I'm trying to set up a Cassandra multi node cluster in my computer just to test, but it seems not work... The Cassandra version is 1.1 and It runs on Ubuntu.
Fist of all, I've modified the cassandra.yaml file for each node as follows:
node0
initial_token: 0
seeds: "127.0.0.1"
listen_address: 127.0.0.1
rpc_address: 0.0.0.0
endpoint_snitch: RackInferringSnitch
node1
same as node0 exept for:
initial_token: 28356863910078205288614550619314017621 (get using
cassandra token generator)
listen_address: 127.0.0.2
After that, I've started first the seed node 127.0.0.1 and, once the node is up, I've started the other node 127.0.0.2. I've got the following:
[...]
INFO 06:09:27,146 Listening for thrift clients...
INFO 06:09:27,909 Node /127.0.0.1 is now part of the cluster
INFO 06:09:27,911 InetAddress /127.0.0.1 is now UP
INFO 06:09:27,913 Nodes /127.0.0.1 and /127.0.0.2 have the same token 0. Ignoring /127.0.0.1
Running nodetool -h localhost ring it shows:
Address: 127.0.0.2
DC: datacenter1
Rack: rack1
Status: Up
State: Normal
Load: 11,21 KB
Owns: 100,00%
Token: 0
As you can see, only the information of the second node is showed owning 100% of the ring. Indeed, the token is initialized to 0 instead of to the value I defined at its cassandra.yaml file.
The gossip Info is:
/127.0.0.2
LOAD:25559.0
STATUS:NORMAL,0
SCHEMA:59adb24e-f3cd-3e02-97f0-5b395827453f
RELEASE_VERSION:1.1.6-SNAPSHOT
RPC_ADDRESS:0.0.0.0
/127.0.0.1
LOAD:29859.0
STATUS:NORMAL,0
SCHEMA:59adb24e-f3cd-3e02-97f0-5b395827453f
RELEASE_VERSION:1.1.6-SNAPSHOT
RPC_ADDRESS:0.0.0.0
Does anyone know what is happening and how can I fix it?
Thank you so much in advance!!
initial_token is only checked at first startup, when it is written to a system table. Delete the system table files and restart.
Related
I am keep getting below error when I tried to run single node or multinode Cassandra cluster.
Single node cluster with default config works fine, however nodetool staus shows 127.0.0.1 as IP Address.
After changing listen_address: 192.168.1.143 (this is my ip address) on cassandra.yaml file I am getting below error.
Exception (java.lang.RuntimeException) encountered during startup: Unable to gossip with any peers
java.lang.RuntimeException: Unable to gossip with any peers
at org.apache.cassandra.gms.Gossiper.doShadowRound(Gossiper.java:1443)
at org.apache.cassandra.service.StorageService.checkForEndpointCollision(StorageService.java:547)
at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:804)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:664)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:613)
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:379)
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:602)
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:691)
Well, after trying different approaches finally I was able to resolve it and able to run single and 3 node cluster.
Below are the configuration changes you need to make on cassandra.yaml file
First Node
--------------
listen_address: 192.168.1.143 (This should be your server/node IP)
seeds: "192.168.1.143" (For your first node please mention your node IP address)
Second Node
---------------
listen_address: 192.168.1.144 (This should be your server/node IP)
seeds: "192.168.1.143" (specify your first node IP, additionally, you can also mention current IP address ,192.168.1.144)
Third Node
---------------
listen_address: 192.168.1.145 (This should be your server/node IP)
seeds: "192.168.1.143" (specify your first/second node IP, additionally, you can also mention current IP address ,192.168.1.145)
After starting cassandra on all 3 servers, nodetool status returned the following
Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID Rack
UN 192.168.1.143 258.83 KiB 256 100.0% 7b3a0644-c8dd-4a47-9186-0237f3725941 rack1
UN 192.168.1.144 309.71 KiB 256 100.0% e7a11a60-d795-47ee-8d21-7cc21b4cbdca rack1
UN 192.168.1.145 309.71 KiB 256 100.0% b2a4545a-f279-r5h7-2fy6-23dk8fg5c8kq rack1
Hope this helps!!
Yes, for joining cassandra cluster first time. you should start seed node first then other nodes.
I have two Ubuntu 16.04 nodes on which I installed Cassandra 3.11.3 with java version "1.8.0_181". I want to merge these two nodes into a Cassandra cluster. Their intern ips are 172.16.10.20 and 172.16.10.30.
on each /etc/cassandra/cassandra.yaml file I modified the following lines:
cluster_name: 'my_cluster'
- seeds: "172.16.10.20,172.16.10.30"
listen_address: XXXX
rpc_address: XXXX
where XXXX is respectively the intern ip of the current node.
I then restart Cassandra on each node
sudo service cassandra restart
and check that Cassandra runs :
sudo service cassandra status
cassandra.service - LSB: distributed storage system for structured data
Loaded: loaded (/etc/init.d/cassandra; generated)
Active: active (running) since Wed 2018-08-08 00:31:42 UTC; 3s ago
Docs: man:systemd-sysv-generator(8)
and the cluster
nodetool status
Datacenter: dc1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID Rack
UN 172.16.10.20 190.11 KiB 256 100.0% 84dded4c-c74e-45f4-9481-ff837fec229d rack1
UN 172.16.10.30 265.06 KiB 256 100.0% 4695fef4-70c7-46b2-a0bd-8b752fe5beb6 rack1
Everything is up and normal.
