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Fixes #38499 - Introduce SSH cert support #10571

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Fixes #38499 - Introduce SSH cert support #10571

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23 changes: 22 additions & 1 deletion app/views/unattended/provisioning_templates/snippet/remote_execution_ssh_keys.erb
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,9 @@ description: |

remote_execution_ssh_keys: public keys to be put in ~/.ssh/authorized_keys

remote_execution_ssh_ca_keys: public ssh CA keys to be put in
/etc/ssh/foreman-user-ca.pub

remote_execution_ssh_user: user for which remote_execution_ssh_keys will be
authorized

Expand All @@ -33,7 +36,7 @@ if [ -z "$PKG_MANAGER" ]; then
<%= indent(2) { snippet 'pkg_manager' } -%>
fi

<% if !host_param('remote_execution_ssh_keys').blank? %>
<% if host_param('remote_execution_ssh_keys').present? || host_param('remote_execution_ssh_ca_keys').present? %>
<% ssh_user = host_param('remote_execution_ssh_user') || 'root' %>

user_exists=false
Expand All @@ -46,6 +49,7 @@ fi
<% end -%>

if $user_exists; then
<% if host_param('remote_execution_ssh_keys').present? -%>
<% ssh_path = "~#{ssh_user}/.ssh" %>

mkdir -p <%= ssh_path %>
Expand All @@ -63,6 +67,23 @@ EOF

# Restore SELinux context with restorecon, if it's available:
command -v restorecon && restorecon -RvF <%= ssh_path %> || true
<% end -%>

<% user_ca_keys = host_param('remote_execution_ssh_ca_keys') %>
<% if user_ca_keys.present? -%>
mkdir -p /etc/ssh/sshd_config.d

<% user_ca_path = '/etc/ssh/foreman-user-ca.pub' %>
<%= save_to_file(user_ca_path, user_ca_keys.is_a?(String) ? user_ca_keys : user_ca_keys.join("\n")) %>

chmod 0644 <%= user_ca_path %>

<%= save_to_file('/etc/ssh/sshd_config.d/60-foreman-user-ca.conf', "TrustedUserCAKeys #{user_ca_path}") %>

command -v restorecon && restorecon -RvF /etc/ssh || true

systemctl try-restart <%= @host.operatingsystem&.family == 'Debian' ? 'ssh' : 'sshd' %>
<% end -%>

<% if ssh_user != 'root' && host_param('remote_execution_effective_user_method') == 'sudo' -%>
if [ ! -x "$(command -v sudo)" ]; then
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