I have a docker-compose in which minio, minio/kes and vault talk together. Both minio/kes and vault need TLS, and I used self-signed method with IP address to create certificate for them. I use this command to generate certificate:
openssl req -x509 -nodes -days 7300 -newkey rsa:2048 -keyout server.key -out server.cert \
-subj "/C=/ST=/L=/O=/CN=localhost" -addext "subjectAltName = IP:127.0.0.1"
here is my docker-compose file:
version: '3.7'
services:
minio:
image: minio/minio:RELEASE.2021-02-01T22-56-52Z
container_name: minio
restart: always
volumes:
- /home/zahra/docker/minio/data:/data
- /home/zahra/docker/kes/certs:/root/.minio/kes/certs
ports:
- "9003:9000"
expose:
- "9003"
environment:
MINIO_ROOT_USER: minio
MINIO_ROOT_PASSWORD: minio123
MINIO_KMS_KES_ENDPOINT: https://minio-kes:7373
MINIO_KMS_KES_CERT_FILE: /root/.minio/kes/certs/client.cert
MINIO_KMS_KES_KEY_FILE: /root/.minio/kes/certs/client.key
MINIO_KMS_KES_CA_PATH: /root/.minio/kes/certs/server.cert
MINIO_KMS_KES_KEY_NAME: test-key
MINIO_KMS_AUTO_ENCRYPTION: 1
command: server /data
healthcheck:
test: [ "CMD", "curl", "-f", "http://localhost:9000/minio/health/live" ]
interval: 30s
timeout: 20s
retries: 3
networks:
- minio-network
minio-kes:
image: minio/kes:v0.19.2
container_name: minio-kes
restart: always
volumes:
- /home/zahra/docker/kes/certs:/root/.kes/certs
- /home/zahra/docker/kes/config:/root/.kes/config
- /home/zahra/docker/vault/certs:/root/.kes/vault/certs
environment:
- KES_SERVER=https://minio-vault:7373
- KES_CLIENT_KEY=/root/.kes/certs/client.key
- KES_CLIENT_CERT=/root/.kes/certs/client.cert
ports:
- "7373:7373"
command: server --config=/root/.kes/config/config.yaml --auth=off
expose:
- "7373"
networks:
- minio-network
depends_on:
- minio-vault
minio-vault:
image: vault:latest
container_name: minio-vault
ports:
- "8200:8200"
volumes:
- /home/zahra/docker/vault/file:/vault/file
- /home/zahra/docker/vault/config:/vault/config
- /home/zahra/docker/vault/certs:/vault/certs
- /home/zahra/docker/vault/policy:/vault/policy
environment:
- VAULT_ADDR=https://127.0.0.1:8200
- VAULT_SKIP_VERIFY=true
- VAULT_TOKEN=MY-TOKEN
cap_add:
- IPC_LOCK
entrypoint: vault server -config=/vault/config/config.json
networks:
- minio-network
networks:
minio-network:
driver: bridge
My problem is that inside docker, I have to use the container-name instead of the IP address of my services, so it gives me the following error: x509 :certificate is not valid for any names but wanted to match minio-kes or x509 :certificate is not valid for any names but wanted to match minio-vault.
minio-kes and minio-kes are my container names.
I tried to replace the common name (CN) while generating the certificate with the name of my container, but again it didn’t work. For example:
openssl req -x509 -nodes -days 7300 -newkey rsa:2048 -keyout server.key -out server.cert \
-subj "/C=/ST=/L=/O=/CN=minio-kes" -addext "subjectAltName = IP:127.0.0.1"
I don’t know how I should generate certificate in order to work inside docker.