pvc/client-common/ceph.py

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2018-10-27 18:11:58 -04:00
# ceph.py - PVC client function library, Ceph cluster fuctions
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import re
import click
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import json
import time
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import math
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import client_lib.ansiprint as ansiprint
import client_lib.zkhandler as zkhandler
import client_lib.common as common
#
# Supplemental functions
#
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# Verify OSD is valid in cluster
def verifyOSD(zk_conn, osd_id):
if zkhandler.exists(zk_conn, '/ceph/osds/{}'.format(osd_id)):
return True
else:
return False
# Verify Pool is valid in cluster
def verifyPool(zk_conn, name):
if zkhandler.exists(zk_conn, '/ceph/pools/{}'.format(name)):
return True
else:
return False
# Verify Volume is valid in cluster
def verifyVolume(zk_conn, pool, name):
if zkhandler.exists(zk_conn, '/ceph/volumes/{}/{}'.format(pool, name)):
return True
else:
return False
# Verify Snapshot is valid in cluster
def verifySnapshot(zk_conn, pool, volume, name):
if zkhandler.exists(zk_conn, '/ceph/snapshots/{}/{}/{}'.format(pool, volume, name)):
return True
else:
return False
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# Verify OSD path is valid in cluster
def verifyOSDBlock(zk_conn, node, device):
for osd in zkhandler.listchildren(zk_conn, '/ceph/osds'):
osd_node = zkhandler.readdata(zk_conn, '/ceph/osds/{}/node'.format(osd))
osd_device = zkhandler.readdata(zk_conn, '/ceph/osds/{}/device'.format(osd))
if node == osd_node and device == osd_device:
return osd
return None
# Format byte sizes to/from human-readable units
unit_matrix = {
'B': 1,
'K': 1024,
'M': 1024*1024,
'G': 1024*1024*1024,
'T': 1024*1024*1024*1024,
'P': 1024*1024*1024*1024*1024
}
def format_bytes_tohuman(databytes):
datahuman = ''
for unit in sorted(unit_matrix, key=unit_matrix.get, reverse=True):
new_bytes = int(math.ceil(databytes / unit_matrix[unit]))
# Round up if 5 or more digits
if new_bytes > 9999:
# We can jump down another level
continue
else:
# We're at the end, display with this size
datahuman = '{}{}'.format(new_bytes, unit)
return datahuman
def format_bytes_fromhuman(datahuman):
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# Trim off human-readable character
dataunit = datahuman[-1]
datasize = int(datahuman[:-1])
databytes = datasize * unit_matrix[dataunit]
return '{}B'.format(databytes)
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#
# Status functions
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#
def get_status(zk_conn):
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primary_node = zkhandler.readdata(zk_conn, '/primary_node')
ceph_status = zkhandler.readdata(zk_conn, '/ceph').rstrip()
# Create a data structure for the information
status_data = {
'primary_node': primary_node,
'ceph_status': ceph_status
}
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return True, status_data
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def format_status(status_data):
click.echo('{bold}Ceph cluster status (primary node {end}{blue}{primary}{end}{bold}){end}\n'.format(bold=ansiprint.bold(), end=ansiprint.end(), blue=ansiprint.blue(), primary=status_data['primary_node']))
click.echo(status_data['ceph_status'])
click.echo('')
#
# OSD functions
#
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def getClusterOSDList(zk_conn):
# Get a list of VNIs by listing the children of /networks
osd_list = zkhandler.listchildren(zk_conn, '/ceph/osds')
return osd_list
def getOSDInformation(zk_conn, osd_id):
# Parse the stats data
osd_stats_raw = zkhandler.readdata(zk_conn, '/ceph/osds/{}/stats'.format(osd_id))
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osd_stats = dict(json.loads(osd_stats_raw))
# Deal with the size
databytes = osd_stats['kb'] * 1024
databytes_formatted = format_bytes_tohuman(databytes)
osd_stats['size'] = databytes_formatted
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osd_information = {
'id': osd_id,
'stats': osd_stats
}
return osd_information
def getOutputColoursOSD(osd_information):
# Set the UP status
if osd_information['stats']['up'] == 1:
osd_up_flag = 'Yes'
osd_up_colour = ansiprint.green()
else:
osd_up_flag = 'No'
osd_up_colour = ansiprint.red()
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# Set the IN status
if osd_information['stats']['in'] == 1:
osd_in = 'Yes'
osd_in_colour = ansiprint.green()
else:
osd_in = 'No'
osd_in_colour = ansiprint.red()
return osd_up_flag, osd_up_colour, osd_in_flag, osd_in_colour
def add_osd(zk_conn, node, device, weight):
# Verify the target node exists
if not common.verifyNode(zk_conn, node):
return False, 'ERROR: No node named "{}" is present in the cluster.'.format(node)
# Verify target block device isn't in use
block_osd = verifyOSDBlock(zk_conn, node, device)
if block_osd:
return False, 'ERROR: Block device {} on node {} is used by OSD {}'.format(device, node, block_osd)
# Tell the cluster to create a new OSD for the host
add_osd_string = 'osd_add {},{},{}'.format(node, device, weight)
zkhandler.writedata(zk_conn, {'/ceph/cmd': add_osd_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
if result == 'success-osd_add':
message = 'Created new OSD with block device {} on node {}.'.format(device, node)
success = True
else:
message = 'ERROR: Failed to create new OSD; check node logs for details.'
