Docker Deployment

August 9, 2024About 6 min

Docker Deployment

1. Environment Preparation

1.1 Install Docker

#Taking Ubuntu as an example. For other operating systems, you can search for installation methods on your own.
#step1: Install necessary system tools
sudo apt-get update
sudo apt-get -y install apt-transport-https ca-certificates curl software-properties-common
#step2: Install GPG certificate
curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
#step3: Add the software source
sudo add-apt-repository "deb [arch=amd64] https://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
#step4: Update and install Docker CE
sudo apt-get -y update
sudo apt-get -y install docker-ce
#step5: Set Docker to start automatically on boot
sudo systemctl enable docker
#step6: Verify if Docker is installed successfully
docker --version  #Display version information, indicating successful installation.

1.2 Install Docker Compose

#Installation command
curl -L "https://github.com/docker/compose/releases/download/v2.20.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose
ln -s  /usr/local/bin/docker-compose  /usr/bin/docker-compose
#Verify the installation
docker-compose --version  #Display version information, indicating successful installation.

2. Stand-Alone Deployment

This section demonstrates how to deploy a standalone Docker version of 1C1D.

2.1 Pull Image File

The Docker image of Apache IoTDB has been uploaded tohttps://hub.docker.com/r/apache/iotdb。

Taking obtaining version 1.3.2 as an example, pull the image command:

docker pull apache/iotdb:1.3.2-standalone

View image:

docker images

2.2 Create a Docker Bridge Network

docker network create --driver=bridge --subnet=172.18.0.0/16 --gateway=172.18.0.1  iotdb

2.3 Write the Docker-Compose YML File

Assume the IoTDB installation directory and the YML file are placed under the /docker-iotdb folder. The directory structure is as follows:docker-iotdb/iotdb, /docker-iotdb/docker-compose-standalone.yml

docker-iotdb：
├── iotdb  #Iotdb installation directory
│── docker-compose-standalone.yml #YML file for standalone Docker Composer

The complete content of docker-compose-standalone.yml is as follows:

version: "3"
services:
  iotdb-service:
    image: iotdb-enterprise:1.3.2.3-standalone #The image used
    hostname: iotdb
    container_name: iotdb
    restart: always       
    ports:
      - "6667:6667"
    environment:
      - cn_internal_address=iotdb
      - cn_internal_port=10710
      - cn_consensus_port=10720
      - cn_seed_config_node=iotdb:10710
      - dn_rpc_address=iotdb
      - dn_internal_address=iotdb
      - dn_rpc_port=6667
      - dn_internal_port=10730
      - dn_mpp_data_exchange_port=10740
      - dn_schema_region_consensus_port=10750
      - dn_data_region_consensus_port=10760
      - dn_seed_config_node=iotdb:10710
    privileged: true
    volumes:
        - ./iotdb/activation:/iotdb/activation
        - ./iotdb/data:/iotdb/data
        - ./iotdb/logs:/iotdb/logs
        - /usr/sbin/dmidecode:/usr/sbin/dmidecode:ro
    networks:
      iotdb:
        ipv4_address: 172.18.0.6
networks:
  iotdb:
    external: true

2.4 First Startup

Use the following command to start:

cd　/docker-iotdb
docker-compose -f docker-compose-standalone.yml up

2.5 Verify the Deployment

Viewing the log, the following words indicate successful startup

docker logs -f iotdb-datanode #View log command
2024-07-21 08:22:38,457 [main] INFO  o.a.i.db.service.DataNode:227 - Congratulations, IoTDB DataNode is set up successfully. Now, enjoy yourself!

Enter the container to view the service running status and activation information

View the launched container

docker ps

Enter the container, log in to the database through CLI, and use the show cluster command to view the service status and activation status

docker exec -it iotdb   /bin/bash        #Entering the container
./start-cli.sh -sql_dialect table -h iotdb                  #Log in to the database
IoTDB> show cluster                      #View status

You can see that all services are running and the activation status shows as activated.

2.6 Map the `/conf` Directory (Optional)

If you want to modify configuration files directly on the physical machine, you can map the /conf folder from the container. Follow these steps:

Step 1: Copy the /conf directory from the container to /docker-iotdb/iotdb/conf:

docker cp iotdb:/iotdb/conf /docker-iotdb/iotdb/conf

Step 2: Add the mapping in docker-compose-standalone.yml:

    volumes:
        - ./iotdb/conf:/iotdb/conf   #Add mapping for this/conf folder
        - ./iotdb/data:/iotdb/data
        - ./iotdb/logs:/iotdb/logs

Step 3: Restart IoTDB:

docker-compose  -f docker-compose-standalone.yml  up  -d

3. Cluster Deployment

This section describes how to manually deploy a cluster consisting of 3 ConfigNodes and 3 DataNodes, commonly referred to as a 3C3D cluster.

Note: The cluster version currently only supports host and overlay networks, and does not support bridge networks.

Below, we demonstrate how to deploy a 3C3D cluster using the host network as an example.

