Serverless Offline - ECONNREFUSED Elasticmq with Docker-Compose - docker

I am trying to work on a webscraper using the Serverless Framework that I want to be easily ran locally by users without having to install any necessary depedencies on their local machine. I am using serverless-offline-sqs with a local Elasticmq server hosted on a Docker container.
Currently, I have a docker-compose file that I run, then run serverless offline in another terminal which works well. That docker-compose.yml file looks like this:
# docker-compose.yml
version: '3'
services:
database:
image: 'mongo'
container_name: 'database'
environment:
- MONGO_INITDB_DATABASE=scraper_database
- MONGO_INITDB_ROOT_USERNAME=admin
- MONGO_INITDB_ROOT_PASSWORD=admin
volumes:
- ./init-mongo.js:/docker-entrypoint-initdb.d/init-mongo.js:ro
- ./mongo-volume:/data/db
ports:
- '27017-27019:27017-27019'
command: mongod --quiet --logpath /dev/null
sqs:
image: softwaremill/elasticmq:latest
container_name: 'sqs'
ports:
- '9324:9324'
sqs-create:
image: infrastructureascode/aws-cli:latest
container_name: 'sqs-create'
links:
- sqs
entrypoint: sh
command: ./create-queues.sh
volumes:
- ./scripts/create-queues.sh:/project/create-queues.sh:ro
environment:
- AWS_ACCESS_KEY_ID=local
- AWS_SECRET_ACCESS_KEY=local
- AWS_DEFAULT_REGION=eu-east-1
- AWS_ENDPOINT_URL=http://sqs:9324
This works well with no issues, and after ensuring that all of my containers are up, I can run serverless offline and my app works. I am trying to also include the act of running Serverless in its own docker container. I have created the following Dockerfile:
# Dockerfile
FROM node:12
RUN npm --loglevel=error install -g serverless && npm --loglevel=error install -g serverless-offline
WORKDIR /usr/src/app
COPY package*.json ./
COPY ./scripts/wait-for-it.sh ./
RUN ["chmod", "+x", "/usr/src/app/wait-for-it.sh"]
RUN npm install
COPY . .
EXPOSE 3000
I am trying to follow the Docker documentation for affecting the start-up order, found here to ensure that my queue service is up before running this. This has led me to this docker-compose.yml:
version: '3'
services:
serverless:
container_name: 'serverless'
build:
context: .
dockerfile: Dockerfile
env_file:
- .env.development
ports:
- '3000:3000'
depends_on:
- sqs
command: ["./wait-for-it.sh", "sqs:9324", "--", "serverless", "offline"]
database:
image: 'mongo'
container_name: 'database'
environment:
- MONGO_INITDB_DATABASE=scraper_database
- MONGO_INITDB_ROOT_USERNAME=admin
- MONGO_INITDB_ROOT_PASSWORD=admin
volumes:
- ./init-mongo.js:/docker-entrypoint-initdb.d/init-mongo.js:ro
- ./mongo-volume:/data/db
ports:
- '27017-27019:27017-27019'
command: mongod --quiet --logpath /dev/null
sqs:
image: softwaremill/elasticmq:latest
container_name: 'sqs'
ports:
- '9324:9324'
sqs-create:
image: infrastructureascode/aws-cli:latest
container_name: 'sqs-create'
links:
- sqs
entrypoint: sh
command: ./create-queues.sh
volumes:
- ./scripts/create-queues.sh:/project/create-queues.sh:ro
environment:
- AWS_ACCESS_KEY_ID=local
- AWS_SECRET_ACCESS_KEY=local
- AWS_DEFAULT_REGION=eu-east-1
- AWS_ENDPOINT_URL=http://sqs:9324
I am using the wait-for-it.sh script which the Docker documentation suggests, but it says that I am getting the following error:
Successfully built 38df0769a202
Successfully tagged assessorscraper_serverless:latest
Starting sqs ... done