success = False
except:
message = 'ERROR: Command ignored by node.'
success = False
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
time.sleep(5)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
def remove_osd(zk_conn, osd_id):
if not verifyOSD(zk_conn, osd_id):
return False, 'ERROR: No OSD with ID "{}" is present in the cluster.'.format(osd_id)
# Tell the cluster to remove an OSD
remove_osd_string = 'osd_remove {}'.format(osd_id)
zkhandler.writedata(zk_conn, {'/ceph/cmd': remove_osd_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
if result == 'success-osd_remove':
message = 'Removed OSD {} from the cluster.'.format(osd_id)
success = True
else:
message = 'ERROR: Failed to remove OSD; check node logs for details.'
success = False
except:
success = False
message = 'ERROR Command ignored by node.'
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# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
time.sleep(5)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
def in_osd(zk_conn, osd_id):
if not verifyOSD(zk_conn, osd_id):
return False, 'ERROR: No OSD with ID "{}" is present in the cluster.'.format(osd_id)
# Tell the cluster to online an OSD
in_osd_string = 'osd_in {}'.format(osd_id)
zkhandler.writedata(zk_conn, {'/ceph/cmd': in_osd_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
if result == 'success-osd_in':
message = 'Set OSD {} online in the cluster.'.format(osd_id)
success = True
else:
message = 'ERROR: Failed to set OSD online; check node logs for details.'
success = False
except:
success = False
message = 'ERROR Command ignored by node.'
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
time.sleep(1)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
def out_osd(zk_conn, osd_id):
if not verifyOSD(zk_conn, osd_id):
return False, 'ERROR: No OSD with ID "{}" is present in the cluster.'.format(osd_id)
# Tell the cluster to offline an OSD
out_osd_string = 'osd_out {}'.format(osd_id)
zkhandler.writedata(zk_conn, {'/ceph/cmd': out_osd_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
if result == 'success-osd_out':
message = 'Set OSD {} offline in the cluster.'.format(osd_id)
success = True
else:
message = 'ERROR: Failed to set OSD offline; check node logs for details.'
success = False
except:
success = False
message = 'ERROR Command ignored by node.'
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
time.sleep(1)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
def set_osd(zk_conn, option):
# Tell the cluster to set an OSD property
set_osd_string = 'osd_set {}'.format(option)
zkhandler.writedata(zk_conn, {'/ceph/cmd': set_osd_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
if result == 'success-osd_set':
message = 'Set OSD property {} on the cluster.'.format(option)
success = True
else:
message = 'ERROR: Failed to set OSD property; check node logs for details.'
success = False
except:
success = False
message = 'ERROR Command ignored by node.'
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
def unset_osd(zk_conn, option):
# Tell the cluster to unset an OSD property
unset_osd_string = 'osd_unset {}'.format(option)
zkhandler.writedata(zk_conn, {'/ceph/cmd': unset_osd_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
if result == 'success-osd_unset':
message = 'Unset OSD property {} on the cluster.'.format(option)
success = True
else:
message = 'ERROR: Failed to unset OSD property; check node logs for details.'
success = False
except:
success = False
message = 'ERROR Command ignored by node.'
