Question 98656 in Nginx Question posted in
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Zabbix server docker does not connect to zabbix agent and vice versa – Nginx

This is my docker-compose file:

version: "3.7"

services:
  zookeeper:
    image: 'confluentinc/cp-zookeeper:latest'
    container_name: pooyesh-zookeeper
    ports: 
      - 2181:2181
    env_file: 
      - zookeeper.env  
  kafka:
    image: 'confluentinc/cp-kafka:latest'
    container_name: pooyesh-kafka
    env_file:
      - kafka.env
    ports: 
      - 9093:9093
    depends_on:
      - zookeeper

  postgres:
    image: 'postgres:latest'
    container_name: pooyesh-postgres
    env_file: 
      - postgres.env
    ports:
      - 5342:5432
    volumes: 
      - pooyesh-postgres:/var/lib/postgresql/data/
    
  zabbix-server:
    image: 'zabbix/zabbix-server-pgsql:latest'
    container_name: pooyesh-zabbix-server
    env_file: 
      - zabbix-server.env
    ports: 
      - 10051:10051
    depends_on: 
      - postgres
  zabbix-frontend:
    image: 'zabbix/zabbix-web-nginx-pgsql:latest'
    container_name: pooyesh-zabbix-frontend
    env_file: 
      - zabbix-frontend.env
    ports:
      - 8090:8080
    depends_on:
      - zabbix-server
      - postgres
  zabbix-agent:   # Zabbix agent service that tracks usage and send to zabbix server
    image: zabbix/zabbix-agent:latest
    container_name: pooyesh-zabbix-agent
    privileged: true   #access mode for allowing resource access
    environment:
      - ZBX_SERVER_HOST=zabbix-server #the IP/Dns of Zabbix server
    volumes:
      - pooyesh-zabbix-agent:/etc/zabbix/

volumes: 
  pooyesh-postgres:
  pooyesh-zabbix-agent:
  pooyesy-zabbix-server:

And also these are their related env files:

postgres.env

POSTGRES_USER=pooyesh
POSTGRES_PASSWORD=2110320982
POSTGRES_DB=pooyesh

zabbix-server.env

DB_SERVER_HOST=postgres
DB_SERVER_PORT=5432
POSTGRES_USER=pooyesh
POSTGRES_PASSWORD=2110320982
POSTGRES_DB=pooyesh
ZBX_TIMEOUT=10

zabbix-frontend.env

DB_SERVER_HOST=postgres
DB_SERVER_PORT=5432
POSTGRES_USER=pooyesh
POSTGRES_PASSWORD=2110320982
POSTGRES_DB=pooyesh
ZBX_SERVER_HOST=zabbix-server
ZBX_SERVER_PORT=10051

When I run the docker-compose file, this is the log which I get from the pooyesh-zabbix-server container:

213:20210929:180535.655 cannot send list of active checks to "172.18.0.3": host [9de9d2980576] not found
198:20210929:182416.233 item "Zabbix server:vfs.fs.size[/,pused]" became not supported: Value of type "string" is not suitable for value type "Numeric (unsigned)". Value "92.887666"

And also this is the log which I get from the pooyesh-zabbix-agent container:

76:20210929:194155.572 active check configuration update from [zabbix-server:10051] started to fail (cannot resolve [zabbix-server])
    76:20210929:194255.588 active check configuration update from [zabbix-server:10051] is working again
    76:20210929:194255.588 no active checks on server [zabbix-server:10051]: host [23d448ba463e] not found

Maybe it is useful to say that I have telnet from each of these two containers to the other one. for example on the pooyesh-zabbix-server I have telnet telnet zabbix-agent 10050

All of these containers are in the same docker-compose network and I don’t know what is wrong.
I also put zabbix-server config file here and zabbix-agent config file here

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    I finally can resolve my problem. zabbix-agent has an environment variable named ZBX_HOSTNAME which should be the name of the hostname in the zabbix web hosts tab. in my case it was Zabbix server. So when I add ZBX_HOSTNAME=Zabbix server to environment variables of my zabbix-agent and depends on it to the zabbix-server everything is good.


  2. 0

    In my case, I needed to update in Zabbix the host IP with the one of it’s Docker container.

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