solr/bin/solr.in.sh - lucene-solr - Git at Google

 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.
 # The ASF licenses this file to You under the Apache License, Version 2.0
 # (the "License"); you may not use this file except in compliance with
 # the License.  You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.

 # Settings here will override settings in existing env vars or in bin/solr.  The default shipped state
 # of this file is completely commented.

 # By default the script will use JAVA_HOME to determine which java
 # to use, but you can set a specific path for Solr to use without
 # affecting other Java applications on your server/workstation.
 #SOLR_JAVA_HOME=""

 # This controls the number of seconds that the solr script will wait for
 # Solr to stop gracefully.  If the graceful stop fails, the script will
 # forcibly stop Solr.
 #SOLR_STOP_WAIT="180"

 # This controls the number of seconds that the solr script will wait for
 # Solr to start.  If the start fails, the script will give up waiting and
 # display the last few lines of the logfile.
 #SOLR_START_WAIT="$SOLR_STOP_WAIT"

 # Increase Java Heap as needed to support your indexing / query needs
 #SOLR_HEAP="512m"

 # Expert: If you want finer control over memory options, specify them directly
 # Comment out SOLR_HEAP if you are using this though, that takes precedence
 #SOLR_JAVA_MEM="-Xms512m -Xmx512m"

 # Enable verbose GC logging...
 #  * If this is unset, various default options will be selected depending on which JVM version is in use
 #  * For Java 8: if this is set, additional params will be added to specify the log file & rotation
 #  * For Java 9 or higher: each included opt param that starts with '-Xlog:gc', but does not include an
 #    output specifier, will have a 'file' output specifier (as well as formatting & rollover options)
 #    appended, using the effective value of the SOLR_LOGS_DIR.
 #
 #GC_LOG_OPTS='-Xlog:gc*'  # (Java 9+)
 #GC_LOG_OPTS="-verbose:gc -XX:+PrintHeapAtGC -XX:+PrintGCDetails \
 #  -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintTenuringDistribution -XX:+PrintGCApplicationStoppedTime"

 # These GC settings have shown to work well for a number of common Solr workloads
 #GC_TUNE=" \
 #-XX:+ExplicitGCInvokesConcurrent \
 #-XX:SurvivorRatio=4 \
 #-XX:TargetSurvivorRatio=90 \
 #-XX:MaxTenuringThreshold=8 \
 #-XX:+UseConcMarkSweepGC \
 #-XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 \
 #-XX:+CMSScavengeBeforeRemark \
 #-XX:PretenureSizeThreshold=64m \
 #-XX:+UseCMSInitiatingOccupancyOnly \
 #-XX:CMSInitiatingOccupancyFraction=50 \
 #-XX:CMSMaxAbortablePrecleanTime=6000 \
 #-XX:+CMSParallelRemarkEnabled \
 #-XX:+ParallelRefProcEnabled        etc.

 # Set the ZooKeeper connection string if using an external ZooKeeper ensemble
 # e.g. host1:2181,host2:2181/chroot
 # Leave empty if not using SolrCloud
 #ZK_HOST=""

 # Set to true if your ZK host has a chroot path, and you want to create it automatically.
 #ZK_CREATE_CHROOT=true

 # Set the ZooKeeper client timeout (for SolrCloud mode)
 #ZK_CLIENT_TIMEOUT="30000"

 # By default the start script uses "localhost"; override the hostname here
 # for production SolrCloud environments to control the hostname exposed to cluster state
 #SOLR_HOST="192.168.1.1"

 # By default Solr will try to connect to Zookeeper with 30 seconds in timeout; override the timeout if needed
 #SOLR_WAIT_FOR_ZK="30"

 # By default the start script uses UTC; override the timezone if needed
 #SOLR_TIMEZONE="UTC"

 # Set to true to activate the JMX RMI connector to allow remote JMX client applications
 # to monitor the JVM hosting Solr; set to "false" to disable that behavior
 # (false is recommended in production environments)
 #ENABLE_REMOTE_JMX_OPTS="false"

