Solr on CDH4 using Cloudera Manager

Install Cloudera Manager from an AWS instance

You can launch an AWS instance at CentOS 6.3 and ssh to the instance. Then, download the Cloudera Manager 4.5 installer and execute it on the remote instance:

$ wget http://archive.cloudera.com/cm4/installer/latest/cloudera-manager-installer.bin
$ chmod +x cloudera-manager-installer.bin
$ sudo ./cloudera-manager-installer.bin

(1) Follow the command based installation accepting licenses.

(2) Open and go to Cloudera Manager's Web UI, which might be local URLbut you may use the global URL, to launch the services.

(3) All Services > Add Cluster > Continue on Coudera Manager Express Wizard > CentOS 6.3; m1.xlarge; ...

Note: >= m1.large recommended

Stop unneccessay services

Stop HBase, Hive, Oozie, Sqoop

All systems are located at 'usr/lib/'

For example, /usr/lib/solr, /usr/lib/zookeeper, ...

Optional: Activate Solr service

After launching Cloudera Manager and its instances as shown at whirr_cm above, go to 'Host' > 'Parcels' tab of the Cloudera Manager's Web UI. Then, you can download the latest available CDH, Solr, Impala.

Download "SOLR 0.9.1-1.cdh4.3.0.p0.275" > Distribute > Activate > Restart the current Cluster

Optional: download CDH 4.3.0-1

Download "CDH 4.3.0-1.cdh4.3.0.p0.22" > Distribute > Activate > Restart the current Cluster

Note: Restarting the cluster will take several minutes

Add Solr service

Actions (of Cluster 1 - CDH4) > Add a Service > Solr > Zookeeper as a dependency

Open a Web UI of Hue

Default login/pwd is admin You can see Solr. Select it

Update Solr conf at a zookeeper node

You can see a solr configuration file as '/etc/default/solr' and update it with as follows:

sudo vi /etc/default/solr 

Note: it may not recognize 'localhost' so that use '127.0.0.1' alternatively

Create the /solr directory in HDFS:

$ sudo -u hdfs hadoop fs -mkdir /solr
$ sudo -u hdfs hadoop fs -chown solr /solr

Create a collection

You change to root account and need to add solr to zookeeper. From now on, I run shell commands as root user.

$ sudo su
$ solrctl init

or

$ solrctl init --force

Then, at Cloudera Manager's Web UI, restart solr service.

Run the following commands to create a collection at a zookeeper node

$ solrctl instancedir --generate $HOME/solr_configs
$ solrctl instancedir --create collection $HOME/solr_configs
$ solrctl collection --create collection -s 1

While running 'solrctl collection ...', you may go to /var/log/solr and check out if the solr runs well without any error:

$ tail -f solr-cmf-solr1-SOLR_SERVER-ip-10-138-xx-xx.ec2.internal.log.out 

Upload an example data to solr

$ cd /usr/share/doc/solr-doc-4.3.0+52/example/exampledocs/
$ java -Durl=http://127.0.0.1:8983/solr/collection/update -jar post.jar *.xml
SimplePostTool version 1.5
Posting files to base url http://127.0.0.1:8983/solr/collection/update using content-type application/xml..
POSTing file gb18030-example.xml
POSTing file hd.xml
POSTing file ipod_other.xml
...
POSTing file utf8-example.xml
POSTing file vidcard.xml
14 files indexed.
COMMITting Solr index changes to http://127.0.0.1:8983/solr/collection/update..
Time spent: 0:00:00.818

Query using Hue Web UI

Open Hue Web UI at Cloudera Manager's Hue service and select solr tab.

1. Make sure to import collections - core may not be needed.

2. select "Search page" link at the top right of the solr web UI page.

3. As default, the page shows 1-15 of 32 results.

4. Type in 'photo' at a search box ans will show 1 -2 of 2 results.

Customize the view of Solr Web UI

Select 'Customize this collection' that will present Visual Editor for view.

Note: you can see the same content from https://github.com/hipic/cdh-solr

References

[1]. http://github.com/hipic/whirr_cm

[2]. http://blog.cloudera.com/blog/2013/03/how-to-create-a-cdh-cluster-on-amazon-ec2-via-cloudera-manager/

[3]. Managing Clusters with Cloudera Manager,http://www.cloudera.com/content/cloudera-content/cloudera-docs/CM4Ent/latest/PDF/Managing-Clusters-with-Cloudera-Manager.pdf

[4]. Cloudera Search Installation Guide,http://www.cloudera.com/content/cloudera-content/cloudera-docs/Search/latest/Cloudera-Search-Installation-Guide

[5]. Cloudera Search User Guide, http://www.cloudera.com/content/cloudera-content/cloudera-docs/Search/latest/Cloudera-Search-User-Guide

[6]. Cloudera Search Installation Guide,http://www.cloudera.com/content/cloudera-content/cloudera-docs/Search/latest/PDF/Cloudera-Search-Installation-Guide.pdf