Arseniy Tashoyan created FLINK-29145:
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Summary: docker-entrypoint.sh - Read-only file system
Key: FLINK-29145
URL: https://issues.apache.org/jira/browse/FLINK-29145
Project: Flink
Issue Type: Bug
Components: Kubernetes Operator
Affects Versions: 1.15.2, 1.16.0
Reporter: Arseniy Tashoyan
When running a FlinkDeployment, we can see error messages:
{code:none}
sed: couldn't open temporary file /opt/flink/conf/sedHIUGh6: Read-only file
system
sed: couldn't open temporary file /opt/flink/conf/sedNALzes: Read-only file
system
/docker-entrypoint.sh: line 73: /opt/flink/conf/flink-conf.yaml: Read-only file
system
/docker-entrypoint.sh: line 89: /opt/flink/conf/flink-conf.yaml.tmp: Read-only
file system
{code}
The script _docker-entrypoint.sh_ tries to modify some settings in
_flink-conf.yaml_, despite this file mounted read-only from a ConfigMap.
Such on-the-fly config modifications make no sense for deployments in
Kubernetes. Instead we specify Flink settings via the _flinkConfiguration_
setting in the FlinkDeployment descriptor.
In addition, _docker-entrypoint.sh_ tries to modify a deprecated setting
_query.server.port_:
{code:bash}
set_config_option query.server.port 6125
{code}
The setting query.server.port is deprecated in favor of
_queryable-state.server.ports_:
https://nightlies.apache.org/flink/flink-docs-master/docs/dev/datastream/fault-tolerance/queryable_state/#state-server
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