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https://github.com/bashclub/check-zfs-replication.git
synced 2024-12-24 00:40:12 +01:00
Updated checkzfs to 3.17
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108
checkzfs.py
108
checkzfs.py
@ -16,7 +16,7 @@
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## GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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VERSION = 3.05
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VERSION = 3.17
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### for check_mk usage link or copy binary to check_mk_agent/local/checkzfs
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### create /etc/check_mk/checkzfs ## the config file name matches the filename in check_mk_agent/local/
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@ -34,22 +34,22 @@ VERSION = 3.05
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### disabled: 1 # [optional] disable the script with this config
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### legacyhosts: host1 # [optional] use an external script zfs_legacy_list to get snapshots with guid and creation at lease
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## Regex Tips:
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## 'Raid5[ab]\/(?!Rep_|Swap-)\w+' everything from Raid5a or Raid5b not start with Rep_ or Swap-
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##
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## legacy script example to put in path as zfs_legacy_list
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# #!/bin/bash
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#
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# for snapshot in $(zfs list -H -t all -o name);
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# do
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# echo -ne "$snapshot\t"
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# zfs get -H -p type,creation,guid $snapshot | awk '{print $2"="$3}'|
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# while IFS= read -r line; do
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# #arr[${line%=*}]="${line#*=}"
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# echo -ne "${line#*=}\t"
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# done
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# echo -e "0\t0\t0\t-\t-"
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# done
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##!/bin/bash
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## legacy script example to put in path as zfs_legacy_list to for host with missing written attribute and list option -p
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# for snapshot in $(zfs list -H -t all -o name);
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# do
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# echo -ne "$snapshot"
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# zfs get -H -p type,creation,guid,used,available,userrefs,com.sun:auto-snapshot,tv.sysops:checkzfs $snapshot | awk '{print $3}'|
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# while IFS= read -r line; do
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# echo -ne "\t${line}"
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# done
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# echo ""
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# done
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from pprint import pprint
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import sys
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@ -133,13 +133,13 @@ class zfs_dataset(object):
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return self.sorted_snapshots()[0]
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def get_info(self,source,threshold=None):
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def get_info(self,source,threshold=None,ignore_replica=False):
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_latest = self._get_latest_snapshot(source if source != self else None) ## wenn das source dataset nicht man selber ist
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_status = None
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_has_zfs_autosnapshot = any(map(lambda x: str(x.snapshot).startswith("zfs-auto-snap_"),self.snapshots.values()))
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_message = ""
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if source == self:
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if not self.replica:
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if not self.replica and ignore_replica == False:
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_status = 1 ## warn
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_message = _("kein Replikat gefunden")
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if self.autosnapshot == 2 and _has_zfs_autosnapshot:
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@ -256,18 +256,23 @@ class zfscheck(object):
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}
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COLUMN_MAPPER = {}
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def __init__(self,remote,source,legacyhosts,output,mail=None,prefix='REPLICA',**kwargs):
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def __init__(self,remote,source,legacyhosts,output,mail=None,prefix='REPLICA',debug=False,**kwargs):
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_start_time = time.time()
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self.remote_hosts = remote.split(",") if remote else [""] if source else [] ## wenn nicht und source woanders ... "" (also lokal) als remote
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self.source_hosts = source.split(",") if source else [""] ## wenn nix dann "" als local
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self.legacyhosts = legacyhosts.split(",") if legacyhosts else []
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self.legacy_hosts = legacyhosts.split(",") if legacyhosts else []
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self.filter = None
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self.debug = debug
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self.prefix = prefix.strip().replace(" ","_") ## service name bei checkmk leerzeichen durch _ ersetzen
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self.rawdata = False
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self.mail_address = mail
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self._overall_status = []
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self.sortreverse = False
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self.output = output if mail == None else "mail"
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self.print_debug(f"set attribute: remote -> {self.remote_hosts!r}")
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self.print_debug(f"set attribute: source -> {self.source_hosts!r}")
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if legacyhosts:
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self.print_debug(f"set attribute: legacyhosts -> {self.legacy_hosts}")
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self._check_kwargs(kwargs)
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self.get_data()
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if self.output != "snaplist":
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@ -291,6 +296,8 @@ class zfscheck(object):
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## argumente überprüfen
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for _k,_v in kwargs.items():
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self.print_debug(f"set attribute: {_k} -> {_v!r}")
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if _k == "columns":
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if self.output == "snaplist":
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_default = ["status","source","snapshot","replica","guid","age"]
