Sommario

Introduzione

Controlla stato del servizio Esposizione

Servizio Query Zookeeper

File di log di Zookeeper in una configurazione dinamica

File di registro di Zookeeper da bundle di supporto (storfs)

Introduzione

Questo documento descrive ZooKeeper, che è essenzialmente un servizio centralizzato per sistemi distribuiti a un archivio valori chiave gerarchico. Viene utilizzato per fornire un servizio di configurazione distribuita, un servizio di sincronizzazione e un registro di denominazione per sistemi distribuiti di grandi dimensioni. L'architettura di ZooKeeper supporta l'alta disponibilità tramite servizi ridondanti. I clienti possono quindi chiedere a un altro capo ZooKeeper se il primo non risponde. I nodi ZooKeeper memorizzano i propri dati in uno spazio dei nomi gerarchico, in modo simile a un file system o a una struttura dati. I client possono leggere e scrivere nei nodi e in questo modo disporre di un servizio di configurazione condiviso. ZooKeeper può essere visto come un sistema di trasmissione atomico attraverso il quale gli aggiornamenti sono totalmente ordinati.

ZooKeeper offre queste caratteristiche principali:

- Sistema affidabile: il sistema è molto affidabile perché continua a funzionare anche in caso di guasto di un nodo.

- Architettura semplice - L'architettura di ZooKeeper è abbastanza semplice; utilizza uno spazio dei nomi gerarchico condiviso che facilita il coordinamento dei processi.

- Elaborazione rapida - ZooKeeper è particolarmente veloce per i carichi di lavoro dominanti in lettura.

- Scalabile - Le prestazioni di ZooKeeper possono essere migliorate con l'aggiunta di nodi.

In HX, esiste questa implementazione specifica:

- Il servizio chiamato exitor gestisce l'avvio/lo spegnimento dello zookeeper.

- I processi all'interno del cluster HX sono client verso Zookeeper e comunicano tramite la porta tcp 2181 ex storfs, stmgr e così via.

- I sistemi con più di cinque nodi avranno alcuni nodi in modalità standalone. I sistemi con cinque nodi o meno non devono mai avere un nodo in modalità standalone.

- Numero minimo di nodi necessari per il quorum = N/2 +1.

Ad esempio, per un cluster a tre nodi - N/2=1,5 Arrotondato a 1 +1 =2 (è possibile tollerare un solo errore di nodo)

Ad esempio, per un cluster a cinque nodi - N/2=2,5 Arrotondato a 2 +1 =3 (sono tollerati solo gli errori di due nodi)

Poiché per un cluster ZK vengono eseguiti solo cinque nodi, è possibile tollerare un massimo di due errori di nodo per qualsiasi numero di nodi nel cluster. Ciò è vero per i nodi convergenti.

Controlla stato del servizio Esposizione

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper# service exhibitor status

exhibitor start/running, process 4905

root@help:/var/log/springpath# ps -aux | grep -i exhibitor

root 12519 0.0 0.2 4690592 198892 ? Ssl May19 7:19 exhibitor -cp exhibitor.jar:/etc/exhibitor/ -Xmx256M -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/log/exhibitor_heap_dump_2019_05_19_22:19:48.hprof -Dlog4j.configuration=file:///etc/exhibitor/log4j.properties -Dspringpath.zkdownscript=/usr/share/springpath/storfs-misc/zkMonitor.sh -Djava.security.egd=file:/dev/./urandom -jar exhibitor.jar --hostname 10.197.252.100 -c file --fsconfigdir /etc/exhibitor --port 8180 --listenaddress 10.197.252.100

root@help:/var/log/springpath# pidof exhibitor

12519

Servizio Query Zookeeper

Zookeeper dispone di una sintassi di comando di quattro lettere che consente di eseguire query su stato, elenchi di connessioni, numero di znode e così via.

Controllare lo stato di zookeeper sul nodo locale - (ruok ==> Continuare?. imok=>Sono OK.

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper# echo ruok|nc localhost 2181

imok

Controllate se lo zookeeper è un puntale o un puntale.