 # The script will use SOLR_PORT+10000 for the RMI_PORT or you can set it here
 # RMI_PORT=18983

 # Anything you add to the SOLR_OPTS variable will be included in the java
 # start command line as-is, in ADDITION to other options. If you specify the
 # -a option on start script, those options will be appended as well. Examples:
 #SOLR_OPTS="$SOLR_OPTS -Dsolr.autoSoftCommit.maxTime=3000"
 #SOLR_OPTS="$SOLR_OPTS -Dsolr.autoCommit.maxTime=60000"

 # Location where the bin/solr script will save PID files for running instances
 # If not set, the script will create PID files in $SOLR_TIP/bin
 #SOLR_PID_DIR=

 # Path to a directory for Solr to store cores and their data. By default, Solr will use server/solr
 # If solr.xml is not stored in ZooKeeper, this directory needs to contain solr.xml
 #SOLR_HOME=

 # Path to a directory that Solr will use as root for data folders for each core.
 # If not set, defaults to <instance_dir>/data. Overridable per core through 'dataDir' core property
 #SOLR_DATA_HOME=

 # Solr provides a default Log4J configuration xml file in server/resources
 # however, you may want to customize the log settings and file appender location
 # so you can point the script to use a different log4j2.xml file
 #LOG4J_PROPS=/var/solr/log4j2.xml

 # Changes the logging level. Valid values: ALL, TRACE, DEBUG, INFO, WARN, ERROR, FATAL, OFF. Default is INFO
 # This is an alternative to changing the rootLogger in log4j2.xml
 #SOLR_LOG_LEVEL=INFO

 # Location where Solr should write logs to. Absolute or relative to solr start dir
 #SOLR_LOGS_DIR=logs

 # Enables log rotation before starting Solr. Setting SOLR_LOG_PRESTART_ROTATION=true will let Solr take care of pre
 # start rotation of logs. This is false by default as log4j2 handles this for us. If you choose to use another log
 # framework that cannot do startup rotation, you may want to enable this to let Solr rotate logs on startup.
 #SOLR_LOG_PRESTART_ROTATION=false

 # Enables jetty request log for all requests
 #SOLR_REQUESTLOG_ENABLED=false

 # Sets the port Solr binds to, default is 8983
 #SOLR_PORT=8983

 # Restrict access to solr by IP address.
 # Specify a comma-separated list of addresses or networks, for example:
 #   127.0.0.1, 192.168.0.0/24, [::1], [2000:123:4:5::]/64
 #SOLR_IP_WHITELIST=

 # Block access to solr from specific IP addresses.
 # Specify a comma-separated list of addresses or networks, for example:
 #   127.0.0.1, 192.168.0.0/24, [::1], [2000:123:4:5::]/64
 #SOLR_IP_BLACKLIST=

 # Enables HTTPS. It is implictly true if you set SOLR_SSL_KEY_STORE. Use this config
 # to enable https module with custom jetty configuration.
 #SOLR_SSL_ENABLED=true
 # Uncomment to set SSL-related system properties
 # Be sure to update the paths to the correct keystore for your environment
 #SOLR_SSL_KEY_STORE=etc/solr-ssl.keystore.p12
 #SOLR_SSL_KEY_STORE_PASSWORD=secret
 #SOLR_SSL_TRUST_STORE=etc/solr-ssl.keystore.p12
 #SOLR_SSL_TRUST_STORE_PASSWORD=secret
 # Require clients to authenticate
 #SOLR_SSL_NEED_CLIENT_AUTH=false
 # Enable clients to authenticate (but not require)
 #SOLR_SSL_WANT_CLIENT_AUTH=false
 # Verify client's hostname during SSL handshake
 #SOLR_SSL_CLIENT_HOSTNAME_VERIFICATION=false
 # SSL Certificates contain host/ip "peer name" information that is validated by default. Setting
 # this to false can be useful to disable these checks when re-using a certificate on many hosts
 #SOLR_SSL_CHECK_PEER_NAME=true
 # Override Key/Trust Store types if necessary
 #SOLR_SSL_KEY_STORE_TYPE=PKCS12
 #SOLR_SSL_TRUST_STORE_TYPE=PKCS12

