diff --git a/monitoring/README.md b/monitoring/README.md
index 3073846..b7bcb40 100644
--- a/monitoring/README.md
+++ b/monitoring/README.md
@@ -1,6 +1,7 @@
-# Installing the Zabbix server 
+# Installing the Zabbix server
 
 Change default passwords, ports and set listen IP (ports `8080/tcp` and `10051/tcp` will be open on all interfaces, use a firewall or specify the address of the required interface), then run:
+
 ```bash
 wget https://github.com/tornadocash/tornado-relayer/raw/master/monitoring/zabbix.tar.gz
 mkdir $HOME/monitoring/
@@ -12,18 +13,21 @@ docker-compose up -d
 # Installing the Zabbix agent
 
 Download package from repository [https://repo.zabbix.com/zabbix/5.2/ubuntu/pool/main/z/zabbix/](https://repo.zabbix.com/zabbix/5.2/ubuntu/pool/main/z/zabbix/) and run:
+
 ```bash
 sudo dpkg -i zabbix-agent_5.2.*.deb
 sudo usermod -aG docker zabbix
 ```
+
 Change default values in `/etc/zabbix/zabbix_agent2.conf`:
 
-* `Hostname` the same as in the zabbix-server web interface;
-* `Server` and `ServerActive` set zabbix server IP or DNS name;
-* `ListenIP` to local network IP available from zabbix server or set firewall rules to restrict access to port `10050`;
-* uncomment `Plugins.Docker.Endpoint=unix:///var/run/docker.sock`.
+- `Hostname` the same as in the zabbix-server web interface;
+- `Server` and `ServerActive` set zabbix server IP or DNS name;
+- `ListenIP` to local network IP available from zabbix server or set firewall rules to restrict access to port `10050`;
+- uncomment `Plugins.Docker.Endpoint=unix:///var/run/docker.sock`.
 
 Then run:
+
 ```bash
 sudo systemctl enable zabbix-agent2.service
 sudo systemctl restart zabbix-agent2.service
@@ -35,15 +39,17 @@ Log into your Zabbix server (defaul login and passord: `Admin` - `zabbix`) and c
 
 # Import templates
 
-Import templates using the WebUI: 
-* [Docker-template.yaml](/monitoring/templates/Docker-template.yaml);
-* [Tornado-relayer-template.yaml](/monitoring/templates/Tornado-relayer-template.yaml).
+Import templates using the WebUI:
 
-Link templates with added host. It is also recommended to link `Linux CPU by Zabbix agent`, `Linux filesystems by Zabbix agent` and `Linux memory by Zabbix agent` templates to the host. 
+- [Docker-template.yaml](/monitoring/templates/Docker-template.yaml);
+- [Tornado-relayer-template.yaml](/monitoring/templates/Tornado-relayer-template.yaml).
+
+Link templates with added host. It is also recommended to link `Linux CPU by Zabbix agent`, `Linux filesystems by Zabbix agent` and `Linux memory by Zabbix agent` templates to the host.
 
 # Alerts
 
 In WebUI - Administration -> Media types -> Telegram:
+
 ```
 https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/media/telegram
 
@@ -58,4 +64,4 @@ https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/media/telegram
     4.2. Send "/getgroupid@myidbot" in your group
     4.3. Copy returned group id save it in the "Telegram Webhook" media for the user you created for  group notifications
     4.4. Send "/start@your_bot_name_here" in your group (Telegram bot won't send anything to the group without it)
-```
\ No newline at end of file
+```
diff --git a/monitoring/docker-compose.yml b/monitoring/docker-compose.yml
index 5bbd46e..c722fca 100644
--- a/monitoring/docker-compose.yml
+++ b/monitoring/docker-compose.yml
@@ -2,179 +2,179 @@
 
 version: '3.5'
 services:
- zabbix-server:
-  image: zabbix/zabbix-server-pgsql:alpine-5.2-latest
-  restart: always
-  ports:
-   - "10051:10051"
-  volumes:
-   - /etc/localtime:/etc/localtime:ro
-   - /etc/timezone:/etc/timezone:ro 
-   - ./zbx_env/usr/lib/zabbix/alertscripts:/usr/lib/zabbix/alertscripts:ro
-   - ./zbx_env/usr/lib/zabbix/externalscripts:/usr/lib/zabbix/externalscripts:ro
-   - ./zbx_env/var/lib/zabbix/export:/var/lib/zabbix/export:rw
-   - ./zbx_env/var/lib/zabbix/modules:/var/lib/zabbix/modules:ro
-   - ./zbx_env/var/lib/zabbix/enc:/var/lib/zabbix/enc:ro
-   - ./zbx_env/var/lib/zabbix/ssh_keys:/var/lib/zabbix/ssh_keys:ro
-   - ./zbx_env/var/lib/zabbix/mibs:/var/lib/zabbix/mibs:ro
-   - ./zbx_env/var/lib/zabbix/snmptraps:/var/lib/zabbix/snmptraps:ro
-  ulimits:
-   nproc: 65535
-   nofile:
-    soft: 20000
-    hard: 40000
-  deploy:
-   resources:
-    limits:
-      cpus: '0.70'
