Re: Backup and restore Solr 8.11.2 collections and configsets in Zookeeper version: 3.7.0
On Thu, Sep 22, 2022 at 4:06 PM Szalay-Bekő Máté wrote: > Hello Kaushal! > > One of my Solr colleagues just mentioned a possible solution. What about > using the solr admin script? With recursive option, like "solr zk -r" > > e.g. > > bin/solr zk cp -r file:/apache/confgs/whatever/conf zk:/configs/myconf -z > 111.222.333.444:2181 > > > https://solr.apache.org/guide/8_11/solr-control-script-reference.html#copy-between-local-files-and-zookeeper-znodes > > Isn't this what you are looking for? > > Best regards, > Máté > Thanks Mate and appreciate it. I will try it out and keep you posted. Thanks in advance. Best Regards, Kaushal
Zookeeper leader election for client read and write requests
Hi, I am running Zookeeper version: 3.7.0 ( 3 nodes -> 1 Leader and 2 Followers) on CentOS Linux release 7.9.2009 (Core). In an ensemble of 3 nodes with 1 leader and 2 followers, if the leader goes down then two servers can elect a leader among themselves. I have the below questions. 1. What is the algorithm used to elect the new leader between the remaining 2 followers? 2. During the leader elections process in place, does the client see a 503 service unavailable for all read or write requests? 3. In an ensemble of 3 nodes with 1 leader and 2 followers. Is there a way to see which node is serving read operations and which node is serving write operations? Please guide me. Any help will be highly appreciable. Thanks in advance. Best Regards, Kaushal
Backup and restore Solr 8.11.2 collections and configsets in Zookeeper version: 3.7.0
Hi, I am running Solr 8.11.2 (2 nodes) and Zookeeper version: 3.7.0 ( 3 nodes -> 1 Leader and 2 Followers) on Linux release 7.9.2009 (Core). Is there a way to back up the collections and configsets in Zookeeper version: 3.7.0 ( 3 nodes -> 1 Leader and 2 Followers) on Linux release 7.9.2009 (Core) as per the details below? #./zkCli.sh /bin/java Connecting to localhost:2181 Welcome to ZooKeeper! JLine support is enabled WATCHER:: WatchedEvent state:SyncConnected type:None path:null [zk: localhost:2181(CONNECTED) 0] ls / solrzookeeper [zk: localhost:2181(CONNECTED) 0] ls /solr/co *collections* *configs* [zk: localhost:2181(CONNECTED) 0] Thanks in advance. Please guide and I look forward to hearing from you. Best Regards, Kaushal
Re: TLS/SSL support to encrypt traffic between zookeeper nodes
Hi Andor, Thanks Andor for the email. Any dates planned to release 3.5.5 version? I do not see 3.5.5 version in https://zookeeper.apache.org/releases.html Thanks in Advance and i look forward to hearing from you. Best Regards, Kaushal
TLS/SSL support to encrypt traffic between zookeeper nodes
Hi, Is there a TLS/SSL support to encrypt traffic between zookeeper nodes (internode communication)? Thanks in Advance and i look forward to hearing from you. Best Regards, Kaushal
Leader elections between 2 nodes.