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper#  echo srvr | nc localhost 2181

Zookeeper version: 3.4.6--1, built on 06/16/2015 22:50 GMT

Latency min/avg/max: 0/0/101

Received: 213128515

Sent: 213164119

Connections: 6

Outstanding: 0

Zxid: 0xa000301d0

Mode: leader

Node count: 17090

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper#  echo stat | nc localhost 2181

Zookeeper version: 3.4.6--1, built on 06/16/2015 22:50 GMT

Clients:

/192.168.5.161:56128[1](queued=0,recved=169146196,sent=169162634)

/192.168.5.161:38614[1](queued=0,recved=186015,sent=186017)

/192.168.5.164:44412[1](queued=0,recved=184398,sent=184399)

/192.168.5.164:44447[1](queued=0,recved=561168,sent=563034)

/127.0.0.1:60060[0](queued=0,recved=1,sent=0)

/192.168.5.161:58754[1](queued=0,recved=39233,sent=39261)

Latency min/avg/max: 0/0/101

Received: 213109927

Sent: 213145531

Connections: 6

Outstanding: 0

Zxid: 0xa000301d0

Mode: leader

Node count: 17090

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper#  echo mntr | nc localhost 2181

zk_version    3.4.6--1, built on 06/16/2015 22:50 GMT

zk_avg_latency    0

zk_max_latency    101

zk_min_latency    0

zk_packets_received    213148668

zk_packets_sent    213184272

zk_num_alive_connections    6

zk_outstanding_requests    0

zk_server_state    leader

zk_znode_count    17090

zk_watch_count    4305

zk_ephemerals_count    20

zk_approximate_data_size    1831768

zk_open_file_descriptor_count    43

zk_max_file_descriptor_count    4096

zk_followers    3

zk_synced_followers    3

zk_pending_syncs    0

Controllare la configurazione di Zookeeper:

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper#  echo conf | nc localhost 2181

clientPort=2181

dataDir=/var/zookeeper/version-2

dataLogDir=/var/zookeeper/version-2

tickTime=3000

maxClientCnxns=60

minSessionTimeout=6000

maxSessionTimeout=60000

serverId=3

initLimit=10

syncLimit=3

electionAlg=3

electionPort=3888

quorumPort=2888

peerType=0

File di log di Zookeeper in una configurazione dinamica

In caso di problemi nei servizi di Zookeeper, questi file di log consentono di trovare le tracce:

- /var/log/zookeeper/zookeeper* - Gestisce i log archiviati, utili parole chiave di ricerca WARN, ERROR, Goodbye, Leader e così via.

- /var/log/springpath/zk-*

- /var/log/springpath/exhibitor.log

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper# grep -i leader /var/log/zookeeper/zookeeper.log*

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:59:26,088 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Leader@60] - TCP NoDelay set to: true

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:59:26,099 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Leader@358] - LEADING - LEADER ELECTION TOOK - 354

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:59:26,120 [myid:3] - INFO  [LearnerHandler-/192.168.5.164:36487:LearnerHandler@522] - Received NEWLEADER-ACK message from 0

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:59:26,120 [myid:3] - INFO  [LearnerHandler-/192.168.5.163:43451:LearnerHandler@522] - Received NEWLEADER-ACK message from 1

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:59:26,120 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Leader@943] - Have quorum of supporters, sids: [ 0,1,3 ]; starting up and setting last processed zxid: 0x100000000

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:59:26,272 [myid:3] - INFO  [WorkerReceiver[myid=3]:FastLeaderElection@597] - Notification: 1 (message format version), 3 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 2 (n.sid), 0x0 (n.peerEpoch) LEADING (my state)

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:59:26,291 [myid:3] - INFO  [LearnerHandler-/192.168.5.162:48778:LearnerHandler@486] - Sending snapshot last zxid of peer is 0x0  zxid of leader is 0x100000000sent zxid of db as 0x100000000

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:59:26,298 [myid:3] - INFO  [LearnerHandler-/192.168.5.162:48778:LearnerHandler@522] - Received NEWLEADER-ACK message from 2

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper# grep -i warn /var/log/zookeeper/zookeeper.log*

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:46:30,354 [myid:] - WARN  [main:QuorumPeerMain@113] - Either no config or no quorum defined in config, running  in standalone mode