 # Uncomment if you want to override previously defined SSL values for HTTP client
 # otherwise keep them commented and the above values will automatically be set for HTTP clients
 #SOLR_SSL_CLIENT_KEY_STORE=
 #SOLR_SSL_CLIENT_KEY_STORE_PASSWORD=
 #SOLR_SSL_CLIENT_TRUST_STORE=
 #SOLR_SSL_CLIENT_TRUST_STORE_PASSWORD=
 #SOLR_SSL_CLIENT_KEY_STORE_TYPE=
 #SOLR_SSL_CLIENT_TRUST_STORE_TYPE=

 # Sets path of Hadoop credential provider (hadoop.security.credential.provider.path property) and
 # enables usage of credential store.
 # Credential provider should store the following keys:
 # * solr.jetty.keystore.password
 # * solr.jetty.truststore.password
 # Set the two below if you want to set specific store passwords for HTTP client
 # * javax.net.ssl.keyStorePassword
 # * javax.net.ssl.trustStorePassword
 # More info: https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/CredentialProviderAPI.html
 #SOLR_HADOOP_CREDENTIAL_PROVIDER_PATH=localjceks://file/home/solr/hadoop-credential-provider.jceks
 #SOLR_OPTS=" -Dsolr.ssl.credential.provider.chain=hadoop"

 # Settings for authentication
 # Please configure only one of SOLR_AUTHENTICATION_CLIENT_BUILDER or SOLR_AUTH_TYPE parameters
 #SOLR_AUTHENTICATION_CLIENT_BUILDER="org.apache.solr.client.solrj.impl.PreemptiveBasicAuthClientBuilderFactory"
 #SOLR_AUTH_TYPE="basic"
 #SOLR_AUTHENTICATION_OPTS="-Dbasicauth=solr:SolrRocks"

 # Settings for ZK ACL
 #SOLR_ZK_CREDS_AND_ACLS="-DzkACLProvider=org.apache.solr.common.cloud.VMParamsAllAndReadonlyDigestZkACLProvider \
 #  -DzkCredentialsProvider=org.apache.solr.common.cloud.VMParamsSingleSetCredentialsDigestZkCredentialsProvider \
 #  -DzkDigestUsername=admin-user -DzkDigestPassword=CHANGEME-ADMIN-PASSWORD \
 #  -DzkDigestReadonlyUsername=readonly-user -DzkDigestReadonlyPassword=CHANGEME-READONLY-PASSWORD"
 #SOLR_OPTS="$SOLR_OPTS $SOLR_ZK_CREDS_AND_ACLS"

 # Jetty GZIP module enabled by default
 #SOLR_GZIP_ENABLED=true

 # Settings for common system values that may cause operational imparement when system defaults are used.
 # Solr can use many processes and many file handles. On modern operating systems the savings by leaving
 # these settings low is minuscule, while the consequence can be Solr instability. To turn these checks off, set
 # SOLR_ULIMIT_CHECKS=false either here or as part of your profile.

 # Different limits can be set in solr.in.sh or your profile if you prefer as well.
 #SOLR_RECOMMENDED_OPEN_FILES=
 #SOLR_RECOMMENDED_MAX_PROCESSES=
 #SOLR_ULIMIT_CHECKS=

 # When running Solr in non-cloud mode and if planning to do distributed search (using the "shards" parameter), the
 # list of hosts needs to be whitelisted or Solr will forbid the request. The whitelist can be configured in solr.xml,
 # or if you are using the OOTB solr.xml, can be specified using the system property "solr.shardsWhitelist". Alternatively
 # host checking can be disabled by using the system property "solr.disable.shardsWhitelist"
 #SOLR_OPTS="$SOLR_OPTS -Dsolr.shardsWhitelist=http://localhost:8983,http://localhost:8984"

 # For a visual indication in the Admin UI of what type of environment this cluster is, configure
 # a -Dsolr.environment property below. Valid values are prod, stage, test, dev, with an optional
 # label or color, e.g. -Dsolr.environment=test,label=Functional+test,color=brown
 #SOLR_OPTS="$SOLR_OPTS -Dsolr.environment=prod"

