4.5.6. 要求ヘッダーを使用した Apache 認証設定の例

Apache 設定を作成します。以下のテンプレートを使用して必要な設定および値を指定します。

LoadModule request_module modules/mod_request.so
LoadModule auth_gssapi_module modules/mod_auth_gssapi.so
# Some Apache configurations might require these modules.
# LoadModule auth_form_module modules/mod_auth_form.so
# LoadModule session_module modules/mod_session.so

# Nothing needs to be served over HTTP.  This virtual host simply redirects to
# HTTPS.
<VirtualHost *:80>
  DocumentRoot /var/www/html
  RewriteEngine              On
  RewriteRule     ^(.*)$     https://%{HTTP_HOST}$1 [R,L]
</VirtualHost>

<VirtualHost *:443>
  # This needs to match the certificates you generated.  See the CN and X509v3
  # Subject Alternative Name in the output of:
  # openssl x509 -text -in /etc/pki/tls/certs/localhost.crt
  ServerName www.example.com

  DocumentRoot /var/www/html
  SSLEngine on
  SSLCertificateFile /etc/pki/tls/certs/localhost.crt
  SSLCertificateKeyFile /etc/pki/tls/private/localhost.key
  SSLCACertificateFile /etc/pki/CA/certs/ca.crt

  SSLProxyEngine on
  SSLProxyCACertificateFile /etc/pki/CA/certs/ca.crt
  # It is critical to enforce client certificates. Otherwise, requests can
  # spoof the X-Remote-User header by accessing the /oauth/authorize endpoint
  # directly.
  SSLProxyMachineCertificateFile /etc/pki/tls/certs/authproxy.pem

  # To use the challenging-proxy, an X-Csrf-Token must be present.
  RewriteCond %{REQUEST_URI} ^/challenging-proxy
  RewriteCond %{HTTP:X-Csrf-Token} ^$ [NC]
  RewriteRule ^.* - [F,L]

  <Location /challenging-proxy/oauth/authorize>
      # Insert your backend server name/ip here.
      ProxyPass https://<namespace_route>/oauth/authorize
      AuthName "SSO Login"
      # For Kerberos
      AuthType GSSAPI
      Require valid-user
      RequestHeader set X-Remote-User %{REMOTE_USER}s

      GssapiCredStore keytab:/etc/httpd/protected/auth-proxy.keytab
      # Enable the following if you want to allow users to fallback
      # to password based authentication when they do not have a client
      # configured to perform kerberos authentication.
      GssapiBasicAuth On

      # For ldap:
      # AuthBasicProvider ldap
      # AuthLDAPURL "ldap://ldap.example.com:389/ou=People,dc=my-domain,dc=com?uid?sub?(objectClass=*)"
    </Location>

    <Location /login-proxy/oauth/authorize>
    # Insert your backend server name/ip here.
    ProxyPass https://<namespace_route>/oauth/authorize

      AuthName "SSO Login"
      AuthType GSSAPI
      Require valid-user
      RequestHeader set X-Remote-User %{REMOTE_USER}s env=REMOTE_USER

      GssapiCredStore keytab:/etc/httpd/protected/auth-proxy.keytab
      # Enable the following if you want to allow users to fallback
      # to password based authentication when they do not have a client
      # configured to perform kerberos authentication.
      GssapiBasicAuth On

      ErrorDocument 401 /login.html
    </Location>

</VirtualHost>

RequestHeader unset X-Remote-User

カスタムリソース (CR) の identityProviders スタンザを更新します。

identityProviders:
  - name: requestheaderidp
    type: RequestHeader
    requestHeader:
      challengeURL: "https://<namespace_route>/challenging-proxy/oauth/authorize?${query}"
      loginURL: "https://<namespace_route>/login-proxy/oauth/authorize?${query}"
      ca:
        name: ca-config-map
        clientCommonNames:
        - my-auth-proxy
        headers:
        - X-Remote-User

設定を確認します。