def push_configuration(nodes):
'''
Push the local configuration to the list of remote nodes
'''
try:
from psshlib import api as pssh
_has_pssh = True
except ImportError:
_has_pssh = False
if not _has_pssh:
raise ValueError("PSSH is required to push")
local_path = conf()
opts = pssh.Options()
opts.timeout = 60
opts.ssh_options += ['ControlPersist=no']
ok = True
for host, result in pssh.copy(nodes,
local_path,
local_path, opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("Failed to push configuration to %s: %s" % (host, result))
ok = False
else:
err_buf.ok(host)
return ok
def do_status(self, context):
'''
Quick cluster health status. Corosync status, DRBD status...
'''
stack = utils.cluster_stack()
if not stack:
err_buf.error(
"No supported cluster stack found (tried heartbeat|openais|corosync)"
)
if utils.cluster_stack() == 'corosync':
print "Services:"
for svc in ["corosync", "pacemaker"]:
info = utils.service_info(svc)
if info:
print "%-16s %s" % (svc, info)
else:
print "%-16s unknown" % (svc)
rc, outp = utils.get_stdout(['corosync-cfgtool', '-s'],
shell=False)
if rc == 0:
print ""
print outp
else:
print "Failed to get corosync status"
def push_configuration(nodes):
'''
Push the local configuration to the list of remote nodes
'''
try:
from psshlib import api as pssh
_has_pssh = True
except ImportError:
_has_pssh = False
if not _has_pssh:
raise ValueError("PSSH is required to push")
local_path = conf()
opts = pssh.Options()
opts.timeout = 60
opts.ssh_options += ['ControlPersist=no']
ok = True
for host, result in pssh.copy(nodes, local_path, local_path,
opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("Failed to push configuration to %s: %s" %
(host, result))
ok = False
else:
err_buf.ok(host)
return ok
def verify(cib):
rc, _, stderr = utils.get_stdout_stderr(cib_verify, cib)
for i, line in enumerate(line for line in stderr.split('\n') if line):
if i == 0:
err_buf.error(_prettify(line, 0))
else:
err_buf.writemsg(_prettify(line, 7))
return rc
def verify(cib):
rc, _, stderr = utils.get_stdout_stderr(cib_verify, cib)
for i, line in enumerate(line for line in stderr.split('\n') if line):
if i == 0:
err_buf.error(_prettify(line, 0))
else:
err_buf.writemsg(_prettify(line, 7))
return rc
def _copy_to_remote_dirs(hosts, path, opts):
"Copy a local folder to same location on remote hosts"
ok = True
for host, result in _pssh_copy(hosts, path, path, opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: %s" % (host, result))
ok = False
if not ok:
raise ValueError("Failed when copying script data, aborting.")
def _copy_to_remote_dirs(hosts, path, opts):
"Copy a local folder to same location on remote hosts"
ok = True
for host, result in _pssh_copy(hosts,
path,
path, opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: %s" % (host, result))
ok = False
if not ok:
raise ValueError("Failed when copying script data, aborting.")
def _run_cleanup(local_node, hosts, workdir, opts):
"Clean up after the cluster script"
if hosts and workdir:
cleanscript = os.path.join(workdir, 'crm_clean.py')
for host, result in _pssh_call(hosts, "%s %s" % (cleanscript, workdir),
opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.debug("[%s]: Failed to clean up %s" % (host, workdir))
err_buf.error("[%s]: Clean: %s" % (host, result))
else:
_print_output(host, *result)
_cleanup_local(workdir)
def _create_remote_workdirs(hosts, path, opts):
"Create workdirs on remote hosts"
ok = True
for host, result in _pssh_call(hosts,
"mkdir -p %s" % (os.path.dirname(path)),
opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: Start: %s" % (host, result))
ok = False
if not ok:
msg = "Failed to connect to one or more of these hosts via SSH: %s" % (
', '.join(h[0] for h in hosts))
raise ValueError(msg)
def _print_debug(local_node, hosts, workdir, opts):
"Print debug output (if any)"
dbglog = os.path.join(workdir, 'crm_script.debug')
for host, result in _pssh_call(
hosts, "[ -f '%s' ] && cat '%s'" % (dbglog, dbglog),
opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: %s" % (host, result))
else:
_print_output(host, *result)
if os.path.isfile(dbglog):
f = open(dbglog).read()
err_buf.ok("[%s]: %s" % (local_node, f))
def _create_remote_workdirs(hosts, path, opts):
"Create workdirs on remote hosts"
ok = True
for host, result in _pssh_call(hosts,
"mkdir -p %s" % (os.path.dirname(path)),
opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: Start: %s" % (host, result))
ok = False
if not ok:
msg = "Failed to connect to one or more of these hosts via SSH: %s" % (
', '.join(h[0] for h in hosts))
raise ValueError(msg)
def _print_debug(local_node, hosts, workdir, opts):
"Print debug output (if any)"
dbglog = os.path.join(workdir, 'crm_script.debug')
for host, result in _pssh_call(hosts,
"[ -f '%s' ] && cat '%s'" % (dbglog, dbglog),
opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: %s" % (host, result))
else:
_print_output(host, *result)
if os.path.isfile(dbglog):
f = open(dbglog).read()
err_buf.ok("[%s]: %s" % (local_node, f))
def _run_cleanup(local_node, hosts, workdir, opts):
"Clean up after the cluster script"
if hosts and workdir:
cleanscript = os.path.join(workdir, 'crm_clean.py')
for host, result in _pssh_call(hosts,
"%s %s" % (cleanscript,
workdir),
opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.debug("[%s]: Failed to clean up %s" % (host, workdir))