Starting database ... done
Recreating serverless ... done
Starting sqs-create ... done
Attaching to sqs, database, sqs-create, serverless
serverless | wait-for-it.sh: waiting 15 seconds for sqs:9324
sqs | 07:54:45.046 [main] INFO org.elasticmq.server.Main$ - Starting ElasticMQ server (1.0.0) ...
sqs | 07:54:48.133 [elasticmq-akka.actor.default-dispatcher-6] INFO akka.event.slf4j.Slf4jLogger - Slf4jLogger started
sqs | 07:54:51.385 [elasticmq-akka.actor.default-dispatcher-7] INFO o.e.rest.sqs.TheSQSRestServerBuilder - Started SQS rest server, bind address 0.0.0.0:9324, visible server address http://localhost:9324
sqs | 07:54:51.643 [elasticmq-akka.actor.default-dispatcher-7] INFO o.e.r.s.TheStatisticsRestServerBuilder - Started statistics rest server, bind address 0.0.0.0:9325
sqs | 07:54:51.649 [main] INFO org.elasticmq.server.Main$ - === ElasticMQ server (1.0.0) started in 8819 ms ===
serverless | wait-for-it.sh: sqs:9324 is available after 9 seconds
sqs-create | Creating queue TownQueue
sqs | 07:54:53.808 [elasticmq-akka.actor.default-dispatcher-6] INFO o.elasticmq.actor.QueueManagerActor - Creating queue QueueData(TownQueue,MillisVisibilityTimeout(30000),PT0S,PT0S,2021-01-07T07:54:53.494Z,2021-01-07T07:54:53.494Z,None,false,false,None,None,Map())
sqs-create exited with code 0
serverless | Serverless: Running "serverless" installed locally (in service node_modules)
serverless | Serverless: DOTENV: Loading environment variables from .env.development:
serverless | Serverless: - DATABASE_URL
serverless | Serverless: - ACCOUNT_ID
serverless | Serverless: - QUEUE_URL
serverless | Serverless: Deprecation warning: Starting with next major version, default value of provider.lambdaHashingVersion will be equal to "20201221"
serverless | More Info: https://www.serverless.com/framework/docs/deprecations/#LAMBDA_HASHING_VERSION_V2
serverless | Serverless: Deprecation warning: Starting with next major version, API Gateway naming will be changed from "{stage}-{service}" to "{service}-{stage}".
serverless | Set "provider.apiGateway.shouldStartNameWithService" to "true" to adapt to the new behavior now.
serverless | More Info: https://www.serverless.com/framework/docs/deprecations/#AWS_API_GATEWAY_NAME_STARTING_WITH_SERVICE
serverless | offline: Error: connect ECONNREFUSED 0.0.0.0:9324
serverless | at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1144:16)
serverless |
serverless | Networking Error ---------------------------------------
serverless |
serverless | Error: connect ECONNREFUSED 0.0.0.0:9324
serverless | at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1144:16)
serverless |
serverless | For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.
serverless |
serverless | Get Support --------------------------------------------
serverless | Docs: docs.serverless.com
serverless | Bugs: github.com/serverless/serverless/issues
serverless | Issues: forum.serverless.com
serverless |
serverless | Your Environment Information ---------------------------
serverless | Operating System: linux
serverless | Node Version: 12.20.1
serverless | Framework Version: 2.17.0 (local)
serverless | Plugin Version: 4.4.1
serverless | SDK Version: 2.3.2
serverless | Components Version: 3.4.4
serverless |
Am I still getting some race condition? Any suggestions here would be much appreciated!