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
time.sleep(1)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
def get_list_osd(zk_conn, limit):
osd_list = []
full_osd_list = zkhandler.listchildren(zk_conn, '/ceph/osds')
for osd in full_osd_list:
if limit:
try:
# Implicitly assume fuzzy limits
if not re.match('\^.*', limit):
limit = '.*' + limit
if not re.match('.*\$', limit):
limit = limit + '.*'
if re.match(limit, osd):
osd_list.append(getOSDInformation(zk_conn, osd))
except Exception as e:
return False, 'Regex Error: {}'.format(e)
else:
osd_list.append(getOSDInformation(zk_conn, osd))
return True, osd_list
def format_list_osd(osd_list):
osd_list_output = []
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osd_id_length = 3
osd_up_length = 4
osd_in_length = 4
osd_size_length = 5
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osd_weight_length = 3
osd_reweight_length = 5
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osd_pgs_length = 4
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osd_node_length = 5
osd_used_length = 5
osd_free_length = 6
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osd_util_length = 6
osd_var_length = 6
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osd_wrops_length = 4
osd_wrdata_length = 5
osd_rdops_length = 4
osd_rddata_length = 5
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for osd_information in osd_list:
try:
# If this happens, the node hasn't checked in fully yet, so just ignore it
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if osd_information['stats']['node'] == '|':
continue
except KeyError:
continue
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# Set the OSD ID length
_osd_id_length = len(osd_information['id']) + 1
if _osd_id_length > osd_id_length:
osd_id_length = _osd_id_length
_osd_node_length = len(osd_information['stats']['node']) + 1
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if _osd_node_length > osd_node_length:
osd_node_length = _osd_node_length
# Set the size and length
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_osd_size_length = len(str(osd_information['stats']['size'])) + 1
if _osd_size_length > osd_size_length:
osd_size_length = _osd_size_length
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# Set the weight and length
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_osd_weight_length = len(str(osd_information['stats']['weight'])) + 1
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if _osd_weight_length > osd_weight_length:
osd_weight_length = _osd_weight_length
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# Set the reweight and length
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_osd_reweight_length = len(str(osd_information['stats']['reweight'])) + 1
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if _osd_reweight_length > osd_reweight_length:
osd_reweight_length = _osd_reweight_length
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# Set the pgs and length
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_osd_pgs_length = len(str(osd_information['stats']['pgs'])) + 1
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if _osd_pgs_length > osd_pgs_length:
osd_pgs_length = _osd_pgs_length
# Set the used/available/utlization%/variance and lengths
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_osd_used_length = len(osd_information['stats']['used']) + 1
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if _osd_used_length > osd_used_length:
osd_used_length = _osd_used_length
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_osd_free_length = len(osd_information['stats']['avail']) + 1
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if _osd_free_length > osd_free_length:
osd_free_length = _osd_free_length
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osd_util = round(osd_information['stats']['utilization'], 2)
_osd_util_length = len(str(osd_util)) + 1
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if _osd_util_length > osd_util_length:
osd_util_length = _osd_util_length
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osd_var = round(osd_information['stats']['var'], 2)
_osd_var_length = len(str(osd_var)) + 1
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if _osd_var_length > osd_var_length:
osd_var_length = _osd_var_length
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# Set the read/write IOPS/data and length
_osd_wrops_length = len(osd_information['stats']['wr_ops']) + 1
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if _osd_wrops_length > osd_wrops_length:
osd_wrops_length = _osd_wrops_length
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_osd_wrdata_length = len(osd_information['stats']['wr_data']) + 1
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if _osd_wrdata_length > osd_wrdata_length:
osd_wrdata_length = _osd_wrdata_length
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_osd_rdops_length = len(osd_information['stats']['rd_ops']) + 1
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if _osd_rdops_length > osd_rdops_length:
osd_rdops_length = _osd_rdops_length
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_osd_rddata_length = len(osd_information['stats']['rd_data']) + 1
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if _osd_rddata_length > osd_rddata_length:
osd_rddata_length = _osd_rddata_length
# Format the output header
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osd_list_output.append('{bold}\
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{osd_id: <{osd_id_length}} \
{osd_node: <{osd_node_length}} \
{osd_up: <{osd_up_length}} \
{osd_in: <{osd_in_length}} \
{osd_size: <{osd_size_length}} \
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{osd_pgs: <{osd_pgs_length}} \
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{osd_weight: <{osd_weight_length}} \
{osd_reweight: <{osd_reweight_length}} \
Sp: {osd_used: <{osd_used_length}} \
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{osd_free: <{osd_free_length}} \
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{osd_util: <{osd_util_length}} \
{osd_var: <{osd_var_length}} \
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Rd: {osd_rdops: <{osd_rdops_length}} \
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{osd_rddata: <{osd_rddata_length}} \
Wr: {osd_wrops: <{osd_wrops_length}} \
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{osd_wrdata: <{osd_wrdata_length}} \
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{end_bold}'.format(
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
osd_id_length=osd_id_length,
osd_node_length=osd_node_length,
osd_up_length=osd_up_length,
osd_in_length=osd_in_length,
osd_size_length=osd_size_length,
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osd_pgs_length=osd_pgs_length,
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osd_weight_length=osd_weight_length,