Hi, In a ensemble of 3 nodes with 1 leader and 2 followers, if the leader goes down then two servers can elect a leader among themselves. But we need odd numbers in order to form a quorum. I am confused. Please correct me if i am understanding it wrong. Any help will be highly appreciable Best Regards, Kaushal
Zookeeper is always CP or AP in terms of CAP theorem
Hi, I am reading the CAP theorem and zookeeper either satisfies CP or AP. I am not sure how do we take care of Availability property or Consistency property. Any examples to understand it better. Please help me understand if i am completely wrong? Thanks in Advance. Regards, Kaushal
Zab or Paxos Algorithm
Hi, Does zookeeper uses zab or paxos algorithm for leader election? Regards, Kaushal
Re: view number of zookeeper nodes in a single ensemble
Hi Chris, Thanks for the reply. I am using Zookeeper version 3.4.5. Is it available in this specific version? Regards, Kaushal On Wed, Dec 16, 2015 at 11:07 PM, Chris Nauroth wrote: > If you're using the dynamic reconfiguration feature available in the 3.5 > release line, then you might prefer to use the "config" CLI command. > Instead of the static configuration files, this command reads the current > dynamic configuration stored in the config znode. More details are > available here: > > http://zookeeper.apache.org/doc/r3.5.1-alpha/zookeeperReconfig.html#sc_reco > nfig_retrieving > > > --Chris Nauroth > > > > > On 12/14/15, 8:23 AM, "Jens Rantil" wrote: > > >Hi Kaushal, > > > >You can always execute > > > >$ grep '^server.' /etc/zookeeper/conf/zoo.cnf|wc -l > >3 > > > >on a server. > > > >Cheers, > >Jens > > > >On Mon, Dec 14, 2015 at 2:32 PM, Kaushal Shriyan > > > >wrote: > > > >> Hi, > >> > >> is there a way to see how many nodes are in a single ensemble? For > >>example > >> we have nodetool ring in Cassandra which shows the total number of > >>nodes in > >> local datacenter and across datacenters. > >> > >> Regards, > >> > >> Kaushal > >> > > > > > > > >-- > >Jens Rantil > >Backend engineer > >Tink AB > > > >Email: jens.ran...@tink.se > >Phone: +46 708 84 18 32 > >Web: www.tink.se > > > >Facebook <https://www.facebook.com/#!/tink.se> Linkedin > >< > http://www.linkedin.com/company/2735919?trk=vsrp_companies_res_photo&trkI > >nfo=VSRPsearchId%3A1057023381369207406670%2CVSRPtargetId%3A2735919%2CVSRPc > >mpt%3Aprimary> > > Twitter <https://twitter.com/tink> > >
view number of zookeeper nodes in a single ensemble
Hi, is there a way to see how many nodes are in a single ensemble? For example we have nodetool ring in Cassandra which shows the total number of nodes in local datacenter and across datacenters. Regards, Kaushal
Re: Multi DC ( DC-1 and DC-2) zookeeper setup
On Sun, Dec 13, 2015 at 8:21 AM, Camille Fournier wrote: > 2 members cannot form a quorum in a 5 node setup. > > You cannot guarantee a quorum split across two data centers will withstand > the loss of either data center. You must have a tiebreaker node in a third > data center. > > Thanks Camille for the email. Not sure if i understand it completely "You must have a tiebreaker node in a third data center." I will appreciate if you can provide me some examples to understand the concept. Regards, Kaushal
Re: Multi DC ( DC-1 and DC-2) zookeeper setup
On Sat, Dec 12, 2015 at 8:07 PM, Flavio Junqueira < fpjunque...@yahoo.com.invalid> wrote: > Hi Kaushal, > > See comments below: > > > On 12 Dec 2015, at 04:07, Kaushal Shriyan > wrote: > > > > Hi, > > > > I have couple of questions which are as below :- > > > > 1) In a 3 node single ensemble, i have 1 leader and 2 followers. when i > > explicitly shutdown down the leader for testing purpose, leader election > > triggers in between the remaining 2 nodes and i see that one of the node > > becomes a leader and the other is a follower. I am not sure if i > completely > > understood it. Since there are only 2 nodes how does leader election > happen > > because we need odd numbers in order to form a quorum. Please correct me > if > > i am understanding it wrong. > > > > You need an odd number of total members