Set up hosts for the ThoughtSpot cluster
Set up hosts for the ThoughtSpot cluster on your chosen platform. Please refer to the relevant deployment sections in our documentation for the exact specification for the hosts: CPU, memory, and disks.
- ThoughtSpot-certified hardware appliance manufactured by DELL
- ThoughtSpot-certified hardware appliance manufactured by SMC
- Amazon Web Services (AWS) EC2
- Google Cloud Platform (GCP)
- VMware
- Microsoft Azure
Partition the hosts
Ensure that all ThoughtSpot hosts have the following partitions on the root drive.
Note that the size of the root drive on appliances is limited to 200GB; the partition requirements are therefore somewhat different when compared to the other environments.
| Platform | Partition | Drive type | Description | Minimum size |
|---|---|---|---|---|
| Hosts in AWS, GCP, Azure, and VMWare | OS partition | SSD (root drive) | Root partition for OS, /tmp |
100GB Allocate at least 50GB to /tmp |
| Export partition | SSD (root drive) | Stores ThoughtSpot objects, hdfs logs, service logs, and so on | 200GB | |
| Hosts on ThoughtSpot-certified hardware appliances | OS partition | SSD (root drive) | Root partition for OS, /tmp |
80GB Allocate at least 50GB to /tmp |
| Export partition | SSD (root drive) | Stores ThoughtSpot objects, hdfs logs, service logs, and so on | 100GB |
Install RHEL on hosts
ThoughtSpot is certified with RHEL versions 7.7 and 7.8; we do not support other versions of RHEL, including 8 and 8.1. Install RHEL version 7.7 or 7.8, and ensure that your linux kernel version is 3.10.0-1127.19.1.
Linux kernel version
Your Linux kernel must be on version 3.10.0-1127.19.1. RHEL 7.7 and 7.8 used to come with a Linux kernel of version 3.10.x, which has a bug that causes nodes to reboot unexpectedly. The default Linux kernel version for RHEL 7.7 and 7.8 is now 3.10.0-1127.19.1. However, you may have an older RHEL 7.7 or 7.8, with a Linux kernel of version 3.10.x. You must upgrade to 3.10.0-1127.19.1. If you have trouble upgrading your Linux kernel to version 3.10.0-1127.19.1, contact ThoughtSpot Support. This is a requirement for all platforms: appliance, cloud, and VMware.
Enable the hosts to download RHEL packages
Repositories
- Yum repositories: you must enable the following Yum repositories in your cluster:
epel,nux-desktop,pgdg95,rhel,rhel-optional,rhel-extras.
- Python repository: for Python, ensure the machine is able to reach the
PyPIrepository located at https://pypi.python.org/.
- R repository: for R, ensure the machine is able to reach the
CRANrepository located at https://cran.rstudio.com/.
Make sure that you can download RHEL packages to all hosts, either from the official package repositories, or from a mirror repository owned and managed by your organization.
If you cannot access the RHEL repositories, there is no mirror repository in your organization, or you are unable to access Yum, Python, or R repositories, please contact ThoughtSpot Support.
Official package repositories
If the hosts of your ThoughtSpot cluster can access external repositories, either directly or through a proxy, your cluster is online. You can then proceed to download Yum, Python, and R package repositories.
Internal mirror repository
If the hosts of your ThoughtSpot cluster have access to an internal repository that mirrors the public repositories, copy the Yum , Python, and R package repositories to your hosts.
Enable an Ansible Control Server
Configure an Ansible Control Server, on a separate host, to run the Ansible playbook that ThoughtSpot supplies. You must install both rsync and Ansible on the Ansible Control Server host.
Disable SELinux or run it in permissive mode
ThoughtSpot does not support policies that enforce SELinux. We recommend that you disable SELinux, or run it in permissive mode.
Ensure tmp has permission 777
The /tmp directory must have the 777 permission.
Remove Defaults requiretty from /etc/sudoers
The /etc/sudoers file must not have the Defaults requiretty line. This line can cause cluster creation to fail.