The problem is likely to be in ECONNREFUSED 0.0.0.0:9324. Judging by the port number it is an attempt to reach the sqs service, but the IP-address is bad. It should connect to sqs:9324 or an IP-address of that container. 0.0.0.0 means 'any IP-address' and it is usually used to bind a port. Check your serverless configuration.
Also, you can easily check if you are in a 'race condition' or not. For that simply start your services one by one using several terminals:
docker-compose up database
docker-compose up sqs
docker-compose up sqs-create
docker-compose up serverless
If you can start services one by one then it is likely you are. In this case you can add restart: on-failure property to a service. This way if a container exits with a code other than 0 - docker restarts the container.

It turns out, my issue was actually in my serverless.yml configuration. Here, I had my serverless.yml with a custom configuration as follows:
custom:
serverless-offline-sqs:
autoCreate: true # create queue if not exists
apiVersion: '2012-11-05'
endpoint: http://0.0.0.0:9324
region: us-east-1
accessKeyId: root
secretAccessKey: root
skipCacheInvalidation: false
The correct endpoint was actually `http://sqs:9324'. Everything else was correct!

Related

LocalStack stuck in "Waiting for all LocalStack services to be ready" messages

I have tried to run Localstack as it described on its GitHub page and I've used a command 'pip install localstack' as well as command 'docker-compose up' with docker-compose file from documentation:
version: "3.8"
services:
localstack:
container_name: "${LOCALSTACK_DOCKER_NAME-localstack_main}"
image: localstack/localstack
network_mode: bridge
ports:
- "127.0.0.1:53:53"
- "127.0.0.1:53:53/udp"
- "127.0.0.1:443:443"
- "127.0.0.1:4566:4566"
- "127.0.0.1:4571:4571"
environment:
- SERVICES=${SERVICES- }
- DEBUG=${DEBUG- }
- DATA_DIR=${DATA_DIR- }
- LAMBDA_EXECUTOR=${LAMBDA_EXECUTOR- }
- LOCALSTACK_API_KEY=${LOCALSTACK_API_KEY- }
- KINESIS_ERROR_PROBABILITY=${KINESIS_ERROR_PROBABILITY- }
- DOCKER_HOST=unix:///var/run/docker.sock
- HOST_TMP_FOLDER="${TMPDIR:-/tmp}/localstack"
volumes:
- "${TMPDIR:-/tmp}/localstack:/tmp/localstack"
- "/var/run/docker.sock:/var/run/docker.sock"
But in both ways I get the same output:
localstack_main | 2021-09-21 15:32:26,633 CRIT Supervisor is running as root. Privileges were not dropped because no user is specified in the config file. If you intend to run as root, you can set user=root in the config file to avoid this message.
localstack_main | 2021-09-21 15:32:26,645 INFO supervisord started with pid 14
localstack_main | 2021-09-21 15:32:27,650 INFO spawned: 'dashboard' with pid 20
localstack_main | 2021-09-21 15:32:27,653 INFO spawned: 'infra' with pid 21
localstack_main | 2021-09-21 15:32:27,659 INFO success: dashboard entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
localstack_main | 2021-09-21 15:32:27,660 INFO exited: dashboard (exit status 0; expected)
localstack_main | (. .venv/bin/activate; exec bin/localstack start --host)
localstack_main | 2021-09-21 15:32:28,663 INFO success: infra entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
localstack_main | LocalStack version: 0.12.1
localstack_main | Starting local dev environment. CTRL-C to quit.
localstack_main | Waiting for all LocalStack services to be ready
localstack_main | Waiting for all LocalStack services to be ready
localstack_main | Waiting for all LocalStack services to be ready
localstack_main | Waiting for all LocalStack services to be ready
And then nothing appears except these recurring messages.
Does anybody know how to fix this problem?
This might not be the solution for everyone, but worth suggesting to try update your Docker version.
I had the same issue and for few days, and then I tried to update my docker version
I use Docker version 20.10.11 on apple silicon and can confirm it works fine. So far, after this update, I did not encounter any new issues with local-stack.
Also this Github issue suggests deleting your local-stack's volume before each run. It works, however this obviously can't be long term solution, but might be good mitigation when one is in need.
Update your docker-compose.yml as below and then run docker-compose up. It should work as expected.
version: "3.8"
services:
localstack:
container_name: "${LOCALSTACK_DOCKER_NAME-localstack}"
image: localstack/localstack
hostname: localstack
networks:
- test-net
ports:
- "4566:4566"
environment:
- SERVICES=s3,sqs,cloudformation,iam,cloudwatch
- DEBUG=1
- DATA_DIR=/tmp/localstack/data
- LAMBDA_EXECUTOR=docker-reuse
- LAMBDA_REMOTE_DOCKER=false
- LAMBDA_REMOVE_CONTAINERS=true
- DOCKER_HOST=unix:///var/run/docker.sock
- HOST_TMP_FOLDER=${TMPDIR}
volumes:
- "/var/run/docker.sock:/var/run/docker.sock"
networks:
test-net:
external: false
driver: bridge
name: test-net