/var/log/zookeeper/zookeeper.log.7:2016-10-14 22:52:55,238 [myid:] - WARN  [main:QuorumPeerMain@113] - Either no config or no quorum defined in config, running  in standalone mode

root@SpringpathControllerMSH7NHXRFL:/var/log/zookeeper# grep -i goodbye /var/log/zookeeper/zookeeper.log*

/var/log/zookeeper/zookeeper.log.1:2017-01-23 03:55:50,429 [myid:3] - WARN  [LearnerHandler-/192.168.5.163:44118:LearnerHandler@646] - ******* GOODBYE /192.168.5.163:44118 ********

/var/log/zookeeper/zookeeper.log.1:2017-01-24 23:30:14,956 [myid:3] - WARN  [LearnerHandler-/192.168.5.164:44720:LearnerHandler@646] - ******* GOODBYE /192.168.5.164:44720 ********

/var/log/zookeeper/zookeeper.log.3:2016-12-01 23:45:22,510 [myid:3] - WARN  [LearnerHandler-/192.168.5.164:44051:LearnerHandler@646] - ******* GOODBYE /192.168.5.164:44051 ********

/var/log/zookeeper/zookeeper.log.3:2016-12-08 00:36:37,752 [myid:3] - WARN  [LearnerHandler-/192.168.5.162:46577:LearnerHandler@646] - ******* GOODBYE /192.168.5.162:46577 ********

/var/log/zookeeper/zookeeper.log.4:2016-11-22 23:45:30,957 [myid:3] - WARN  [LearnerHandler-/192.168.5.163:49016:LearnerHandler@646] - ******* GOODBYE /192.168.5.163:49016 ********

/var/log/zookeeper/zookeeper.log.4:2016-11-23 00:03:59,397 [myid:3] - WARN  [LearnerHandler-/192.168.5.164:45952:LearnerHandler@646] - ******* GOODBYE /192.168.5.164:45952 ********

/var/log/zookeeper/zookeeper.log.4:2016-12-01 22:51:00,538 [myid:3] - WARN  [LearnerHandler-/192.168.5.163:45284:LearnerHandler@646] - ******* GOODBYE /192.168.5.163:45284 ********

/var/log/zookeeper/zookeeper.log.5:2016-11-10 23:39:47,477 [myid:3] - WARN  [LearnerHandler-/192.168.5.163:43576:LearnerHandler@646] - ******* GOODBYE /192.168.5.163:43576 ********

/var/log/zookeeper/zookeeper.log.5:2016-11-11 00:49:39,782 [myid:3] - WARN  [LearnerHandler-/192.168.5.164:35219:LearnerHandler@646] - ******* GOODBYE /192.168.5.164:35219 ********

Alcuni log di esempio - Registrazione di Zookeeper

2017-01-22 23:47:29,427 [myid:3] - INFO  [Thread-2:QuorumCnxManager$Listener@504] - My election bind port: /192.168.5.161:3888

2017-01-22 23:47:29,435 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:QuorumPeer@714] - LOOKING

2017-01-22 23:47:29,438 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@815] - New election. My id =  3, proposed zxid=0x9000a6b4d

2017-01-22 23:47:29,443 [myid:3] - INFO  [WorkerReceiver[myid=3]:FastLeaderElection@597] - Notification: 1 (message format version), 2 (n.leader), 0x800055ea0 (n.zxid), 0x1 (n.round), FOLLOWING (n.state), 0 (n.sid), 0x9 (n.peerEpoch) LOOKING (my state)

2017-01-22 23:47:29,444 [myid:3] - INFO  [WorkerReceiver[myid=3]:FastLeaderElection@597] - Notification: 1 (message format version), 2 (n.leader), 0x800055ea0 (n.zxid), 0x1 (n.round), FOLLOWING (n.state), 1 (n.sid), 0x9 (n.peerEpoch) LOOKING (my state)

2017-01-22 23:47:29,444 [myid:3] - INFO  [WorkerReceiver[myid=3]:FastLeaderElection@597] - Notification: 1 (message format version), 3 (n.leader), 0x9000a6b4d (n.zxid), 0x1 (n.round), LOOKING (n.state), 3 (n.sid), 0x9 (n.peerEpoch) LOOKING (my state)

