Adding a new system_warnings config option to supress warnings

docsite/rst/intro_configuration.rst

@@ -477,6 +477,19 @@ playbook.  The default is the most logical: 'root'::
 
    sudo_user=root
 
+.. _system_warnings:
+
+system_warnings
+===============
+
+.. versionadded:: 1.6
+
+Allows disabling of warnings related to potential issues on the system running ansible itself (not on the managed hosts)::
+
+   system_warnings = True
+
+These may include warnings about 3rd party packages or other conditions that should be resolved if possible.
+
 .. _timeout:
 
 timeout

examples/ansible.cfg

@@ -91,6 +91,17 @@ ansible_managed = Ansible managed: {file} modified on %Y-%m-%d %H:%M:%S by {uid}
 # to revert the behavior to pre-1.3.
 #error_on_undefined_vars = False
 
+# by default (as of 1.6), Ansible may display warnings based on the configuration of the
+# system running ansible itself. This may include warnings about 3rd party packages or
+# other conditions that should be resolved if possible.
+# to disable these warnings, set the following value to False:
+#system_warnings = True
+
+# by default (as of 1.4), Ansible may display deprecation warnings for language
+# features that should no longer be used and will be removed in future versions.
+# to disable these warnings, set the following value to False:
+#deprecation_warnings = True
+
 # set plugin path directories here, separate with colons
 action_plugins     = /usr/share/ansible_plugins/action_plugins
 callback_plugins   = /usr/share/ansible_plugins/callback_plugins

lib/ansible/constants.py

@@ -150,6 +150,7 @@ ANSIBLE_NOCOWS                 = get_config(p, DEFAULTS, 'nocows', 'ANSIBLE_NOCO
 DISPLAY_SKIPPED_HOSTS          = get_config(p, DEFAULTS, 'display_skipped_hosts', 'DISPLAY_SKIPPED_HOSTS', True, boolean=True)
 DEFAULT_UNDEFINED_VAR_BEHAVIOR = get_config(p, DEFAULTS, 'error_on_undefined_vars', 'ANSIBLE_ERROR_ON_UNDEFINED_VARS', True, boolean=True)
 HOST_KEY_CHECKING              = get_config(p, DEFAULTS, 'host_key_checking',  'ANSIBLE_HOST_KEY_CHECKING',    True, boolean=True)
+SYSTEM_WARNINGS                = get_config(p, DEFAULTS, 'system_warnings', 'ANSIBLE_SYSTEM_WARNINGS', True, boolean=True)
 DEPRECATION_WARNINGS           = get_config(p, DEFAULTS, 'deprecation_warnings', 'ANSIBLE_DEPRECATION_WARNINGS', True, boolean=True)
 
 # CONNECTION RELATED

lib/ansible/utils/__init__.py

@@ -44,7 +44,6 @@ import getpass
 import sys
 import textwrap
 import json
-import warnings
 
 #import vault
 from vault import VaultLib
@@ -83,8 +82,11 @@ try:
             import keyczar.errors as key_errors
             from keyczar.keys import AesKey
         except PowmInsecureWarning:
-            display("The version of gmp you have installed has a known issue regarding timing vulnerabilities when used with pycrypto. " + \
-                    "If possible, you should update it (ie. yum update gmp).", color="purple", stderr=True)
+            system_warning(
+                "The version of gmp you have installed has a known issue regarding " + \
+                "timing vulnerabilities when used with pycrypto. " + \
+                "If possible, you should update it (ie. yum update gmp)."
+            )
             warnings.resetwarnings()
             warnings.simplefilter("ignore")
             import keyczar.errors as key_errors
@@ -1155,6 +1157,10 @@ def warning(msg):
         display(new_msg, color='bright purple', stderr=True)
         warns[new_msg] = 1
 
+def system_warning(msg):
+    if C.SYSTEM_WARNINGS:
+        warning(msg)
+
 def combine_vars(a, b):
 
     if C.DEFAULT_HASH_BEHAVIOUR == "merge":