248 lines
10 KiB
Python
248 lines
10 KiB
Python
#!/usr/bin/env python3
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# cluster.py - PVC client function library, cluster management
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# Part of the Parallel Virtual Cluster (PVC) system
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#
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# Copyright (C) 2018-2019 Joshua M. Boniface <joshua@boniface.me>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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###############################################################################
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import click
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import json
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import client_lib.ansiprint as ansiprint
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import client_lib.zkhandler as zkhandler
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import client_lib.common as common
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import client_lib.vm as pvc_vm
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import client_lib.node as pvc_node
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import client_lib.network as pvc_network
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import client_lib.ceph as pvc_ceph
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def getClusterInformation(zk_conn):
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# Get node information object list
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retcode, node_list = pvc_node.get_list(zk_conn, None)
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# Get vm information object list
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retcode, vm_list = pvc_vm.get_list(zk_conn, None, None, None)
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# Get network information object list
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retcode, network_list = pvc_network.get_list(zk_conn, None, None)
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# Get storage information object list
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retcode, ceph_osd_list = pvc_ceph.get_list_osd(zk_conn, None)
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retcode, ceph_pool_list = pvc_ceph.get_list_pool(zk_conn, None)
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retcode, ceph_volume_list = pvc_ceph.get_list_volume(zk_conn, None, None)
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retcode, ceph_snapshot_list = pvc_ceph.get_list_snapshot(zk_conn, None, None, None)
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# Determine, for each subsection, the total count
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node_count = len(node_list)
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vm_count = len(vm_list)
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network_count = len(network_list)
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ceph_osd_count = len(ceph_osd_list)
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ceph_pool_count = len(ceph_pool_list)
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ceph_volume_count = len(ceph_volume_list)
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ceph_snapshot_count = len(ceph_snapshot_list)
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# Determinations for node health
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node_healthy_status = list(range(0, node_count))
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node_report_status = list(range(0, node_count))
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for index, node in enumerate(node_list):
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daemon_state = node['daemon_state']
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domain_state = node['domain_state']
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if daemon_state != 'run' and domain_state != 'ready':
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node_healthy_status[index] = False
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else:
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node_healthy_status[index] = True
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node_report_status[index] = daemon_state + ',' + domain_state
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# Determinations for VM health
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vm_healthy_status = list(range(0, vm_count))
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vm_report_status = list(range(0, vm_count))
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for index, vm in enumerate(vm_list):
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vm_state = vm['state']
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if vm_state != 'start' and vm_state != 'disable':
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vm_healthy_status[index] = False
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else:
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vm_healthy_status[index] = True
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vm_report_status[index] = vm_state
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# Determinations for OSD health
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ceph_osd_healthy_status = list(range(0, ceph_osd_count))
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ceph_osd_report_status = list(range(0, ceph_osd_count))
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for index, ceph_osd in enumerate(ceph_osd_list):
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try:
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ceph_osd_up = ceph_osd['stats']['up']
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except KeyError:
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ceph_osd_up = 0
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try:
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ceph_osd_in = ceph_osd['stats']['in']
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except KeyError:
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ceph_osd_in = 0
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if not ceph_osd_up or not ceph_osd_in:
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ceph_osd_healthy_status[index] = False
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else:
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ceph_osd_healthy_status[index] = True
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up_texts = { 1: 'up', 0: 'down' }
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in_texts = { 1: 'in', 0: 'out' }
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ceph_osd_report_status[index] = up_texts[ceph_osd_up] + ',' + in_texts[ceph_osd_in]
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# Find out the overall cluster health; if any element of a healthy_status is false, it's unhealthy
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if False in node_healthy_status or False in vm_healthy_status or False in ceph_osd_healthy_status:
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cluster_health = 'Degraded'
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else:
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cluster_health = 'Optimal'
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# State lists
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node_state_combinations = [
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'run,ready', 'run,flush', 'run,flushed', 'run,unflush',
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'init,ready', 'init,flush', 'init,flushed', 'init,unflush',
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'stop,ready', 'stop,flush', 'stop,flushed', 'stop,unflush'
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]
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vm_state_combinations = [
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'start', 'restart', 'shutdown', 'stop', 'disable', 'fail', 'migrate', 'unmigrate'
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]
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ceph_osd_state_combinations = [
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'up,in', 'up,out', 'down,in', 'down,out'
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]
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# Format the Node states
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formatted_node_states = {'total': node_count}
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for state in node_state_combinations:
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state_count = 0
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for node_state in node_report_status:
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if node_state == state:
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state_count += 1
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if state_count > 0:
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formatted_node_states[state] = state_count
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# Format the VM states
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formatted_vm_states = {'total': vm_count}