2017-01-22 23:47:29,444 [myid:3] - INFO  [WorkerReceiver[myid=3]:FastLeaderElection@597] - Notification: 1 (message format version), 2 (n.leader), 0x800055ea0 (n.zxid), 0x1 (n.round), FOLLOWING (n.state), 1 (n.sid), 0x9 (n.peerEpoch) LOOKING (my state)

2017-01-22 23:47:29,445 [myid:3] - INFO  [WorkerReceiver[myid=3]:FastLeaderElection@597] - Notification: 1 (message format version), 2 (n.leader), 0x800055ea0 (n.zxid), 0x1 (n.round), LEADING (n.state), 2 (n.sid), 0x9 (n.peerEpoch) LOOKING (my state)

2017-01-22 23:47:29,445 [myid:3] - INFO  [WorkerReceiver[myid=3]:FastLeaderElection@597] - Notification: 1 (message format version), 2 (n.leader), 0x800055ea0 (n.zxid), 0x1 (n.round), FOLLOWING (n.state), 0 (n.sid), 0x9 (n.peerEpoch) LOOKING (my state)

2017-01-22 23:47:29,446 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:QuorumPeer@784] - FOLLOWING

2017-01-22 23:47:29,449 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Learner@86] - TCP NoDelay set to: true

2017-01-22 23:47:29,449 [myid:3] - INFO  [WorkerReceiver[myid=3]:FastLeaderElection@597] - Notification: 1 (message format version), 2 (n.leader), 0x800055ea0 (n.zxid), 0x1 (n.round), LEADING (n.state), 2 (n.sid), 0x9 (n.peerEpoch) FOLLOWING (my state)

2017-01-22 23:47:29,660 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:zookeeper.version=3.4.6--1, built on 06/16/2015 22:50 GMT

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:host.name=SpringpathControllerMSH7NHXRFL

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:java.version=1.7.0_79

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:java.vendor=Oracle Corporation

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:java.home=/usr/lib/jvm/java-7-openjdk-amd64/jre

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:java.class.path=/usr/share/zookeeper/bin/../build/classes:/usr/share/zookeeper/bin/../build/lib/*.jar:/usr/share/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/share/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/usr/share/zookeeper/bin/../lib/netty-3.7.0.Final.jar:/usr/share/zookeeper/bin/../lib/log4j-1.2.16.jar:/usr/share/zookeeper/bin/../lib/jline-0.9.94.jar:/usr/share/zookeeper/bin/../zookeeper-3.4.6.jar:/usr/share/zookeeper/bin/../src/java/lib/*.jar:/usr/share/zookeeper/bin/../conf:

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib/x86_64-linux-gnu/jni:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/usr/lib/jni:/lib:/usr/lib

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:java.io.tmpdir=/tmp

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:java.compiler=

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:os.name=Linux

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:os.arch=amd64

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:os.version=3.2.0-58-generic

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:user.name=root

2017-01-22 23:47:29,661 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:user.home=/root

2017-01-22 23:47:29,662 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Environment@100] - Server environment:user.dir=/usr/share/zookeeper

2017-01-22 23:47:29,662 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:ZooKeeperServer@162] - Created server with tickTime 3000 minSessionTimeout 6000 maxSessionTimeout 60000 datadir /var/zookeeper/version-2 snapdir /var/zookeeper/version-2

2017-01-22 23:47:29,663 [myid:3] - INFO  [QuorumPeer[myid=3]/0:0:0:0:0:0:0:0:2181:Follower@63] - FOLLOWING - LEADER ELECTION TOOK - 226

root@SpringpathControllerMSH7NHXRFL:/var/log/springpath# cat   zk-debug-storfs.log

2017-01-22 23:47:18,702:5866(0x7fd1f7ef5700):ZOO_INFO@check_events@1760: initiated connection to server [192.168.5.163:2181]

2017-01-22 23:47:18,704:5866(0x7fd1f7ef5700):ZOO_INFO@check_events@1807: session establishment complete on server [192.168.5.163:2181], sessionId=0x159165ff6310005, negotiated timeout=17001

2017-01-22 23:47:18,704:5866(0x7fd1f76f4700):ZOO_INFO@process_completions@2170: Calling a watcher for node s], type = s

2017-01-23 01:50:16,809:5866(0x7fd1f7ef5700):ZOO_ERROR@handle_socket_error_msg@1778: Socket [192.168.5.163:2181] zk retcode=-4, errno=112(Host is down): failed while receiving a server response