 # Specifies the path to a common library directory that will be shared across all cores.
 # Any JAR files in this directory will be added to the search path for Solr plugins.
 # If the specified path is not absolute, it will be relative to `$SOLR_HOME`.
 #SOLR_OPTS="$SOLR_OPTS -Dsolr.sharedLib=/path/to/lib"

 # Runs solr in java security manager sandbox. This can protect against some attacks.
 # Runtime properties are passed to the security policy file (server/etc/security.policy)
 # You can also tweak via standard JDK files such as ~/.java.policy, see https://s.apache.org/java8policy
 # This is experimental! It may not work at all with Hadoop/HDFS features.
 #SOLR_SECURITY_MANAGER_ENABLED=false

 # Solr is by default allowed to read and write data from/to SOLR_HOME and a few other well defined locations
 # Sometimes it may be necessary to place a core or a backup on a different location or a different disk
 # This parameter lets you specify file system path(s) to explicitly allow. The special value of '*' will allow any path
 #SOLR_OPTS="$SOLR_OPTS -Dsolr.allowPaths=/mnt/bigdisk,/other/path"

 # Solr can attempt to take a heap dump on out of memory errors. To enable this, uncomment the line setting
 # SOLR_HEAP_DUMP below. Heap dumps will be saved to SOLR_LOG_DIR/dumps by default. Alternatively, you can specify any
 # other directory, which will implicitly enable heap dumping. Dump name pattern will be solr-[timestamp]-pid[###].hprof
 # When using this feature, it is recommended to have an external service monitoring the given dir.
 # If more fine grained control is required, you can manually add the appropriate flags to SOLR_OPTS
 # See https://docs.oracle.com/en/java/javase/11/troubleshoot/command-line-options1.html
 # You can test this behaviour by setting SOLR_HEAP=25m
 #SOLR_HEAP_DUMP=true
 #SOLR_HEAP_DUMP_DIR=/var/log/dumps
	# Licensed to the Apache Software Foundation (ASF) under one or more
	# contributor license agreements. See the NOTICE file distributed with
	# this work for additional information regarding copyright ownership.
	# The ASF licenses this file to You under the Apache License, Version 2.0
	# (the "License"); you may not use this file except in compliance with
	# the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	# Settings here will override settings in existing env vars or in bin/solr. The default shipped state
	# of this file is completely commented.

	# By default the script will use JAVA_HOME to determine which java
	# to use, but you can set a specific path for Solr to use without
	# affecting other Java applications on your server/workstation.
	#SOLR_JAVA_HOME=""

	# This controls the number of seconds that the solr script will wait for
	# Solr to stop gracefully. If the graceful stop fails, the script will
	# forcibly stop Solr.
	#SOLR_STOP_WAIT="180"

	# This controls the number of seconds that the solr script will wait for
	# Solr to start. If the start fails, the script will give up waiting and
	# display the last few lines of the logfile.
	#SOLR_START_WAIT="$SOLR_STOP_WAIT"

	# Increase Java Heap as needed to support your indexing / query needs
	#SOLR_HEAP="512m"

	# Expert: If you want finer control over memory options, specify them directly
	# Comment out SOLR_HEAP if you are using this though, that takes precedence
	#SOLR_JAVA_MEM="-Xms512m -Xmx512m"

	# Enable verbose GC logging...
	# * If this is unset, various default options will be selected depending on which JVM version is in use
	# * For Java 8: if this is set, additional params will be added to specify the log file & rotation
	# * For Java 9 or higher: each included opt param that starts with '-Xlog:gc', but does not include an
	# output specifier, will have a 'file' output specifier (as well as formatting & rollover options)
	# appended, using the effective value of the SOLR_LOGS_DIR.
	#
	#GC_LOG_OPTS='-Xlog:gc*' # (Java 9+)
	#GC_LOG_OPTS="-verbose:gc -XX:+PrintHeapAtGC -XX:+PrintGCDetails \
	# -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintTenuringDistribution -XX:+PrintGCApplicationStoppedTime"