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@ -359,13 +366,18 @@ class zfscheck(object):
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_hosts_checked = []
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_remote_servers = set(self.source_hosts + self.remote_hosts) ### no duplicate connection
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_remote_data = {}
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_start_time = time.time()
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_iteration = 0
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for _remote in _remote_servers: ## erstmal rohdaten holen
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_remote = _remote.strip() if type(_remote) == str else None ## keine leerzeichen, werden von ghbn mit aufgelöst
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_remote_data[_remote] = self._call_proc(_remote)
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_iteration+=1
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_matched_snapshots = 0
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_filtered_snapshots = 0
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for _remote,_rawdata in _remote_data.items(): ## allen source datasets erstmal snapshots hinzu und bei den anderen dataset anlegen
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for _entry in self._parse(_rawdata):
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for _entry in self._parse(_rawdata):
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_iteration+=1
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_dsname = "{0}#{dataset}".format(_remote,**_entry) ## name bilden
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_is_source = bool(_remote in self.source_hosts and self.filter.search(_dsname))
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if _entry.get("type") in ("volume","filesystem"): ## erstmal keine snapshots
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@ -375,15 +387,24 @@ class zfscheck(object):
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continue
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## snapshots
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if not self.snapshotfilter.search(_entry.get("snapshot","")): ## wenn --snapshotfilter gesetzt und kein match
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_filtered_snapshots+=1
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continue
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_matched_snapshots+=1
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_dataset = self.ZFS_DATASETS.get("{0}#{dataset}".format(_remote,**_entry))
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_snapshot = _dataset.add_snapshot(**_entry)
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try:
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_snapshot = _dataset.add_snapshot(**_entry)
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except:
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pass
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raise
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self.ZFS_SNAPSHOTS[_snapshot.guid] = _snapshot
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_execution_time = time.time() - _start_time
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if self.sourceonly == True:
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return
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for _remote,_rawdata in _remote_data.items(): ## jetzt nach replica suchen
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for _entry in self._parse(_rawdata): ## regex geparste ausgabe von zfs list
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_iteration+=1
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if _entry.get("type") != "snapshot": ## jetzt nur die snapshots
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continue
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_dataset = self.ZFS_DATASETS.get("{0}#{dataset}".format(_remote,**_entry))
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@ -394,6 +415,9 @@ class zfscheck(object):
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if _source_snapshot: ## wenn es schon eine gleiche guid gibt
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_source_snapshot.add_replica(_snapshot) ## replica hinzu
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self.print_debug(f"computation time: {_execution_time:0.2f} sec / iterations: {_iteration} / matched snapshots: {_matched_snapshots} / filtered snaphots: {_filtered_snapshots}")
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def get_snaplist(self):
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_output = []
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for _dataset in self.ZFS_DATASETS.values():
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@ -421,9 +445,11 @@ class zfscheck(object):
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continue
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#if _dataset.remote in self.remote_hosts:## or _dataset.autosnapshot == 0: ## wenn das dataset von der remote seite ist ... dann weiter oder wenn autosnasphot explizit aus ist ... dann nicht als source hinzufügen
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# continue
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_dataset_info = _dataset.get_info(_dataset,threshold=self.threshold)
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_dataset_info = _dataset.get_info(_dataset,threshold=self.threshold,ignore_replica=self.sourceonly)
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self._overall_status.append(_dataset_info.get("status",-1)) ## alle stati für email overall status
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_output.append(_dataset_info)
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if self.sourceonly == True:
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continue
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for _replica in _dataset.replica: ## jetzt das dataset welches als source angezeigt wird (alle filter etc entsprochen nach replika durchsuchen
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if not self.replicafilter.search(_replica.dataset_name):
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continue
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@ -447,7 +473,7 @@ class zfscheck(object):
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#"-r" ## recursive
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]
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if remote: ##wenn remote ssh adden
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if remote in self.legacyhosts:
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if remote in self.legacy_hosts:
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zfs_args = ["zfs_legacy_list"]
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_privkeyoption = []
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if self.ssh_identity:
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@ -468,8 +494,13 @@ class zfscheck(object):
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"-T", ## dont allocate Terminal
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"-p" , _port
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] + __sshoptions + _privkeyoption + zfs_args
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self.print_debug("call proc: '{0}'".format(" ".join(zfs_args)))
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_start_time = time.time()
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_proc = subprocess.Popen(zfs_args,stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=False) #aufruf prog entweder lokal oder mit ssh
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_stdout, _stderr = _proc.communicate()
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_execution_time = time.time() - _start_time
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_lines_returned = len(_stdout.split())