osd_reweight_length=osd_reweight_length,
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osd_used_length=osd_used_length,
osd_free_length=osd_free_length,
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osd_util_length=osd_util_length,
osd_var_length=osd_var_length,
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osd_wrops_length=osd_wrops_length,
osd_wrdata_length=osd_wrdata_length,
osd_rdops_length=osd_rdops_length,
osd_rddata_length=osd_rddata_length,
osd_id='ID',
osd_node='Node',
osd_up='Up',
osd_in='In',
osd_size='Size',
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osd_pgs='PGs',
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osd_weight='Wt',
osd_reweight='ReWt',
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osd_used='Used',
osd_free='Free',
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osd_util='Util%',
osd_var='Var',
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osd_wrops='OPS',
osd_wrdata='Data',
osd_rdops='OPS',
osd_rddata='Data'
)
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)
for osd_information in osd_list:
try:
# If this happens, the node hasn't checked in fully yet, so just ignore it
if osd_information['stats']['node'] == '|':
continue
except KeyError:
continue
osd_up_flag, osd_up_colour, osd_in_flag, osd_in_colour = getOutputColoursOSD(osd_information)
osd_util = round(osd_information['stats']['utilization'], 2)
osd_var = round(osd_information['stats']['var'], 2)
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# Format the output header
osd_list_output.append('{bold}\
{osd_id: <{osd_id_length}} \
{osd_node: <{osd_node_length}} \
{osd_up_colour}{osd_up: <{osd_up_length}}{end_colour} \
{osd_in_colour}{osd_in: <{osd_in_length}}{end_colour} \
{osd_size: <{osd_size_length}} \
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{osd_pgs: <{osd_pgs_length}} \
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{osd_weight: <{osd_weight_length}} \
{osd_reweight: <{osd_reweight_length}} \
{osd_used: <{osd_used_length}} \
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{osd_free: <{osd_free_length}} \
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{osd_util: <{osd_util_length}} \
{osd_var: <{osd_var_length}} \
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{osd_rdops: <{osd_rdops_length}} \
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{osd_rddata: <{osd_rddata_length}} \
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{osd_wrops: <{osd_wrops_length}} \
{osd_wrdata: <{osd_wrdata_length}} \
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{end_bold}'.format(
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bold='',
end_bold='',
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end_colour=ansiprint.end(),
osd_id_length=osd_id_length,
osd_node_length=osd_node_length,
osd_up_length=osd_up_length,
osd_in_length=osd_in_length,
osd_size_length=osd_size_length,
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osd_pgs_length=osd_pgs_length,
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osd_weight_length=osd_weight_length,
osd_reweight_length=osd_reweight_length,
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osd_used_length=osd_used_length,
osd_free_length=osd_free_length,
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osd_util_length=osd_util_length,
osd_var_length=osd_var_length,
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osd_wrops_length=osd_wrops_length,
osd_wrdata_length=osd_wrdata_length,
osd_rdops_length=osd_rdops_length,
osd_rddata_length=osd_rddata_length,
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osd_id=osd_information['id'],
osd_node=osd_information['stats']['node'],
osd_up_colour=osd_up_colour,
osd_up=osd_up_flag,
osd_in_colour=osd_in_colour,
osd_in=osd_in_flag,
osd_size=osd_information['stats']['size'],
osd_pgs=osd_information['stats']['pgs'],
osd_weight=osd_information['stats']['weight'],
osd_reweight=osd_information['stats']['reweight'],
osd_used=osd_information['stats']['used'],
osd_free=osd_information['stats']['avail'],
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osd_util=osd_util[osd],
osd_var=osd_var[osd],
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osd_wrops=osd_information['stats']['wr_ops'],
osd_wrdata=osd_information['stats']['wr_data'],
osd_rdops=osd_information['stats']['rd_ops'],
osd_rddata=osd_information['stats']['rd_data']
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)
)
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click.echo('\n'.join(sorted(osd_list_output)))
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#
# Pool functions
#
def getPoolInformation(zk_conn, pool):
# Parse the stats data
pool_stats_raw = zkhandler.readdata(zk_conn, '/ceph/pools/{}/stats'.format(pool))
pool_stats = dict(json.loads(pool_stats_raw))
# Deal with the size issues
for datatype in 'size_bytes', 'read_bytes', 'write_bytes':
databytes = pool_stats[datatype]
databytes_formatted = format_bytes_tohuman(databytes)
new_name = datatype.replace('bytes', 'formatted')
pool_stats[new_name] = databytes_formatted
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pool_information = {
'name': pool,
'stats': pool_stats
}
return pool_information
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def add_pool(zk_conn, name, pgs):
# Tell the cluster to create a new pool
add_pool_string = 'pool_add {},{}'.format(name, pgs)
zkhandler.writedata(zk_conn, {'/ceph/cmd': add_pool_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
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if result == 'success-pool_add':
message = 'Created new RBD pool {} with {} PGs.'.format(name, pgs)
success = True
else:
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message = 'ERROR: Failed to create new pool; check node logs for details.'
success = False
except:
message = 'ERROR: Command ignored by node.'
success = False
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# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
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time.sleep(3)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
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def remove_pool(zk_conn, name):
if not verifyPool(zk_conn, name):
return False, 'ERROR: No pool with name "{}" is present in the cluster.'.format(name)
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# Tell the cluster to create a new pool
remove_pool_string = 'pool_remove {}'.format(name)
zkhandler.writedata(zk_conn, {'/ceph/cmd': remove_pool_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
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if result == 'success-pool_remove':
message = 'Removed RBD pool {} and all volumes.'.format(name)
success = True
else:
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message = 'ERROR: Failed to remove pool; check node logs for details.'
