def CheckSection(section, isSetting=False):
"""
function: check the section parameters status
input: section, isSetting
output: NA
"""
global configFile
dirName = os.path.dirname(os.path.realpath(__file__))
configFile = "%s/../gspylib/etc/conf/check_list.conf" % dirName
# get the parameter and value about section from configuration file
if (section == '/etc/security/limits.conf'):
checkList = ['open files', 'pipe size']
commParameterList = DefaultValue.getConfigFilePara(
configFile, section, checkList)
else:
commParameterList = DefaultValue.getConfigFilePara(configFile, section)
# checking or setting the parameter what in the commParameterList
checkSpecifiedItems(section, commParameterList, isSetting)
def checkNetWorkMTU():
"""
function: gs_check check NetWork card MTU parameters
input: NA
output: int
"""
try:
# Init cluster info
DbClusterInfo = dbClusterInfo()
DbClusterInfo.initFromStaticConfig(g_opts.user)
localHost = DefaultValue.GetHostIpOrName()
nodeIp = None
for dbnode in DbClusterInfo.dbNodes:
if (dbnode.name == localHost):
nodeIp = dbnode.backIps[0]
break
networkCardNum = DefaultValue.CheckNetWorkBonding(nodeIp, False)
# check NetWork card MTU parameters
valueStr = DefaultValue.checkNetWorkMTU(nodeIp, False)
if (not str(valueStr).isdigit()):
g_logger.log("Abnormal reason: Failed to obtain network"
" card MTU value." + " Error: \n%s" % valueStr)
return 1
netParameter = DefaultValue.getConfigFilePara(configFile,
'/sbin/ifconfig')
if (int(valueStr) != int(g_opts.mtuValue)):
g_logger.log(" Abnormal: network '%s' 'mtu' value[%s:%s]"
" is different from the other node [%s:%s]"
% (networkCardNum, localHost, valueStr,
g_opts.hostname, g_opts.mtuValue))
return 1
elif (int(valueStr) != int(netParameter["mtu"])):
g_logger.log(" Warning reason: variable 'MTU' RealValue "
"'%s' ExpectedValue '%s'." % (valueStr,
netParameter["mtu"]))
return 2
else:
return 0
except Exception as e:
g_logger.log(" Abnormal reason: Failed to obtain the"
" networkCard parameter [MTU]. Error: \n %s"
% str(e))
return 1
def checkSysctlParameter(kernelParameter, isSet):
"""
function: check and set the OS parameters
input: kernelParameter: OS parameters list will be check and set
isSet: the flag, when it is only True then will set OS parameters
output: NA
"""
setParameterList = {}
patchlevel = ""
# get the suggest parameters and updata kernelParameter
suggestParameterList = DefaultValue.getConfigFilePara(
configFile, 'SUGGEST:%s' % actioItemMap["Check_SysCtl_Parameter"][0])
kernelParameter.update(suggestParameterList)
# check the OS parameters
if ("fs.aio-max-nr" in kernelParameter):
g_logger.log(" Warning reason: Checking or setting the"
" parameter 'fs.aio-max-nr' should be use "
"'gs_checkos -i A10' or 'gs_checkos -i B4'.")
kernelParameter.pop("fs.aio-max-nr")
# Get OS version
distname, version = g_Platform.dist()[0:2]
if (distname == "SuSE" and version == "11"):
cmd = "grep -i 'PATCHLEVEL' /etc/SuSE-release |" \
" awk -F '=' '{print $2}'"
(status, output) = subprocess.getstatusoutput(cmd)
if (status == 0 and output != ""):
patchlevel = output.strip()
# Gs_check get NetWork card MTU
if (g_opts.action == "osKernelParameterCheck"):
checkrestult = checkNetWorkMTU()
if checkrestult != 0:
resultList.append(checkrestult)
for key in kernelParameter:
# The SuSE 11 SP1 operating system
# does not have vm.extfrag_threshold parameter, skip check
if (patchlevel == "1" and key == "vm.extfrag_threshold"):
continue
sysFile = "/proc/sys/%s" % key.replace('.', '/')
# High version of linux no longer supports tcp_tw_recycle
if not os.path.exists(
sysFile) and key == "net.ipv4.tcp_tw_recycle":
continue
if (DefaultValue.checkDockerEnv() and key in docker_no_need_check):
continue
# The parameter sctpchecksumerrors check method is independent
if (key == "sctpchecksumerrors"):
cmd = "cat /proc/net/sctp/snmp | grep SctpChecksumErrors" \
" | awk '{print $2}'"
else:
cmd = "cat %s" % ("/proc/sys/%s" % key.replace('.', '/'))
(status, output) = subprocess.getstatusoutput(cmd)
if (status == 0):
if (key == "vm.min_free_kbytes"
and output.split() != kernelParameter[key].split()):
expected_min = float(kernelParameter[key].split()[0]) * 0.9
expected_max = float(kernelParameter[key].split()[0]) * 1.1
if (int(output.split()[0]) > expected_max
or int(output.split()[0]) < expected_min):
resultList.append(1)
g_logger.log(" Abnormal reason: variable '%s'"
" RealValue '%s' ExpectedValue '%s'."
% (key, output, kernelParameter[key]))
setParameterList[key] = kernelParameter[key]
elif (key == "net.ipv4.ip_local_port_range"
and output.split() != kernelParameter[key].split()):
expected_min = int(kernelParameter[key].split()[0])
expected_max = int(kernelParameter[key].split()[1])
if (int(output.split()[0]) < expected_min
or int(output.split()[1]) > expected_max):
resultList.append(2)
g_logger.log(" Warning reason: variable '%s'"
" RealValue '%s' ExpectedValue '%s'."
% (key, output, kernelParameter[key]))
elif (output.split() != kernelParameter[key].split() and
key not in list(suggestParameterList.keys())):
resultList.append(1)
g_logger.log(" Abnormal reason: variable '%s'"
" RealValue '%s' ExpectedValue '%s'."
% (key, output, kernelParameter[key]))
setParameterList[key] = kernelParameter[key]
elif output.split() != kernelParameter[key].split():
if (key == "vm.overcommit_ratio"):
cmd = "cat /proc/sys/vm/overcommit_memory"
(status, value) = subprocess.getstatusoutput(cmd)
if (status == 0 and value == "0"):
continue
resultList.append(2)
g_logger.log(" Warning reason: variable '%s' RealValue"
" '%s' ExpectedValue '%s'."
% (key, output, kernelParameter[key]))
else:
resultList.append(1)
g_logger.log(" Abnormal reason: Failed to obtain the OS "
"kernel parameter [%s]. Error: \n %s"
% (key, output))
setParameterList[key] = kernelParameter[key]
if (1 in resultList and 'Check' in g_opts.action):
g_logger.log(" %s failed." % g_opts.action)
elif (2 in resultList and 'Check' in g_opts.action):
g_logger.log(" %s warning." % g_opts.action)
else:
g_logger.log(" All values about system control"
" parameters are correct: Normal")
# set the OS parameters
if isSet:
setOSParameter(setParameterList, patchlevel)