	# These GC settings have shown to work well for a number of common Solr workloads
	#GC_TUNE=" \
	#-XX:+ExplicitGCInvokesConcurrent \
	#-XX:SurvivorRatio=4 \
	#-XX:TargetSurvivorRatio=90 \
	#-XX:MaxTenuringThreshold=8 \
	#-XX:+UseConcMarkSweepGC \
	#-XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 \
	#-XX:+CMSScavengeBeforeRemark \
	#-XX:PretenureSizeThreshold=64m \
	#-XX:+UseCMSInitiatingOccupancyOnly \
	#-XX:CMSInitiatingOccupancyFraction=50 \
	#-XX:CMSMaxAbortablePrecleanTime=6000 \
	#-XX:+CMSParallelRemarkEnabled \
	#-XX:+ParallelRefProcEnabled etc.

	# Set the ZooKeeper connection string if using an external ZooKeeper ensemble
	# e.g. host1:2181,host2:2181/chroot
	# Leave empty if not using SolrCloud
	#ZK_HOST=""

	# Set to true if your ZK host has a chroot path, and you want to create it automatically.
	#ZK_CREATE_CHROOT=true

	# Set the ZooKeeper client timeout (for SolrCloud mode)
	#ZK_CLIENT_TIMEOUT="30000"

	# By default the start script uses "localhost"; override the hostname here
	# for production SolrCloud environments to control the hostname exposed to cluster state
	#SOLR_HOST="192.168.1.1"

	# By default Solr will try to connect to Zookeeper with 30 seconds in timeout; override the timeout if needed
	#SOLR_WAIT_FOR_ZK="30"

	# By default the start script uses UTC; override the timezone if needed
	#SOLR_TIMEZONE="UTC"

	# Set to true to activate the JMX RMI connector to allow remote JMX client applications
	# to monitor the JVM hosting Solr; set to "false" to disable that behavior
	# (false is recommended in production environments)
	#ENABLE_REMOTE_JMX_OPTS="false"

	# The script will use SOLR_PORT+10000 for the RMI_PORT or you can set it here
	# RMI_PORT=18983

	# Anything you add to the SOLR_OPTS variable will be included in the java
	# start command line as-is, in ADDITION to other options. If you specify the
	# -a option on start script, those options will be appended as well. Examples:
	#SOLR_OPTS="$SOLR_OPTS -Dsolr.autoSoftCommit.maxTime=3000"
	#SOLR_OPTS="$SOLR_OPTS -Dsolr.autoCommit.maxTime=60000"

	# Location where the bin/solr script will save PID files for running instances
	# If not set, the script will create PID files in $SOLR_TIP/bin
	#SOLR_PID_DIR=

	# Path to a directory for Solr to store cores and their data. By default, Solr will use server/solr
	# If solr.xml is not stored in ZooKeeper, this directory needs to contain solr.xml
	#SOLR_HOME=

	# Path to a directory that Solr will use as root for data folders for each core.
	# If not set, defaults to <instance_dir>/data. Overridable per core through 'dataDir' core property
	#SOLR_DATA_HOME=

	# Solr provides a default Log4J configuration xml file in server/resources
	# however, you may want to customize the log settings and file appender location
	# so you can point the script to use a different log4j2.xml file
	#LOG4J_PROPS=/var/solr/log4j2.xml

	# Changes the logging level. Valid values: ALL, TRACE, DEBUG, INFO, WARN, ERROR, FATAL, OFF. Default is INFO
	# This is an alternative to changing the rootLogger in log4j2.xml
	#SOLR_LOG_LEVEL=INFO

	# Location where Solr should write logs to. Absolute or relative to solr start dir
	#SOLR_LOGS_DIR=logs

	# Enables log rotation before starting Solr. Setting SOLR_LOG_PRESTART_ROTATION=true will let Solr take care of pre
	# start rotation of logs. This is false by default as log4j2 handles this for us. If you choose to use another log
	# framework that cannot do startup rotation, you may want to enable this to let Solr rotate logs on startup.
	#SOLR_LOG_PRESTART_ROTATION=false

