# 安装 OpenJDK 11 与基础工具（wget/tar/ssh 用于下载解压与 Hadoop 启停）
apt-get update
apt-get install -y openjdk-11-jdk wget tar openssh-client openssh-server maven

java -version

openjdk version "11.0.32.1" 2026-08-18
OpenJDK Runtime Environment (build 11.0.32.1+1-post-1ubuntu1-22.04-Ubuntu)
OpenJDK 64-Bit Server VM (build 11.0.32.1+1-post-1ubuntu1-22.04-Ubuntu, mixed mode, sharing)

# 设置主机名（按实际规划修改）
hostnamectl set-hostname node1.fluo.example

127.0.0.1       localhost
::1             localhost ip6-localhost ip6-loopback
172.17.0.4      node1.fluo.example node1

hostname

node1.fluo.example

# 生成密钥对（无口令）
ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa
# 将公钥写入本机 authorized_keys
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
# 首次连接记录本机 host key（避免脚本交互卡住）
ssh -o StrictHostKeyChecking=accept-new localhost true

ssh localhost hostname

node1.fluo.example

mkdir -p /opt/dl && cd /opt/dl
# Hadoop 3.3.6（华为云镜像，直连速度快）
wget https://mirrors.huaweicloud.com/hadoop/common/hadoop-3.3.6/hadoop-3.3.6.tar.gz
# ZooKeeper 3.8.4（Apache 官方归档）
wget https://archive.apache.org/dist/zookeeper/zookeeper-3.8.4/apache-zookeeper-3.8.4-bin.tar.gz
# Accumulo 2.1.0（Apache 官方归档）
wget https://archive.apache.org/dist/accumulo/2.1.0/accumulo-2.1.0-bin.tar.gz
# Fluo 2.0.0（Apache 官方归档）
wget https://archive.apache.org/dist/fluo/fluo/2.0.0/fluo-2.0.0-bin.tar.gz

ls -lh /opt/dl/*.tar.gz

-rw-r--r-- 1 root root  38M Nov  1  2022 accumulo-2.1.0-bin.tar.gz
-rw-r--r-- 1 root root  14M Feb 12  2024 apache-zookeeper-3.8.4-bin.tar.gz
-rw-r--r-- 1 root root 900K Apr 18  2023 fluo-2.0.0-bin.tar.gz
-rw-r--r-- 1 root root 697M Jun 25  2023 hadoop-3.3.6.tar.gz

sha512sum hadoop-3.3.6.tar.gz apache-zookeeper-3.8.4-bin.tar.gz accumulo-2.1.0-bin.tar.gz fluo-2.0.0-bin.tar.gz

de3eaca2e0517e4b569a88b63c89fae19cb8ac6c01ff990f1ff8f0cc0f3128c8e8a23db01577ca562a0e0bb1b4a3889f8c74384e609cd55e537aada3dcaa9f8a  hadoop-3.3.6.tar.gz
4d85d6f7644d5f36d9c4d65e78bd662ab35ebe1380d762c24c12b98af029027eee453437c9245dbdf2b9beb77cd6b690b69e26f91cf9d11b0a183a979c73fa43  apache-zookeeper-3.8.4-bin.tar.gz
9bbc4defc114013f145e9e9fdd08683c842a29faaa01ea6e80555549a6aecef86ee6657cce23183b411a64c31123db682a6944e2825eef83c76fb5a91620235f  accumulo-2.1.0-bin.tar.gz
79c4706ca18cbbbf2883f7371a36529de8182be7afd5f3cbf70c4bd9d6c577d63db90d1f17cfdb5a3108dbe25b5bc5423a5936f1505d6b1dba7ff96a0fbcaf7e  fluo-2.0.0-bin.tar.gz

