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#!/usr/bin/env python
# Copyright (C) 2016-2017 Red Hat, Inc. <http://www.redhat.com>
#
# 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 2 of the License, or
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
Description: nfs ganesha base classes.
Pre-requisite: Please install gdeploy package on the glusto-tests
management node.
"""
import time
import socket
import re
from glusto.core import Glusto as g
from glustolibs.gluster.nfs_ganesha_ops import (
is_nfs_ganesha_cluster_exists,
is_nfs_ganesha_cluster_in_healthy_state,
teardown_nfs_ganesha_cluster,
create_nfs_ganesha_cluster,
configure_ports_on_clients,
ganesha_client_firewall_settings)
from glustolibs.gluster.volume_libs import is_volume_exported
def setup_nfs_ganesha(cls):
"""
Create nfs-ganesha cluster if not exists
Set client configurations for nfs-ganesha
Returns:
True(bool): If setup is successful
False(bool): If setup is failure
"""
# pylint: disable = too-many-statements, too-many-branches
# pylint: disable = too-many-return-statements
cluster_exists = is_nfs_ganesha_cluster_exists(
cls.servers_in_nfs_ganesha_cluster[0])
if cluster_exists:
is_healthy = is_nfs_ganesha_cluster_in_healthy_state(
cls.servers_in_nfs_ganesha_cluster[0])
if is_healthy:
g.log.info("Nfs-ganesha Cluster exists and is in healthy "
"state. Skipping cluster creation...")
else:
g.log.info("Nfs-ganesha Cluster exists and is not in "
"healthy state.")
g.log.info("Tearing down existing cluster which is not in "
"healthy state")
ganesha_ha_file = ("/var/run/gluster/shared_storage/"
"nfs-ganesha/ganesha-ha.conf")
g_node = cls.servers_in_nfs_ganesha_cluster[0]
g.log.info("Collecting server details of existing "
"nfs ganesha cluster")
# Check whether ganesha ha file exists
cmd = "[ -f {} ]".format(ganesha_ha_file)
ret, _, _ = g.run(g_node, cmd)
if ret:
g.log.error("Unable to locate %s", ganesha_ha_file)
return False
# Read contents of ganesha_ha_file
cmd = "cat {}".format(ganesha_ha_file)
ret, ganesha_ha_contents, _ = g.run(g_node, cmd)
if ret:
g.log.error("Failed to read %s", ganesha_ha_file)
return False
servers_in_existing_cluster = re.findall(r'VIP_(.*)\=.*',
ganesha_ha_contents)
ret = teardown_nfs_ganesha_cluster(
servers_in_existing_cluster, force=True)
if not ret:
g.log.error("Failed to teardown unhealthy ganesha "
"cluster")
return False
g.log.info("Existing unhealthy cluster got teardown "
"successfully")
if (not cluster_exists) or (not is_healthy):
g.log.info("Creating nfs-ganesha cluster of %s nodes"
% str(cls.num_of_nfs_ganesha_nodes))
g.log.info("Nfs-ganesha cluster node info: %s"
% cls.servers_in_nfs_ganesha_cluster)
g.log.info("Nfs-ganesha cluster vip info: %s"
% cls.vips_in_nfs_ganesha_cluster)
ret = create_nfs_ganesha_cluster(
cls.ganesha_servers_hostname,
cls.vips_in_nfs_ganesha_cluster)
if not ret:
g.log.error("Creation of nfs-ganesha cluster failed")
return False
if not is_nfs_ganesha_cluster_in_healthy_state(
cls.servers_in_nfs_ganesha_cluster[0]):
g.log.error("Nfs-ganesha cluster is not healthy")
return False
g.log.info("Nfs-ganesha Cluster exists is in healthy state")
ret = configure_ports_on_clients(cls.clients)
if not ret:
g.log.error("Failed to configure ports on clients")
return False
ret = ganesha_client_firewall_settings(cls.clients)
if not ret:
g.log.error("Failed to do firewall setting in clients")
return False
for server in cls.servers:
for client in cls.clients:
cmd = ("if [ -z \"$(grep -R \"%s\" /etc/hosts)\" ]; then "
"echo \"%s %s\" >> /etc/hosts; fi"
% (client, socket.gethostbyname(client), client))
ret, _, _ = g.run(server, cmd)
if ret != 0:
g.log.error("Failed to add entry of client %s in "
"/etc/hosts of server %s"
% (client, server))
for client in cls.clients:
for server in cls.servers:
cmd = ("if [ -z \"$(grep -R \"%s\" /etc/hosts)\" ]; then "
"echo \"%s %s\" >> /etc/hosts; fi"
% (server, socket.gethostbyname(server), server))
ret, _, _ = g.run(client, cmd)
if ret != 0:
g.log.error("Failed to add entry of server %s in "
"/etc/hosts of client %s"
% (server, client))
return True
def wait_for_nfs_ganesha_volume_to_get_exported(mnode, volname, timeout=120):
"""Waits for the nfs ganesha volume to get exported
Args:
mnode (str): Node on which command has to be executed.
volname (str): volume name
Kwargs:
timeout (int): timeout value in seconds to wait for volume
to get exported
Returns:
True on success, False otherwise
Examples:
>>> wait_for_volume_to_get_exported("abc.com", "testvol")
"""
count = 0
flag = 0
while count < timeout:
if is_volume_exported(mnode, volname, "nfs"):
flag = 1
break
time.sleep(10)
count = count + 10
if not flag:
g.log.error("Failed to export volume %s" % volname)
return False
return True
def wait_for_nfs_ganesha_volume_to_get_unexported(mnode, volname, timeout=120):
"""Waits for the nfs ganesha volume to get unexported
Args:
mnode (str): Node on which command has to be executed.
volname (str): volume name
Kwargs:
timeout (int): timeout value in seconds to wait for volume
to get unexported
Returns:
True on success, False otherwise
Examples:
>>> wait_for_volume_to_get_unexported("abc.com", "testvol")
"""
count = 0
flag = 0
while count < timeout:
if not is_volume_exported(mnode, volname, "nfs"):
flag = 1
break
time.sleep(10)
count = count + 10
if not flag:
g.log.error("Failed to unexport volume %s" % volname)
return False
return True
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