	# Enables jetty request log for all requests
	#SOLR_REQUESTLOG_ENABLED=false

	# Sets the port Solr binds to, default is 8983
	#SOLR_PORT=8983

	# Restrict access to solr by IP address.
	# Specify a comma-separated list of addresses or networks, for example:
	# 127.0.0.1, 192.168.0.0/24, [::1], [2000:123:4:5::]/64
	#SOLR_IP_WHITELIST=

	# Block access to solr from specific IP addresses.
	# Specify a comma-separated list of addresses or networks, for example:
	# 127.0.0.1, 192.168.0.0/24, [::1], [2000:123:4:5::]/64
	#SOLR_IP_BLACKLIST=

	# Enables HTTPS. It is implictly true if you set SOLR_SSL_KEY_STORE. Use this config
	# to enable https module with custom jetty configuration.
	#SOLR_SSL_ENABLED=true
	# Uncomment to set SSL-related system properties
	# Be sure to update the paths to the correct keystore for your environment
	#SOLR_SSL_KEY_STORE=etc/solr-ssl.keystore.p12
	#SOLR_SSL_KEY_STORE_PASSWORD=secret
	#SOLR_SSL_TRUST_STORE=etc/solr-ssl.keystore.p12
	#SOLR_SSL_TRUST_STORE_PASSWORD=secret
	# Require clients to authenticate
	#SOLR_SSL_NEED_CLIENT_AUTH=false
	# Enable clients to authenticate (but not require)
	#SOLR_SSL_WANT_CLIENT_AUTH=false
	# Verify client's hostname during SSL handshake
	#SOLR_SSL_CLIENT_HOSTNAME_VERIFICATION=false
	# SSL Certificates contain host/ip "peer name" information that is validated by default. Setting
	# this to false can be useful to disable these checks when re-using a certificate on many hosts
	#SOLR_SSL_CHECK_PEER_NAME=true
	# Override Key/Trust Store types if necessary
	#SOLR_SSL_KEY_STORE_TYPE=PKCS12
	#SOLR_SSL_TRUST_STORE_TYPE=PKCS12

	# Uncomment if you want to override previously defined SSL values for HTTP client
	# otherwise keep them commented and the above values will automatically be set for HTTP clients
	#SOLR_SSL_CLIENT_KEY_STORE=
	#SOLR_SSL_CLIENT_KEY_STORE_PASSWORD=
	#SOLR_SSL_CLIENT_TRUST_STORE=
	#SOLR_SSL_CLIENT_TRUST_STORE_PASSWORD=
	#SOLR_SSL_CLIENT_KEY_STORE_TYPE=
	#SOLR_SSL_CLIENT_TRUST_STORE_TYPE=

	# Sets path of Hadoop credential provider (hadoop.security.credential.provider.path property) and
	# enables usage of credential store.
	# Credential provider should store the following keys:
	# * solr.jetty.keystore.password
	# * solr.jetty.truststore.password
	# Set the two below if you want to set specific store passwords for HTTP client
	# * javax.net.ssl.keyStorePassword
	# * javax.net.ssl.trustStorePassword
	# More info: https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/CredentialProviderAPI.html
	#SOLR_HADOOP_CREDENTIAL_PROVIDER_PATH=localjceks://file/home/solr/hadoop-credential-provider.jceks
	#SOLR_OPTS=" -Dsolr.ssl.credential.provider.chain=hadoop"

	# Settings for authentication
	# Please configure only one of SOLR_AUTHENTICATION_CLIENT_BUILDER or SOLR_AUTH_TYPE parameters
	#SOLR_AUTHENTICATION_CLIENT_BUILDER="org.apache.solr.client.solrj.impl.PreemptiveBasicAuthClientBuilderFactory"
	#SOLR_AUTH_TYPE="basic"
	#SOLR_AUTHENTICATION_OPTS="-Dbasicauth=solr:SolrRocks"