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self.print_debug(f"returncode: {_proc.returncode} / Executiontime: {_execution_time:0.2f} sec / Lines: {_lines_returned}")
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if _proc.returncode > 0: ## wenn fehler
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if remote and _proc.returncode in (2,66,74,76): ## todo max try
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pass ## todo retry ## hier könnte man es mehrfach versuchen wenn host nicht erreichbar aber macht bei check_mk keinen sinn
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@ -558,6 +589,10 @@ class zfscheck(object):
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_msg = _item.get("message","").strip()
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_msg = _msg if len(_msg) > 0 else "OK" ## wenn keine message ... dann OK
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_out.append(f"{_status} {self.prefix}:{_source} age={_age};{_threshold}|creation={_creation};;|file_size={_written};;|fs_used={_used};;|file_count={_count};; {_replica} - {_msg}")
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if self.piggyback != "":
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_out.insert(0,f"<<<<{self.piggyback}>>>>\n<<<local:sep(0)>>>")
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_out.append("<<<<>>>>")
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return "\n".join(_out)
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def table_output(self,data,color=True):
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@ -632,7 +667,7 @@ class zfscheck(object):
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_msg["To"] = _email
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_msg["Date"] = formatdate(localtime=True)
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_msg["x-checkzfs-status"] = str(max(self._overall_status))
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_msg["Subject"] = "ZFS-Check {0}".format(_hostname.split(".")[0])
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_msg["Subject"] = "ZFS-Check -{0}- {1}".format(self.format_status(max(self._overall_status)).upper(),_hostname.split(".")[0])
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_stderr, _stdout = (subprocess.PIPE,subprocess.PIPE)
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subprocess.run(["/usr/sbin/sendmail","-t","-oi"], input=_msg.as_bytes() ,stderr=_stderr,stdout=_stdout)
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@ -651,6 +686,11 @@ class zfscheck(object):
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def json_output(self,data):
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return json.dumps(data)
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def print_debug(self,msg,*args,**kwargs):
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if self.debug:
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sys.stderr.write(f"DEBUG: {msg}\n")
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sys.stderr.flush()
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if __name__ == "__main__":
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import argparse
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_parser = argparse.ArgumentParser(f"Tool to check ZFS Replication age\nVersion: {VERSION}\n##########################################\n")
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@ -670,6 +710,8 @@ if __name__ == "__main__":
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help=_("Zeige nur folgende Spalten ({0})".format(",".join(zfscheck.VALIDCOLUMNS))))
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_parser.add_argument("--sort",type=str,choices=zfscheck.VALIDCOLUMNS,
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help=_("Sortiere nach Spalte"))
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_parser.add_argument("--sourceonly",default=False,action="store_true",
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help=_("Nur Snapshot-Alter prüfen"))
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_parser.add_argument("--mail",type=str,
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help=_("Email für den Versand"))
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_parser.add_argument("--threshold",type=str,
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@ -684,13 +726,17 @@ if __name__ == "__main__":
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help=_("Prefix für check_mk Service (keine Leerzeichen)"))
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_parser.add_argument("--ssh-identity",type=str,
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help=_("Pfad zum ssh private key"))
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_parser.add_argument("--piggyback",type=str,default="",
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help=_("Zuordnung zu anderem Host bei checkmk"))
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_parser.add_argument("--ssh-extra-options",type=str,
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help=_("zusätzliche SSH Optionen mit Komma getrennt (HostKeyAlgorithms=ssh-rsa)"))
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_parser.add_argument("--debug",action="store_true",
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help=_("debug Ausgabe"))
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args = _parser.parse_args()
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_is_checkmk_plugin = os.path.dirname(os.path.abspath(__file__)).endswith("check_mk_agent/local") ## wenn im check_mk ordner
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_is_checkmk_plugin = os.path.dirname(os.path.abspath(__file__)).find("/check_mk_agent/local") > -1 ## wenn im check_mk ordner
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if _is_checkmk_plugin:
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try: ## parse check_mk options
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CONFIG_KEYS="disabled|source|remote|legacyhost|prefix|filter|replicafilter|threshold|snapshotfilter|ssh-identity|ssh-extra-options"
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CONFIG_KEYS="disabled|source|sourceonly|piggyback|remote|legacyhosts|prefix|filter|replicafilter|threshold|snapshotfilter|ssh-identity|ssh-extra-options"
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_config_regex = re.compile(f"^({CONFIG_KEYS}):\s*(.*?)(?:\s+#|$)",re.M)
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_basename = os.path.basename(__file__).split(".")[0] ## name für config ermitteln aufgrund des script namens
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_config_file = f"/etc/check_mk/{_basename}"
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@ -707,6 +753,8 @@ if __name__ == "__main__":
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for _k,_v in _config_regex.findall(_rawconfig):
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if _k == "disabled" and _v.lower().strip() in ( "1","yes","true"): ## wenn disabled dann ignorieren check wird nicht durchgeführt
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os._exit(0)
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if _k == "sourceonly":
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args.__dict__["sourceonly"] == bool(_v.lower().strip() in ( "1","yes","true"))
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args.__dict__[_k.replace("-","_")] = _v.strip()
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except:
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pass
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@ -719,5 +767,7 @@ if __name__ == "__main__":
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sys.exit(0)
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except Exception as e:
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print(str(e), file=sys.stderr)
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if args.debug:
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raise
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sys.exit(1)
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