Deploy DingoDB Cluster By Ansible
DingoDB is a real-time Hybrid Serving & Analytical Processing (HSAP) Database. It can execute high-frequency queries and upsert, interactive analysis, multi-dimensional analysis in extremely low latency. To achieve high concurrency and high throughput, DingoDB uses an elastic distributed deployment mode.
In order to simplify the deployment, this project introduces the deployment of DingoDB using ansible.
1. Cluster Mode
The roles in the cluster are mainly divided into:
Coordinator
Coordinator act as the master of the cluster. It is responsible for the management and scheduler of data replications of DingoDB cluster.
Store
Store act as the storage of the cluster, It is responsible for managing the entire storage
Executor
Executor act as the worker of the cluster. It is responsible for executing the physical execution plan of SQL to scan and compute the data.
Driver-MySQL/Driver-Dingo
DingoDB uses JDBC driver to perform table-level data operations, such as create, insert, update, delete, etc. Driver Proxy act as the proxy of JDBC Connection.
1.1 Installation prerequisites
Version of OS
CentOS 8.x.
Repository of Yum works fine
The repository will be used to install basic tools needed by the cluster, such as
python3
.Ansible Host
A host installed with
ansible
is required to distribute cluster configuration and related software modules about DingoDB. This machine can also be replaced by one node in DingoDB cluster such asStore-1
orCoordinator-1
.
1.2 Deployment Guidelines
In the cluster mode, ansible
is selected as the deployment tools. You can use this guide to install a DingoDB cluster.
1.2.1 Install Steps
1.2.2 Installation Notes
define cluster configuration
Edit the configuration inventory/hosts, use the real host, user, password to replace the item.
[all:vars]
ansible_connection=ssh
ansible_ssh_user=root
ansible_ssh_pass=123456
ansible_python_interpreter=/usr/bin/python3
[coordinator]
172.20.3.201
172.20.3.200
172.20.3.202
[store]
# 172.20.3.201
# 172.20.3.201 store_num=2
# 172.20.3.201 store_num=2 disk='/home/sd1 /home/sd2'
172.20.3.201
172.20.3.200
172.20.3.202
[all_nodes:children]
coordinator
store
[executor]
172.20.3.201
[executor_nodes:children]
executor
Check Python3 is installed
Check Python3 is installed or not on DingoDB cluster, if Python3
is not installed, We can use ansible to install Python3
using such command.
ansible all_nodes --become -m raw -a "yum install -y python3" -i ansible_hosts
Start to install
Copy artifacts
1. artifacts/jdk-8u171-linux-x64.tar.gz
2. artifacts/dingo.zip
3. artifacts/dingo-store.tar.gz
Executor ansible script
ansible-playbook playbook.yml