Unable to forward/map port internaly in Docker-Compose

I am currently having an app with 3 different databases (it's for a test). I have the following docker image:
Dockerfile
FROM golang:1.15
WORKDIR /myapp
# Download wait for it tool.
ADD https://raw.githubusercontent.com/vishnubob/wait-for-it/master/wait-for-it.sh /wait-for-it
RUN chmod +x /wait-for-it
and the following docker-compose.yml
version: '3.7'
services:
app:
build:
context: .
dockerfile: Dockerfile.dev
volumes:
- .:/app
command: sh -c "/wait-for-it postgres:10001 -- /wait-for-it oracle:10000 -- /wait-for-it mongodb:10002"
depends_on:
- oracle
- mongodb
- postgres
ports:
- "8080:8080"
oracle:
image: chameleon82/oracle-xe-10g:latest
ports:
- "10000:8080"
expose:
- 10000
postgres:
image: postgres:9.6-alpine
ports:
- "10001:5432"
environment:
- POSTGRES_HOST_AUTH_METHOD=trust
- POSTGRES_DB=testdb
expose:
- 10001
mongodb:
image: mongo:latest
ports:
- "10002:27017"
expose:
- 10002
The thing is, as you saw, my app listens on 8080, but so Oracle does. I know I can change my app port, but still, I would like to switch Oracle to another port. I am trying to achieve it from port mapping, but I do feel that it only works for the host machine, not for a use from within the docker-compose, am I wrong?
Think of services within a Docker Compose network (i.e. app, oracle) as distinct hosts. Each is addressable by its service name, i.e. app should refer to the oracle service by this name (oracle).
The port mapping allows you to expose (and map) service ports within a Docker Compose network to (possibly different) host ports. This is commonly because, the host has a singular dimension of port spaces (0...65535) whereas each service within the Docker Compose network has a port space. 2 services (e.g. http1 and http2) may each use port e.g. 8080 but there's only one 8080 on the host and so, to expose each of these services on your host, one would have to yield; one could also be on the host's 8080 but the other would need to be elsewhere, perhaps 8081.
In your case, e.g. oracle runs on 8080 within the Docker Compose network and is exposed on the host's port 10000. As far as the app service is concerned, this service is available as oracle:8080 (8080 not 10000) within the Docker Compose network.
The expose syntax is purely documentary and has no functional effect.
Responding to comments
If I run your Compose script as-is, it does not work. This is expected because e.g. postgres is available on 5432 within the Compose network not on 10001
docker-compose logs app
Attaching to 63690852_app_1
app_1 | wait-for-it: waiting 15 seconds for postgres:10001
app_1 | wait-for-it: timeout occurred after waiting 15 seconds for postgres:10001
app_1 | wait-for-it: waiting 15 seconds for oracle:10000
app_1 | wait-for-it: timeout occurred after waiting 15 seconds for oracle:10000
app_1 | wait-for-it: waiting 15 seconds for mongodb:10002
app_1 | wait-for-it: timeout occurred after waiting 15 seconds for mongodb:10002
If I correct the ports:
command: sh -c "/wait-for-it postgres:5432 -- /wait-for-it oracle:8080 -- /wait-for-it mongodb:27017"
It works as expected:
docker-compose logs app
Attaching to 63690852_app_1
app_1 | wait-for-it: waiting 15 seconds for postgres:5432
app_1 | wait-for-it: postgres:5432 is available after 0 seconds
app_1 | wait-for-it: waiting 15 seconds for oracle:8080
app_1 | wait-for-it: oracle:8080 is available after 8 seconds
app_1 | wait-for-it: waiting 15 seconds for mongodb:27017
app_1 | wait-for-it: mongodb:27017 is available after 0 seconds