in the ensemble. If you have an > ensemble of 3, then you can tolerate one crashed server, which means that > your quorums have size two. That's why two servers can elect a leader among > them. > > In general, if n is the number of servers in the ensemble, then you can > tolerate f crashed servers and the relationship between n and f is n = 2f + > 1. > > > 2) Is it possible to configure 3 nodes each in DC1 and DC2? > > meaning 1 ensemble consists of 6 nodes with 3 nodes in DC-1 and 3 nodes > in > > DC-2 > > DC-1 1 Leader 2 Followers > > DC-2 1 Follower 2 Observers. > > > > if DC-1 goes down, will there be a leader election between 3 nodes in > DC-2? > > Please advise. > > No, the two observers won't participate in the election, and the remaining > participant in DC-2 will keep waiting for DC-1 to come back up. > > This question about tolerating a DC going down using a second DC is a > classic one. If we allowed DC-2 to elect a leader in the total absence of > processes of DC-1, then we would be prone to split brain scenarios: DC-1 > suspects DC-2 and vice-versa, but they are both up. If you want > availability when a DC going down, you need a third DC. Also, keep in mind > that availability here refers to both reads and writes. You can set it up > to go into read-only mode. > > -Flavio > > Thanks Flavio for a detailed explanation. Based on the explanation. If i lets say if i set the below config DC-1 1 Leader and 2 Followers DC-2 2 Followers and 1 observer Is this a good solution meaning 1 ensemble having 6 nodes. In my earlier setup it was *1 Follower and 2 Observers in DC-2*. Now i changed it in DC-2 2 Followers and 1 observer. In this case there are 2 Followers which will participate in the leader election to form a quorum. Please comment. Regarding "If you want availability when a DC going down, you need a third DC. Also, keep in mind that availability here refers to both reads and writes. You can set it up to go into read-only mode" you say set up the below configs for high availability. DC-1 1 Leader and 2 Followers DC-2 2 Followers and 1 observer DC-3 2 Followers and 1 observer. Please advise. Regards, Kaushal
Multi DC ( DC-1 and DC-2) zookeeper setup
Hi, I have couple of questions which are as below :- 1) In a 3 node single ensemble, i have 1 leader and 2 followers. when i explicitly shutdown down the leader for testing purpose, leader election triggers in between the remaining 2 nodes and i see that one of the node becomes a leader and the other is a follower. I am not sure if i completely understood it. Since there are only 2 nodes how does leader election happen because we need odd numbers in order to form a quorum. Please correct me if i am understanding it wrong. 2) Is it possible to configure 3 nodes each in DC1 and DC2? meaning 1 ensemble consists of 6 nodes with 3 nodes in DC-1 and 3 nodes in DC-2 DC-1 1 Leader 2 Followers DC-2 1 Follower 2 Observers. if DC-1 goes down, will there be a leader election between 3 nodes in DC-2? Please advise. Regards, Kaushal
Re: Use FQDN/cname instead of IP address
On Wed, Sep 30, 2015 at 3:26 AM, Kaushal Shriyan wrote: > Hi, > > I have a very specific question regarding configuring zookeeper reliable > distributed coordination system. While configuring can i use fully > qualified domain name / cname instead of IP address. If in case i want to > upgrade the server after a years time i can just point the fqdn name to the > new server ip. Do i need to take care of client connections/sessions for > dns ttl value? > > I will appreciate for the explanation. > > Regards, > > Kaushal > Hi, Checking in again if somebody can pitch in for help regarding my earlier post to this Mailing List? Regards, Kaushal
Use FQDN/cname instead of IP address
Hi, I have a very specific question regarding configuring zookeeper reliable distributed coordination system. While configuring can i use fully qualified domain name / cname instead of IP address. If in case i want to upgrade the server after a years time i can just point the fqdn name to the new server ip. Do i need to take care of client connections/sessions for dns ttl value? I will appreciate for the explanation. Regards, Kaushal
