333 lines
11 KiB
Python
333 lines
11 KiB
Python
#!/usr/bin/env python3
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# ceph.py - PVC client function library, Ceph cluster fuctions
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# Part of the Parallel Virtual Cluster (PVC) system
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#
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# Copyright (C) 2018 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 re
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import click
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import ast
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import time
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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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#
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# Supplemental functions
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#
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#
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# Cluster search functions
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#
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def getClusterOSDList(zk_conn):
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# Get a list of VNIs by listing the children of /networks
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osd_list = zkhandler.listchildren(zk_conn, '/ceph/osds')
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return osd_list
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def getOSDInformation(zk_conn, osd_id):
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# Parse the stats data
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osd_stats_raw = zkhandler.readdata(zk_conn, '/ceph/osds/{}/stats'.format(osd_id))
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osd_stats = dict(ast.literal_eval(osd_stats_raw))
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return osd_stats
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def getCephOSDs(zk_conn):
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osd_list = zkhandler.listchildren(zk_conn, '/ceph/osds')
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return osd_list
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def formatOSDList(zk_conn, osd_list):
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osd_list_output = []
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osd_uuid = dict()
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osd_up = dict()
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osd_up_colour = dict()
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osd_in = dict()
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osd_in_colour = dict()
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osd_weight = dict()
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osd_node = dict()
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osd_used = dict()
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osd_free = dict()
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osd_wrops = dict()
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osd_wrdata = dict()
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osd_rdops = dict()
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osd_rddata = dict()
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osd_state = dict()
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osd_state_colour = dict()
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osd_id_length = 3
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osd_up_length = 4
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osd_in_length = 4
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osd_weight_length = 7
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osd_node_length = 5
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osd_used_length = 5
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osd_free_length = 6
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osd_wrops_length = 4
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osd_wrdata_length = 5
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osd_rdops_length = 4
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osd_rddata_length = 5
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for osd in osd_list:
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# Set the OSD ID length
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_osd_id_length = len(osd) + 1
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if _osd_id_length > osd_id_length:
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osd_id_length = _osd_id_length
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# Get stats
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osd_stats = getOSDInformation(zk_conn, osd)
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# Set the parent node and length
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try:
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osd_node[osd] = osd_stats['node']
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# If this happens, the node hasn't checked in fully yet, so just ignore it
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if osd_node[osd] == '|':
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continue
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except KeyError:
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continue
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_osd_node_length = len(osd_node[osd]) + 1
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if _osd_node_length > osd_node_length:
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osd_node_length = _osd_node_length
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# Set the UP status
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if osd_stats['up'] == 1:
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osd_up[osd] = 'Yes'
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osd_up_colour[osd] = ansiprint.green()
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else:
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osd_up[osd] = 'No'
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osd_up_colour[osd] = ansiprint.red()
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# Set the IN status
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if osd_stats['in'] == 1:
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osd_in[osd] = 'Yes'
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osd_in_colour[osd] = ansiprint.green()
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else:
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osd_in[osd] = 'No'
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osd_in_colour[osd] = ansiprint.red()
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# Set the weight and length
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osd_weight[osd] = osd_stats['weight']
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_osd_weight_length = len(str(osd_weight[osd])) + 1
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if _osd_weight_length > osd_weight_length:
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osd_weight_length = _osd_weight_length
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# Set the used/available space and length
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osd_used[osd] = osd_stats['used']
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_osd_used_length = len(osd_used[osd]) + 1
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if _osd_used_length > osd_used_length:
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osd_used_length = _osd_used_length
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osd_free[osd] = osd_stats['avail']
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_osd_free_length = len(osd_free[osd]) + 1
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if _osd_free_length > osd_free_length:
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osd_free_length = _osd_free_length
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# Set the write IOPS/data and length
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osd_wrops[osd] = osd_stats['wr_ops']
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_osd_wrops_length = len(osd_wrops[osd]) + 1
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if _osd_wrops_length > osd_wrops_length:
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osd_wrops_length = _osd_wrops_length
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osd_wrdata[osd] = osd_stats['wr_data']
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_osd_wrdata_length = len(osd_wrdata[osd]) + 1
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if _osd_wrdata_length > osd_wrdata_length:
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osd_wrdata_length = _osd_wrdata_length
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# Set the read IOPS/data and length
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osd_rdops[osd] = osd_stats['rd_ops']
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_osd_rdops_length = len(osd_rdops[osd]) + 1
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if _osd_rdops_length > osd_rdops_length:
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osd_rdops_length = _osd_rdops_length
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osd_rddata[osd] = osd_stats['rd_data']
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_osd_rddata_length = len(osd_rddata[osd]) + 1
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if _osd_rddata_length > osd_rddata_length:
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osd_rddata_length = _osd_rddata_length
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# Format the output header
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osd_list_output_header = '{bold}\
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{osd_id: <{osd_id_length}} \
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{osd_node: <{osd_node_length}} \
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{osd_up: <{osd_up_length}} \
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{osd_in: <{osd_in_length}} \
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{osd_weight: <{osd_weight_length}} \
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Space: {osd_used: <{osd_used_length}} \
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{osd_free: <{osd_free_length}} \
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Write: {osd_wrops: <{osd_wrops_length}} \
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{osd_wrdata: <{osd_wrdata_length}} \
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Read: {osd_rdops: <{osd_rdops_length}} \
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{osd_rddata: <{osd_rddata_length}} \
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{end_bold}'.format(
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bold=ansiprint.bold(),
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end_bold=ansiprint.end(),
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osd_id_length=osd_id_length,
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osd_node_length=osd_node_length,
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osd_up_length=osd_up_length,
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osd_in_length=osd_in_length,
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osd_weight_length=osd_weight_length,
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osd_used_length=osd_used_length,
