neo4j配置文件neo4j.conf详解

一、dbms配置

dbms.default_database=neo4j

目录路径

dbms.directories.data=data
dbms.directories.plugins=plugins
dbms.directories.certificates=certificates
dbms.directories.logs=logs
dbms.directories.lib=lib
dbms.directories.run=run
dbms.directories.metrics=metrics

导入文件的目录，配置后只能从import目录导入，注释后可从任意文件目录导入

dbms.directories.import=import

认证

dbms.security.auth_enabled=false

允许更新

dbms.allow_upgrade=true

初始Java堆大小

dbms.memory.heap.initial_size=512m

最大Java堆大小

dbms.memory.heap.max_size=512m

jvm额外启动参数，多个配置多个

dbms.jvm.additional=-XX:MaxDirectMemorySize=512m

页缓存大小，默认为RAM大小减去最大堆内存后的50%(假如机器上只运行了neo4j)

dbms.memory.pagecache.size=10g

数据库总数

dbms.max_databases=100

是否允许在线备份

dbms.backup.enabled=true

默认只能localhost备份

dbms.backup.listen_address=0.0.0.0:6362
#The maximum time interval of a transaction within which it should be completed.
dbms.transaction.timeout

Defines whether memory for transaction state should be allocated on- or offheap.ON_HEAP, OFF_HEAP。默认OFF_HEAP

dbms.tx_state.memory_allocation=ON_HEAP

The number of Cypher query execution plans that are cached.

dbms.query_cache_size=1000

neo4j运行模式：SINGLE, CORE, READ_REPLICA

dbms.mode=SINGLE

二、JVM配置

初始Java堆大小

dbms.memory.heap.initial_size=512m

最大Java堆大小

dbms.memory.heap.max_size=512m

三、网络连接配置

默认只允许本地连接

dbms.connectors.default_listen_address=0.0.0.0

配置成当前机器IP或hostname

dbms.connectors.default_advertised_address=localhost

Bolt 连接

dbms.connector.bolt.enabled=true
dbms.connector.bolt.tls_level=DISABLED
dbms.connector.bolt.listen_address=:7687

Bolt连接保持时间

dbms.connector.bolt.thread_pool_keep_alive=5m

处理Bolt连接线程池最大线程数，默认400

dbms.connector.bolt.thread_pool_max_size

处理Bolt连接线程池最小线程数，默认5

dbms.connector.bolt.thread_pool_min_size

HTTP 连接

dbms.connector.http.enabled=true
dbms.connector.http.listen_address=:7474

HTTPS 连接

dbms.connector.https.enabled=false
dbms.connector.https.listen_address=:7473

neo4j工作线程数，只对REST连接生效

dbms.threads.worker_count=20

四、metris监控

default true

metrics.enabled=true

监控导出到CSV文件

metrics.csv.enabled=true

允许Prometheus，默认false

metrics.prometheus.enabled=true

The hostname and port to use as Prometheus endpoint

metrics.prometheus.endpoint=localhost:2004