cd /opt
tar -xzf /opt/dl/hadoop-3.3.6.tar.gz -C /opt/
ls -ld /opt/hadoop-3.3.6

drwxr-xr-x 9 root root 4096 Jun 25  2023 /opt/hadoop-3.3.6

cat > /etc/profile.d/bigdata.sh <<'EOF'
export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
export HADOOP_HOME=/opt/hadoop-3.3.6
export ZOOKEEPER_HOME=/opt/apache-zookeeper-3.8.4-bin
export ACCUMULO_HOME=/opt/accumulo-2.1.0
export PATH=$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$ZOOKEEPER_HOME/bin:$ACCUMULO_HOME/bin:$PATH
EOF
source /etc/profile.d/bigdata.sh

cat >> /opt/hadoop-3.3.6/etc/hadoop/hadoop-env.sh <<'EOF'
export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
export HDFS_NAMENODE_OPTS="-Xms256m -Xmx512m"
export HDFS_DATANODE_OPTS="-Xms256m -Xmx512m"
export HDFS_NAMENODE_USER=root
export HDFS_DATANODE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
export PDSH_RCMD_TYPE=ssh
EOF

cat > /opt/hadoop-3.3.6/etc/hadoop/core-site.xml <<'EOF'
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <property>
    <name>fs.defaultFS</name>
    <value>hdfs://localhost:9000</value>
  </property>
  <property>
    <name>hadoop.tmp.dir</name>
    <value>/opt/hadoop-data/tmp</value>
  </property>
</configuration>
EOF

cat > /opt/hadoop-3.3.6/etc/hadoop/hdfs-site.xml <<'EOF'
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <property>
    <name>dfs.replication</name>
    <value>1</value>
  </property>
  <property>
    <name>dfs.namenode.name.dir</name>
    <value>file:///opt/hadoop-data/namenode</value>
  </property>
  <property>
    <name>dfs.datanode.data.dir</name>
    <value>file:///opt/hadoop-data/datanode</value>
  </property>
</configuration>
EOF
mkdir -p /opt/hadoop-data/tmp /opt/hadoop-data/namenode /opt/hadoop-data/datanode

hdfs namenode -format

2026-10-14 12:40:03,842 INFO common.Storage: Storage directory /opt/hadoop-data/namenode has been successfully formatted.
2026-10-14 12:40:03,984 INFO namenode.FSImageFormatProtobuf: Image file /opt/hadoop-data/namenode/current/fsimage.ckpt_0000000000000000000 of size 399 bytes saved in 0 seconds .
2026-10-14 12:40:04,015 INFO namenode.FSNamesystem: Stopping services started for active state
2026-10-14 12:40:04,020 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at node1.fluo.example/172.17.0.4
************************************************************/

start-dfs.sh

Starting namenodes on [localhost]
Starting datanodes
Starting secondary namenodes [node1.fluo.example]

jps

26697 NameNode
26826 DataNode
27077 SecondaryNameNode
27957 Jps

wget -q -O /dev/null http://localhost:9870 && echo "hdfs-9870 HTTP OK"

hdfs-9870 HTTP OK

hdfs dfsadmin -report | grep -A3 "Live datanodes"

Live datanodes (1):

Name: 127.0.0.1:9866 (localhost)
Hostname: node1.fluo.example

tar -xzf /opt/dl/apache-zookeeper-3.8.4-bin.tar.gz -C /opt/
ls -ld /opt/apache-zookeeper-3.8.4-bin

drwxr-xr-x 8 root root 4096 Feb 12  2024 /opt/apache-zookeeper-3.8.4-bin

cat > /opt/apache-zookeeper-3.8.4-bin/conf/zoo.cfg <<'EOF'
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/opt/zookeeper-data
clientPort=2181
maxClientCnxns=60
admin.enableServer=false
4lw.commands.whitelist=ruok,srvr,stat,mntr,conf
EOF
mkdir -p /opt/zookeeper-data

cat > /opt/apache-zookeeper-3.8.4-bin/conf/zookeeper-env.sh <<'EOF'
export ZK_SERVER_HEAP=256
EOF

zkServer.sh start

ZooKeeper JMX enabled by default
Using config: /opt/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

zkServer.sh status

ZooKeeper JMX enabled by default
Using config: /opt/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: standalone

tar -xzf /opt/dl/accumulo-2.1.0-bin.tar.gz -C /opt/
ls -ld /opt/accumulo-2.1.0

drwxr-xr-x 9 root root 4096 Nov  1  2022 /opt/accumulo-2.1.0

cat > /opt/accumulo-2.1.0/conf/accumulo.properties <<'EOF'
## Sets location in HDFS where Accumulo will store data
instance.volumes=hdfs://localhost:9000/accumulo