success = False
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except Exception as e:
message = 'ERROR: Command ignored by node: {}'.format(e)
success = False
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
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time.sleep(3)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
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def get_list_pool(zk_conn, limit):
pool_list = []
full_pool_list = zkhandler.listchildren(zk_conn, '/ceph/pools')
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for pool in full_pool_list:
if limit:
try:
# Implicitly assume fuzzy limits
if not re.match('\^.*', limit):
limit = '.*' + limit
if not re.match('.*\$', limit):
limit = limit + '.*'
if re.match(limit, pool):
pool_list.append(getPoolInformation[zk_conn, pool])
except Exception as e:
return False, 'Regex Error: {}'.format(e)
else:
pool_list.append(getPoolInformation[zk_conn, pool])
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return True, pool_list
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def format_list_pool(pool_list):
pool_list_output = []
pool_name_length = 5
pool_id_length = 3
pool_size_length = 5
pool_num_objects_length = 6
pool_num_clones_length = 7
pool_num_copies_length = 7
pool_num_degraded_length = 9
pool_read_ops_length = 4
pool_read_data_length = 5
pool_write_ops_length = 4
pool_write_data_length = 5
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for pool_information in pool_list:
# Set the Pool name length
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_pool_name_length = len(pool_information['name']) + 1
if _pool_name_length > pool_name_length:
pool_name_length = _pool_name_length
# Set the id and length
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_pool_id_length = len(str(pool_information['stats']['id'])) + 1
if _pool_id_length > pool_id_length:
pool_id_length = _pool_id_length
# Set the size and length
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_pool_size_length = len(str(pool_information['stats']['size_formatted'])) + 1
if _pool_size_length > pool_size_length:
pool_size_length = _pool_size_length
# Set the num_objects and length
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_pool_num_objects_length = len(str(pool_information['stats']['num_objects'])) + 1
if _pool_num_objects_length > pool_num_objects_length:
pool_num_objects_length = _pool_num_objects_length
# Set the num_clones and length
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_pool_num_clones_length = len(str(pool_information['stats']['num_object_clones'])) + 1
if _pool_num_clones_length > pool_num_clones_length:
pool_num_clones_length = _pool_num_clones_length
# Set the num_copies and length
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_pool_num_copies_length = len(str(pool_information['stats']['num_object_copies'])) + 1
if _pool_num_copies_length > pool_num_copies_length:
pool_num_copies_length = _pool_num_copies_length
# Set the num_degraded and length
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_pool_num_degraded_length = len(str(pool_information['stats']['num_objects_degraded'])) + 1
if _pool_num_degraded_length > pool_num_degraded_length:
pool_num_degraded_length = _pool_num_degraded_length
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# Set the read/write IOPS/data and length
_pool_write_ops_length = len(str(pool_information['stats']['write_ops'])) + 1
if _pool_write_ops_length > pool_write_ops_length:
pool_write_ops_length = _pool_write_ops_length
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_pool_write_data_length = len(pool_information['stats']['write_formatted']) + 1
if _pool_write_data_length > pool_write_data_length:
pool_write_data_length = _pool_write_data_length
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_pool_read_ops_length = len(str(pool_information['stats']['read_ops'])) + 1
if _pool_read_ops_length > pool_read_ops_length:
pool_read_ops_length = _pool_read_ops_length
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_pool_read_data_length = len(pool_information['stats']['read_formatted']) + 1
if _pool_read_data_length > pool_read_data_length:
pool_read_data_length = _pool_read_data_length
# Format the output header
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pool_list_output.append('{bold}\
{pool_id: <{pool_id_length}} \
{pool_name: <{pool_name_length}} \
{pool_size: <{pool_size_length}} \
Obj: {pool_objects: <{pool_objects_length}} \
{pool_clones: <{pool_clones_length}} \
{pool_copies: <{pool_copies_length}} \
{pool_degraded: <{pool_degraded_length}} \
Rd: {pool_read_ops: <{pool_read_ops_length}} \
{pool_read_data: <{pool_read_data_length}} \
Wr: {pool_write_ops: <{pool_write_ops_length}} \
{pool_write_data: <{pool_write_data_length}} \
{end_bold}'.format(
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
pool_id_length=pool_id_length,
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pool_name_length=pool_name_length,
pool_size_length=pool_size_length,
pool_objects_length=pool_num_objects_length,
pool_clones_length=pool_num_clones_length,
pool_copies_length=pool_num_copies_length,
pool_degraded_length=pool_num_degraded_length,
pool_write_ops_length=pool_write_ops_length,
pool_write_data_length=pool_write_data_length,
pool_read_ops_length=pool_read_ops_length,
pool_read_data_length=pool_read_data_length,
pool_id='ID',
pool_name='Name',
pool_size='Used',
pool_objects='Count',
pool_clones='Clones',
pool_copies='Copies',
pool_degraded='Degraded',
pool_write_ops='OPS',
pool_write_data='Data',
pool_read_ops='OPS',
pool_read_data='Data'
)
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)
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for pool in pool_list:
