add initial docker-compose.yaml

.env.example

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+# Docker
+VOLUME_PATH=/data/zabbix
+
+# PostgreSQL
+POSTGRES_TAG=13
+
+# Zabbix
+ZABBIX_TAG=5.4-alpine-latest
+ZABBIX_TZ="Europe/London"

.gitignore

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+.env
+
+secrets/postgres_password.txt

docker-compose.yaml

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+secrets:
+  postgres_db:
+    file: ./secrets/postgres_db.txt
+  postgres_user:
+    file: ./secrets/postgres_user.txt
+  postgres_password:
+    file: ./secrets/postgres_password.txt
+
+networks:
+  database:
+  web:
+  agent:
+
+services:
+  postgres-server:
+    image: postgres:${POSTGRES_TAG}
+    restart: unless-stopped
+    volumes:
+      - ${VOLUME_PATH}/var/lib/postgresql/data:/var/lib/postgresql/data:rw
+    networks:
+      - database
+    secrets:
+      - postgres_db
+      - postgres_user
+      - postgres_password
+    environment:
+      POSTGRES_DB_FILE: /run/secrets/postgres_db
+      POSTGRES_USER_FILE: /run/secrets/postgres_user
+      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
+
+  zabbix-server:
+    image: zabbix/zabbix-server-pgsql:${ZABBIX_TAG}
+    restart: unless-stopped
+    networks:
+      - database
+      - web
+      - agent
+    secrets:
+      - postgres_db
+      - postgres_user
+      - postgres_password
+    environment:
+      POSTGRES_DB_FILE: /run/secrets/postgres_db
+      POSTGRES_USER_FILE: /run/secrets/postgres_user
+      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
+      ZBX_HISTORYSTORAGETYPES: log,text # Zabbix configuration variables
+      ZBX_DEBUGLEVEL: 1
+      ZBX_HOUSEKEEPINGFREQUENCY: 1
+      ZBX_MAXHOUSEKEEPERDELETE: 5000
+    ports:
+      - 10051:10051
+    depends_on:
+      - postgres-server
+    volumes:
+      - ${VOLUME_PATH}/usr/lib/zabbix/alertscripts:/usr/lib/zabbix/alertscripts:rw
+
+  zabbix-web:    # The main Zabbix web UI or interface 
+    image: zabbix/zabbix-web-nginx-pgsql:${ZABBIX_TAG}
+    restart: unless-stopped
+    networks:
+      - database
+      - web
+    secrets:
+      - postgres_db
+      - postgres_user
+      - postgres_password
+    environment:  # Postgres database variables
+      POSTGRES_DB_FILE: /run/secrets/postgres_db
+      POSTGRES_USER_FILE: /run/secrets/postgres_user
+      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
+      ZBX_SERVER_HOST: zabbix-server  # Zabbix related and PHP variables
+      ZBX_POSTMAXSIZE: 64M
+      PHP_TZ: ${ZABBIX_TZ}
+      ZBX_MAXEXECUTIONTIME: 500
+    depends_on:
+      - postgres-server
+      - zabbix-server
+    ports: # Port where Zabbix UI is available
+      - 80:8080
+
+  zabbix-agent:   # Zabbix agent service that tracks usage and send to zabbix server
+    image: zabbix/zabbix-agent:${ZABBIX_TAG}
+    restart: unless-stopped
+    networks:
+      - agent
+    # network_mode: "host"
+    privileged: true
+    depends_on:
+      - zabbix-server

secrets/postgres_db.txt

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+zabbix

secrets/postgres_user.txt

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+zabbix