.\"	$OpenBSD: mdoc.template,v 1.15 2014/03/31 00:09:54 dlg Exp $
.\"
.\" Copyright (c) 2017, 2018, 2019 Reyk Floeter <reyk@openbsd.org>
.\"
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.Dd $Mdocdate$
.Dt CLOUD-AGENT 8
.Os
.Sh NAME
.Nm cloud-agent
.Nd cloud provisioning for OpenBSD VMs
.Sh SYNOPSIS
.Nm cloud-agent
.Op Fl nuv
.Op Fl c Ar cloud Ns Op , Ns Ar cloud Ns ...
.Op Fl p Ar length
.Op Fl r Ar rootdisk
.Op Fl t Ar timeout
.Op Fl U Ar username
.Ar interface
.Sh DESCRIPTION
The
.Nm
program manages the OpenBSD provisioning and VM interaction in cloud
environments.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl c Ar cloud Ns Op , Ns Ar cloud Ns ...
Probe a list of cloud stacks for provisioning in the specified order.
If this option is not specified,
.Nm
tries to detect the environment and possible cloud stacks automatically.
Supported
.Ar cloud
stacks are:
.Pp
.Bl -tag -width opennebula -offset indent -compact
.It Ic azure
Microsoft Azure
.It Ic cloudinit
Generic cloud-init
.It Ic ec2
Amazon AWS EC2
.It Ic opennebula
OpenNebula
.It Ic openstack
OpenStack
.El
.It Fl p Ar length
Generate and set a random password for the default user.
The password will be written in its plain form into the
.Pa ~/.ssh/authorized_keys
file.
This allows to use the
.Xr doas 1
command to gain root privileges.
The minimum
.Ar length
is 8 characters and the default is an empty password.
.It Fl n
Do not configure the system and skip the provisioning step.
.It Fl t Ar timeout
Change the HTTP timeout.
The default is 3 seconds.
.It Fl U Ar username
Change the default user.
The default is
.Dq ec2-user
on AWS,
.Dq azure-user
on Azure, and
.Dq puffy
everywhere else.
The default user is used when it is not obtained from the cloud
configuration.
Using
.Dq root
is supported, but not recommended.
.It Fl r Ar rootdisk
Automatically grow the last
.Ox
FFS partition of the root disk to use all the available space.
.It Fl u
Deprovision and unconfigure the system.
This deletes keys, passwords, and logs files without asking for permission.
.It Fl v
Produce more verbose output.
.El
.Pp
Enable
.Nm
in the
.Xr hostname.if 5
of the VM's primary networking interface and automatically the last
partition of the root disk:
.Bd -literal -offset indent
# cat /etc/hostname.hvn0
dhcp
!/usr/local/libexec/cloud-agent -r sd0 "\e$if"
.Ed
.Sh FILES
.Bl -tag -width "/usr/local/libexec/cloud-agentX" -compact
.It Pa ~/.ssh/authorized_keys
The location of the agent-configured SSH public keys and optional password.
.It Pa /usr/local/libexec/cloud-agent
The agent itself.
.It Pa /usr/local/bin/cms
The CMS binary that is used to decrypt messages from the Azure fabric.
.It Pa /var/db/cloud-instance
The instance ID as reported by the cloud.
.Nm
reprovisions the system when the value has changed.
.El
.Sh SEE ALSO
.Xr meta-data 8 ,
.Xr vmd 8
.Sh AUTHORS
.An Reyk Floeter Aq Mt reyk@openbsd.org
.\" .Sh CAVEATS
.\" .Sh BUGS