def _check_requires(self, element, cluster_data=None):
"""
Validate a requires element, raising excError if the requirement is
not met.
"""
if element is None:
return
if element == "impossible":
raise ex.excContinueAction("skip impossible requirement")
if element.count("(") == 1:
rid, states = element.rstrip(")").split("(")
states = states.split(",")
else:
rid = element
states = ["up", "stdby up"]
if rid not in self.svc.resources_by_id:
self.log.warning("ignore requires on %s: resource not found", rid)
return
if cluster_data:
try:
current_state = cluster_data[rcEnv.nodename]["services"][
"status"][self.svc.path]["resources"][rid]["status"]
except KeyError:
current_state = "undef"
else:
resource = self.svc.resources_by_id[rid]
current_state = rcStatus.Status(resource.status())
if current_state not in states:
msg = "requires on resource %s in state %s, current state %s" % \
(rid, " or ".join(states), current_state)
if self.svc.options.cron:
raise ex.excContinueAction(msg)
else:
raise ex.excError(msg)
def load_status_last(self, refresh=False):
"""
Fetch the resource status from the on-disk cache.
"""
try:
with open(self.fpath_status_last, 'r') as ofile:
data = json.load(ofile)
except ValueError:
return rcStatus.UNDEF
except (OSError, IOError) as exc:
if exc.errno != 2:
# not EEXISTS
self.log.debug(exc)
return rcStatus.UNDEF
try:
status = rcStatus.Status(data["status"])
except (IndexError, AttributeError, ValueError) as exc:
self.log.debug(exc)
return rcStatus.UNDEF
if not refresh and hasattr(self, "set_label"):
if hasattr(self, "_lazy_label"):
attr = "_lazy_label"
else:
attr = "label"
try:
setattr(self, attr, data["label"])
except (IndexError, AttributeError, ValueError) as exc:
pass
self.status_logs = data.get("log", [])
return status
def write_status_history(self):
"""
Log a change to the resource status history file.
"""
fpath = self.fpath_status_history
try:
with open(fpath, 'r') as ofile:
lines = ofile.readlines()
last = lines[-1].split(" | ")[-1].strip("\n")
except:
last = None
current = rcStatus.Status(self.rstatus)
if current == last:
return
log = logging.getLogger("status_history")
logformatter = logging.Formatter("%(asctime)s | %(message)s")
logfilehandler = logging.handlers.RotatingFileHandler(
fpath,
maxBytes=512000,
backupCount=1,
)
logfilehandler.setFormatter(logformatter)
log.addHandler(logfilehandler)
log.error(current)
logfilehandler.close()
log.removeHandler(logfilehandler)
def _status(self, verbose=False):
self.data_status()
if not self.volsvc.exists():
self.status_log("volume %s does not exist" % self.volname, "info")
return rcStatus.DOWN
status = rcStatus.Status(self.volsvc.print_status_data()["avail"])
if not self.flag_installed():
self.status_log("%s is %s" % (self.volsvc.path, status), "info")
return rcStatus.DOWN
return status
def status(self, **kwargs):
"""
Resource status evaluation method wrapper.
Handles caching, nostatus tag and disabled flag.
"""
verbose = kwargs.get("verbose", False)
refresh = kwargs.get("refresh", False)
ignore_nostatus = kwargs.get("ignore_nostatus", False)
if self.is_disabled():
return rcStatus.NA
if not ignore_nostatus and "nostatus" in self.tags:
self.status_log("nostatus tag", "info")
return rcStatus.NA
if self.rstatus is not None and not refresh:
return self.rstatus
last_status = self.load_status_last(refresh)
if refresh:
self.purge_status_last()
else:
self.rstatus = last_status
# now the rstatus can no longer be None
if self.rstatus == rcStatus.UNDEF or refresh:
self.status_logs = []
self.rstatus = self.try_status(verbose)
self.rstatus = self.status_stdby(self.rstatus)
self.log.debug("refresh status: %s => %s",
rcStatus.Status(last_status),
rcStatus.Status(self.rstatus))
self.write_status()
if self.rstatus in (rcStatus.UP, rcStatus.STDBY_UP) and \
self.is_provisioned_flag() is False:
self.write_is_provisioned_flag(True)
return self.rstatus
def write_status_last(self):
"""
Write the in-memory resource status to the on-disk cache.
