` defined in each web application's context XML
+ - unset the `db.url`, `db.username`, and `db.password` parameters in dspace.cfg
+ - set the `db.jndi` in dspace.cfg to the name specified in the web application context
+
diff --git a/public/2017-12/index.html b/public/2017-12/index.html
index b319daa4d..aac70bf7e 100644
--- a/public/2017-12/index.html
+++ b/public/2017-12/index.html
@@ -23,7 +23,7 @@ The list of connections to XMLUI and REST API for today:
-
+
@@ -56,9 +56,9 @@ The list of connections to XMLUI and REST API for today:
"@type": "BlogPosting",
"headline": "December, 2017",
"url": "https://alanorth.github.io/cgspace-notes/2017-12/",
- "wordCount": "2421",
+ "wordCount": "2915",
"datePublished": "2017-12-01T13:53:54+03:00",
- "dateModified": "2017-12-19T10:14:51+02:00",
+ "dateModified": "2017-12-19T10:38:57+02:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@@ -585,6 +585,129 @@ $ schedtool -D -e ionice -c2 -n7 nice -n19 dspace index-discovery
- I don’t have time now to look into this but the Solr sharding has long been an issue!
+- Looking into using JDBC / JNDI to provide a database pool to DSpace
+- The DSpace 6.x configuration docs have more notes about setting up the database pool than the 5.x ones (which actually have none!)
+- First, I uncomment
db.jndi in dspace/config/dspace.cfg
+- Then I create a global
Resource in the main Tomcat server.xml (inside GlobalNamingResources):
+
+
+ <Resource name="jdbc/dspace" auth="Container" type="javax.sql.DataSource"
+ driverClassName="org.postgresql.Driver"
+ url="jdbc:postgresql://localhost:5432/dspace"
+ username="dspace"
+ password="dspace"
+ initialSize='5'
+ maxActive='50'
+ maxIdle='15'
+ minIdle='5'
+ maxWait='5000'
+ validationQuery='SELECT 1'
+ testOnBorrow='true' />
+
+
+
+
+<ResourceLink global="jdbc/dspace" name="jdbc/dspace" type="javax.sql.DataSource"/>
+
+
+
+- I am not sure why several guides show configuration snippets for server.xml and web application contexts that use a Local and Global jdbc…
+- When DSpace can’t find the JNDI context (for whatever reason) you will see this in the dspace logs:
+
+
+2017-12-19 13:12:08,796 ERROR org.dspace.storage.rdbms.DatabaseManager @ Error retrieving JNDI context: jdbc/dspace
+javax.naming.NameNotFoundException: Name [jdbc/dspace] is not bound in this Context. Unable to find [jdbc].
+ at org.apache.naming.NamingContext.lookup(NamingContext.java:825)
+ at org.apache.naming.NamingContext.lookup(NamingContext.java:173)
+ at org.dspace.storage.rdbms.DatabaseManager.initDataSource(DatabaseManager.java:1414)
+ at org.dspace.storage.rdbms.DatabaseManager.initialize(DatabaseManager.java:1331)
+ at org.dspace.storage.rdbms.DatabaseManager.getDataSource(DatabaseManager.java:648)
+ at org.dspace.storage.rdbms.DatabaseManager.getConnection(DatabaseManager.java:627)
+ at org.dspace.core.Context.init(Context.java:121)
+ at org.dspace.core.Context.<init>(Context.java:95)
+ at org.dspace.app.util.AbstractDSpaceWebapp.register(AbstractDSpaceWebapp.java:79)
+ at org.dspace.app.util.DSpaceContextListener.contextInitialized(DSpaceContextListener.java:128)
+ at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5110)
+ at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5633)
+ at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
+ at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1015)
+ at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:991)
+ at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
+ at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:712)
+ at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:2002)
+ at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
+ at java.util.concurrent.FutureTask.run(FutureTask.java:266)
+ at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
+ at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
+ at java.lang.Thread.run(Thread.java:748)
+2017-12-19 13:12:08,798 INFO org.dspace.storage.rdbms.DatabaseManager @ Unable to locate JNDI dataSource: jdbc/dspace
+2017-12-19 13:12:08,798 INFO org.dspace.storage.rdbms.DatabaseManager @ Falling back to creating own Database pool
+
+
+
+- And indeed the Catalina logs show that it failed to set up the JDBC driver:
+
+
+org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.postgresql.Driver'
+
+
+