-      memory: 1G
-    reservations:
-      cpus: '0.5'
-      memory: 512M
-  env_file:
-   - .env_db_pgsql
-   - .env_srv
-  secrets:
-   - POSTGRES_USER
-   - POSTGRES_PASSWORD
-  depends_on:
-   - postgres-server
-  networks:
-   zbx_net_backend:
-     aliases:
+  zabbix-server:
+    image: zabbix/zabbix-server-pgsql:alpine-5.2-latest
+    restart: always
+    ports:
+      - '10051:10051'
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      - /etc/timezone:/etc/timezone:ro
+      - ./zbx_env/usr/lib/zabbix/alertscripts:/usr/lib/zabbix/alertscripts:ro
+      - ./zbx_env/usr/lib/zabbix/externalscripts:/usr/lib/zabbix/externalscripts:ro
+      - ./zbx_env/var/lib/zabbix/export:/var/lib/zabbix/export:rw
+      - ./zbx_env/var/lib/zabbix/modules:/var/lib/zabbix/modules:ro
+      - ./zbx_env/var/lib/zabbix/enc:/var/lib/zabbix/enc:ro
+      - ./zbx_env/var/lib/zabbix/ssh_keys:/var/lib/zabbix/ssh_keys:ro
+      - ./zbx_env/var/lib/zabbix/mibs:/var/lib/zabbix/mibs:ro
+      - ./zbx_env/var/lib/zabbix/snmptraps:/var/lib/zabbix/snmptraps:ro
+    ulimits:
+      nproc: 65535
+      nofile:
+        soft: 20000
+        hard: 40000
+    deploy:
+      resources:
+        limits:
+          cpus: '0.70'
+          memory: 1G
+        reservations:
+          cpus: '0.5'
+          memory: 512M
+    env_file:
+      - .env_db_pgsql
+      - .env_srv
+    secrets:
+      - POSTGRES_USER
+      - POSTGRES_PASSWORD
+    depends_on:
+      - postgres-server
+    networks:
+      zbx_net_backend:
+        aliases:
+          - zabbix-server
+          - zabbix-server-pgsql
+          - zabbix-server-alpine-pgsql
+          - zabbix-server-pgsql-alpine
+      zbx_net_frontend:
+    stop_grace_period: 30s
+    sysctls:
+      - net.ipv4.ip_local_port_range=1024 65000
+      - net.ipv4.conf.all.accept_redirects=0
+      - net.ipv4.conf.all.secure_redirects=0
+      - net.ipv4.conf.all.send_redirects=0
+    labels:
+      com.zabbix.description: 'Zabbix server with PostgreSQL database support'
+      com.zabbix.company: 'Zabbix LLC'
+      com.zabbix.component: 'zabbix-server'
+      com.zabbix.dbtype: 'pgsql'
+      com.zabbix.os: 'alpine'
+
+  zabbix-web:
+    image: zabbix/zabbix-web-nginx-pgsql:alpine-5.2-latest
+    restart: always
+    ports:
+      - '8080:8080'
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      - /etc/timezone:/etc/timezone:ro
+      - ./zbx_env/etc/ssl/nginx:/etc/ssl/nginx:ro
+      - ./zbx_env/usr/share/zabbix/modules/:/usr/share/zabbix/modules/:ro
+    deploy:
+      resources:
+        limits:
+          cpus: '0.70'
+          memory: 512M
+        reservations:
+          cpus: '0.5'
+          memory: 256M
+    env_file:
+      - .env_db_pgsql
+      - .env_web
+    secrets:
+      - POSTGRES_USER
+      - POSTGRES_PASSWORD
+    depends_on:
+      - postgres-server
       - zabbix-server
-      - zabbix-server-pgsql
-      - zabbix-server-alpine-pgsql
-      - zabbix-server-pgsql-alpine
-   zbx_net_frontend:
-  stop_grace_period: 30s
-  sysctls:
-   - net.ipv4.ip_local_port_range=1024 65000
-   - net.ipv4.conf.all.accept_redirects=0
-   - net.ipv4.conf.all.secure_redirects=0
-   - net.ipv4.conf.all.send_redirects=0
-  labels:
-   com.zabbix.description: "Zabbix server with PostgreSQL database support"
-   com.zabbix.company: "Zabbix LLC"
-   com.zabbix.component: "zabbix-server"
-   com.zabbix.dbtype: "pgsql"
-   com.zabbix.os: "alpine"
+    healthcheck:
+      test: ['CMD', 'curl', '-f', 'http://localhost:8080/']
+      interval: 10s
+      timeout: 5s
+      retries: 3
+    networks:
+      zbx_net_backend:
+        aliases:
+          - zabbix-web-nginx-pgsql
+          - zabbix-web-nginx-alpine-pgsql
+          - zabbix-web-nginx-pgsql-alpine
+      zbx_net_frontend:
+    stop_grace_period: 10s
+    sysctls:
+      - net.core.somaxconn=65535
+    labels:
+      com.zabbix.description: 'Zabbix frontend on Nginx web-server with PostgreSQL database support'
+      com.zabbix.company: 'Zabbix LLC'
+      com.zabbix.component: 'zabbix-frontend'
+      com.zabbix.webserver: 'nginx'
+      com.zabbix.dbtype: 'pgsql'
+      com.zabbix.os: 'alpine'
 
- zabbix-web:
-  image: zabbix/zabbix-web-nginx-pgsql:alpine-5.2-latest
-  restart: always
-  ports:
-   - "8080:8080"
-  volumes:
-   - /etc/localtime:/etc/localtime:ro
-   - /etc/timezone:/etc/timezone:ro
-   - ./zbx_env/etc/ssl/nginx:/etc/ssl/nginx:ro
-   - ./zbx_env/usr/share/zabbix/modules/:/usr/share/zabbix/modules/:ro
-  deploy:
-   resources:
-    limits:
-      cpus: '0.70'
-      memory: 512M
-    reservations:
-      cpus: '0.5'
-      memory: 256M
-  env_file:
-   - .env_db_pgsql
-   - .env_web
-  secrets:
-   - POSTGRES_USER
-   - POSTGRES_PASSWORD
-  depends_on:
-   - postgres-server
-   - zabbix-server
-  healthcheck:
-   test: ["CMD", "curl", "-f", "http://localhost:8080/"]
-   interval: 10s
-   timeout: 5s
-   retries: 3
-  networks:
-   zbx_net_backend:
-    aliases:
-     - zabbix-web-nginx-pgsql
-     - zabbix-web-nginx-alpine-pgsql
-     - zabbix-web-nginx-pgsql-alpine
-   zbx_net_frontend:
-  stop_grace_period: 10s
-  sysctls:
-   - net.core.somaxconn=65535
-  labels:
-   com.zabbix.description: "Zabbix frontend on Nginx web-server with PostgreSQL database support"
-   com.zabbix.company: "Zabbix LLC"
-   com.zabbix.component: "zabbix-frontend"
-   com.zabbix.webserver: "nginx"
-   com.zabbix.dbtype: "pgsql"
-   com.zabbix.os: "alpine"
+  zabbix-agent:
+    image: zabbix/zabbix-agent2:alpine-5.2-latest
+    restart: always
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      - /etc/timezone:/etc/timezone:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+    env_file:
+      - .env_agent
+    privileged: true
+    user: root
+    pid: 'host'
+    networks:
+      zbx_net_backend:
+        aliases:
+          - zabbix-agent
+          - zabbix-agent-passive
+          - zabbix-agent-alpine
+    stop_grace_period: 5s
 
- zabbix-agent:
-  image: zabbix/zabbix-agent2:alpine-5.2-latest
-  restart: always
-  volumes:
-   - /etc/localtime:/etc/localtime:ro
-   - /etc/timezone:/etc/timezone:ro
-   - /var/run/docker.sock:/var/run/docker.sock
-  env_file:
-   - .env_agent
-  privileged: true
-  user: root
-  pid: "host"
-  networks:
-   zbx_net_backend:
-    aliases:
-     - zabbix-agent
-     - zabbix-agent-passive
-     - zabbix-agent-alpine
-  stop_grace_period: 5s
+  postgres-server:
+    image: postgres:alpine
+    restart: always
+    volumes:
+      - ./zbx_env/var/lib/postgresql/data:/var/lib/postgresql/data:rw
+    env_file:
+      - .env_db_pgsql
+    secrets:
+      - POSTGRES_USER
+      - POSTGRES_PASSWORD
+    stop_grace_period: 1m
+    networks:
+      zbx_net_backend:
+        aliases:
+          - postgres-server
+          - pgsql-server
+          - pgsql-database
 
- postgres-server:
-  image: postgres:alpine
-  restart: always
-  volumes:
-   - ./zbx_env/var/lib/postgresql/data:/var/lib/postgresql/data:rw
-  env_file:
-   - .env_db_pgsql
-  secrets:
-   - POSTGRES_USER
-   - POSTGRES_PASSWORD
-  stop_grace_period: 1m
-  networks:
-   zbx_net_backend:
-    aliases:
-     - postgres-server
-     - pgsql-server
-     - pgsql-database
-
- portainer:
-  image: portainer/portainer:latest
-  restart: always
-  ports:
-   - "9000:9000"
-  volumes:
-   - /var/run/docker.sock:/var/run/docker.sock
-   - portainer-data:/data
+  portainer:
+    image: portainer/portainer:latest
+    restart: always
+    ports:
+      - '9000:9000'
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - portainer-data:/data
 
 networks:
   zbx_net_frontend:
     driver: bridge
     driver_opts:
-      com.docker.network.enable_ipv6: "false"
+      com.docker.network.enable_ipv6: 'false'
     ipam:
       driver: default
       config:
-      - subnet: 172.16.238.0/24
+        - subnet: 172.16.238.0/24
   zbx_net_backend:
     driver: bridge
     driver_opts:
-      com.docker.network.enable_ipv6: "false"
+      com.docker.network.enable_ipv6: 'false'
     internal: true
     ipam:
       driver: default
       config:
-      - subnet: 172.16.239.0/24
+        - subnet: 172.16.239.0/24
 
 secrets:
   POSTGRES_USER:
diff --git a/monitoring/templates/Docker-template.yaml b/monitoring/templates/Docker-template.yaml
index eca4ffe..39172e8 100644
--- a/monitoring/templates/Docker-template.yaml
+++ b/monitoring/templates/Docker-template.yaml
@@ -2,130 +2,105 @@ zabbix_export:
   version: '5.2'
   date: '2021-11-29T12:29:17Z'
   groups:
-    -
-      name: Docker