docker-compose problems mounting the teamspeak data directory as a volume

I'm trying to start a teamspeak container and mount the sqlite files to the host. I use a fresh installed docker engine and docker-compose. I haven't done the post installation setup to run docker as non-root user (docs). That's why I think I have problems when I mount the TS data folder /opt/ts3server/sql/ (docs) to my host system. The ./teamspeak/ folder owns root but I gave it also r-w-x for everyone.
docker-compose.yaml:
version: '3'
services:
teamspeak:
user: root
image: teamspeak
restart: always
ports:
- 9987:9987/udp
- 10011:10011
- 30033:30033
volumes:
- ./teamspeak/:/opt/ts3server/sql/
environment:
TS3SERVER_LICENSE: accept
error logs from teamspeak:
teamspeak_1 | 2019-10-25 20:18:33.827157|INFO |ServerLibPriv | |TeamSpeak 3 Server 3.9.1 (2019-07-02 13:17:23)
teamspeak_1 | 2019-10-25 20:18:33.827272|INFO |ServerLibPriv | |SystemInformation: Linux 4.19.0-6-amd64 #1 SMP Debian 4.19.67-2+deb10u1 (2019-09-20) x86_64 Binary: 64bit
teamspeak_1 | 2019-10-25 20:18:33.827300|INFO |ServerLibPriv | |Using hardware aes
teamspeak_1 | 2019-10-25 20:18:33.827484|INFO |DatabaseQuery | |dbPlugin name: SQLite3 plugin, Version 3, (c)TeamSpeak Systems GmbH
teamspeak_1 | 2019-10-25 20:18:33.827513|INFO |DatabaseQuery | |dbPlugin version: 3.11.1
teamspeak_1 | 2019-10-25 20:18:33.827614|INFO |DatabaseQuery | |checking database integrity (may take a while)
teamspeak_1 | 2019-10-25 20:18:33.844497|CRITICAL|DatabaseQuery | |setSQLfromFile( file:properties_list_by_string_id.sql) failed
When I set anything else than /opt/ts3server/sql/ the teamspeak server starts.
How can I make the mounted volume read and writable for teamspeak?
I assume you want to mount the data directory of the TS3 server. The volume you mounted (/opt/ts3server/sql/) is used to store the sql scripts to create the database.
This variable controls where the TeamSpeak server looks for sql files. Defaults to /opt/ts3server/sql/.
- teamspeak docker docu
you instead want to mount the data directory (/var/ts3server/) to the host sytsem:
version: '3'
services:
teamspeak:
user: root
image: teamspeak
restart: always
ports:
- 9987:9987/udp
- 10011:10011
- 30033:30033
volumes:
- ./teamspeak/:/var/ts3server/
environment:
TS3SERVER_LICENSE: accept