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for state in vm_state_combinations:
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state_count = 0
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for vm_state in vm_report_status:
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if vm_state == state:
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state_count += 1
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if state_count > 0:
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formatted_vm_states[state] = state_count
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# Format the OSD states
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formatted_osd_states = {'total': ceph_osd_count}
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for state in ceph_osd_state_combinations:
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state_count = 0
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for ceph_osd_state in ceph_osd_report_status:
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if ceph_osd_state == state:
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state_count += 1
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if state_count > 0:
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formatted_osd_states[state] = state_count
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# Format the status data
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cluster_information = {
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'health': cluster_health,
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'primary_node': common.getPrimaryNode(zk_conn),
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'upstream_ip': zkhandler.readdata(zk_conn, '/upstream_ip'),
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'nodes': formatted_node_states,
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'vms': formatted_vm_states,
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'networks': network_count,
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'osds': formatted_osd_states,
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'pools': ceph_pool_count,
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'volumes': ceph_volume_count,
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'snapshots': ceph_snapshot_count
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}
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return cluster_information
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def get_info(zk_conn):
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# This is a thin wrapper function for naming purposes
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cluster_information = getClusterInformation(zk_conn)
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if cluster_information:
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return True, cluster_information
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else:
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return False, 'ERROR: Failed to obtain cluster information!'
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def format_info(cluster_information, oformat):
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if oformat == 'json':
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print(json.dumps(cluster_information))
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return
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if oformat == 'json-pretty':
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print(json.dumps(cluster_information, indent=4))
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return
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# Plain formatting, i.e. human-readable
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if cluster_information['health'] == 'Optimal':
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health_colour = ansiprint.green()
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else:
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health_colour = ansiprint.yellow()
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ainformation = []
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ainformation.append('{}PVC cluster status:{}'.format(ansiprint.bold(), ansiprint.end()))
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ainformation.append('')
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ainformation.append('{}Cluster health:{} {}{}{}'.format(ansiprint.purple(), ansiprint.end(), health_colour, cluster_information['health'], ansiprint.end()))
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ainformation.append('{}Primary node:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['primary_node']))
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ainformation.append('{}Cluster upstream IP:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['upstream_ip']))
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ainformation.append('')
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ainformation.append('{}Total nodes:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['nodes']['total']))
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ainformation.append('{}Total VMs:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['vms']['total']))
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ainformation.append('{}Total networks:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['networks']))
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ainformation.append('{}Total OSDs:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['osds']['total']))
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ainformation.append('{}Total pools:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['pools']))
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ainformation.append('{}Total volumes:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['volumes']))
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ainformation.append('{}Total snapshots:{} {}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['snapshots']))
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nodes_string = '{}Nodes:{} {}/{} {}ready,run{}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['nodes']['run,ready'], cluster_information['nodes']['total'], ansiprint.green(), ansiprint.end())
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for state, count in cluster_information['nodes'].items():
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if state == 'total' or state == 'run,ready':
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continue
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nodes_string += ' {}/{} {}{}{}'.format(count, cluster_information['nodes']['total'], ansiprint.yellow(), state, ansiprint.end())
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ainformation.append('')
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ainformation.append(nodes_string)
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vms_string = '{}VMs:{} {}/{} {}start{}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['vms']['start'], cluster_information['vms']['total'], ansiprint.green(), ansiprint.end())
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for state, count in cluster_information['vms'].items():
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if state == 'total' or state == 'start':
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continue
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if state == 'disable':
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colour = ansiprint.blue()
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else:
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colour = ansiprint.yellow()
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vms_string += ' {}/{} {}{}{}'.format(count, cluster_information['vms']['total'], colour, state, ansiprint.end())
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ainformation.append('')
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ainformation.append(vms_string)
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if cluster_information['osds']['total'] > 0:
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osds_string = '{}Ceph OSDs:{} {}/{} {}up,in{}'.format(ansiprint.purple(), ansiprint.end(), cluster_information['osds']['up,in'], cluster_information['osds']['total'], ansiprint.green(), ansiprint.end())
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for state, count in cluster_information['osds'].items():
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if state == 'total' or state == 'up,in':
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continue
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osds_string += ' {}/{} {}{}{}'.format(count, cluster_information['osds']['total'], ansiprint.yellow(), state, ansiprint.end())
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ainformation.append('')
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ainformation.append(osds_string)
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information = '\n'.join(ainformation)
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click.echo(information)
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click.echo('')
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