+    - name: Docker
   templates:
-    -
-      template: Docker
+    - template: Docker
       name: Docker
       description: |
         Get Docker engine metrics from plugin for the New Zabbix Agent (zabbix-agent2).
-        
+
         You can discuss this template or leave feedback on our forum 
-        
+
         Template tooling version used: 0.38
       groups:
-        -
-          name: Docker
+        - name: Docker
       applications:
-        -
-          name: Docker
-        -
-          name: 'Zabbix raw items'
+        - name: Docker
+        - name: 'Zabbix raw items'
       items:
-        -
-          name: 'Docker: Get containers'
+        - name: 'Docker: Get containers'
           key: docker.containers
           history: '0'
           trends: '0'
           value_type: TEXT
           applications:
-            -
-              name: 'Zabbix raw items'
-        -
-          name: 'Docker: Containers paused'
+            - name: 'Zabbix raw items'
+        - name: 'Docker: Containers paused'
           type: DEPENDENT
           key: docker.containers.paused
           delay: '0'
           history: 7d
           description: 'Total number of containers paused on this host'
           applications:
-            -
-              name: Docker
+            - name: Docker
           preprocessing:
-            -
-              type: JSONPATH
+            - type: JSONPATH
               parameters:
                 - $.ContainersPaused
           master_item:
             key: docker.info
-        -
-          name: 'Docker: Containers running'
+        - name: 'Docker: Containers running'
           type: DEPENDENT
           key: docker.containers.running
           delay: '0'
           history: 7d
           description: 'Total number of containers running on this host'
           applications:
-            -
-              name: Docker
+            - name: Docker
           preprocessing:
-            -
-              type: JSONPATH
+            - type: JSONPATH
               parameters:
                 - $.ContainersRunning
           master_item:
             key: docker.info
-        -
-          name: 'Docker: Containers stopped'
+        - name: 'Docker: Containers stopped'
           type: DEPENDENT
           key: docker.containers.stopped
           delay: '0'
           history: 7d
           description: 'Total number of containers stopped on this host'
           applications:
-            -
-              name: Docker
+            - name: Docker
           preprocessing:
-            -
-              type: JSONPATH
+            - type: JSONPATH
               parameters:
                 - $.ContainersStopped
           master_item:
             key: docker.info
           triggers:
-            -
-              expression: '{avg(5m)}>=1'
+            - expression: '{avg(5m)}>=1'
               name: 'Docker: containers is stopped'
               priority: HIGH
-        -
-          name: 'Docker: Containers total'
+        - name: 'Docker: Containers total'
           type: DEPENDENT
           key: docker.containers.total
           delay: '0'
           history: 7d
           description: 'Total number of containers on this host'
           applications:
-            -
-              name: Docker
+            - name: Docker
           preprocessing:
-            -
-              type: JSONPATH
+            - type: JSONPATH
               parameters:
                 - $.Containers
           master_item:
             key: docker.info
-        -
-          name: 'Docker: Get images'
+        - name: 'Docker: Get images'
           key: docker.images
           history: '0'
           trends: '0'
           status: DISABLED
           value_type: TEXT
           applications:
-            -
-              name: 'Zabbix raw items'
-        -
-          name: 'Docker: Get info'
+            - name: 'Zabbix raw items'
+        - name: 'Docker: Get info'
           key: docker.info
           history: '0'
           trends: '0'
           value_type: TEXT
           applications:
-            -
-              name: 'Zabbix raw items'
-        -
-          name: 'Docker: Memory total'
+            - name: 'Zabbix raw items'