Re: Odd Number of Nodes spread across 3 Datacenter
Hi, While referring to http://whilefalse.blogspot.com.es/2012/12/building-global-highly-available.html and the description "ZooKeeper requires a majority (n/2 + 1) of servers to be available and able to communicate with each other in order to form a quorum" I suppose it is floor function and not ceiling function while referring to https://en.wikipedia.org/wiki/Floor_and_ceiling_functions#Examples. Please correct me if i am understanding it wrong? Regards, Kaushal On Tue, 11 Aug 2015 at 14:31 Flavio Junqueira wrote: > I don't think there is a straightforward answer to the question, but here > is some insight. > > If you use 3 servers with 3 data centers, you'll have one server per DC, > which means that upon a crash, the clients in some data center will have to > go remotely for reads. > > With 5 servers, at least one DC will have at most one server, which is a > bit better, but the DC with one server will have the problem that with the > one server crashing, the clients will need to go remotely for reads. > > 7 or 9 are better options, since you can have multiple nodes per DC to > serve local read traffic. > > I have used 5-7 per DC with flexible quorums in a system I worked on. > > -Flavio > > > On 11 Aug 2015, at 08:47, Kaushal Shriyan > wrote: > > > > Hi, > > > > I have a very basic question of setting up Zookeeper ensemble across 3 > > Datacenter. Since zookeeper quorum is based on odd number of nodes for > > Leader election. What would be the ideal odd number of nodes spread > across > > 3 Datacenter is it 3 or 5 or 7 or 9? if either of DC1 or DC2 or DC3 is > not > > reachable or degraded? > > > > DC1 meaning Datacenter 1 > > DC2 meaning Datacenter 2 > > DC3 meaning Datacenter 3 > > > > Any help will be highly appreciable. > > > > Regards, > > > > Kaushal > >
Odd Number of Nodes spread across 3 Datacenter
Hi, I have a very basic question of setting up Zookeeper ensemble across 3 Datacenter. Since zookeeper quorum is based on odd number of nodes for Leader election. What would be the ideal odd number of nodes spread across 3 Datacenter is it 3 or 5 or 7 or 9? if either of DC1 or DC2 or DC3 is not reachable or degraded? DC1 meaning Datacenter 1 DC2 meaning Datacenter 2 DC3 meaning Datacenter 3 Any help will be highly appreciable. Regards, Kaushal
Re: Meaning of quorum and ensemble
Thanks Chris for the explanation. Please help me understand how would I implement a 3 node or a 5 node ensemble in a AWS region for example Singapore Region which has two Availability Zone 1a and 1b if either of the zone becomes unavailable due to say for example Network Glitch or not reachable. Regards, Kaushal On 29 May 2015 23:41, "Chris Nauroth" wrote: > Hello Kaushal, > > 1. "Quorum" refers to the minimum number of nodes that must agree on a > transaction before it is considered committed. > 2. Yes, your understanding of ceil(N/2) is correct. It sounds like your > formulation of it is more like floor((N+1)/2). The two formulations are > equivalent, so whichever one is more intuitive to you is valid. > 3. "Ensemble" refers to the full set of peer servers in a ZooKeeper > cluster. > > Tying this back to your examples, a 3-node ensemble requires a quorum of 2 > servers running to commit a transaction. A 5-node ensemble requires a > quorum of 3 servers running to commit a transaction. An administrator can > deploy a ZooKeeper cluster sized according to trade-offs between budget > (number of servers) and desired fault tolerance (number of simultaneous > server failures). A more detailed discussion is available in the > ZooKeeper Internals document: > > http://zookeeper.apache.org/doc/r3.4.6/zookeeperInternals.html > > > I hope this helps. > > --Chris Nauroth > > > > > On 5/29/15, 10:08 AM, "Kaushal Shriyan" wrote: > > >Hi, > > > >I have a question regarding quorum in context to > > > http://stackoverflow.com/questions/13022244/zookeeper-reliability-three-ve > >rsus-five-nodes > > > >Zookeeper requires that you have a quorum of servers up, where quorum is > >ceil(N/2). For a 3 server ensemble, that means 2 servers must be up at any > >time, for a 5 server ensemble, 3 servers need to be up at any time. > > > > 1. what does quorum mean? > > 2. so does ceil(N/2) mean 3+1/2 = 4/2 which is 2 servers in context to > >3 > > server ensemble and 5+1/2 = 6/2 which is 3 servers in context to 5 > >server > > ensemble if the ceil(N/2) is a ceiling function? > > 3. what does ensemble mean in context to Apache zookeeper? > > > >I would appreciate your help. > > > >Regards, > > > >Kaushal > >
