on 10-08-2014 5:11 AM
Hi All,
We have a clustering BOBJ environment (4.1 SP4) and I have installed explorer on both servers.
When I start explorer services, only one explorer master server is started, the other is stopped.
The error message says:
Stopping this Explorer Master server because Explorer Master servers cannot cluster together. It may be due to either IPv6 or 'master.cluster.name' Explorer application property variable not set or ports from 5701 to 57xx are blocked (where 'xx' is the number of Explorer Master servers and '5701' is the default value of 'master.cluster.multicast.port' property) or the network does not support multicast.
Could anyone tell me where to setup master.cluster.name ?
I have tried to setup this variable in default.settings.properties file under webapps\explorer\WEB-INF\classes folder, adding master.cluster.name=<clustername>, but not work.
Appreciate your help.
Regards,
Ryan
Please also be aware of the following SAP note:2078091
http://service.sap.com/sap/support/notes/2078091
Its possible that you are experiencing this defect which is being corrected.
Regards,
Brian
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
Any ideas, guys?
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
Hi,
Check 1906591 - Best practices for Explorer Master Server failover in a BI clustered environment SAP Note.
Amit
Hi Amit,
Thanks for your advice.
I have setup the parameters according to the Note 1906591
master.cluster.name=<cluster_name>
master.cluster.multicast.enabled=true
master.cluster.multicast.group=224.0.0.1
master.cluster.multicast.port=54327
However, I am still seeing the same error message.
I am wondering in terms of enabling multicast, what exactly configuration should I do?
- install IP multicast protocal?
- enable router multicast?
- enable LB multicast?
anything else that I need to configure?
Please advice.
Regards,
Ryan
Below is the reply from our network admin, so does this note means clustering of explorer master servers can work with tcp/ip in simple network environments like ours ?
Multicast is not enabled, but the below is from the link/sap note you provided:
http://service.sap.com/sap/support/notes/1906591
By default, the hazelcast library is configured to communicate via TCP/IP. The following configuration parameter will enable the clustering between Explorer Master servers in a BI Cluster: master.cluster.name=PROD (Where PROD is any string which uniquely identifies this environment)
In complex network environments, it may be required to enable multicast communication
So by default it should be using tcp/ip and not multicast. Multicast can be used in complex environment which a two system cluster which we have here is not. I advice doing this with the above mentioned default connection. Anything else will unnecessarily complicate things tremendously.
BTW, I have disabled IPv6, ports 5701 to 570x is not blocked by the firewall rules, multicast is enabled.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
User | Count |
---|---|
87 | |
23 | |
11 | |
9 | |
8 | |
5 | |
5 | |
5 | |
5 | |
4 |
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.