+- There are several copies of the PostgreSQL driver installed by DSpace:
+
+
+$ find ~/dspace/ -iname "postgresql*jdbc*.jar"
+/Users/aorth/dspace/webapps/jspui/WEB-INF/lib/postgresql-9.1-901-1.jdbc4.jar
+/Users/aorth/dspace/webapps/oai/WEB-INF/lib/postgresql-9.1-901-1.jdbc4.jar
+/Users/aorth/dspace/webapps/xmlui/WEB-INF/lib/postgresql-9.1-901-1.jdbc4.jar
+/Users/aorth/dspace/webapps/rest/WEB-INF/lib/postgresql-9.1-901-1.jdbc4.jar
+/Users/aorth/dspace/lib/postgresql-9.1-901-1.jdbc4.jar
+
+
+
+- These apparently come from the main DSpace
pom.xml:
+
+
+<dependency>
+ <groupId>postgresql</groupId>
+ <artifactId>postgresql</artifactId>
+ <version>9.1-901-1.jdbc4</version>
+</dependency>
+
+
+
+- So WTF? Let’s try copying one to Tomcat’s lib folder and restarting Tomcat:
+
+
+$ cp ~/dspace/lib/postgresql-9.1-901-1.jdbc4.jar /usr/local/opt/tomcat@7/libexec/lib
+
+
+
+- Oh that’s fantastic, now at least Tomcat doesn’t print an error during startup so I guess it succeeds to create the JNDI pool
+- DSpace starts up but I have no idea if it’s using the JNDI configuration because I see this in the logs:
+
+
+2017-12-19 13:26:54,271 INFO org.dspace.storage.rdbms.DatabaseManager @ DBMS is '{}'PostgreSQL
+2017-12-19 13:26:54,277 INFO org.dspace.storage.rdbms.DatabaseManager @ DBMS driver version is '{}'9.5.10
+2017-12-19 13:26:54,293 INFO org.dspace.storage.rdbms.DatabaseUtils @ Loading Flyway DB migrations from: filesystem:/Users/aorth/dspace/etc/postgres, classpath:org.dspace.storage.rdbms.sqlmigration.postgres, classpath:org.dspace.storage.rdbms.migration
+2017-12-19 13:26:54,306 INFO org.flywaydb.core.internal.dbsupport.DbSupportFactory @ Database: jdbc:postgresql://localhost:5432/dspacetest (PostgreSQL 9.5)
+
+
+
+- Let’s try again, but this time explicitly blank the PostgreSQL connection parameters in dspace.cfg and see if DSpace starts…
+- Wow, ok, that works, but having to copy the PostgreSQL JDBC JAR to Tomcat’s lib folder totally blows
+- Also, it’s likely this is only a problem on my local macOS + Tomcat test environment
+- Ubuntu’s Tomcat distribution will probably handle this differently
+- So for reference I have:
+
+
+- a
<Resource> defined globally in server.xml
+- a
<ResourceLink> defined in each web application’s context XML
+- unset the
db.url, db.username, and db.password parameters in dspace.cfg
+- set the
db.jndi in dspace.cfg to the name specified in the web application context
+
diff --git a/public/2017/12/postgres-connections-month-cgspace-2.png b/public/2017/12/postgres-connections-month-cgspace-2.png
new file mode 100644
index 000000000..11731d504
Binary files /dev/null and b/public/2017/12/postgres-connections-month-cgspace-2.png differ
diff --git a/public/robots.txt b/public/robots.txt
index d2ae9994d..7c86be3fe 100644
--- a/public/robots.txt
+++ b/public/robots.txt
@@ -30,7 +30,7 @@ Disallow: /cgspace-notes/2015-12/
Disallow: /cgspace-notes/2015-11/
Disallow: /cgspace-notes/
Disallow: /cgspace-notes/categories/
-Disallow: /cgspace-notes/tags/notes/
Disallow: /cgspace-notes/categories/notes/
+Disallow: /cgspace-notes/tags/notes/
Disallow: /cgspace-notes/post/
Disallow: /cgspace-notes/tags/
diff --git a/public/sitemap.xml b/public/sitemap.xml
index 9500729d1..163c01278 100644
--- a/public/sitemap.xml
+++ b/public/sitemap.xml
@@ -4,7 +4,7 @@
https://alanorth.github.io/cgspace-notes/2017-12/
- 2017-12-19T10:14:51+02:00
+ 2017-12-19T10:38:57+02:00
@@ -139,7 +139,7 @@
https://alanorth.github.io/cgspace-notes/
- 2017-12-19T10:14:51+02:00
+ 2017-12-19T10:38:57+02:00
0
@@ -148,27 +148,27 @@
0
-
- https://alanorth.github.io/cgspace-notes/tags/notes/
- 2017-12-19T10:14:51+02:00
- 0
-
-
https://alanorth.github.io/cgspace-notes/categories/notes/
2017-09-28T12:00:49+03:00
0
+
+ https://alanorth.github.io/cgspace-notes/tags/notes/
+ 2017-12-19T10:38:57+02:00
+ 0
+
+
https://alanorth.github.io/cgspace-notes/post/
- 2017-12-19T10:14:51+02:00
+ 2017-12-19T10:38:57+02:00
0
https://alanorth.github.io/cgspace-notes/tags/
- 2017-12-19T10:14:51+02:00
+ 2017-12-19T10:38:57+02:00
0
diff --git a/static/2017/12/postgres-connections-month-cgspace-2.png b/static/2017/12/postgres-connections-month-cgspace-2.png
new file mode 100644
index 000000000..11731d504
Binary files /dev/null and b/static/2017/12/postgres-connections-month-cgspace-2.png differ