+        - name: 'Docker: Memory total'
           type: DEPENDENT
           key: docker.mem.total
           delay: '0'
@@ -133,61 +108,51 @@ zabbix_export:
           status: DISABLED
           units: B
           applications:
-            -
-              name: Docker
+            - name: Docker
           preprocessing:
-            -
-              type: JSONPATH
+            - type: JSONPATH
               parameters:
                 - $.MemTotal
           master_item:
             key: docker.info
-        -
-          name: 'Docker: Ping'
+        - name: 'Docker: Ping'
           key: docker.ping
           history: 7h
           applications:
-            -
-              name: Docker
+            - name: Docker
           valuemap:
             name: 'Service state'
           preprocessing:
-            -
-              type: DISCARD_UNCHANGED_HEARTBEAT
+            - type: DISCARD_UNCHANGED_HEARTBEAT
               parameters:
                 - 10m
           triggers:
-            -
-              expression: '{last()}=0'
+            - expression: '{last()}=0'
               name: 'Docker: Service is down'
               priority: AVERAGE
               manual_close: 'YES'
       discovery_rules:
-        -
-          name: 'Containers discovery'
+        - name: 'Containers discovery'
           key: 'docker.containers.discovery[true]'
           delay: 15m
           filter:
             evaltype: AND
             conditions:
-              -
-                macro: '{#NAME}'
+              - macro: '{#NAME}'
                 value: '{$DOCKER.LLD.FILTER.CONTAINER.MATCHES}'
                 formulaid: A
-              -
-                macro: '{#NAME}'
+              - macro: '{#NAME}'
                 value: '{$DOCKER.LLD.FILTER.CONTAINER.NOT_MATCHES}'
                 operator: NOT_MATCHES_REGEX
                 formulaid: B
           description: |
             Discovery for containers metrics
-            
+
             Parameter:
             true  - Returns all containers
             false - Returns only running containers
           item_prototypes:
-            -
-              name: 'Container {#NAME}: Finished at'
+            - name: 'Container {#NAME}: Finished at'
               type: DEPENDENT
               key: 'docker.container_info.finished["{#NAME}"]'
               delay: '0'
@@ -195,43 +160,35 @@ zabbix_export:
               value_type: FLOAT
               units: unixtime
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.State.FinishedAt
-                -
-                  type: DISCARD_UNCHANGED_HEARTBEAT
+                - type: DISCARD_UNCHANGED_HEARTBEAT
                   parameters:
                     - 1d
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
-            -
-              name: 'Container {#NAME}: Restart count'
+            - name: 'Container {#NAME}: Restart count'
               type: DEPENDENT
               key: 'docker.container_info.restart_count["{#NAME}"]'
               delay: '0'
               history: 7d
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.RestartCount
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
               trigger_prototypes:
-                -
-                  expression: '{last()}>5'
+                - expression: '{last()}>5'
                   name: 'Container {#NAME}: restarting constantly'
                   opdata: '{ITEM.VALUE}'
                   priority: HIGH
-            -
-              name: 'Container {#NAME}: Started at'
+            - name: 'Container {#NAME}: Started at'
               type: DEPENDENT
               key: 'docker.container_info.started["{#NAME}"]'
               delay: '0'
@@ -239,21 +196,17 @@ zabbix_export:
               value_type: FLOAT
               units: unixtime
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.State.StartedAt
-                -
-                  type: DISCARD_UNCHANGED_HEARTBEAT
+                - type: DISCARD_UNCHANGED_HEARTBEAT
                   parameters:
                     - 1d
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
-            -
-              name: 'Container {#NAME}: Error'
+            - name: 'Container {#NAME}: Error'
               type: DEPENDENT
