diff options
| -rwxr-xr-x | playbooks/common/openshift-master/library/modify_yaml.py | 95 | ||||
| -rw-r--r-- | playbooks/common/openshift-master/scaleup.yml | 6 |
2 files changed, 98 insertions, 3 deletions
diff --git a/playbooks/common/openshift-master/library/modify_yaml.py b/playbooks/common/openshift-master/library/modify_yaml.py new file mode 100755 index 000000000..a4be10ca3 --- /dev/null +++ b/playbooks/common/openshift-master/library/modify_yaml.py @@ -0,0 +1,95 @@ +#!/usr/bin/python +# -*- coding: utf-8 -*- +# vim: expandtab:tabstop=4:shiftwidth=4 + +''' modify_yaml ansible module ''' + +import yaml + +DOCUMENTATION = ''' +--- +module: modify_yaml +short_description: Modify yaml key value pairs +author: Andrew Butcher +requirements: [ ] +''' +EXAMPLES = ''' +- modify_yaml: + dest: /etc/origin/master/master-config.yaml + yaml_key: 'kubernetesMasterConfig.masterCount' + yaml_value: 2 +''' + +def main(): + ''' Modify key (supplied in jinja2 dot notation) in yaml file, setting + the key to the desired value. + ''' + + # disabling pylint errors for global-variable-undefined and invalid-name + # for 'global module' usage, since it is required to use ansible_facts + # pylint: disable=global-variable-undefined, invalid-name, + # redefined-outer-name + global module + + module = AnsibleModule( + argument_spec=dict( + dest=dict(required=True), + yaml_key=dict(required=True), + yaml_value=dict(required=True), + backup=dict(required=False, default=True, type='bool'), + ), + supports_check_mode=True, + ) + + dest = module.params['dest'] + yaml_key = module.params['yaml_key'] + yaml_value = module.safe_eval(module.params['yaml_value']) + backup = module.params['backup'] + + # Represent null values as an empty string. + # pylint: disable=missing-docstring, unused-argument + def none_representer(dumper, data): + return yaml.ScalarNode(tag=u'tag:yaml.org,2002:null', value=u'') + yaml.add_representer(type(None), none_representer) + + try: + changes = [] + + yaml_file = open(dest) + yaml_data = yaml.safe_load(yaml_file.read()) + yaml_file.close() + + ptr = yaml_data + for key in yaml_key.split('.'): + if key not in ptr and key != yaml_key.split('.')[-1]: + ptr[key] = {} + elif key == yaml_key.split('.')[-1]: + if (key in ptr and module.safe_eval(ptr[key]) != yaml_value) or (key not in ptr): + ptr[key] = yaml_value + changes.append((yaml_key, yaml_value)) + else: + ptr = ptr[key] + + if len(changes) > 0: + if backup: + module.backup_local(dest) + yaml_file = open(dest, 'w') + yaml_string = yaml.dump(yaml_data, default_flow_style=False) + yaml_string = yaml_string.replace('\'\'', '""') + yaml_file.write(yaml_string) + yaml_file.close() + + return module.exit_json(changed=(len(changes) > 0), changes=changes) + + # ignore broad-except error to avoid stack trace to ansible user + # pylint: disable=broad-except + except Exception, e: + return module.fail_json(msg=str(e)) + +# ignore pylint errors related to the module_utils import +# pylint: disable=redefined-builtin, unused-wildcard-import, wildcard-import +# import module snippets +from ansible.module_utils.basic import * + +if __name__ == '__main__': + main() diff --git a/playbooks/common/openshift-master/scaleup.yml b/playbooks/common/openshift-master/scaleup.yml index 36b121d1c..52727bc03 100644 --- a/playbooks/common/openshift-master/scaleup.yml +++ b/playbooks/common/openshift-master/scaleup.yml @@ -30,10 +30,10 @@ ha: "{{ openshift_master_ha | default(groups.oo_masters | length > 1) }}" master_count: "{{ openshift_master_count | default(groups.oo_masters | length) }}" - name: Update master count - lineinfile: + modify_yaml: dest: "{{ openshift.common.config_base}}/master/master-config.yaml" - regexp: '^ masterCount:.*$' - line: " masterCount: {{ openshift.master.master_count }}" + yaml_key: 'kubernetesMasterConfig.masterCount' + yaml_value: "{{ openshift.master.master_count }}" notify: - restart master api - restart master controllers |