains a line:some_packages.MyParser.java)
|_org
|-apache
|-tika
|-mime
|-custom-mimetypes.xml
In custom-mimetypes I put the definition of new mimetype becouse my xml files have some special tags.
Now where is the problem: I've been testing parsing and indexing with Solr on glassfish installed on my local machine. It worked just fine. Then I wanted to install it on some remote server. There is the same version of glassfish installed (3.1.1). I copied-pasted Solr application, it's home directory with all libraries (including tika jars and the jar with my custom parser). Unfortunately it doesn't work. After posting files to Solr I can see in content-type field that it detected my custom mime type. But there are no fields that suppose to be there like if MyParser class was never runned. The only fields I get are the ones from Dublin Core. I checked (by simply adding some printlines) that Tika is only using XMLParser.
Have anyone had similar problem? How to handle this?
Problem was that I was using Java 7 to compile my parser but Apache Tika was compiled with Java 5...