81 lines
2.5 KiB
Markdown
81 lines
2.5 KiB
Markdown
# Basic Installation
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Linux systems are installed using PXE and Kickstart. The Kickstart
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configuration is auto-generated base on the configuration stored in sysdb/bob.
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When PXE boot is not an option, e.g. in restricted networks, it is possible to start iPXE from a USB stick or other media.
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The general process for a installation is:
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1. Register and configure the system with sysdb
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2. Tell sysdb to perform an installation on the next boot
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3. Reboot the system and trigger a PXE boot (usually by pressing F12 during
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POST)
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The default way to interact with sysdb is to use [bob](https://git.psi.ch/linux-infra/bob). `bob` is already set up on `lxsup.psi.ch` for general use.
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Altenatively you many have on your workstation a local copy of `bob`. This can be done by installing the RPM from the pli-misc repository - https://repos.psi.ch/rhel8/latest/pli-misc/ or by installing the Python package manually.
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You might need to set a `PSI_BOB_USER` environment variable (`export PSI_BOB_USER=<you-name-it>`) or use the option `--user` if your local user is different from the one on sysdb.
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## Sysdb Configuration
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Register node:
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```bash
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bob node add $FQDN $ENV netboot
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```
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To be able to PXE boot we need to configure at least one MAC address for the new node:
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```bash
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bob node add-mac $FQDN 00:50:56:aa:fe:9b
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```
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Finally we need to configure the installer to use, and the Puppet-related parameters:
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```bash
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bob node set-attr $FQDN ipxe_installer=rhel8install
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bob node set-attr $FQDN puppet_role=role::server
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```
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and optional:
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```bash
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# static IP address (options: static, dhcp)
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bob node set-attr $FQDN network=static
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bob node set-attr $FQDN puppet_group=cluster
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bob node set-attr $FQDN puppet_subgroup=compute
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bob node set-attr $FQDN puppet_env=prod
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```
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Finally ensure that the node is set to `netboot`:
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```bash
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bob node netboot $FQDN
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```
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### Example
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Minimal example:
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```bash
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bob node add lx-test-02.psi.ch lx netboot
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bob node add-mac lx-test-02 00:50:56:9d:19:76
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bob node set-attr lx-test-02.psi.ch ipxe_installer=rhel8install puppet_role=role::server
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bob node netboot lx-test-02.psi.ch
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# show the configuration
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bob node list -v lx-test-02
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```
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### Special Settings
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#### Custom Kernel Commandline Arguments
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For custom kernel commandline arguments for the installer (e.g. to provide drivers) the sysdb attribute `kernel_cmdline` can be used:
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```bash
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bob node set-attr lx-test-02.psi.ch kernel_cmdline=inst.dd=https://linuxsoft.cern.ch/elrepo/dud/el8/x86_64/dd-megaraid_sas-07.725.01.00-1.el8_9.elrepo.iso
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```
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#### Custom Partitioning
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Please check out the [Partitioning page](partitioning).
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