Meaning of quorum and ensemble
Hi, I have a question regarding quorum in context to http://stackoverflow.com/questions/13022244/zookeeper-reliability-three-versus-five-nodes Zookeeper requires that you have a quorum of servers up, where quorum is ceil(N/2). For a 3 server ensemble, that means 2 servers must be up at any time, for a 5 server ensemble, 3 servers need to be up at any time. 1. what does quorum mean? 2. so does ceil(N/2) mean 3+1/2 = 4/2 which is 2 servers in context to 3 server ensemble and 5+1/2 = 6/2 which is 3 servers in context to 5 server ensemble if the ceil(N/2) is a ceiling function? 3. what does ensemble mean in context to Apache zookeeper? I would appreciate your help. Regards, Kaushal
Problem reading snap file in zookeeper (version: 3.4.5-1392090)
Hi, I am encountering *problem reading snap file /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2c2b00* The zookeeper logs are as below:- Starting zookeeper ... STARTED 18,889 [myid:] - INFO [main:QuorumPeerConfig@101] - Reading configuration from: /mnt/zoouat4/conf/zookeeper/zoo.cfg 2014-07-04 01:25:18,895 [myid:] - INFO [main:QuorumPeerConfig@334] - Defaulting to majority quorums 2014-07-04 01:25:18,899 [myid:2] - INFO [main:DatadirCleanupManager@78] - autopurge.snapRetainCount set to 3 2014-07-04 01:25:18,899 [myid:2] - INFO [main:DatadirCleanupManager@79] - autopurge.purgeInterval set to 0 2014-07-04 01:25:18,899 [myid:2] - INFO [main:DatadirCleanupManager@101] - Purge task is not scheduled. 2014-07-04 01:25:18,911 [myid:2] - INFO [main:QuorumPeerMain@127] - Starting quorum peer 2014-07-04 01:25:18,932 [myid:2] - INFO [main:NIOServerCnxnFactory@94] - binding to port 0.0.0.0/0.0.0.0:2181 2014-07-04 01:25:18,946 [myid:2] - INFO [main:QuorumPeer@913] - tickTime set to 2 2014-07-04 01:25:18,947 [myid:2] - INFO [main:QuorumPeer@933] - minSessionTimeout set to -1 2014-07-04 01:25:18,947 [myid:2] - INFO [main:QuorumPeer@944] - maxSessionTimeout set to -1 2014-07-04 01:25:18,947 [myid:2] - INFO [main:QuorumPeer@959] - initLimit set to 10 *2014-07-04 01:25:18,959 [myid:2] - INFO [main:FileSnap@83] - Reading snapshot /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2c2b00* *2014-07-04 01:25:19,094 [myid:2] - WARN [main:FileSnap@96] - problem reading snap file /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2c2b00* *java.io.IOException: CRC corruption in snapshot : /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2c2b00* at org.apache.zookeeper.server.persistence.FileSnap.deserialize(FileSnap.java:91) at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:130) at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223) at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:417) at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:409) at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:151) at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111) at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78) 2014-07-04 01:25:19,095 [myid:2] - INFO [main:FileSnap@83] - Reading snapshot /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2b0176 2014-07-04 01:25:19,176 [myid:2] - WARN [main:FileSnap@96] - problem reading snap file /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2b0176 java.io.IOException: CRC corruption in snapshot : /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2b0176 at