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osd_free_length=osd_free_length,
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osd_wrops_length=osd_wrops_length,
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osd_wrdata_length=osd_wrdata_length,
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osd_rdops_length=osd_rdops_length,
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osd_rddata_length=osd_rddata_length,
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osd_id='ID',
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osd_node='Node',
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osd_up='Up',
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osd_in='In',
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osd_weight='Weight',
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osd_used='Used',
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osd_free='Free',
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osd_wrops='OPS',
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osd_wrdata='Data',
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osd_rdops='OPS',
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osd_rddata='Data'
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)
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for osd in osd_list:
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# Format the output header
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osd_list_output.append('{bold}\
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{osd_id: <{osd_id_length}} \
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{osd_node: <{osd_node_length}} \
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{osd_up_colour}{osd_up: <{osd_up_length}}{end_colour} \
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{osd_in_colour}{osd_in: <{osd_in_length}}{end_colour} \
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{osd_weight: <{osd_weight_length}} \
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{osd_used: <{osd_used_length}} \
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{osd_free: <{osd_free_length}} \
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{osd_wrops: <{osd_wrops_length}} \
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{osd_wrdata: <{osd_wrdata_length}} \
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{osd_rdops: <{osd_rdops_length}} \
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{osd_rddata: <{osd_rddata_length}} \
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{end_bold}'.format(
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bold=ansiprint.bold(),
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end_bold=ansiprint.end(),
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end_colour=ansiprint.end(),
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osd_id_length=osd_id_length,
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osd_node_length=osd_node_length,
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osd_up_length=osd_up_length,
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osd_in_length=osd_in_length,
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osd_weight_length=osd_weight_length,
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osd_used_length=osd_used_length,
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osd_free_length=osd_free_length,
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osd_wrops_length=osd_wrops_length,
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osd_wrdata_length=osd_wrdata_length,
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osd_rdops_length=osd_rdops_length,
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osd_rddata_length=osd_rddata_length,
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osd_id=osd,
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osd_node=osd_node[osd],
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osd_up_colour=osd_up_colour[osd],
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osd_up=osd_up[osd],
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osd_in_colour=osd_in_colour[osd],
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osd_in=osd_in[osd],
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osd_weight=osd_weight[osd],
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osd_used=osd_used[osd],
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osd_free=osd_free[osd],
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osd_wrops=osd_wrops[osd],
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osd_wrdata=osd_wrdata[osd],
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osd_rdops=osd_rdops[osd],
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osd_rddata=osd_rddata[osd]
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)
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)
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output_string = osd_list_output_header + '\n' + '\n'.join(sorted(osd_list_output))
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return output_string
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#
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# Direct functions
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#
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def get_status(zk_conn):
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status_data = zkhandler.readdata(zk_conn, '/ceph').rstrip()
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primary_node = zkhandler.readdata(zk_conn, '/primary_node')
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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=primary_node))
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click.echo(status_data)
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click.echo('')
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return True, ''
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def add_osd(zk_conn, node, device):
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# Verify the target node exists
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if not common.verifyNode(zk_conn, node):
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return False, 'ERROR: No node named "{}" is present in the cluster.'.format(node)
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# Tell the cluster to create a new OSD for the host
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add_osd_string = 'add {},{}'.format(node, device)
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zkhandler.writedata(zk_conn, {'/ceph/osd_cmd': add_osd_string})
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# Wait 1/2 second for the cluster to get the message and start working
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time.sleep(0.5)
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# Acquire a read lock, so we get the return exclusively
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lock = zkhandler.readlock(zk_conn, '/ceph/osd_cmd')
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with lock:
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result = zkhandler.readdata(zk_conn, '/ceph/osd_cmd').split()[0]
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if result == 'success-add':
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success = True
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else:
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success = False
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if success:
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return True, 'Created new OSD with block device {} on node {}.'.format(device, node)
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else:
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return False, 'Failed to create new OSD; check node logs for details.'
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def remove_osd(zk_conn, osd_id):
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if not common.verifyOSD(zk_conn, osd_id):
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return False, 'ERROR: No OSD with ID "{}" is present in the cluster.'.format(osd_id)
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# Tell the cluster to remove an OSD
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remove_osd_string = 'remove {}'.format(osd_id)
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zkhandler.writedata(zk_conn, {'/ceph/osd_cmd': remove_osd_string})
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# Wait 1/2 second for the cluster to get the message and start working
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time.sleep(0.5)
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# Acquire a read lock, so we get the return exclusively
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lock = zkhandler.readlock(zk_conn, '/ceph/osd_cmd')
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with lock:
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result = zkhandler.readdata(zk_conn, '/ceph/osd_cmd').split()[0]
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if result == 'success-remove':
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success = True
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else:
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success = False
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if success:
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return True, 'Removed OSD {} from the cluster.'.format(osd_id)
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else:
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return False, 'Failed to remove OSD; check node logs for details.'
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def get_list_osd(zk_conn, limit):
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osd_list = []
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full_osd_list = getCephOSDs(zk_conn)
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if limit:
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try:
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# Implicitly assume fuzzy limits
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if re.match('\^.*', limit) == None:
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limit = '.*' + limit
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if re.match('.*\$', limit) == None:
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limit = limit + '.*'
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except Exception as e:
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return False, 'Regex Error: {}'.format(e)
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for osd in full_osd_list:
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valid_osd = False
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if limit:
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if re.match(limit, osd['osd_id']) != None:
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valid_osd = True
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else:
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valid_osd = True
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if valid_osd:
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osd_list.append(osd)
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output_string = formatOSDList(zk_conn, osd_list)
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click.echo(output_string)
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return True, ''
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