Deploying openLooKeng Automatically
In addition to the manual deployment of openLooKeng Sever, you can follow below guide to complete deployment faster and easier. The script is friendly to most of linux OS. However, to Ubuntu, you need to manually install the following dependencies:
sshpass1.06 or above
Deploying openLooKeng on a Single Node
Execute below command can help you download the necessary packages and deploy openLooKeng server in one-click:
bash <(wget -qO- https://download.openlookeng.io/install.sh)
wget -O - https://download.openlookeng.io/install.sh|bash
Normally, you don't need to do any thing, except for the installation to complete. It will automatically start the service.
Execute below command to stop openLooKeng service.:
Execute below command to start openLooKeng Command Line client:
Deploying openLooKeng to Cluster online
Execute below command to install openLooKeng cluster:
bash <(wget -qO- https://download.openlookeng.io/install.sh) -m
bash <(wget -qO- https://download.openlookeng.io/install.sh) --multi-node
First of all, this command will download scripts and packages required by openLooKeng service. After the download is completed, it will check whether the dependent packages
sshpass are installed. If not, those dependencies will be installed automatically.
Besides, jdk version is required to be greater than 1.8.0_151. If not, jdk1.8.0_201 will be installed in the cluster. It is recommended to manually install these dependencies before installing openLooKeng service.
Secondly, the script will download openLooKeng-server tarball and copy that tarball to all the nodes in the cluster. Then install the openLooKeng-server by using this tarball.
Lastly, the script will setup openLooKeng server with the standard configurations, includes configurations for JVM, Node and also for build-in catalogs like
By design, the script will check if there are existing configuration under directory:
If this file is missing, the install script will ask user to input the nodes information.
Optionally, you can add user
openlkadmin and create a file
cluster_node_info, you should list appropriate values for your cluster.
Please refer to below template, and replace the variables denoted with brackets <> with actual values.
The general configurations for openLooKeng's coordinator, workers are taken from the configuration file
/home/openlkadmin/.openlkadmin/cluster_config_info and configurations for connectors are taken from the directory
/home/openlkadmin/.openlkadmin/catalog respectively. If these directories or any required configuration files are absent during the deploy script running, default configuration files will be generated
automatically and deployed to all nodes.
Which means, alternatively, you can add those configuration files before running this deploy script, if you want to customized the deployment.
If above process all succeed, the deploy script will automatically start the openLooKeng Service for you. Execute below command to stop openLooKeng service.:
Execute below command to start openLooKeng Command Line client.:
If you are going to deploy openLooKeng on a big cluster with lots of nodes, instead of inputting the nodes’ IP address one by one. It is better to prepare a file containing all nodes’ IP address then pass this file as parameter to the installation script. Here is the command:
bash <(wget -qO- https://download.openlookeng.io/install.sh) -f <cluster_node_info_path>
bash <(wget -qO- https://download.openlookeng.io/install.sh) --file <cluster_node_info_path>
For more help message,execute below command to deploy single node cluster:
bash <(wget -qO- https://download.openlookeng.io/install.sh) -h
bash <(wget -qO- https://download.openlookeng.io/install.sh) --help
Upgrade openLooKeng Service
Execute below command to Upgrade openLooKeng Service:
bash <(wget -qO- https://download.openlookeng.io/install.sh) -u <version>
This command will upgrade the current openLooKeng Service to target version, preserving all the existing configurations on current cluster. Execute below command to list all available versions:
bash <(wget -qO- https://download.openlookeng.io/install.sh) -l
bash <(wget -qO- https://download.openlookeng.io/install.sh) --list
Deploying Configuration to openLooKeng Cluster
Modify configuration file (/home/openlkadmin/.openlkadmin/cluster_config_info) and then execute below command to deploy the configurations to openLooKeng cluster:
Note, if you want to add more configrations or customize the configurations, you can add properties to the templates into file located at
The property format has to be key=<value>, where value is wrapped with '<' and '>', which means it it a dynamic value. For example:
Next, you need to add the actual value into configuration file
/home/openlkadmin/.openlkadmin/cluster_config_info. For example:
Uninstall openLooKeng Service
It is very easy and straight forward to uninstall openLooKeng Service, simply run below command:
This will uninstall openLooKeng Service by removing directory
/opt/openlookeng and all files inside it. However, the
openlkadmin user and all the configuration files under
/home/openlkadmin/ will not be removed. If you wan to delete user and configuration files, you need to run the below command:
bash /opt/openlookeng/bin/uninstall.sh --all
Deploying openLooKeng to Cluster offline
If you can’t access the download URL from the machine where you want to install openLooKeng, you can download all required files beforehand and install offline.
https://download.openlookeng.io/auto-install/openlookeng.tar.gzand extract its content to
/opt/openlookeng/resourceand save openLooKeng binary files under it:
<version>refers to the version being installed, e.g.
Also save third party dependencies under
/opt/openlookeng/resource. That is, download all files from either
https://download.openlookeng.io/auto-install/third-resource/aarch64/, depending on the machine’s architecture. This should include 1
OpenJDKfile and 2
If you plan to perform multi-node installation, and some nodes in the cluster have a different architecture type from the current machine, then also download the
OpenJDKfile for the other architecture, and save it under
aarch64, corresponding to the other architecture.
After all resources are available, execute below command to deploy single node cluster:
Execute below command to deploy multi-node cluster:
bash /opt/openlookeng/bin/install_offline.sh -m
bash /opt/openlookeng/bin/install_offline.sh --multi-node
execute the below command to get help on all available options:
bash /opt/openlookeng/bin/install_offline.sh --help
Adding Node to Cluster
If you want to add node to make the cluster bigger,execute the below command:
bash /opt/openlookeng/bin/add_cluster_node.sh -n
bash /opt/openlookeng/bin/add_cluster_node.sh --node
bash /opt/openlookeng/bin/add_cluster_node.sh -f <add_nodes_file_path>
bash /opt/openlookeng/bin/add_cluster_node.sh --file <add_nodes_file_path>
If there are multiple nodes, separated by commas(,).
Removing Node to Cluster
If you want to remove node to make the cluster smaller,execute the below command:
bash /opt/openlookeng/bin/remove_cluster_node.sh -n
bash /opt/openlookeng/bin/remove_cluster_node.sh --node
bash /opt/openlookeng/bin/remove_cluster_node.sh -f <remove_nodes_file_path>
bash /opt/openlookeng/bin/remove_cluster_node.sh --file <remove_nodes_file_path>
If there are multiple nodes, separate them with commas(,).