err_buf.error("[%s]: Clean: %s" % (host, result))
else:
_print_output(host, *result)
_cleanup_local(workdir)
def single_step(self, step_name, statefile):
self.statefile = statefile
for step in self.main['steps']:
name, action, call = _step_action(step)
if name == step_name:
# if this is not the first step, load step data
if step != self.main['steps'][0]:
if os.path.isfile(statefile):
self.data = json.load(open(statefile))
else:
raise ValueError("No state for step: %s" % (step_name))
result = self.run_step(name, action, call)
json.dump(self.data, open(self.statefile, 'w'))
return result
err_buf.error("%s: Step not found" % (step_name))
return False
def single_step(self, step_name, statefile):
self.statefile = statefile
for step in self.main['steps']:
name, action, call = _step_action(step)
if name == step_name:
# if this is not the first step, load step data
if step != self.main['steps'][0]:
if os.path.isfile(statefile):
self.data = json.load(open(statefile))
else:
raise ValueError("No state for step: %s" % (step_name))
result = self.run_step(name, action, call)
json.dump(self.data, open(self.statefile, 'w'))
return result
err_buf.error("%s: Step not found" % (step_name))
return False
def _copy_to_all(workdir, hosts, local_node, src, dst, opts):
"""
Copy src to dst both locally and remotely
"""
ok = True
ret = _pssh_copy(hosts, src, dst, opts)
for host, result in ret.iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: %s" % (host, result))
ok = False
else:
rc, out, err = result
if rc != 0:
err_buf.error("[%s]: %s" % (host, err))
ok = False
if local_node and not src.startswith(workdir):
try:
if os.path.abspath(src) != os.path.abspath(dst):
if os.path.isfile(src):
shutil.copy(src, dst)
else:
shutil.copytree(src, dst)
except (IOError, OSError, shutil.Error), e:
err_buf.error("[%s]: %s" % (local_node, e))
ok = False
def _copy_to_all(workdir, hosts, local_node, src, dst, opts):
"""
Copy src to dst both locally and remotely
"""
ok = True
ret = _pssh_copy(hosts, src, dst, opts)
for host, result in ret.iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: %s" % (host, result))
ok = False
else:
rc, out, err = result
if rc != 0:
err_buf.error("[%s]: %s" % (host, err))
ok = False
if local_node and not src.startswith(workdir):
try:
if os.path.abspath(src) != os.path.abspath(dst):
if os.path.isfile(src):
shutil.copy(src, dst)
else:
shutil.copytree(src, dst)
except (IOError, OSError, shutil.Error), e:
err_buf.error("[%s]: %s" % (local_node, e))
ok = False
def do_status(self, context):
'''
Quick cluster health status. Corosync status, DRBD status...
'''
stack = utils.cluster_stack()
if not stack:
err_buf.error("No supported cluster stack found (tried heartbeat|openais|corosync)")
if utils.cluster_stack() == 'corosync':
print "Services:"
for svc in ["corosync", "pacemaker"]:
info = utils.service_info(svc)
if info:
print "%-16s %s" % (svc, info)
else:
print "%-16s unknown" % (svc)
rc, outp = utils.get_stdout(['corosync-cfgtool', '-s'], shell=False)
if rc == 0:
print ""
print outp
else:
print "Failed to get corosync status"
def do_run(self, context, cmd):
'''
Execute the given command on all nodes, report outcome
'''
try:
from psshlib import api as pssh
_has_pssh = True
except ImportError:
_has_pssh = False
if not _has_pssh:
context.fatal_error("PSSH not found")
hosts = utils.list_cluster_nodes()
opts = pssh.Options()
for host, result in pssh.call(hosts, cmd, opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: %s" % (host, result))
else:
if result[0] != 0:
err_buf.error("[%s]: rc=%s\n%s\n%s" % (host, result[0], result[1], result[2]))
else:
err_buf.ok("[%s]\n%s" % (host, result[1]))
def push_configuration(nodes):
'''
Push the local configuration to the list of remote nodes
'''
try:
import parallax
except ImportError:
raise ValueError("parallax is required to push")
local_path = conf()
opts = parallax.Options()
opts.timeout = 60
opts.ssh_options += ['ControlPersist=no']
ok = True
for host, result in parallax.copy(nodes,
local_path,
local_path, opts).iteritems():
if isinstance(result, parallax.Error):
err_buf.error("Failed to push configuration to %s: %s" % (host, result))
ok = False
else:
err_buf.ok(host)
return ok
def do_run(self, context, cmd):
'''
Execute the given command on all nodes, report outcome
'''
try:
from psshlib import api as pssh
_has_pssh = True
except ImportError:
_has_pssh = False
if not _has_pssh:
context.fatal_error("PSSH not found")
hosts = utils.list_cluster_nodes()
opts = pssh.Options()
for host, result in pssh.call(hosts, cmd, opts).iteritems():
if isinstance(result, pssh.Error):
err_buf.error("[%s]: %s" % (host, result))
else:
if result[0] != 0:
err_buf.error("[%s]: rc=%s\n%s\n%s" %
(host, result[0], result[1], result[2]))
else:
err_buf.ok("[%s]\n%s" % (host, result[1]))
def _print_output(host, rc, out, err):
"Print the output from a process that ran on host"
if out:
err_buf.ok("[%s]: %s" % (host, out))
if err:
err_buf.error("[%s]: %s" % (host, err))
def error(self, fmt, *args):
self.flush()
err_buf.error(fmt % args)
def error(self, fmt, *args):
self.flush()
err_buf.error(fmt % args)
def _print_output(host, rc, out, err):
"Print the output from a process that ran on host"
if out:
err_buf.ok("[%s]: %s" % (host, out))
if err:
err_buf.error("[%s]: %s" % (host, err))
