Where Does Solr Store Cores and Config?
Solr search core indexes and server service config paths on Linux for standalone and cloud installs.
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Solr keeps indexes in a data home with one folder per core. Package installs default to /var/solr/data with solr.xml at its root. Each core folder holds index segments and conf sets.
Service settings live in /etc/default/solr.in.sh with heap and home overrides. Cloud mode adds ZooKeeper state beside the cores. Back up the data home with service configs. Index formats change between major releases. Config sets version schema per collection. Replication copies index segments to followers. Backups use replication handlers.
Where Solr stores this, by platform
/var/solr/data
Core indexes with one folder per collection plus solr.xml. Stop the service before copying for consistency. This folder dominates disk on search hosts.
/etc/default/solr.in.sh
Heap, home, and ZooKeeper settings for the service. Holds the data home override when changed. Keep with data backups for restores.
Frequently asked questions
what do i back up for a Solr move
Copy /var/solr/data with solr.xml and zoo.cfg for the same version. Cores sit in the data folder with index and config sets. Keep Java and Solr versions matched.
where is the Solr data home folder
Open solr.in.sh in /etc/default to read the data home override. Packages default to /var/solr/data. The admin UI dashboard also shows the instance directory.
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