	# Settings for ZK ACL
	#SOLR_ZK_CREDS_AND_ACLS="-DzkACLProvider=org.apache.solr.common.cloud.VMParamsAllAndReadonlyDigestZkACLProvider \
	# -DzkCredentialsProvider=org.apache.solr.common.cloud.VMParamsSingleSetCredentialsDigestZkCredentialsProvider \
	# -DzkDigestUsername=admin-user -DzkDigestPassword=CHANGEME-ADMIN-PASSWORD \
	# -DzkDigestReadonlyUsername=readonly-user -DzkDigestReadonlyPassword=CHANGEME-READONLY-PASSWORD"
	#SOLR_OPTS="$SOLR_OPTS $SOLR_ZK_CREDS_AND_ACLS"

	# Jetty GZIP module enabled by default
	#SOLR_GZIP_ENABLED=true

	# Settings for common system values that may cause operational imparement when system defaults are used.
	# Solr can use many processes and many file handles. On modern operating systems the savings by leaving
	# these settings low is minuscule, while the consequence can be Solr instability. To turn these checks off, set
	# SOLR_ULIMIT_CHECKS=false either here or as part of your profile.

	# Different limits can be set in solr.in.sh or your profile if you prefer as well.
	#SOLR_RECOMMENDED_OPEN_FILES=
	#SOLR_RECOMMENDED_MAX_PROCESSES=
	#SOLR_ULIMIT_CHECKS=

	# When running Solr in non-cloud mode and if planning to do distributed search (using the "shards" parameter), the
	# list of hosts needs to be whitelisted or Solr will forbid the request. The whitelist can be configured in solr.xml,
	# or if you are using the OOTB solr.xml, can be specified using the system property "solr.shardsWhitelist". Alternatively
	# host checking can be disabled by using the system property "solr.disable.shardsWhitelist"
	#SOLR_OPTS="$SOLR_OPTS -Dsolr.shardsWhitelist=http://localhost:8983,http://localhost:8984"

	# For a visual indication in the Admin UI of what type of environment this cluster is, configure
	# a -Dsolr.environment property below. Valid values are prod, stage, test, dev, with an optional
	# label or color, e.g. -Dsolr.environment=test,label=Functional+test,color=brown
	#SOLR_OPTS="$SOLR_OPTS -Dsolr.environment=prod"

	# Specifies the path to a common library directory that will be shared across all cores.
	# Any JAR files in this directory will be added to the search path for Solr plugins.
	# If the specified path is not absolute, it will be relative to `$SOLR_HOME`.
	#SOLR_OPTS="$SOLR_OPTS -Dsolr.sharedLib=/path/to/lib"

	# Runs solr in java security manager sandbox. This can protect against some attacks.
	# Runtime properties are passed to the security policy file (server/etc/security.policy)
	# You can also tweak via standard JDK files such as ~/.java.policy, see https://s.apache.org/java8policy
	# This is experimental! It may not work at all with Hadoop/HDFS features.
	#SOLR_SECURITY_MANAGER_ENABLED=false

	# Solr is by default allowed to read and write data from/to SOLR_HOME and a few other well defined locations
	# Sometimes it may be necessary to place a core or a backup on a different location or a different disk
	# This parameter lets you specify file system path(s) to explicitly allow. The special value of '*' will allow any path
	#SOLR_OPTS="$SOLR_OPTS -Dsolr.allowPaths=/mnt/bigdisk,/other/path"

	# Solr can attempt to take a heap dump on out of memory errors. To enable this, uncomment the line setting
	# SOLR_HEAP_DUMP below. Heap dumps will be saved to SOLR_LOG_DIR/dumps by default. Alternatively, you can specify any
	# other directory, which will implicitly enable heap dumping. Dump name pattern will be solr-[timestamp]-pid[###].hprof
	# When using this feature, it is recommended to have an external service monitoring the given dir.
	# If more fine grained control is required, you can manually add the appropriate flags to SOLR_OPTS
	# See https://docs.oracle.com/en/java/javase/11/troubleshoot/command-line-options1.html
	# You can test this behaviour by setting SOLR_HEAP=25m
	#SOLR_HEAP_DUMP=true
	#SOLR_HEAP_DUMP_DIR=/var/log/dumps