3.1 Set Hostnames

Assume there are 3 Linux servers with the following IP addresses and service roles:

Node IP	Hostname	Services
192.168.1.3	iotdb-1	ConfigNode, DataNode
192.168.1.4	iotdb-2	ConfigNode, DataNode
192.168.1.5	iotdb-3	ConfigNode, DataNode

On each of the 3 machines, configure the hostnames by editing the /etc/hosts file. Use the following commands:

echo "192.168.1.3  iotdb-1"  >> /etc/hosts
echo "192.168.1.4  iotdb-2"  >> /etc/hosts
echo "192.168.1.5  iotdb-3"  >> /etc/hosts

3.2 Load the Image File

The Docker image of Apache IoTDB has been uploaded tohttps://hub.docker.com/r/apache/iotdb。

Pull IoTDB images from three servers separately, taking version 1.3.2 as an example. The pull image command is:

docker pull apache/iotdb:1.3.2-standalone

View image:

docker images

3.3. Write the Docker-Compose YML Files

Here, we assume the IoTDB installation directory and YML files are placed under the /docker-iotdb folder. The directory structure is as follows:

docker-iotdb：
├── confignode.yml #ConfigNode YML file 
├── datanode.yml   #DataNode YML file  
└── iotdb          #IoTDB installation directory

On each server, create two YML files: confignode.yml and datanode.yml. Examples are provided below:

confignode.yml：

#confignode.yml
version: "3"
services:
  iotdb-confignode:
    image: iotdb-enterprise:1.3.2.3-standalone #The image used
    hostname: iotdb-1|iotdb-2|iotdb-3 #Choose from three options based on the actual situation
    container_name: iotdb-confignode
    command: ["bash", "-c", "entrypoint.sh confignode"]
    restart: always
    environment:
      - cn_internal_address=iotdb-1|iotdb-2|iotdb-3 #Choose from three options based on the actual situation
      - cn_internal_port=10710
      - cn_consensus_port=10720
      - cn_seed_config_node=iotdb-1:10710   #The default first node is the seed node
      - schema_replication_factor=3         #Number of metadata copies
      - data_replication_factor=2           #Number of data replicas
    privileged: true
    volumes:
      - ./iotdb/activation:/iotdb/activation
      - ./iotdb/data:/iotdb/data
      - ./iotdb/logs:/iotdb/logs
      - /usr/sbin/dmidecode:/usr/sbin/dmidecode:ro
    network_mode: "host"    #Using the host network

datanode.yml：

#datanode.yml
version: "3"
services:
  iotdb-datanode:
    image: iotdb-enterprise:1.3.2.3-standalone #The image used
    hostname: iotdb-1|iotdb-2|iotdb-3 #Choose from three options based on the actual situation
    container_name: iotdb-datanode
    command: ["bash", "-c", "entrypoint.sh datanode"]
    restart: always
    ports:
      - "6667:6667"
    privileged: true
    environment:
      - dn_rpc_address=iotdb-1|iotdb-2|iotdb-3 #Choose from three options based on the actual situation
      - dn_internal_address=iotdb-1|iotdb-2|iotdb-3 #Choose from three options based on the actual situation
      - dn_seed_config_node=iotdb-1:10710      #The default first node is the seed node
      - dn_rpc_port=6667
      - dn_internal_port=10730
      - dn_mpp_data_exchange_port=10740
      - dn_schema_region_consensus_port=10750
      - dn_data_region_consensus_port=10760
      - schema_replication_factor=3         #Number of metadata copies
      - data_replication_factor=2           #Number of data replicas
    volumes:
      - ./iotdb/activation:/iotdb/activation
      - ./iotdb/data:/iotdb/data
      - ./iotdb/logs:/iotdb/logs
      - /usr/sbin/dmidecode:/usr/sbin/dmidecode:ro
    network_mode: "host"   #Using the host network

3.4 Start ConfigNode for the First Time

Start the ConfigNode on all 3 servers. Note the startup order: Start iotdb-1 first, followed by iotdb-2 and iotdb-3.

Run the following command on each server:

cd　/docker-iotdb
docker-compose -f confignode.yml up  -d #Background startup

3.5 Start DataNode

Start the DataNode on all 3 servers:

cd /docker-iotdb
docker-compose  -f  datanode.yml  up -d #Background startup

3.6 Verify Deployment

Check the logs: If you see the following message, the DataNode has started successfully.

docker logs -f iotdb-datanode #View log command
2024-07-21 09:40:58,120 [main] INFO  o.a.i.db.service.DataNode:227 - Congratulations, IoTDB DataNode is set up successfully. Now, enjoy yourself!

Enter the container and check the service status:
View the launched container
```
docker ps
```
Enter any container, log in to the database via CLI, and use the show cluster command to check the service status:
```
docker exec -it iotdb-datanode /bin/bash #Entering the container
./start-cli.sh -sql_dialect table -h iotdb-1                #Log in to the database
IoTDB> show cluster                      #View status
```
If all services are in the running state, the IoTDB deployment is successful.

3.7 Map the `/conf` Directory (Optional)

If you want to modify configuration files directly on the physical machine, you can map the /conf folder from the container. Follow these steps:

Step 1: Copy the /conf directory from the container to /docker-iotdb/iotdb/conf on all 3 servers:

docker cp iotdb-confignode:/iotdb/conf /docker-iotdb/iotdb/conf
or
docker cp iotdb-datanode:/iotdb/conf   /docker-iotdb/iotdb/conf

Step 2: Add the /conf directory mapping in both confignode.yml and datanode.yml on all 3 servers:

#confignode.yml
    volumes:
      - ./iotdb/conf:/iotdb/conf  #Add mapping for this /conf folder
      - ./iotdb/data:/iotdb/data
      - ./iotdb/logs:/iotdb/logs

#datanode.yml
    volumes:
      - ./iotdb/conf:/iotdb/conf   #Add mapping for this /conf folder
      - ./iotdb/data:/iotdb/data
      - ./iotdb/logs:/iotdb/logs

Step 3: Restart IoTDB on all 3 servers:

cd /docker-iotdb
docker-compose  -f confignode.yml  up  -d
docker-compose  -f datanode.yml    up  -d