A valid logstash query for this error: http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22exec%20user%20process%20caused%5C%22%20AND%20message%3A%5C%22no%20such%20file%20or%20directory%5C%22
A valid logstash query for this error: http:// logstash. openstack. org/#dashboard/ file/logstash. json?query= message% 3A%5C%22exec% 20user% 20process% 20caused% 5C%22%20AND% 20message% 3A%5C%22no% 20such% 20file% 20or%20director y%5C%22