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https://issues.apache.org/jira/browse/TRAFODION-1885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15193571#comment-15193571
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Trina Krug commented on TRAFODION-1885:
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Initial Configuration/Pre-work:
<Trafodion stopped>
* A static initial configuration can be made to include a larger set of nodes
than what will initially be used. The node names do not need to be known as
those can be changed at a later date through the shell.
* The sqconfig file will need to contain the max number of configurable nodes
* an Environment variable (TRAF_EXCLUDE_LIST) will be set in
/etc/trafodion/trafodion_config and contain a list of space separated node
names to be excluded upon in initial startup (TRAF_EXCLUDE_LIST=nodenameX
nodenameY...). Each node needs an up to date version of this file.
* the DCS servers file will need to be modified to include only those active
nodes at initial startup time ($DCS_INSTALL_DIR/conf/servers). Each nodes
needs an up to date version of this file.
<Trafodion can be started>
To add a node online:
* Modify TRAF_EXCLUDE_LIST to remove a node (one at a time) that you will be
adding. Make sure any shell you use after this point is fresh and has the
updated TRAF_EXCLUDE_LIST in its latest form.
* With “sqshell -a”, now reintegrate the new node into the cluster by issuing
an “up nodename” command
* Repeat steps 2 and 3 for each new node. Please wait a few minutes between
adding nodes to give the cluster a chance to settle.
* Modify dcs servers file ($DCS_INSTALL_DIR/conf/servers) to include the
hostname of the new nodes along with the count of servers that need to be
started on the new nodes and copy the servers file to all nodes in the cluster.
With the help of ‘$DCS_INSTALL_DIR/bin/dcs-daemons.sh start server’ command you
can start additional DcsServer and mxosrvrs on the newly added nodes without
effecting the mxosrvrs that are already up and running. Verify by issuing
‘dcscheck’ command which will display the count of all DcsServers and mxosrvrs
in the cluster
> Online node expansion
> ---------------------
>
> Key: TRAFODION-1885
> URL: https://issues.apache.org/jira/browse/TRAFODION-1885
> Project: Apache Trafodion
> Issue Type: Improvement
> Components: foundation
> Reporter: Trina Krug
> Assignee: Trina Krug
>
> Need the ability to add nodes without an outage.
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