I want to connect now to Cassandra:
cqlsh
and get:
Connection error: ('Unable to connect to any servers', {'127.0.0.1': error(111, "Tried connecting to [('127.0.0.1', 9042)]. Last error: Connection refused")})
Some googling later, I want to start cassandra by hand
cassandra
and get (among a huge message):
ERROR [main] 2018-08-07 23:02:51,365 CassandraDaemon.java:708 - Port already in use: 7199; nested exception is:
java.net.BindException: Address already in use (Bind failed)
It looks like the port 7199 is already in use. I kill the corresponding pid, change in /etc/cassandra/cassandra-env.sh the JMX_PORT to 7200... same issue, the port is said to be in use, plus the error
00:33:06,236 |-ERROR in ch.qos.logback.core.rolling.RollingFileAppender[SYSTEMLOG] - openFile(/var/log/cassandra/system.log,true) call failed. java.io.FileNotFoundException: /var/log/cassandra/system.log (Permission denied)
I have changed the permission, but the error remains. At this point of the story I am running out of ideas. What I am trying to achieve seem pretty straighforward so I guess others must have run into a similar issue.
The nodetool status output says it all here. You had everything running just fine. So revert any changes in terms of port usage.
As your nodetool status reveals that your node IPs are 172.16.10.20 and 172.16.10.30, try running cqlsh and providing one of those IPs. cqlsh tries to connect to 127.0.0.1 by default, which will not work in a plural node cluster.
cqlsh 172.16.10.20 -u yourusername -p yourpassword
Note: You can omit -u and -p if you don't have auth enabled. But if that's true, then you should really change your cluster to enable auth.
I installed Data Stax 3.7 on my Windows machine(IP:10.175.12.249) and made following changes in my cassandra.yaml file:
cluster_name: 'Test_cluster'
listen_address: "10.175.12.249"
start_rpc: true
rpc_address: "0.0.0.0"
broadcast_rpc_address: "10.175.12.249"
seeds: "10.175.12.249"
endpoint_snitch: SimpleSnitch
Now, I started the service and cassandra is running fine on seed node.
I tried adding another node to my cluster. So I installed Data Stax 3.7 on another Windows machine(IP:192.168.158.78) and made following changes in cassandra.yaml file:
cluster_name: 'Test_cluster'
listen_address: "192.168.158.78"
start_rpc: true
rpc_address: "0.0.0.0"
broadcast_rpc_address: "192.168.158.78"
seeds: "10.175.12.249"
endpoint_snitch: SimpleSnitch
Now when I started the cassandra service on my 2nd machine, I am getting the following error:
INFO 09:41:27 Cassandra version: 3.7.0
INFO 09:41:27 Thrift API version: 20.1.0
INFO 09:41:27 CQL supported versions: 3.4.2 (default: 3.4.2)
INFO 09:41:27 Initializing index summary manager with a memory pool size of 100 MB and a resize interval of 60 minutes
INFO 09:41:27 Starting Messaging Service on /192.168.158.78:7000 (Intel(R) Centrino(R) Advanced-N 6235)
INFO 09:41:27 Scheduling approximate time-check task with a precision of 10 milliseconds
Exception (java.lang.RuntimeException) encountered during startup: Unable to gossip with any seeds
java.lang.RuntimeException: Unable to gossip with any seeds
at org.apache.cassandra.gms.Gossiper.doShadowRound(Gossiper.java:1386)
at org.apache.cassandra.service.StorageService.checkForEndpointCollision(StorageService.java:561)
at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:855)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:725)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:625)
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:370)
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:585)
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:714)
ERROR 09:41:58 Exception encountered during startup
java.lang.RuntimeException: Unable to gossip with any seeds
at org.apache.cassandra.gms.Gossiper.doShadowRound(Gossiper.java:1386) ~[apache-cassandra-3.7.0.jar:3.7.0]
at org.apache.cassandra.service.StorageService.checkForEndpointCollision(StorageService.java:561) ~[apache-cassandra-3.7.0.jar:3.7.0]
at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:855) ~[apache-cassandra-3.7.0.jar:3.7.0]
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:725) ~[apache-cassandra-3.7.0.jar:3.7.0]
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:625) ~[apache-cassandra-3.7.0.jar:3.7.0]
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:370) [apache-cassandra-3.7.0.jar:3.7.0]
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:585) [apache-cassandra-3.7.0.jar:3.7.0]
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:714) [apache-cassandra-3.7.0.jar:3.7.0]
WARN 09:41:58 No local state or state is in silent shutdown, not announcing shutdown
INFO 09:41:58 Waiting for messaging service to quiesce
Below is the output of nodetool status on seed node(IP:10.175.12.249):
C:\Program Files\DataStax-DDC\apache-cassandra\bin>nodetool status
Datacenter: datacenter1
========================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID Rack
DN 192.168.158.78 ? 256 68.1% 6bc4e927-3def-4dfc-b5e7-31f5882ce475 rack1
UN 10.175.12.249 257.76 KiB 256 65.7% 300d731e-a27c-4922-aacc-6d42e8e49151 rack1
Thanks!!!
