def is_netdata_installed(session, args):
with OperationLocker():
try:
run_command(['service', 'netdata', 'status'])
return json.dumps(True)
except Exception:
return json.dumps(False)
def install_netdata(session, args):
api_key = args['api_key']
destination = args['destination']
with OperationLocker():
install_package('netdata')
with open("/etc/netdata/stream.conf", "w") as conf_file:
conf_file.write(
netdata_streaming_content.format(destination, api_key))
run_command(['service', 'netdata', 'restart'])
return json.dumps(True)
def check_raid_pool(session, args):
device = '/dev/md127'
with OperationLocker():
result = run_command(['mdadm', '--detail', device])
lines = [line.strip() for line in result['stdout'].splitlines()]
lines = [line for line in lines if len(line) > 0]
# remove first line ('/dev/md127:')
lines = lines[1:]
# look for the line 'Number Major Minor RaidDevice State'
footer_index = next(i for i, line in enumerate(lines)
if line.startswith('Number'))
# '1 8 16 1 active sync /dev/sdb' -> ["1", "8", "16", "1", "active sync", "/dev/sdb"]
volumes = [[
field.strip() for field in line.split(' ')
if len(field.strip()) > 0
] for line in lines[footer_index + 1:]]
# 'Version : 1.0' -> {"Version": "1.0"}
lines = dict([[element.strip() for element in line.split(' : ', 1)]
for line in lines[0:footer_index]])
return json.dumps({'raid': lines, 'volumes': volumes})
def list_block_devices(session, args):
result = run_command(["lsblk", "-P", "-b", "-o", "NAME,KNAME,PKNAME,SIZE,TYPE,RO,MOUNTPOINT"])
output_string = result["stdout"].decode("utf-8").strip()
results = list()
blockdevices = dict()
for output in output_string.split("\n"):
output_dict = dict(re.findall(r'(\S+)=(".*?"|\S+)', output))
output_dict = {key.lower(): output_dict[key].strip('"') for key in output_dict}
kname = output_dict["kname"]
pkname = output_dict["pkname"]
if pkname != "":
parent = blockdevices[pkname]
if "children" not in parent:
parent["children"] = list()
parent["children"].append(output_dict)
else:
results.append(output_dict)
blockdevices[kname] = output_dict
return json.dumps({'blockdevices': results})
def list_zfs_pools(session, args):
try:
command = ['zfs', 'get', '-H', 'all']
_LOGGER.info('executing command {}...'.format(command))
result = run_command(command)
lines = result['stdout'].splitlines()
res = {}
def set_entry(pool, key, value):
if pool in res:
res.get(pool)[key] = value
else:
res[pool] = {key: value}
for line in lines:
split_line = line.split('\t')
set_entry(split_line[0], split_line[1], split_line[2])
return json.dumps(res)
except OSError as e:
if e.errno == errno.ENOENT:
return json.dumps({})
else:
raise
def update(session, args):
repos = build_repo_list(args.get('repos'))
task = None
res = None
error = None
try:
host = session.xenapi.session.get_this_host(session.handle)
host_name = session.xenapi.host.get_name_label(host)
host_uuid = session.xenapi.host.get_uuid(host)
task = session.xenapi.task.create('Update host %s (%s)' % (host_name, host_uuid), '')
packages = args.get('packages')
command = ['yum', 'update', '--disablerepo="*"', '--enablerepo=' + ','.join(repos), '-y']
if packages:
command.append(packages)
res = run_command(command)
session.xenapi.task.set_status(task, 'success')
except Exception as e:
error = e
finally:
if task:
session.xenapi.task.destroy(task)
if error:
raise error
return json.dumps(res)
def get_hyperthreading(session, args):
result = run_command(['xl', 'info', 'threads_per_core'])
_LOGGER.info(result)
lines = result['stdout'].splitlines()
return json.dumps(int(lines[0]) > 1)