14826: API server looks in CA cert path that works on CentOS

API server makes callbacks to remote clusters to validate remote
users, ensure it has the right system CA cert path to validate TLS
certs of remote clusters.

Arvados-DCO-1.1-Signed-off-by: Peter Amstutz <pamstutz@veritasgenetics.com>

diff --git a/services/api/app/models/api_client_authorization.rb b/services/api/app/models/api_client_authorization.rb
index 39253e1036ba9a52b2070f9e0a7d4043fecb2d43..800439248673cf6b2960bc0a22848c6f97c02f55 100644 (file)
--- a/services/api/app/models/api_client_authorization.rb
+++ b/services/api/app/models/api_client_authorization.rb
@@ -155,6 +155,12 @@ class ApiClientAuthorization < ArvadosModel
         clnt = HTTPClient.new
         if Rails.configuration.sso_insecure
           clnt.ssl_config.verify_mode = OpenSSL::SSL::VERIFY_NONE
+        else
+          # Use system CA certificates
+          ["/etc/ssl/certs/ca-certificates.crt",
+           "/etc/pki/tls/certs/ca-bundle.crt"]
+            .select { |ca_path| File.readable?(ca_path) }
+            .each { |ca_path| @api_client.ssl_config.add_trust_ca(ca_path) }
         end
         remote_user = SafeJSON.load(
           clnt.get_content('https://' + host + '/arvados/v1/users/current',