2017-01-23 01:50:16,818:5866(0x7fd1f76f4700):ZOO_INFO@process_completions@2170: Calling a watcher for node s], type = s

2017-01-23 01:50:16,818:5866(0x7fd1f7ef5700):ZOO_INFO@check_events@1760: initiated connection to server [192.168.5.164:2181]

2017-01-23 01:50:16,818:5866(0x7fd1f7ef5700):ZOO_ERROR@handle_socket_error_msg@1778: Socket [192.168.5.164:2181] zk retcode=-4, errno=112(Host is down): failed while receiving a server response

2017-01-23 01:50:17,819:5866(0x7fd1f7ef5700):ZOO_ERROR@handle_socket_error_msg@1740: Socket [192.168.5.162:2181] zk retcode=-4, errno=115(Operation now in progress): poll refused to accept read/write from the client

root@help:/var/log/springpath# cat zkEvents.log

INFO:ZkEvents:Send changes to listeners

INFO:EventDB:Received message{"timestamp": 1559200009008, "description": "Cluster policy compliance is satisfied", "id": "ClusterPolicyComplianceSatisfiedEvent"}

DEBUG:kazoo.client:Received EVENT: Watch(type=3, state=3, path=u'/zkEvents/lastModificationTime')

DEBUG:kazoo.client:Sending request(xid=42): GetData(path='/zkEvents/lastModificationTime', watcher= >)

DEBUG:kazoo.client:Received response(xid=42): ('{"timestamp": 1559200009009, "description": "Cluster is healthy", "id": "ClusterHealthNormalEvent"}', ZnodeStat(czxid=4294968021, mzxid=85899377486, ctime=1543045592975, mtime=1559200010730, version=465, cversion=0, aversion=0, ephemeralOwner=0, dataLength=99, numChildren=0, pzxid=4294968021))

INFO:ZkEvents:Version: 465, data: {"timestamp": 1559200009009, "description": "Cluster is healthy", "id": "ClusterHealthNormalEvent"}

INFO:ZkEvents:Send changes to listeners

INFO:EventDB:Received message{"timestamp": 1559200009009, "description": " Cluster is healthy", "id": "ClusterHealthNormalEvent"}

INFO:EventDB:Client(38) disconnected

INFO:EventDB:New client connected and was given id 39

INFO:EventDB:Client(39) disconnected

root@SpringpathControllerPZTMTRSH7K:/var/log/springpath# tail exhibitor.log

05-20 05:28:52.223 INFO org.mortbay.log - Started SocketConnector@10.197.252.99:8180

05-20 05:29:20.106 INFO com.netflix.exhibitor.core.activity.ActivityLog - State: down

05-20 05:29:20.106 INFO com.netflix.exhibitor.core.activity.ActivityLog - Attempting to stop instance

05-20 05:29:20.106 INFO com.netflix.exhibitor.core.activity.ActivityLog - Attempting to start/restart ZooKeeper

05-20 05:29:20.328 INFO com.netflix.exhibitor.core.activity.ActivityLog - jps didn't find instance - assuming ZK is not running

05-20 05:29:20.347 INFO com.netflix.exhibitor.core.activity.ActivityLog - Process started via: /usr/share/zookeeper/bin/zkServer.sh

05-20 05:29:20.353 ERROR com.netflix.exhibitor.core.activity.ActivityLog - ZooKeeper Server: ZooKeeper JMX enabled by default

05-20 05:29:20.353 ERROR com.netflix.exhibitor.core.activity.ActivityLog - ZooKeeper Server: Using config: /usr/share/zookeeper/bin/../conf/zoo.cfg

05-20 05:29:21.366 INFO com.netflix.exhibitor.core.activity.ActivityLog - ZooKeeper Server: Starting zookeeper ... STARTED

05-20 05:29:50.128 INFO com.netflix.exhibitor.core.activity.ActivityLog - State: serving

File di registro di Zookeeper da bundle di supporto (storfs)

In un pacchetto di supporto, questi sono file importanti da esaminare:

zookeeper.log                      /var/log/zookeeper

zk-storfs.log                      /var/log/springpath

echo_stat_|nc_localhost_2181.out   under cmds_output