# Format the output header
pool_list_output.append('{bold}\
{pool_id: <{pool_id_length}} \
{pool_name: <{pool_name_length}} \
{pool_size: <{pool_size_length}} \
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{pool_objects: <{pool_objects_length}} \
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{pool_clones: <{pool_clones_length}} \
{pool_copies: <{pool_copies_length}} \
{pool_degraded: <{pool_degraded_length}} \
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{pool_read_ops: <{pool_read_ops_length}} \
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{pool_read_data: <{pool_read_data_length}} \
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{pool_write_ops: <{pool_write_ops_length}} \
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{pool_write_data: <{pool_write_data_length}} \
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{end_bold}'.format(
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bold='',
end_bold='',
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pool_id_length=pool_id_length,
pool_name_length=pool_name_length,
pool_size_length=pool_size_length,
pool_objects_length=pool_num_objects_length,
pool_clones_length=pool_num_clones_length,
pool_copies_length=pool_num_copies_length,
pool_degraded_length=pool_num_degraded_length,
pool_write_ops_length=pool_write_ops_length,
pool_write_data_length=pool_write_data_length,
pool_read_ops_length=pool_read_ops_length,
pool_read_data_length=pool_read_data_length,
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pool_id=pool_information['stats']['id'],
pool_name=pool_information['name'],
pool_size=pool_information['stats']['size_formatted'],
pool_objects=pool_information['stats']['num_objects'],
pool_clones=pool_information['stats']['num_objects_clones'],
pool_copies=pool_information['stats']['num_objects_copies'],
pool_degraded=pool_information['stats']['num_objects_degraded'],
pool_write_ops=pool_information['stats']['write_ops'],
pool_write_data=pool_information['stats']['write_formatted'],
pool_read_ops=pool_information['stats']['read_ops'],
pool_read_data=pool_information['stats']['read_formatted']
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)
)
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click.echo('\n'.join(sorted(pool_list_output)))
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#
# Volume functions
#
def getCephVolumes(zk_conn, pool):
volume_list = list()
if not pool:
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pool_list = zkhandler.listchildren(zk_conn, '/ceph/pools')
else:
pool_list = [ pool ]
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for pool_name in pool_list:
for volume_name in zkhandler.listchildren(zk_conn, '/ceph/volumes/{}'.format(pool_name)):
volume_list.append('{}/{}'.format(pool_name, volume_name))
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return volume_list
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def getVolumeInformation(zk_conn, pool, volume):
# Parse the stats data
volume_stats_raw = zkhandler.readdata(zk_conn, '/ceph/volumes/{}/{}/stats'.format(pool, volume))
volume_stats = dict(json.loads(volume_stats_raw))
# Format the size to something nicer
volume_stats['size'] = format_bytes_tohuman(volume_stats['size'])
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volume_information = {
'name': volume,
'pool': pool,
'stats': volume_stats
}
return volume_information
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def add_volume(zk_conn, pool, name, size):
# Tell the cluster to create a new volume
databytes = format_bytes_fromhuman(size)
add_volume_string = 'volume_add {},{},{}'.format(pool, name, databytes)
zkhandler.writedata(zk_conn, {'/ceph/cmd': add_volume_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
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lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
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try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
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if result == 'success-volume_add':
message = 'Created new RBD volume {} of size {} on pool {}.'.format(name, size, pool)
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success = True
else:
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message = 'ERROR: Failed to create new volume; check node logs for details.'
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success = False
except:
message = 'ERROR: Command ignored by node.'
success = False
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
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time.sleep(1)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
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return success, message
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def remove_volume(zk_conn, pool, name):
if not verifyVolume(zk_conn, pool, name):
return False, 'ERROR: No volume with name "{}" is present in pool {}.'.format(name, pool)
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# Tell the cluster to create a new volume
remove_volume_string = 'volume_remove {},{}'.format(pool, name)
zkhandler.writedata(zk_conn, {'/ceph/cmd': remove_volume_string})
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# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
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if result == 'success-volume_remove':
message = 'Removed RBD volume {} in pool {}.'.format(name, pool)
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success = True
else:
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message = 'ERROR: Failed to remove volume; check node logs for details.'
