This commit introduces CPU based circuit breaker. This circuit breaker
tracks the average CPU load per minute and triggers if the value exceeds
a configurable value.
This commit also adds a specific control flag for Memory Circuit Breaker
to allow enabling/disabling the same.
* SOLR-14588: Implement Circuit Breakers
This commit consists of two parts: add circuit breakers infrastructure and a "real" JVM heap memory based
circuit breaker which monitors incoming search requests and rejects them with SERVICE_TOO_BUSY error
if the defined threshold is breached, thus giving headroom to existing indexing and search requests
to complete.
* SOLR-14588: Implement Circuit Breakers
This commit consists of two parts: initial circuit breakers infrastructure and real JVM memory based
circuit breaker which monitors incoming search requests and rejects them with SERVICE_TOO_BUSY error
if the defined threshold is breached, thus giving headroom to existing indexing and search requests
to complete.
Prior to this commit, Solr's Jetty listened for connections on all
network interfaces. This commit changes it to only listen on localhost,
to prevent incautious administrators from accidentally exposing their
Solr deployment to the world.
Administrators who wish to override this behavior can set the
SOLR_JETTY_HOST property in their Solr include file
(solr.in.sh/solr.in.cmd) to "0.0.0.0" or some other value.
A version of this commit was previously reverted due to inconsistency
between SOLR_HOST and SOLR_JETTY_HOST. This commit fixes this issue.
Prior to this commit, Solr's Jetty listened for connections on all
network interfaces. This commit changes it to only listen on localhost,
to prevent incautious administrators from accidentally exposing their
Solr deployment to the world.
Administrators who wish to override this behavior can set the
SOLR_JETTY_HOST property in their Solr include file
(solr.in.sh/solr.in.cmd) to "0.0.0.0" or some other value.
Currently the documentation pretends to create a JKS keystore. It is
only actually a JKS keystore on java 8: on java9+ it is a PKCS12
keystore with a .jks extension (because PKCS12 is the new java default).
It works even though solr explicitly tells the JDK
(SOLR_SSL_KEY_STORE_TYPE=JKS) that its JKS when it is in fact not, due
to how keystore backwards compatibility was implemented.
Fix docs to explicitly create a PKCS12 keystore with .p12 extension and
so on instead of a PKCS12 keystore masquerading as a JKS one. This
simplifies the SSL steps since the "conversion" step (which was doing
nothing) from .JKS -> .P12 can be removed.
* SOLR-13984: add (experimental, disabled by default) security manager support.
User can set SOLR_SECURITY_MANAGER_ENABLED=true to enable security manager at runtime.
The current policy file used by tests is moved to solr/server
Additional permissions are granted for the filesystem locations set by bin/solr, and networking everywhere is enabled.
This takes advantage of the fact that permission entries are ignored if properties are not defined:
https://docs.oracle.com/javase/7/docs/technotes/guides/security/PolicyFiles.html#PropertyExp
SOLR-14136: ip whitelist/blacklist via env vars
This makes it easy to restrict access to Solr by IP. For example SOLR_IP_WHITELIST="127.0.0.1, 192.168.0.0/24, [::1], [2000:123:4:5::]/64" would restrict access to v4/v6 localhost, the 192.168.0 ipv4 network, and 2000:123:4:5 ipv6 network. Any other IP will receive a 403 response.
Blacklisting functionality can deny access to problematic addresses or networks that would otherwise be allowed. For example SOLR_IP_BLACKLIST="192.168.0.3, 192.168.0.4" would explicitly prevent those two specific addresses from accessing solr.
User can now set SOLR_REQUESTLOG_ENABLED=true to enable the jetty request log, instead of editing XML. The location of the request logs will respect SOLR_LOGS_DIR if that is set. The deprecated NCSARequestLog is no longer used, instead it uses CustomRequestLog with NCSA_FORMAT.
Jetty 9.4.16.v20190411 and up introduced separate
client and server SslContextFactory implementations.
This split requires the proper use of of
SslContextFactory in clients and server configs.
This fixes the following
* SSL with SOLR_SSL_NEED_CLIENT_AUTH not working since v8.2.0
* Http2SolrClient SSL not working in branch_8x
Signed-off-by: Kevin Risden <krisden@apache.org>
The default configset no longer has the following:
- Library inclusions (<lib ../>) for extraction, solr-cell libs, clustering, velocity and language identifier
- /browse, /tvrh and /update/extract handlers
- TermVector component (if someone wants it, can be added using config APIs)
- XSLT response writer
- Velocity response writer
If you want to use them in your collections, please add them to your configset manually or through the Config APIs.