## Sets location of Zookeepers
instance.zookeeper.host=localhost:2181

## Change secret before initialization. All Accumulo servers must have same secret
instance.secret=q1w2e3r4

## Set to false if 'accumulo-util build-native' fails
tserver.memory.maps.native.enabled=false
EOF

HADOOP_HOME="${HADOOP_HOME:-/opt/hadoop-3.3.6}"
HADOOP_CONF_DIR="${HADOOP_CONF_DIR:-${HADOOP_HOME}/etc/hadoop}"
ZOOKEEPER_HOME="${ZOOKEEPER_HOME:-/opt/apache-zookeeper-3.8.4-bin}"

case "$cmd" in
  manager | master) JAVA_OPTS=('-Xmx512m' '-Xms512m' "${JAVA_OPTS[@]}") ;;
  monitor) JAVA_OPTS=('-Xmx256m' '-Xms256m' "${JAVA_OPTS[@]}") ;;
  gc) JAVA_OPTS=('-Xmx256m' '-Xms256m' "${JAVA_OPTS[@]}") ;;
  tserver) JAVA_OPTS=('-Xmx512m' '-Xms256m' "${JAVA_OPTS[@]}") ;;
  compaction-coordinator) JAVA_OPTS=('-Xmx512m' '-Xms512m' "${JAVA_OPTS[@]}") ;;
  compactor) JAVA_OPTS=('-Xmx256m' '-Xms256m' "${JAVA_OPTS[@]}") ;;
  *) JAVA_OPTS=('-Xmx256m' '-Xms64m' "${JAVA_OPTS[@]}") ;;
esac

cat > /opt/accumulo-2.1.0/conf/accumulo-client.properties <<'EOF'
instance.name=accumulo1
instance.zookeepers=localhost:2181
auth.type=password
auth.principal=root
auth.token=q1w2e3r4
EOF

accumulo init --instance-name accumulo1 --password q1w2e3r4

2026-10-14T12:41:08,255 [init.Initialize] INFO : Hadoop Filesystem is hdfs://localhost:9000
2026-10-14T12:41:08,257 [init.Initialize] INFO : Accumulo data dirs are [[hdfs://localhost:9000/accumulo]]
2026-10-14T12:41:08,257 [init.Initialize] INFO : Zookeeper server is localhost:2181
2026-10-14T12:41:08,257 [init.Initialize] INFO : Checking if Zookeeper is available. If this hangs, then you need to make sure zookeeper is running
2026-10-14T12:41:30,996 [init.Initialize] INFO : Created instanceId file hdfs://localhost:9000/accumulo/instance_id/b0ecea40-97d8-48f0-83da-1ec31fdbb562 in hdfs

accumulo-service manager start

Starting manager on node1.fluo.example
2026-10-14T12:44:50,425 [conf.SiteConfiguration] INFO : Found Accumulo configuration on classpath at /opt/accumulo-2.1.0/conf/accumulo.properties
2026-10-14T12:44:51,216 [fs.VolumeManagerImpl] WARN : dfs.datanode.synconclose set to false in hdfs-site.xml: data loss is possible on hard system reset or power loss
2026-10-14T12:44:51,724 [server.ServerContext] INFO : Attempting to talk to zookeeper
2026-10-14T12:44:51,726 [server.ServerContext] INFO : ZooKeeper connected and initialized, attempting to talk to HDFS
2026-10-14T12:44:51,744 [server.ServerContext] INFO : Connected to HDFS

accumulo-service tserver start

Starting tserver on node1.fluo.example

accumulo-service gc start

Starting gc on node1.fluo.example

accumulo-service monitor start

Starting monitor on node1.fluo.example

jps

12448 QuorumPeerMain
27604 Main
27671 Main
27739 Main
27547 Main
26697 NameNode
26826 DataNode
27077 SecondaryNameNode
29001 Jps

accumulo shell -e "tables -np"