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success = False
except Exception as e:
message = 'ERROR: Command ignored by node: {}'.format(e)
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success = False
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
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time.sleep(1)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
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return success, message
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def get_list_volume(zk_conn, pool, limit):
volume_list = []
if pool and not verifyPool(zk_conn, name):
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return False, 'ERROR: No pool with name "{}" is present in the cluster.'.format(name)
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full_volume_list = getCephVolumes(zk_conn, pool)
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for volume in full_volume_list:
pool_name, volume_name = volume.split('/')
if limit:
try:
# Implicitly assume fuzzy limits
if not re.match('\^.*', limit):
limit = '.*' + limit
if not re.match('.*\$', limit):
limit = limit + '.*'
if re.match(limit, volume):
volume_list.append(getVolumeInformation(zk_conn, pool_name, volume_name))
except Exception as e:
return False, 'Regex Error: {}'.format(e)
else:
volume_list.append(getVolumeInformation(zk_conn, pool_name, volume_name))
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return True, volume_list
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def format_list_volume(volume_list):
volume_list_output = []
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volume_name_length = 5
volume_pool_length = 5
volume_size_length = 5
volume_objects_length = 8
volume_order_length = 6
volume_format_length = 7
volume_features_length = 10
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for volume_information in volume_list:
# Set the Volume name length
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_volume_name_length = len(volume_information['name']) + 1
if _volume_name_length > volume_name_length:
volume_name_length = _volume_name_length
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# Set the Volume pool length
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_volume_pool_length = len(volume_information['pool']) + 1
if _volume_pool_length > volume_pool_length:
volume_pool_length = _volume_pool_length
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# Set the size and length
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_volume_size_length = len(str(volume_information['stats']['size'])) + 1
if _volume_size_length > volume_size_length:
volume_size_length = _volume_size_length
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# Set the num_objects and length
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_volume_objects_length = len(str(volume_information['stats']['objects'])) + 1
if _volume_objects_length > volume_objects_length:
volume_objects_length = _volume_objects_length
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# Set the order and length
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_volume_order_length = len(str(volume_information['stats']['order'])) + 1
if _volume_order_length > volume_order_length:
volume_order_length = _volume_order_length
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# Set the format and length
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_volume_format_length = len(str(volume_information['stats']['format'])) + 1
if _volume_format_length > volume_format_length:
volume_format_length = _volume_format_length
# Set the features and length
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_volume_features_length = len(str(volume_information['stats']['features'])) + 1
if _volume_features_length > volume_features_length:
volume_features_length = _volume_features_length
# Format the output header
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volume_list_output.append('{bold}\
{volume_name: <{volume_name_length}} \
{volume_pool: <{volume_pool_length}} \
{volume_size: <{volume_size_length}} \
{volume_objects: <{volume_objects_length}} \
{volume_order: <{volume_order_length}} \
{volume_format: <{volume_format_length}} \
{volume_features: <{volume_features_length}} \
{end_bold}'.format(
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
volume_name_length=volume_name_length,
volume_pool_length=volume_pool_length,
volume_size_length=volume_size_length,
volume_objects_length=volume_objects_length,
volume_order_length=volume_order_length,
volume_format_length=volume_format_length,
volume_features_length=volume_features_length,
volume_name='Name',
volume_pool='Pool',
volume_size='Size',
volume_objects='Objects',
volume_order='Order',
volume_format='Format',
volume_features='Features',
)
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)
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for volume_information in volume_list:
volume_list_output.append('{bold}\
{volume_name: <{volume_name_length}} \
{volume_pool: <{volume_pool_length}} \
{volume_size: <{volume_size_length}} \
{volume_objects: <{volume_objects_length}} \
{volume_order: <{volume_order_length}} \
{volume_format: <{volume_format_length}} \
{volume_features: <{volume_features_length}} \
{end_bold}'.format(
bold='',
end_bold='',
volume_name_length=volume_name_length,
volume_pool_length=volume_pool_length,
volume_size_length=volume_size_length,
volume_objects_length=volume_objects_length,
volume_order_length=volume_order_length,
volume_format_length=volume_format_length,
volume_features_length=volume_features_length,
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volume_name=volume_information['name'],
volume_pool=volume_information['pool'],
volume_size=volume_information['stats']['size'],
volume_objects=volume_information['stats']['objects'],
volume_order=volume_information['stats']['order'],
volume_format=volume_information['stats']['format'],
volume_features=volume_information['stats']['features'],
)
)
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click.echo('\n'.join(sorted(volume_list_output)))
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#
# Snapshot functions
#
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def getCephSnapshots(zk_conn, pool, volume):
snapshot_list = list()
volume_list = list()
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volume_list = getCephVolumes(zk_conn, pool)
if volume:
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for volume_entry in volume_list:
volume_pool, volume_name = volume_entry.split('/')
if volume_name == volume:
volume_list = [ '{}/{}'.format(volume_pool, volume_name) ]
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for volume_entry in volume_list:
for snapshot_name in zkhandler.listchildren(zk_conn, '/ceph/snapshots/{}'.format(volume_entry)):
snapshot_list.append('{}@{}'.format(volume_entry, snapshot_name))
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return snapshot_list
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def add_snapshot(zk_conn, pool, volume, name):
# Tell the cluster to create a new snapshot
add_snapshot_string = 'snapshot_add {},{},{}'.format(pool, volume, name)
zkhandler.writedata(zk_conn, {'/ceph/cmd': add_snapshot_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
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if result == 'success-snapshot_add':
message = 'Created new RBD snapshot {} of volume {} on pool {}.'.format(name, volume, pool)
success = True
else:
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message = 'ERROR: Failed to create new snapshot; check node logs for details.'
