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|
DOCUMENTATION = """
---
module: openshift_logging_facts
version_added: ""
short_description: Gather facts about the OpenShift logging stack
description:
- Determine the current facts about the OpenShift logging stack (e.g. cluster size)
options:
author: Red Hat, Inc
"""
EXAMPLES = """
- action: opneshift_logging_facts
"""
RETURN = """
"""
import copy
import json
import exceptions
import yaml
from subprocess import *
default_oc_options = ["-o","json"]
#constants used for various labels and selectors
COMPONENT_KEY="component"
LOGGING_INFRA_KEY="logging-infra"
#selectors for filtering resources
DS_FLUENTD_SELECTOR=LOGGING_INFRA_KEY + "=" + "fluentd"
LOGGING_SELECTOR=LOGGING_INFRA_KEY + "=" + "support"
ROUTE_SELECTOR = "component=support,logging-infra=support,provider=openshift"
COMPONENTS = ["kibana","curator","elasticsearch","fluentd", "kibana_ops", "curator_ops", "elasticsearch_ops"]
class OCBaseCommand(object):
def __init__(self, binary, kubeconfig, namespace):
self.binary = binary
self.kubeconfig = kubeconfig
self.user = self.getSystemAdmin(self.kubeconfig)
self.namespace = namespace
def getSystemAdmin(self,kubeconfig):
with open(kubeconfig,'r') as f:
config = yaml.load(f)
for user in config["users"]:
if user["name"].startswith("system:admin"):
return user["name"]
raise Exception("Unable to find system:admin in: " + kubeconfig)
def oc(self, sub, kind, namespace=None, name=None,addOptions=[]):
cmd = [self.binary, sub, kind]
if name != None:
cmd = cmd + [name]
if namespace != None:
cmd = cmd + ["-n", namespace]
cmd = cmd + ["--user="+self.user,"--config="+self.kubeconfig] + default_oc_options + addOptions
try:
process = Popen(cmd, stdout=PIPE, stderr=PIPE)
out, err = process.communicate(cmd)
if len(err) > 0:
if 'not found' in err:
return {'items':[]}
if 'No resources found' in err:
return {'items':[]}
raise Exception(err)
except Exception as e:
err = "There was an exception trying to run the command '"+ " ".join(cmd) +"' " + str(e)
raise Exception(err)
return json.loads(out)
class OpenshiftLoggingFacts(OCBaseCommand):
name = "facts"
def __init__(self, logger, binary, kubeconfig, namespace):
super(OpenshiftLoggingFacts, self).__init__(binary, kubeconfig, namespace)
self.logger = logger
self.facts = dict()
def defaultKeysFor(self, kind):
for comp in COMPONENTS:
self.addFactsFor(comp, kind)
def addFactsFor(self, comp, kind, name=None, facts=None):
if self.facts.has_key(comp) == False:
self.facts[comp] = dict()
if self.facts[comp].has_key(kind) == False:
self.facts[comp][kind] = dict()
if name:
self.facts[comp][kind][name] = facts
def factsForRoutes(self, namespace):
self.defaultKeysFor("routes")
routeList = self.oc("get","routes", namespace=namespace, addOptions=["-l",ROUTE_SELECTOR])
if len(routeList["items"]) == 0:
return None
for route in routeList["items"]:
name = route["metadata"]["name"]
comp = self.comp(name)
if comp != None:
self.addFactsFor(comp, "routes", name, dict(host=route["spec"]["host"]))
self.facts["agl_namespace"] = namespace
def factsForDaemonsets(self, namespace):
self.defaultKeysFor("daemonsets")
dsList = self.oc("get", "daemonsets", namespace=namespace, addOptions=["-l",LOGGING_INFRA_KEY+"=fluentd"])
if len(dsList["items"]) == 0:
return
for ds in dsList["items"]:
name = ds["metadata"]["name"]
comp = self.comp(name)
spec = ds["spec"]["template"]["spec"]
container = spec["containers"][0]
result = dict(
selector = ds["spec"]["selector"],
image = container["image"],
resources = container["resources"],
nodeSelector = spec["nodeSelector"],
serviceAccount = spec["serviceAccount"],
terminationGracePeriodSeconds = spec["terminationGracePeriodSeconds"]
)
self.addFactsFor(comp, "daemonsets", name, result)
def factsForPvcs(self, namespace):
self.defaultKeysFor("pvcs")
pvclist = self.oc("get", "pvc", namespace=namespace, addOptions=["-l",LOGGING_INFRA_KEY])
if len(pvclist["items"]) == 0:
return
pvcs = []
for pvc in pvclist["items"]:
name = pvc["metadata"]["name"]
comp = self.comp(name)
self.addFactsFor(comp,"pvcs",name,dict())
def factsForDeploymentConfigs(self, namespace):
self.defaultKeysFor("deploymentconfigs")
dclist = self.oc("get", "deploymentconfigs", namespace=namespace, addOptions=["-l",LOGGING_INFRA_KEY])
if len(dclist["items"]) == 0:
return
dcs = dclist["items"]
for dc in dcs:
name = dc["metadata"]["name"]
comp = self.comp(name)
if comp != None:
spec = dc["spec"]["template"]["spec"]
facts = dict(
selector = dc["spec"]["selector"],
replicas = dc["spec"]["replicas"],
serviceAccount = spec["serviceAccount"],
containers = dict(),
volumes = dict()
)
if spec.has_key("volumes"):
for vol in spec["volumes"]:
clone = copy.deepcopy(vol)
clone.pop("name", None)