The - seeds: in conf/cassandra.yaml should have the same value (same IP or the hostname) as listen_address: in the same conf file.
I came across this error when the IP addresses were not matching. Try keeping the same and restart the cluster. Hope this helps...
The system is Linux 14.04.1-Ubuntu x86_64, 200GB space, 8GB memory. Everything is done in both root and user. We installed the Cassandra version 3.6.0 from datastax using the following command (followed the instruction from website: http://docs.datastax.com/en/cassandra/3.x/cassandra/install/installDeb.html):
$ apt-get update
$ apt-get install datastax-ddc
However, the cassandra is not started as service.
root#e7:~# nodetool status
nodetool: Failed to connect to '127.0.0.1:7199' - ConnectException: 'Connection refused'.
root#e7:~# service cassandra start
root#e7:~# service cassandra status
* Cassandra is not running
We can start Cassandra manually using the command:
$ cassandra -R -f
...
INFO 18:45:02 Starting listening for CQL clients on /127.0.0.1:9042 (unencrypted)...
INFO 18:45:02 Binding thrift service to /127.0.0.1:9160
INFO 18:45:02 Listening for thrift clients...
INFO 18:45:12 Scheduling approximate time-check task with a precision of 10 milliseconds
root#e7:~# nodetool status
Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID Rack
UN 127.0.0.1 153.45 KiB 256 100.0% 28ba16df-1e4c-4a40-a786-ebee140364bf rack1
However, we have to start cassandra as a service. Any suggestions how to fix the problem?
Try using http://docs.datastax.com/en/cassandra/3.0/cassandra/install/installDeb.html
This is more stable and I have tried it.
I think the ports are not opened.
Try opening the following ports:
Cassandra inter-node ports
Port number Description
7000 Cassandra inter-node cluster communication.
7001 Cassandra SSL inter-node cluster communication.
7199 Cassandra JMX monitoring port.
Cassandra client port
Port number Description
9042 Cassandra client port.
9160 Cassandra client port (Thrift).
Also what type of Snitch is defined in the Cassandra.yaml file ?
I am using mac osx. i created 3 virtual box by virtualbox. I've installed centos7 minimal version on each of the virtual box.
Then i installed cassandra on each of the box. After installation it was starting by cqlsh and nodetool status command.
But after then when i was trying to link each other and edit cassandra.yaml file its started showing
('Unable to connect to any servers', {'127.0.0.1': error(111, "Tried connecting to [('127.0.0.1', 9042)]. Last error: Connection refused")})
i've edited the cassandra.yaml file as follows:
cluster_name: 'Home Cluster'
num_tokens: 256
partitioner: org.apache.cassandra.dht.Murmur3Partitioner
- seeds: "192.168.56.102,192.168.56.103"
storage_port: 7000
listen_address: 192.168.56.102
rpc_address: 192.168.56.102
rpc_port: 9160
endpoint_snitch: SimpleSnitch
my /etc/hosts file contains:
192.168.56.102 node01
192.168.56.103 node02
192.168.56.104 node03
Please tell me whats wrong i'm doing? My cassandra cluster not working.
solution: I got the solution from AKKI. The problem was enpoint_snitch. I made the endpoint_snitch=GossipingPropertyFileSnitch and it fixed. My now output is as follows:
[root#dbnode2 ~]# nodetool status
Datacenter: dc1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID Rack
UN 192.168.56.101 107.38 KB 256 62.5% 0526a2e1-e6ce-4bb4-abeb-b9e33f72510a rack1
UN 192.168.56.102 106.85 KB 256 73.0% 0b7b76c2-27e8-490f-8274-571d00e60c20 rack1
UN 192.168.56.103 83.1 KB 256 64.5% 6c8d80ec-adbb-4be1-b255-f7a0b63e95c2 rack1
I had faced similar problem,
I tried the following solution:
In Cassandra.yaml file check if you have,
start_rpc = true
Changed my endpoint snitch to
endpoint_snitch: GossipingFilePropertySnitch
Opened all ports Cassandra uses on my CentOS
Cassandra inter-node ports
Port number Description
7000 Cassandra inter-node cluster communication.
7001 Cassandra SSL inter-node cluster communication.
7199 Cassandra JMX monitoring port.
Cassandra client port
Port number Description
9042 Cassandra client port.
9160 Cassandra client port (Thrift).
Command to open ports on CentOs 7(Find it according to your OS):
>sudo firewall-cmd --zone=public --add-port=9042/tcp --permanent
>sudo firewall-cmd –reload
Then Restart your systems
Also it seems that you are changing the Cassandra.Yaml file after starting cassandra.
Make sure you edit your Cassandra.yaml file on all nodes before starting Cassandra
Also remember to start the seed node first.