Loading configuration from /opt/accumulo-2.1.0/conf/accumulo-client.properties
accumulo.metadata
accumulo.replication
accumulo.root

wget -q -O /dev/null http://localhost:9995 && echo "accumulo-9995 HTTP OK"

accumulo-9995 HTTP OK

tar -xzf /opt/dl/fluo-2.0.0-bin.tar.gz -C /opt/
ls -ld /opt/fluo-2.0.0

drwxr-xr-x 10 root root 4096 Apr 18  2023 /opt/fluo-2.0.0

/opt/fluo-2.0.0/
├── bin/fluo           # 全部 CLI 命令入口
├── conf/
│   ├── fluo-app.properties   # 应用属性模板（init 时用 -p 指向你的副本）
│   ├── fluo-conn.properties  # 实例连接配置
│   ├── fluo-env.sh           # 环境变量与 classpath 装配
│   └── log4j2.properties
├── lib/               # Fluo 自身 jar（fluo-api/fluo-core 等）
│   ├── fetch.sh       # 依赖下载脚本（extra / ahz）
│   └── ahz/           # fetch.sh ahz 下载的 Accumulo/Hadoop/ZK 依赖
└── logs/

/opt/fluo-2.0.0/lib/fetch.sh extra

SUCCESS: Dependency exists - /opt/fluo-2.0.0/lib/./log4j/log4j-core-2.19.0.jar
SUCCESS: Dependency exists - /opt/fluo-2.0.0/lib/./log4j/log4j-slf4j2-impl-2.19.0.jar
Done!

NOTE - The dependencies downloaded have been tested with some versions of Hadoop, Zookeeper, and Accumulo.
There is no guarantee they will work with all versions. Fluo chose to defer dependency resolution to as
late as possible in order to make it easier to resolve dependency conflicts.  If you run into a dependency
conflict in your environment, please consider bringing it up on the Fluo dev list.

/opt/fluo-2.0.0/lib/fetch.sh ahz -Daccumulo.version=2.1.0 -Dhadoop.version=3.3.6 -Dzookeeper.version=3.8.4

[INFO] Scanning for projects...
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/apache/accumulo/accumulo-core/2.1.0/accumulo-core-2.1.0.jar
[INFO] Copying hadoop-client-api-3.3.6.jar to /opt/fluo-2.0.0/lib/ahz/target/../hadoop-client-api-3.3.6.jar
[INFO] Copying netty-transport-native-epoll-4.1.105.Final.jar to /opt/fluo-2.0.0/lib/ahz/target/../netty-transport-native-epoll-4.1.105.Final.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.371 s

ls /opt/fluo-2.0.0/lib/ahz | wc -l

49

export HADOOP_HOME="${HADOOP_HOME:-/opt/hadoop-3.3.6}"

FLUO_JAVA_OPTS=("-Xms256m" "-Xmx256m")
JAVA_OPTS=("${FLUO_JAVA_OPTS[@]}")

# 模板末尾原为：setupClasspathFromSystem
# 修改为：
setupClasspathFromLib

setupClasspathFromLib(){
  CLASSPATH="$lib/*"
  CLASSPATH="$CLASSPATH:$lib/log4j/*"
  CLASSPATH="$CLASSPATH:$lib/ahz/*"
  export CLASSPATH
}

fluo classpath | tr ":" "\n" | head -6

/opt/fluo-2.0.0/lib/*
/opt/fluo-2.0.0/lib/log4j/*
/opt/fluo-2.0.0/lib/ahz/*

fluo.connection.zookeepers=localhost:2181/fluo

cat > /opt/fluo-2.0.0/conf/myapp.properties <<'EOF'
fluo.dfs.root=hdfs://localhost:9000/fluo
fluo.accumulo.instance=accumulo1
fluo.accumulo.user=root
fluo.accumulo.password=q1w2e3r4
fluo.accumulo.table=myapp2
EOF

fluo init -a myapp2 -p /opt/fluo-2.0.0/conf/myapp.properties

Initializing Fluo 'myapp2' application using /opt/fluo-2.0.0/conf/myapp.properties
Initialization is complete.