facts["volumes"][vol["name"]] = clone
for container in spec["containers"]:
facts["containers"][container["name"]] = dict(
image = container["image"],
resources = container["resources"],
)
self.addFactsFor(comp,"deploymentconfigs",name,facts)
def factsForServices(self, namespace):
self.defaultKeysFor("services")
servicelist = self.oc("get", "services", namespace=namespace, addOptions=["-l",LOGGING_SELECTOR])
if len(servicelist["items"]) == 0:
return
for service in servicelist["items"]:
name = service["metadata"]["name"]
comp = self.comp(name)
if comp != None:
self.addFactsFor(comp, "services", name, dict())
def factsForConfigMaps(self, namespace):
self.defaultKeysFor("configmaps")
aList = self.oc("get", "configmaps", namespace=namespace, addOptions=["-l",LOGGING_SELECTOR])
if len(aList["items"]) == 0:
return
for item in aList["items"]:
name = item["metadata"]["name"]
comp = self.comp(name)
if comp != None:
self.addFactsFor(comp, "configmaps", name, item["data"])
def factsForOAuthClients(self, namespace):
self.defaultKeysFor("oauthclients")
aList = self.oc("get", "oauthclients", namespace=namespace, addOptions=["-l",LOGGING_SELECTOR])
if len(aList["items"]) == 0:
return
for item in aList["items"]:
name = item["metadata"]["name"]
comp = self.comp(name)
if comp != None:
result = dict(
redirectURIs = item["redirectURIs"]
)
self.addFactsFor(comp, "oauthclients", name, result)
def factsForSecrets(self, namespace):
self.defaultKeysFor("secrets")
aList = self.oc("get", "secrets", namespace=namespace)
if len(aList["items"]) == 0:
return
for item in aList["items"]:
name = item["metadata"]["name"]
comp = self.comp(name)
if comp != None and item["type"] == "Opaque":
result = dict(
keys = item["data"].keys()
)
self.addFactsFor(comp, "secrets", name, result)
def factsForSCCs(self, namespace):
self.defaultKeysFor("sccs")
scc = self.oc("get", "scc", name="privileged")
if len(scc["users"]) == 0:
return
for item in scc["users"]:
comp = self.comp(item)
if comp != None:
self.addFactsFor(comp, "sccs", "privileged", dict())
def factsForClusterRoleBindings(self, namespace):
self.defaultKeysFor("clusterrolebindings")
role = self.oc("get", "clusterrolebindings", name="cluster-readers")
if "subjects" not in role or len(role["subjects"]) == 0:
return
for item in role["subjects"]:
comp = self.comp(item["name"])
if comp != None and namespace == item["namespace"]:
self.addFactsFor(comp, "clusterrolebindings", "cluster-readers", dict())
# this needs to end up nested under the service account...
def factsForRoleBindings(self, namespace):
self.defaultKeysFor("rolebindings")
role = self.oc("get", "rolebindings", namespace=namespace, name="logging-elasticsearch-view-role")
if "subjects" not in role or len(role["subjects"]) == 0:
return
for item in role["subjects"]:
comp = self.comp(item["name"])
if comp != None and namespace == item["namespace"]:
self.addFactsFor(comp, "rolebindings", "logging-elasticsearch-view-role", dict())
def comp(self, name):
if name.startswith("logging-curator-ops"):
return "curator_ops"
elif name.startswith("logging-kibana-ops") or name.startswith("kibana-ops"):
return "kibana_ops"
elif name.startswith("logging-es-ops") or name.startswith("logging-elasticsearch-ops"):
return "elasticsearch_ops"
elif name.startswith("logging-curator"):
return "curator"
elif name.startswith("logging-kibana") or name.startswith("kibana"):
return "kibana"
elif name.startswith("logging-es") or name.startswith("logging-elasticsearch"):
return "elasticsearch"
elif name.startswith("logging-fluentd") or name.endswith("aggregated-logging-fluentd"):
return "fluentd"
else:
return None
def do(self):
self.factsForRoutes(self.namespace)
self.factsForDaemonsets(self.namespace)
self.factsForDeploymentConfigs(self.namespace)
self.factsForServices(self.namespace)
self.factsForConfigMaps(self.namespace)
self.factsForSCCs(self.namespace)
self.factsForOAuthClients(self.namespace)
self.factsForClusterRoleBindings(self.namespace)
self.factsForRoleBindings(self.namespace)
self.factsForSecrets(self.namespace)
self.factsForPvcs(self.namespace)
return self.facts
def main():
module = AnsibleModule(
argument_spec=dict(
admin_kubeconfig = {"required": True, "type": "str"},
oc_bin = {"required": True, "type": "str"},
openshift_logging_namespace = {"required": True, "type": "str"}
),
supports_check_mode = False
)
try:
cmd = OpenshiftLoggingFacts(module, module.params['oc_bin'], module.params['admin_kubeconfig'],module.params['openshift_logging_namespace'])
module.exit_json(
ansible_facts = {"openshift_logging_facts": cmd.do() }
)
except Exception as e:
module.fail_json(msg=str(e))
from ansible.module_utils.basic import *
if __name__ == '__main__':
main()
|
