概述：操作环境，3台机器，3broker + 2nameserver + 1adminconsle ，dledger模式，相当于1主两从。 保障高可用性。
rcmq路径：/usr/local/rcmq/rcmq-48dledger/
配置文件：
conf/dledger/broker-n0.conf
conf/dledger/broker-n1.conf
conf/dledger/broker-n2.conf
节点分布：
n0-172.11.84.248:40911; broker、namesrv
n1-172.11.84.247:40921; broker、namesrv
n2-172.11.85.0:40931; broker、adminconsole
节点一具体配置内容：
[root@mq-01 dledger]# more broker-n0.conf
brokerClusterName = rcmqprddle
brokerName=RaftNode00
brokerId=0
namesrvAddr=172.11.84.248:9876;172.11.84.247:9876
defaultTopicQueueNums=4
autoCreateTopicEnable=true
autoCreateSubscriptionGroup=true
listenPort=30911
deleteWhen=04
fileReservedTime=48
mapedFileSizeCommitLog=1073741824
mapedFileSizeConsumeQueue=300000
diskMaxUsedSpaceRatio=88
maxTransferBytesOnMessageInMemory=2097152
maxTransferCountOnMessageInMemory=256
maxTransferBytesOnMessageInDisk=262144
maxTransferCountOnMessageInDisk=64
storePathRootDir=/rcmqdata01/rmqstore/node00
storePathCommitLog=/rcmqdata01/rmqstore/node00/commitlog
#storePathRootDir=/rcmqdata1/rmqstore/node00
#storePathCommitLog=/rcmqdata1/rmqstore/node00/commitlog
maxMessageSize=65536
sendMessageThreadPoolNums=64
useReentrantLockWhenPutMessage=true
waitTimeMillsInSendQueue=350
enableDLegerCommitLog=true
dLegerGroup=RaftNode00
dLegerPeers=n0-172.11.84.248:40911;n1-172.11.84.247:40921;n2-172.11.85.0:40931
## must be unique
dLegerSelfId=n0
#sendMessageThreadPoolNums=4
节点二具体配置内容：
[root@mq-02 dledger]# more broker-n1.conf
brokerClusterName = rcmqprddle
brokerName=RaftNode00
namesrvAddr=172.11.84.248:9876;172.11.84.247:9876
defaultTopicQueueNums=4
autoCreateTopicEnable=true
autoCreateSubscriptionGroup=true
listenPort=30921
deleteWhen=04
fileReservedTime=48
mapedFileSizeCommitLog=1073741824
mapedFileSizeConsumeQueue=300000
diskMaxUsedSpaceRatio=88
maxTransferBytesOnMessageInMemory=2097152
maxTransferCountOnMessageInMemory=256
maxTransferBytesOnMessageInDisk=262144
maxTransferCountOnMessageInDisk=64
storePathRootDir=/rcmqdata01/rmqstore/node00
storePathCommitLog=/rcmqdata01/rmqstore/node00/commitlog
#storePathRootDir=/rcmqdata1/rmqstore/node00
#storePathCommitLog=/rcmqdata1/rmqstore/node00/commitlog
maxMessageSize=65536
sendMessageThreadPoolNums=64
useReentrantLockWhenPutMessage=true
waitTimeMillsInSendQueue=350
enableDLegerCommitLog=true
dLegerGroup=RaftNode00
dLegerPeers=n0-172.11.84.248:40911;n1-172.11.84.247:40921;n2-172.11.85.0:40931
dLegerSelfId=n1
#sendMessageThreadPoolNums=4
节点三具体配置内容：
[root@mq-03 dledger]# more broker-n2.conf
brokerClusterName = rcmqprddle
brokerName=RaftNode00
namesrvAddr=172.11.84.248:9876;172.11.84.247:9876
defaultTopicQueueNums=4
autoCreateTopicEnable=true
autoCreateSubscriptionGroup=true
listenPort=30931
deleteWhen=04
fileReservedTime=48
mapedFileSizeCommitLog=1073741824
mapedFileSizeConsumeQueue=300000
diskMaxUsedSpaceRatio=88
maxTransferBytesOnMessageInMemory=2097152
maxTransferCountOnMessageInMemory=256
maxTransferBytesOnMessageInDisk=262144
maxTransferCountOnMessageInDisk=64
storePathRootDir=/rcmqdata02/rmqstore/node00
storePathCommitLog=/rcmqdata02/rmqstore/node00/commitlog
#storePathRootDir=/rcmqdata2/rmqstore/node00
#storePathCommitLog=/rcmqdata2/rmqstore/node00/commitlog
maxMessageSize=65536
sendMessageThreadPoolNums=64
useReentrantLockWhenPutMessage=true
waitTimeMillsInSendQueue=350
enableDLegerCommitLog=true
dLegerGroup=RaftNode00
dLegerPeers=n0-172.11.84.248:40911;n1-172.11.84.247:40921;n2-172.11.85.0:40931
dLegerSelfId=n2
#sendMessageThreadPoolNums=4
分别启动2个nameserver节点：
#cd /usr/local/rcmq/rcmq-48dledger/
#nohup sh bin/mqnamesrv > ./logs/namesrv.log 2>&1 &
分别启动3个broker节点：
#nohup sh bin/mqbroker -c conf/dledger/broker-n0.conf > ./logs/broker-n0.log 2>&1 &
#nohup sh bin/mqbroker -c conf/dledger/broker-n1.conf > ./logs/broker-n1.log 2>&1 &
#nohup sh bin/mqbroker -c conf/dledger/broker-n2.conf > ./logs/broker-n2.log 2>&1 &
启动管理后台（去github上拿文件进行编译）：
#nohup java -jar rocketmq-console-ng-2.0.0.jar --rocketmq.config.namesrvAddr=172.11.84.247:9876 > rcmqadmin.log 2>&1 &
关于内存调整（根据实际比例调整）：
runbroker.sh ： JAVA_OPT="${JAVA_OPT} -server -Xms2g -Xmx2g -Xmn1g"
runserver.sh ： JAVA_OPT="${JAVA_OPT} -server -Xms2g -Xmx2g -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m"
关于停止服务：
#./bin/mqshutdown broker
#./bin/mqshutdown namesrv