hdfs dfs -ls /

Found 2 items
drwx------   - root supergroup          0 2026-10-14 11:40 /accumulo
drwxr-xr-x   - root supergroup          0 2026-10-14 12:14 /fluo

accumulo shell -e "tables -np"

Loading configuration from /opt/accumulo-2.1.0/conf/accumulo-client.properties
accumulo.metadata
accumulo.replication
accumulo.root
myapp2

cat > /etc/systemd/system/fluo-oracle.service <<'EOF'
[Unit]
Description=Fluo Oracle for application myapp2
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
User=root
Environment=JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
Environment=PATH=/usr/lib/jvm/java-11-openjdk-amd64/bin:/opt/hadoop-3.3.6/bin:/opt/hadoop-3.3.6/sbin:/opt/apache-zookeeper-3.8.4-bin/bin:/opt/accumulo-2.1.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
ExecStart=/opt/fluo-2.0.0/bin/fluo oracle -a myapp2
SuccessExitStatus=143
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target
EOF

cat > /etc/systemd/system/fluo-worker.service <<'EOF'
[Unit]
Description=Fluo Worker for application myapp2
After=network-online.target fluo-oracle.service
Wants=network-online.target

[Service]
Type=simple
User=root
Environment=JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
Environment=PATH=/usr/lib/jvm/java-11-openjdk-amd64/bin:/opt/hadoop-3.3.6/bin:/opt/hadoop-3.3.6/sbin:/opt/apache-zookeeper-3.8.4-bin/bin:/opt/accumulo-2.1.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
ExecStart=/opt/fluo-2.0.0/bin/fluo worker -a myapp2
SuccessExitStatus=143
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload

systemctl enable fluo-oracle

Created symlink /etc/systemd/system/multi-user.target.wants/fluo-oracle.service → /etc/systemd/system/fluo-oracle.service.

systemctl enable fluo-worker

Created symlink /etc/systemd/system/multi-user.target.wants/fluo-worker.service → /etc/systemd/system/fluo-worker.service.

systemctl start fluo-oracle

systemctl start fluo-worker

systemctl is-active fluo-oracle

active

systemctl is-active fluo-worker

active

systemctl is-enabled fluo-oracle

enabled

systemctl is-enabled fluo-worker

enabled

journalctl -u fluo-oracle --no-pager -o cat | head -6

2026-10-14T12:20:00,712 [oracle.OracleServer] INFO : Leader ID = node1.fluo.example:6850
2026-10-14T12:20:00,721 [oracle.OracleServer] INFO : Listening 0.0.0.0/0.0.0.0:6850
2026-10-14T12:20:00,738 [oracle.OracleServer] INFO : Assumed leadership node1.fluo.example:6850
2026-10-14T12:20:00,739 [oracle.OracleServer] INFO : Current timestamp: 2

fluo status -a myapp2

RUNNING

fluo list

Fluo instance (localhost:2181/fluo) contains 1 application(s)

