shalinmangar commented on a change in pull request #1082: SOLR-13984: add
(experimental, disabled by default) security manager support
URL: https://github.com/apache/lucene-solr/pull/1082#discussion_r360646424
##########
File path: solr/bin/solr
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@@ -2071,6 +2071,17 @@ else
REMOTE_JMX_OPTS=()
fi
+# Enable java security manager (limiting filesystem access and other things)
+# Don't cache DNS lookups forever, set the value back to the original JDK
default.
+if [ "$SOLR_SECURITY_MANAGER_ENABLED" == "true" ]; then
+ SECURITY_MANAGER_OPTS=('-Djava.security.manager' \
+ "-Djava.security.policy=${SOLR_SERVER_DIR}/etc/security.policy" \
+ '-Dsun.net.inetaddr.ttl=30' \
Review comment:
Shouldn't this be configurable by the user? Perhaps we keep this default but
make it configurable with a `SOLR_NETWORKADDRESS_CACHE_TTL` variable.
Although most (all?) JVMs still honor the `sun.net.inetaddr.ttl` but it is
officially deprecated so we should use `-Dnetworkaddress.cache.ttl`
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