docker-compose UnknownHostException : but docker run works

I have a docker image (lfs-service:latest) that I'm trying to run as part of a suite of micro services.
RHELS 7.5
Docker version: 1.13.1
docker-compose version 1.23.2
Postgres 11 (installed on RedHat host machine)
The following command works exactly as I would like:
docker run -d \
-p 9000:9000 \
-v "$PWD/lfs-uploads:/lfs-uploads" \
-e "SPRING_PROFILES_ACTIVE=dev" \
-e dbhost=$HOSTNAME \
--name lfs-service \
[corp registry]/lfs-service:latest
This successfully:
creates/starts a container with my Spring Boot Docker image on port
9000
writes the uploads to disk into the lfs-uploads directory
and connects to a local Postgres DB that's running on the host
machine (not in a Docker container).
My service works as expected. Great!
Now, my problem:
I'm tring to run/manage my services using Docker Compose with the following content (I have removed all other services and my api gateway from docker-compose.yaml to simplify the scenario):
version: '3'
services:
lfs-service:
image: [corp registry]/lfs-service:latest
container_name: lfs-service
stop_signal: SIGINT
ports:
- 9000:9000
expose:
- 9000
volumes:
- "./lfs-uploads:/lfs-uploads"
environment:
- SPRING_PROFILES_ACTIVE=dev
- dbhost=$HOSTNAME
Relevant entries in application.yaml:
spring:
profiles: dev
datasource:
url: jdbc:postgresql://${dbhost}:5432/lfsdb
username: [dbusername]
password: [dbpassword]
jpa:
properties:
hibernate:
dialect: org.hibernate.dialect.PostgreSQLDialect
hibernate:
ddl-auto: update
Execution:
docker-compose up
...
The following profiles are active: dev
...
Tomcat initialized with port(s): 9000 (http)
...
lfs-service | Caused by: java.net.UnknownHostException: [host machine hostname]
lfs-service | at
java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) ~[na:1.8.0_181]
lfs-service | at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_181]
lfs-service | at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_181]
lfs-service | at org.postgresql.core.PGStream.<init>(PGStream.java:70) ~[postgresql-42.2.5.jar!/:42.2.5]
lfs-service | at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91) ~[postgresql-42.2.5.jar!/:42.2.5]
lfs-service | at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ~[postgresql-42.2.5.jar!/:42.2.5]
...
lfs-service | 2019-01-11 18:46:54.495 WARN [lfs-service,,,] 1 --- [ main] o.s.b.a.orm.jpa.DatabaseLookup : Unable to determine jdbc url from datasource
lfs-service |
lfs-service | org.springframework.jdbc.support.MetaDataAccessException: Could not get Connection for extracting meta-data; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is org.postgresql.util.PSQLException: The connection attempt failed.
lfs-service | at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:328) ~[spring-jdbc-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
lfs-service | at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:356) ~[spring-jdbc-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
...
Both methods of starting should be equivalent but obviously there's a functional difference... Any ideas on how to resolve this issue / write a comperable docker-compose file which is functionally identical to the "docker run" command at the top?
NOTE: I've also tried the following values for dbhost: localhost, 127.0.0.1 - this won't work as it attempts to find the DB in the container, and not on the host machine.
CORRECTION:
Unfortunately, while this solution works in the simplest use case - it will break Eureka & API Gateways from functioning, as the container will be running on a separate network. I'm still looking for working solution.
To anyone looking for a solution to this question, this worked for me:
docker-compose.yaml:
lfs-service:
image: [corp repo]/lfs-service:latest
container_name: lfs-service
stop_signal: SIGINT
ports:
- 9000:9000
expose:
- 9000
volumes:
- "./lfs-uploads:/lfs-uploads"
environment:
- SPRING_PROFILES_ACTIVE=dev
- dbhost=localhost
network_mode: host
Summary of changes made to docker-compose.yaml:
change $HOSTNAME to "localhost"
Add "network_mode: host"
I have no idea if this is the "correct" way to resolve this, but since it's only for our remote development server the solution is working for me. I'm open to suggestions if you have a better solution.
Working solution
The simple solution is to just provide the host machine IP address (vs hostname).
environment:
- SPRING_PROFILES_ACTIVE=dev
- dbhost=172.18.0.1
Setting this via an environment variable would probably be more portable:
export DB_HOST_IP=172.18.0.1
docker-compose.yaml
environment:
- SPRING_PROFILES_ACTIVE=dev
- dbhost=${DB_HOST_IP}

How to deploy Kong to docker swarm?