Application     Status     # Workers     # Oracles
-----------     ------     ---------     ---------
myapp2          RUNNING        1             1

jps -lv | grep FluoProgram

28964 org.apache.fluo.command.FluoProgram -Xms256m -Xmx256m -Dfluo.conn.props=/opt/fluo-2.0.0/conf/fluo-conn.properties
28952 org.apache.fluo.command.FluoProgram -Xms256m -Xmx256m -Dfluo.conn.props=/opt/fluo-2.0.0/conf/fluo-conn.properties

mkdir -p /opt/demo
cat > /opt/demo/FluoWriter.java <<'EOF'
import org.apache.fluo.api.client.FluoClient;
import org.apache.fluo.api.client.FluoFactory;
import org.apache.fluo.api.client.Transaction;
import org.apache.fluo.api.config.FluoConfiguration;
import org.apache.fluo.api.data.Column;

public class FluoWriter {
  public static void main(String[] args) throws Exception {
    FluoConfiguration config = new FluoConfiguration();
    config.setApplicationName("myapp2");
    config.setInstanceZookeepers("localhost:2181/fluo");
    config.setAccumuloInstance("accumulo1");
    config.setAccumuloZookeepers("localhost:2181");
    config.setAccumuloUser("root");
    config.setAccumuloPassword("q1w2e3r4");
    config.setAccumuloTable("myapp2");
    try (FluoClient client = FluoFactory.newClient(config)) {
      try (Transaction tx = client.newTransaction()) {
        tx.set("user:0001", new Column("info","name"), "Alice");
        tx.set("user:0001", new Column("info","age"), "30");
        tx.set("user:0002", new Column("info","name"), "Bob");
        tx.commit();
      }
    }
    System.out.println("3 rows committed");
  }
}
EOF

cd /opt/demo
javac -cp "/opt/fluo-2.0.0/lib/*" FluoWriter.java
ls -la FluoWriter.class

-rw-r--r-- 1 root root 2095 Oct 14 12:38 FluoWriter.class

java -cp "$(/opt/fluo-2.0.0/bin/fluo classpath):/opt/demo" FluoWriter

3 rows committed

fluo scan -a myapp2

user:0001 info age      30
user:0001 info name     Alice
user:0002 info name     Bob

2026-10-14T12:40:20,036 [init.Initialize] ERROR: It appears the directories [hdfs://localhost:9000/accumulo] were previously initialized.
2026-10-14T12:40:20,036 [init.Initialize] ERROR: Change the property instance.volumes to use different volumes.
2026-10-14T12:40:20,036 [init.Initialize] ERROR: The current value of instance.volumes is |hdfs://localhost:9000/accumulo|
2026-10-14T12:40:20,036 [init.Initialize] ERROR: FATAL: Problem during initialize
java.io.IOException: Filesystem is already initialized

systemctl stop fluo-worker

systemctl stop fluo-oracle

systemctl is-active fluo-worker

inactive

systemctl is-active fluo-oracle

inactive

systemctl disable fluo-oracle

Removed /etc/systemd/system/multi-user.target.wants/fluo-oracle.service.

systemctl disable fluo-worker

Removed /etc/systemd/system/multi-user.target.wants/fluo-worker.service.

fluo remove -a myapp2

Removing Fluo 'myapp2
Remove is complete.

rm /etc/systemd/system/fluo-oracle.service
rm /etc/systemd/system/fluo-worker.service
systemctl daemon-reload
rm -rf /opt/fluo-2.0.0

accumulo-service gc stop

Stopping gc on node1.fluo.example

accumulo-service monitor stop

Stopping monitor on node1.fluo.example

accumulo-service tserver stop

Stopping tserver on node1.fluo.example

accumulo-service manager stop

Stopping manager on node1.fluo.example

jps

12448 QuorumPeerMain
27077 SecondaryNameNode
26697 NameNode
26826 DataNode
30054 Jps

hdfs dfs -rm -r /accumulo
rm -rf /opt/accumulo-2.1.0

zkServer.sh stop

ZooKeeper JMX enabled by default
Using config: /opt/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED

rm -rf /opt/apache-zookeeper-3.8.4-bin /opt/zookeeper-data

stop-dfs.sh

Stopping namenodes on [localhost]
Stopping datanodes
Stopping secondary namenodes [node1.fluo.example]

rm -rf /opt/hadoop-3.3.6 /opt/hadoop-data
rm /etc/profile.d/bigdata.sh