"""
data = {
"status": str(rcStatus.Status(self.rstatus)),
"label": self.label,
"log": self.status_logs,
}
dpath = os.path.dirname(self.fpath_status_last)
if not os.path.exists(dpath):
os.makedirs(dpath, 0o0755)
with open(self.fpath_status_last, 'w') as ofile:
json.dump(data, ofile)
ofile.flush()
def checkreserv(self):
self.log.debug("starting checkreserv. prkey %s"%self.hostid)
if self.ack_all_unit_attention() != 0:
return rcStatus.WARN
r = rcStatus.Status()
for d in self.devs:
try:
key = self.get_reservation_key(d) # pylint: disable=assignment-from-none
if key is None:
self.log.debug("disk %s is not reserved" % d)
r += rcStatus.DOWN
elif key != self.hostid:
self.log.debug("disk %s is reserved by another host whose key is %s" % (d, key))
r += rcStatus.DOWN
else:
self.log.debug("disk %s is correctly reserved" % d)
r += rcStatus.UP
except ex.excScsiPrNotsupported as exc:
self.log.warning(str(exc))
continue
return r.status
def status(self, **kwargs):
"""
Return the aggregate status a ResourceSet.
"""
agg_status = rcStatus.Status()
for resource in self.resources:
if resource.is_disabled():
continue
if not self.svc.encap and resource.encap:
# don't evaluate encap service resources
continue
try:
status = resource.status(**kwargs)
except:
import traceback
exc = sys.exc_info()
print(exc[0], exc[1], traceback.print_tb(exc[2]))
status = rcStatus.NA
agg_status += status
return agg_status.status
def docker_start(self, verbose=True):
"""
Start the docker daemon if in private mode and not already running.
"""
if not self.docker_daemon_private:
return
if self.docker_cmd is None:
raise ex.excError("docker executable not found")
import lock
lockfile = os.path.join(self.svc.var_d, "lock.docker_start")
try:
lockfd = lock.lock(timeout=15, delay=1, lockfile=lockfile)
except lock.LOCK_EXCEPTIONS as exc:
self.svc.log.error("dockerd start lock acquire failed: %s",
str(exc))
return
# Sanity checks before deciding to start the daemon
if self.docker_running():
lock.unlock(lockfd)
return
if self.container_data_dir is None:
lock.unlock(lockfd)
return
resource = self._container_data_dir_resource()
if resource is not None:
state = resource._status()
if state not in (rcStatus.UP, rcStatus.STDBY_UP):
self.svc.log.warning(
"the docker daemon data dir is handled by the %s "
"resource in %s state. can't start the docker "
"daemon", resource.rid, rcStatus.Status(state))
lock.unlock(lockfd)
return
if os.path.exists(self.docker_pid_file):
self.svc.log.warning("removing leftover pid file %s",
self.docker_pid_file)
os.unlink(self.docker_pid_file)
# Now we can start the daemon, creating its data dir if necessary
cmd = self.dockerd_cmd
if verbose:
self.svc.log.info("starting docker daemon")
self.svc.log.info(" ".join(cmd))
import subprocess
subprocess.Popen(
["nohup"] + cmd,
stdout=open("/dev/null", "w"),
stderr=open("/dev/null", "a"),
preexec_fn=os.setpgrp,
close_fds=True,
)
import time
try:
for _ in range(self.max_wait_for_dockerd):
if self._docker_working():
self.clear_daemon_caches()
return
time.sleep(1)
finally:
lock.unlock(lockfd)