Followed official guide to write a stack deploy file:
stack.yml
version: "3"
services:
kong-database:
image: cassandra:3
ports:
- "9042:9042"
networks:
- kong-net
kong-migration:
image: kong:latest
depends_on:
- kong-database
environment:
- KONG_DATABASE=cassandra
- KONG_CASSANDRA_CONTACT_POINTS=kong-database
command: kong migrations up
networks:
- kong-net
kong:
image: kong:latest
depends_on:
- kong-database
- kong-migration
deploy:
replicas: 3
environment:
- KONG_DATABASE=cassandra
- KONG_CASSANDRA_CONTACT_POINTS=kong-database
- KONG_PROXY_ACCESS_LOG=/dev/stdout
- KONG_ADMIN_ACCESS_LOG=/dev/stdout
- KONG_PROXY_ERROR_LOG=/dev/stderr
- KONG_ADMIN_ERROR_LOG=/dev/stderr
- KONG_ADMIN_LISTEN=0.0.0.0:8001, 0.0.0.0:8444 ssl
ports:
- "8000:8000"
- "8443:8443"
- "8001:8001"
- "8444:8444"
networks:
- kong-net
networks:
kong-net:
Deploy:
$ docker stack deploy -c stack.yml gateway
Check services:
$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
xg3qld08ziio gateway_kong replicated 1/3 kong:latest *:8000-8001->8000-8001/tcp, *:8443-8444->8443-8444/tcp
kam7fw265ons gateway_kong-database replicated 1/1 cassandra:3 *:9042->9042/tcp
kr0vqoc66izn gateway_kong-migration replicated 0/1 kong:latest
Check gateway_kong log:
gateway_kong.2.zn0tfalwxylx#ip-1-2-3-4 | [C]: in function 'error'
gateway_kong.2.zxuwxm5xbroe#ip-1-2-3-4 | init_by_lua:3: in main chunk
gateway_kong.2.zxuwxm5xbroe#ip-1-2-3-4 | nginx: [error] init_by_lua error: /usr/local/share/lua/5.1/kong/init.lua:172: [cassandra error] the current database schema does not match this version of Kong. Please run `kong migrations up` to update/initialize the database schema. Be aware that Kong migrations should only run from a single node, and that nodes running migrations concurrently will conflict with each other and might corrupt your database schema!
gateway_kong.1.zr8biqoaccfz#ip-1-2-3-4 | init_by_lua:3: in main chunk
gateway_kong.1.zy0u3ul9gp0l#ip-1-2-3-4 | init_by_lua:3: in main chunk
gateway_kong.2.zn0tfalwxylx#ip-1-2-3-4 | /usr/local/share/lua/5.1/kong/init.lua:169: in function 'init'
gateway_kong.1.zy0u3ul9gp0l#ip-1-2-3-4 | nginx: [error] init_by_lua error: /usr/local/share/lua/5.1/kong/init.lua:172: [cassandra error] the current database schema does not match this version of Kong. Please run `kong migrations up` to update/initialize the database schema. Be aware that Kong migrations should only run from a single node, and that nodes running migrations concurrently will conflict with each other and might corrupt your database schema!
gateway_kong.2.zxuwxm5xbroe#ip-1-2-3-4 | stack traceback:
gateway_kong.2.zxuwxm5xbroe#ip-1-2-3-4 | [C]: in function 'assert'
gateway_kong.2.zn0tfalwxylx#ip-1-2-3-4 | init_by_lua:3: in main chunk
gateway_kong.1.zy0u3ul9gp0l#ip-1-2-3-4 | stack traceback:
gateway_kong.1.zy0u3ul9gp0l#ip-1-2-3-4 | [C]: in function 'assert'
gateway_kong.2.zxuwxm5xbroe#ip-1-2-3-4 | /usr/local/share/lua/5.1/kong/init.lua:172: in function 'init'
gateway_kong.2.zxuwxm5xbroe#ip-1-2-3-4 | init_by_lua:3: in main chunk
gateway_kong.1.zy0u3ul9gp0l#ip-1-2-3-4 | /usr/local/share/lua/5.1/kong/init.lua:172: in function 'init'
gateway_kong.1.zy0u3ul9gp0l#ip-1-2-3-4 | init_by_lua:3: in main chunk
gateway_kong.3.zq9rrsn2pd2r#ip-1-2-3-5 | /usr/local/share/lua/5.1/kong/init.lua:172: in function 'init'
gateway_kong.3.zq9rrsn2pd2r#ip-1-2-3-5 | init_by_lua:3: in main chunk
Have defined kong-migration and set command kong migrations up. Even set depends depends_on, why can't do migration?
As there is no answer here I will leave some things that I learned recently even if it's not related to Kong. This question seems more related to container startup order than to Kong itself.
The depends_on option is ignored when deploying a stack in swarm mode with a version 3 Compose file.
I tried to deploy Traefik with configuration stored in Consul to Swarm.
The scenario was:
I had to deploy first my storage backend: consul
Then deploy an instance of traefik which would upload config to consul: traefik_init
And finally I could deploy all traefik instances with consul backend: traefik
I was not able to deploy consul, traefik_init and traefik in the same stack.
Since I was alreay using Ansible I created a playbook doing the following
deploy consul stack
wait for all consul nodes to be synced
start traefik_init as a service with only 1 replica
wait for the configuration to be stored in consul
deploy traefik stack.
I could have deployed all services in same stack if I chose to override both ENTRYPOINT and CMD of containers to use a script that wait for needed services to be up and then execute command at startup.
If I were not using Ansible already I would definitely have gone that way.
You can take a look at wait-for-it (pure bash script to test and wait on the availability of a TCP host and port) or wait-for(script to wait for another service to become available) for examples.
You can also find an example at https://docs.docker.com/compose/startup-order/

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