System requirements for the seed node¶
The seed node is only necessary to deploy the management cluster. When the bootstrap is complete, the bootstrap node can be discarded and added back to the MOSK cluster as a node of any type.
The minimum reference system requirements for a baremetal-based bootstrap seed node are as follow:
Basic Ubuntu 18.04 server with the following configuration:
Kernel of version 4.15.0-76.86 or later
8 GB of RAM
10 GB of free disk space for the bootstrap cluster cache
No DHCP or TFTP servers on any NIC networks
Routable access IPMI network for the hardware servers.
Internet access for downloading of all required artifacts
If you use a firewall or proxy, make sure that the bootstrap, management, and regional clusters have access to the following IP ranges and domain names:
mirror.mirantis.com and repos.mirantis.com for packages
binary.mirantis.com for binaries and Helm charts
mirantis.azurecr.io for Docker images
mcc-metrics-prod-ns.servicebus.windows.net:9093 for Telemetry (port 443 if proxy is enabled)
mirantis.my.salesforce.com for Salesforce alerts
Access to Salesforce is required from any Container Cloud cluster type.
If any additional Alertmanager notification receiver is enabled, for example, Slack, its endpoint must also be accessible from the cluster.