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https://issues.apache.org/jira/browse/CASSANDRA-14582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17310206#comment-17310206
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vincent royer edited comment on CASSANDRA-14582 at 3/28/21, 1:35 PM:
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Hi,
Add an optional system property "*cassandra.host_id"* allowing to configure the
cassandra host id at the first start instead of getting a random one.
When running cassandra in k8s, each node can have a datacenter index and a rack
index encoded in the host ID, like XXXX-XXXXXX-000001-000002 for node of
datacenter 00001 in rack index 02, and a random XXXX-XXXXXX. Replacing a node
is just simple then, when starting a node with an empty data disk, if a node is
DEAD in the cluster with the same DC and Rack index in the hostId, start the
node with the replace.address_on_first_boot set.
was (Author: vroyer59):
Hi,
Add an optional system property "*cassandra.host_id"* allowing to configure the
cassandra host id at the first start instead of getting a random one.
When running cassandra in k8s, each node can have a datacenter index and a rack
index encode in the host ID, like XXXX-XXXXXX-000001-000002 for node of
datacenter 00001 with rack index 02, and a random XXXX-XXXXXX. Replacing a node
is just simple then, when starting a node with an empty data disk, if a node is
DEAD in the cluster with the same DC and Rack index in the hostId, start the
node with the replace.address_on_first_boot set.
> Add a system property to set the cassandra hostId if not yet initialized
> ------------------------------------------------------------------------
>
> Key: CASSANDRA-14582
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14582
> Project: Cassandra
> Issue Type: Improvement
> Components: Local/Config
> Reporter: vincent royer
> Priority: Low
> Labels: lhf
>
> Add a system property *cassandra.host_id* to set the cassandra hostId if not
> yet initialized.
> This allow to push the cassandra host ID when provisioning new cassandra
> nodes rather than to retreive it after the first start.
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