def configureNodes(clusterDelta, nagiosServerAddress, mode, timeout):
for host in clusterDelta['_hosts']:
# Only when a new node is added or whole cluster is added freshly.
if (clusterDelta.get(CHANGE_MODE) == CHANGE_MODE_ADD or
host.get(CHANGE_MODE) == CHANGE_MODE_ADD) \
and (host['use'] == 'gluster-host'):
if not nagiosServerAddress:
# Nagios server address should be specified as arg in auto mode
if mode == "manual":
nagiosServerAddress = getNagiosAddress(
clusterDelta['hostgroup_name'])
else:
print "Nagios server address is not specified in " \
"'auto' mode"
sys.exit(utils.PluginStatusCode.CRITICAL)
# Configure the nodes. clusterName, Nagios server address and
# host_name is passed as an argument to nrpe command
# 'configure_gluster_node'
server_utils.execNRPECommand(host['address'],
'configure_gluster_node',
arguments=[
clusterDelta['hostgroup_name'],
nagiosServerAddress,
host['host_name']
],
timeout=timeout,
json_output=False)
return nagiosServerAddress
def configureNodes(clusterDelta, nagiosServerAddress, mode, timeout):
for host in clusterDelta['_hosts']:
# Only when a new node is added or whole cluster is added freshly.
if (clusterDelta.get(CHANGE_MODE) == CHANGE_MODE_ADD or
host.get(CHANGE_MODE) == CHANGE_MODE_ADD) \
and (host['use'] == 'gluster-host'):
if not nagiosServerAddress:
# Nagios server address should be specified as arg in auto mode
if mode == "manual":
nagiosServerAddress = getNagiosAddress(
clusterDelta['hostgroup_name'])
else:
print "Nagios server address is not specified in " \
"'auto' mode"
sys.exit(utils.PluginStatusCode.CRITICAL)
# Configure the nodes. clusterName, Nagios server address and
# host_name is passed as an argument to nrpe command
# 'configure_gluster_node'
server_utils.execNRPECommand(
host['address'], 'configure_gluster_node',
arguments=[clusterDelta['hostgroup_name'],
nagiosServerAddress,
host['host_name']],
timeout=timeout,
json_output=False)
return nagiosServerAddress
def discoverCluster(hostip, cluster, timeout):
"""
This method helps to discover the nodes, volumes and bricks in the given
gluster. It uses NRPE commands to contact the gluster nodes.
Assumptions:
First node returned by the "discoverpeers" NRPE command should be the same
node where "discoverpeers" is executed.
Parameters
----------
hostip: Address of a node in the gluster cluster.
cluster: Cluster Name
Returns
---------
Returns cluster details in the following dictionary format
{
'name': cluster-name,
'volumes': [list-volumes],
'host': [list-hosts]
}
each host in the list will a have list of bricks from the host.
"""
clusterdata = {}
# Discover the logical components
componentlist = discoverVolumes(hostip, timeout)
# Discover the peers
hostlist = server_utils.execNRPECommand(hostip,
"discoverpeers",
timeout=timeout)
# Add the ip address of the root node given by the user to the peer list
hostlist[0]['hostip'] = hostip
for host in hostlist:
# Get host names for all the connected hosts
if host['status'] == HostStatus.CONNECTED:
hostDetails = server_utils.execNRPECommand(
host['hostip'],
"discoverhostparams",
timeout=timeout)
host.update(hostDetails)
# Get the list of bricks for this host and add to dictionary
host['bricks'] = []
for volume in componentlist['volumes']:
for brick in volume['bricks']:
if brick['hostUuid'] == host['uuid']:
brick['volumeName'] = volume['name']
host['bricks'].append(brick)
clusterdata['hosts'] = hostlist
clusterdata['volumes'] = componentlist['volumes']
clusterdata['name'] = cluster
# Host names returned by "discoverhostparams" supposed to be unique.
# So host name can be used to configure the host_name in nagios host.
# But if host names are not unique then we have to use IP address to
# configure host_name in nagios.
if not isHostsNamesUnique(clusterdata):
setHostNameWithIP(clusterdata)
return clusterdata
def discoverCluster(hostip, cluster, timeout):
"""
This method helps to discover the nodes, volumes and bricks in the given
gluster. It uses NRPE commands to contact the gluster nodes.
Assumptions:
First node returned by the "discoverpeers" NRPE command should be the same
node where "discoverpeers" is executed.
Parameters
----------
hostip: Address of a node in the gluster cluster.
cluster: Cluster Name
Returns
---------
Returns cluster details in the following dictionary format
{
'name': cluster-name,
'volumes': [list-volumes],
'host': [list-hosts]
}
each host in the list will a have list of bricks from the host.
"""
clusterdata = {}
# Discover the logical components
componentlist = discoverVolumes(hostip, timeout)
# Discover the peers
hostlist = server_utils.execNRPECommand(hostip,
"discoverpeers",
timeout=timeout)
# Add the ip address of the root node given by the user to the peer list
hostlist[0]['hostip'] = hostip
for host in hostlist:
# Get host names for all the connected hosts
if host['status'] == HostStatus.CONNECTED:
hostDetails = server_utils.execNRPECommand(host['hostip'],
"discoverhostparams",
timeout=timeout)
host.update(hostDetails)
# Get the list of bricks for this host and add to dictionary
host['bricks'] = []
for volume in componentlist['volumes']:
for brick in volume['bricks']:
if brick['hostUuid'] == host['uuid']:
brick['volumeName'] = volume['name']
host['bricks'].append(brick)
clusterdata['hosts'] = hostlist
clusterdata['volumes'] = componentlist['volumes']
clusterdata['name'] = cluster
# Host names returned by "discoverhostparams" supposed to be unique.
# So host name can be used to configure the host_name in nagios host.
# But if host names are not unique then we have to use IP address to
# configure host_name in nagios.
if not isHostsNamesUnique(clusterdata):
setHostNameWithIP(clusterdata)
return clusterdata
def discoverVolumes(hostip, timeout):
resultDict = {'volumes': []}
volumeList = server_utils.execNRPECommand(hostip,
"discover_volume_list",
timeout=timeout)
for volumeName in volumeList.keys():
volumeDetail = server_utils.execNRPECommand(hostip,
"discover_volume_info",
arguments=[volumeName],
timeout=timeout)
resultDict['volumes'].append(volumeDetail.get(volumeName))
return resultDict
def discoverVolumes(hostip, timeout):
resultDict = {'volumes': []}
volumeList = server_utils.execNRPECommand(hostip,
"discover_volume_list",
timeout=timeout)
for volumeName in volumeList.keys():
volumeDetail = server_utils.execNRPECommand(hostip,
"discover_volume_info",
arguments=[volumeName],
timeout=timeout)
resultDict['volumes'].append(volumeDetail.get(volumeName))
return resultDict