success = False
except:
message = 'ERROR: Command ignored by node.'
success = False
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
time.sleep(1)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
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def remove_snapshot(zk_conn, pool, volume, name):
if not verifySnapshot(zk_conn, pool, volume, name):
return False, 'ERROR: No snapshot with name "{}" is present of volume {} on pool {}.'.format(name, volume, pool)
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# Tell the cluster to create a new snapshot
remove_snapshot_string = 'snapshot_remove {},{},{}'.format(pool, volume, name)
zkhandler.writedata(zk_conn, {'/ceph/cmd': remove_snapshot_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/ceph/cmd')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/ceph/cmd').split()[0]
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if result == 'success-snapshot_remove':
message = 'Removed RBD snapshot {} and all volumes.'.format(name)
success = True
else:
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message = 'ERROR: Failed to remove snapshot; check node logs for details.'
success = False
except Exception as e:
message = 'ERROR: Command ignored by node: {}'.format(e)
success = False
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/ceph/cmd')
with lock:
time.sleep(1)
zkhandler.writedata(zk_conn, {'/ceph/cmd': ''})
return success, message
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def get_list_snapshot(zk_conn, pool, volume, limit):
snapshot_list = []
if pool and not verifyPool(zk_conn, pool):
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return False, 'ERROR: No pool with name "{}" is present in the cluster.'.format(pool)
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if volume and not verifyPool(zk_conn, volume):
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return False, 'ERROR: No volume with name "{}" is present in the cluster.'.format(volume)
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full_snapshot_list = getCephSnapshots(zk_conn, pool, volume)
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for snapshot in full_snapshot_list:
volume, snapshot_name = snapshot.split('@')
pool_name, volume_name = volume.split('/')
if limit:
try:
# Implicitly assume fuzzy limits
if not re.match('\^.*', limit):
limit = '.*' + limit
if not re.match('.*\$', limit):
limit = limit + '.*'
if re.match(limit, snapshot):
snapshot_list.append(getVolumeInformation(zk_conn, pool_name, volume_name, snapshot_name))
except Exception as e:
return False, 'Regex Error: {}'.format(e)
else:
snapshot_list.append(getVolumeInformation(zk_conn, pool_name, volume_name, snapshot_name))
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return True, snapshot_list
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def format_list_snapshot(snapshot_list):
snapshot_list_output = []
snapshot_name_length = 5
snapshot_volume_length = 7
snapshot_pool_length = 5
for snapshot in snapshot_list:
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volume, snapshot_name = snapshot.split('@')
snapshot_pool, snapshot_volume = volume.split('/')
# Set the Snapshot name length
_snapshot_name_length = len(snapshot_name) + 1
if _snapshot_name_length > snapshot_name_length:
snapshot_name_length = _snapshot_name_length
# Set the Snapshot volume length
_snapshot_volume_length = len(snapshot_volume) + 1
if _snapshot_volume_length > snapshot_volume_length:
snapshot_volume_length = _snapshot_volume_length
# Set the Snapshot pool length
_snapshot_pool_length = len(snapshot_pool) + 1
if _snapshot_pool_length > snapshot_pool_length:
snapshot_pool_length = _snapshot_pool_length
# Format the output header
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snapshot_list_output.append('{bold}\
{snapshot_name: <{snapshot_name_length}} \
{snapshot_volume: <{snapshot_volume_length}} \
{snapshot_pool: <{snapshot_pool_length}} \
{end_bold}'.format(
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
snapshot_name_length=snapshot_name_length,
snapshot_volume_length=snapshot_volume_length,
snapshot_pool_length=snapshot_pool_length,
snapshot_name='Name',
snapshot_volume='Volume',
snapshot_pool='Pool',
)
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)
for snapshot in snapshot_list:
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volume, snapshot_name = snapshot.split('@')
snapshot_pool, snapshot_volume = volume.split('/')
snapshot_list_output.append('{bold}\
{snapshot_name: <{snapshot_name_length}} \
{snapshot_volume: <{snapshot_volume_length}} \
{snapshot_pool: <{snapshot_pool_length}} \
{end_bold}'.format(
bold='',
end_bold='',
snapshot_name_length=snapshot_name_length,
snapshot_volume_length=snapshot_volume_length,
snapshot_pool_length=snapshot_pool_length,
snapshot_name=snapshot_name,
snapshot_volume=snapshot_volume,
snapshot_pool=snapshot_pool,
)
)
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click.echo('\n'.join(sorted(snapshot_list_output)))