org.apache.zookeeper.server.persistence.FileSnap.deserialize(FileSnap.java:91) at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:130) at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223) at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:417) at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:409) at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:151) at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111) at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78) 2014-07-04 01:25:19,176 [myid:2] - INFO [main:FileSnap@83] - Reading snapshot /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2b013d 2014-07-04 01:25:19,224 [myid:2] - WARN [main:FileSnap@96] - problem reading snap file /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2b013d java.io.IOException: CRC corruption in snapshot : /mnt/zoouat4/data/zookeeper/data/version-2/snapshot.2b013d at org.apache.zookeeper.server.persistence.FileSnap.deserialize(FileSnap.java:91) at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:130) at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223) at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:417) at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:409) at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:151) at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111) at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78) 2014-07-04 01:25:19,225 [myid:2] - ERROR [main:QuorumPeer@453] - Unable to load database on disk java.io.IOException: Not able to find valid snapshots in /mnt/zoouat4/data/zookeeper/data/version-2 at org.apache.zookeeper.server.persistence.FileSnap.deserialize(FileSnap.java:105) at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:130) at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223)
Re: List nodes and sub nodes in zookeeper
On Wed, Dec 25, 2013 at 2:59 PM, Kaushal Shriyan wrote: > On Wed, Dec 25, 2013 at 2:56 PM, Raúl Gutiérrez Segalés < > r...@itevenworks.net> wrote: > >> On 24 December 2013 09:52, Kaushal Shriyan >> wrote: >> >> > Hi, >> > >> > Is there a way to list all the nodes and sub nodes on the command line >> in >> > Zookeeper ? >> > >> >> You can do this with zk_shell: >> >> $ pip install zk_shell >> $ zk-shell server:2181 --run-once "tree /" >> >> > Thanks Raul for the reply, Do i need to install zk_shell on the server > where zookeeper leader or observer process is running? > I am not sure if i understand it completely. > > Thanks and Regards, > > Kaushal > > Hi I am getting the below error zk-shell server:2181 --run-once "tree /" Traceback (most recent call last): File "/usr/bin/zk-shell", line 3, in from zk_shell.cli import CLI File "/usr/lib/python2.6/site-packages/zk_shell/cli.py", line 7, in from .shell import Shell File "/usr/lib/python2.6/site-packages/zk_shell/shell.py", line 50, in from .copy import copy, CopyError File "/usr/lib/python2.6/site-packages/zk_shell/copy.py", line 334 with src, dst: ^ SyntaxError: invalid syntax # zk-shell 127.0.0.1:2181 --run-once "tree /" Traceback (most recent call last): File "/usr/bin/zk-shell", line 3, in from zk_shell.cli import CLI File "/usr/lib/python2.6/site-packages/zk_shell/cli.py", line 7, in from .shell import Shell File "/usr/lib/python2.6/site-packages/zk_shell/shell.py", line 50, in from .copy import copy, CopyError File "/usr/lib/python2.6/site-packages/zk_shell/copy.py", line 334 with src, dst: ^ SyntaxError: invalid syntax ]# Thanks and Regards, Kaushal
Re: List nodes and sub nodes in zookeeper
On Wed, Dec 25, 2013 at 2:56 PM, Raúl Gutiérrez Segalés wrote: > On 24 December 2013 09:52, Kaushal Shriyan > wrote: > > > Hi, > > > > Is there a way to list all the nodes and sub nodes on the command line in > > Zookeeper ? > > > > You can do this with zk_shell: > > $ pip install zk_shell > $ zk-shell server:2181 --run-once "tree /" > > Thanks Raul for the reply, Do i need to install zk_shell on the server where zookeeper leader or observer process is running? I am not sure if i understand it completely. Thanks and Regards, Kaushal
List nodes and sub nodes in zookeeper
Hi, Is there a way to list all the nodes and sub nodes on the command line in Zookeeper ? Regards, Kaushal
