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MLE-23437 - Add "cap_drop" with "NET_RAW" to Docker services to prevent Polaris issue. #211

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Merged
merged 1 commit into from
Aug 8, 2025
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MLE-23437 - Add "cap_drop" with "NET_RAW" to Docker services to prevent Polaris issue. #211

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25 changes: 25 additions & 0 deletions test-app/docker-compose.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,11 @@ services:
ports:
- "9092:9092"
- "9101:9101"

# The NET_RAW capability allows a process to create raw sockets. Polaris does not like that.
# This setting removes the NET_RAW capability from the container.
cap_drop:
- NET_RAW
environment:
KAFKA_NODE_ID: 1
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: 'CONTROLLER:PLAINTEXT,PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT'
Expand Down Expand Up @@ -43,6 +48,8 @@ services:
- broker
ports:
- "8081:8081"
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Copilot AI Aug 8, 2025

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[nitpick] Consider adding a comment explaining the purpose of dropping NET_RAW capability for consistency with the broker service, or alternatively, reference the comment on the broker service to avoid duplication.

Suggested change
- "8081:8081"
- "8081:8081"
# See broker service above for explanation of dropping NET_RAW capability.

Copilot uses AI. Check for mistakes.
cap_drop:
- NET_RAW
environment:
SCHEMA_REGISTRY_HOST_NAME: schema-registry
SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: 'broker:29092'
Expand All @@ -57,6 +64,8 @@ services:
- schema-registry
ports:
- "8083:8083"
cap_drop:
- NET_RAW
environment:
CONNECT_BOOTSTRAP_SERVERS: 'broker:29092'
CONNECT_REST_ADVERTISED_HOST_NAME: connect
Expand Down Expand Up @@ -91,6 +100,8 @@ services:
- ksqldb-server
ports:
- "9021:9021"
cap_drop:
- NET_RAW
environment:
CONTROL_CENTER_BOOTSTRAP_SERVERS: 'broker:29092'
CONTROL_CENTER_CONNECT_CONNECT-DEFAULT_CLUSTER: 'connect:8083'
Expand All @@ -113,6 +124,8 @@ services:
- connect
ports:
- "8088:8088"
cap_drop:
- NET_RAW
environment:
KSQL_CONFIG_DIR: "/etc/ksql"
KSQL_BOOTSTRAP_SERVERS: "broker:29092"
Expand All @@ -136,6 +149,8 @@ services:
- ksqldb-server
entrypoint: /bin/sh
tty: true
cap_drop:
- NET_RAW

ksql-datagen:
image: confluentinc/ksqldb-examples:7.6.1
Expand All @@ -153,6 +168,8 @@ services:
echo Waiting a few seconds for topic creation to finish... && \
sleep 11 && \
tail -f /dev/null'"
cap_drop:
- NET_RAW
environment:
KSQL_CONFIG_DIR: "/etc/ksql"
STREAMS_BOOTSTRAP_SERVERS: broker:29092
Expand All @@ -168,6 +185,8 @@ services:
- 8082:8082
hostname: rest-proxy
container_name: rest-proxy
cap_drop:
- NET_RAW
environment:
KAFKA_REST_HOST_NAME: rest-proxy
KAFKA_REST_BOOTSTRAP_SERVERS: 'broker:29092'
Expand All @@ -188,6 +207,8 @@ services:
- "8000-8002:8000-8002"
- "8010-8013:8010-8013"
- "8018-8019:8018-8019"
cap_drop:
- NET_RAW

# Copied from https://docs.sonarsource.com/sonarqube/latest/setup-and-upgrade/install-the-server/#example-docker-compose-configuration .
sonarqube:
Expand All @@ -204,6 +225,8 @@ services:
- sonarqube_logs:/opt/sonarqube/logs
ports:
- "9000:9000"
cap_drop:
- NET_RAW

postgres:
image: postgres:15-alpine
Expand All @@ -213,6 +236,8 @@ services:
volumes:
- postgresql:/var/lib/postgresql
- postgresql_data:/var/lib/postgresql/data
cap_drop:
- NET_RAW

volumes:
sonarqube_data:
Expand Down