               key: 'docker.container_info.state.error["{#NAME}"]'
               delay: '0'
@@ -261,114 +214,93 @@ zabbix_export:
               trends: '0'
               value_type: CHAR
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.State.Error
-                -
-                  type: DISCARD_UNCHANGED_HEARTBEAT
+                - type: DISCARD_UNCHANGED_HEARTBEAT
                   parameters:
                     - 1d
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
               trigger_prototypes:
-                -
-                  expression: '{diff()}=1 and {strlen()}>0'
+                - expression: '{diff()}=1 and {strlen()}>0'
                   name: 'Container {#NAME}: An error has occurred in the container'
                   priority: WARNING
                   description: 'Container {#NAME} has an error. Ack to close.'
                   manual_close: 'YES'
-            -
-              name: 'Container {#NAME}: Exit code'
+            - name: 'Container {#NAME}: Exit code'
               type: DEPENDENT
               key: 'docker.container_info.state.exitcode["{#NAME}"]'
               delay: '0'
               history: 7d
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.State.ExitCode
-                -
-                  type: DISCARD_UNCHANGED_HEARTBEAT
+                - type: DISCARD_UNCHANGED_HEARTBEAT
                   parameters:
                     - 1d
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
-            -
-              name: 'Container {#NAME}: Paused'
+            - name: 'Container {#NAME}: Paused'
               type: DEPENDENT
               key: 'docker.container_info.state.paused["{#NAME}"]'
               delay: '0'
               history: 7d
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               valuemap:
                 name: 'Docker flag'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.State.Paused
-                -
-                  type: BOOL_TO_DECIMAL
+                - type: BOOL_TO_DECIMAL
                   parameters:
                     - ''
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
-            -
-              name: 'Container {#NAME}: Restarting'
+            - name: 'Container {#NAME}: Restarting'
               type: DEPENDENT
               key: 'docker.container_info.state.restarting["{#NAME}"]'
               delay: '0'
               history: 7d
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               valuemap:
                 name: 'Docker flag'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.State.Restarting
-                -
-                  type: BOOL_TO_DECIMAL
+                - type: BOOL_TO_DECIMAL
                   parameters:
                     - ''
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
-            -
-              name: 'Container {#NAME}: Running'
+            - name: 'Container {#NAME}: Running'
               type: DEPENDENT
               key: 'docker.container_info.state.running["{#NAME}"]'
               delay: '0'
               history: 7d
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               valuemap:
                 name: 'Docker flag'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.State.Running
-                -
-                  type: BOOL_TO_DECIMAL
+                - type: BOOL_TO_DECIMAL
                   parameters:
                     - ''
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
-            -
-              name: 'Container {#NAME}: Status'
+            - name: 'Container {#NAME}: Status'
               type: DEPENDENT
               key: 'docker.container_info.state.status["{#NAME}"]'
               delay: '0'
@@ -376,109 +308,86 @@ zabbix_export:
               trends: '0'
               value_type: CHAR
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
               preprocessing:
-                -
-                  type: JSONPATH
+                - type: JSONPATH
                   parameters:
                     - $.State.Status
-                -
-                  type: DISCARD_UNCHANGED_HEARTBEAT
+                - type: DISCARD_UNCHANGED_HEARTBEAT
                   parameters:
                     - 1h
               master_item:
                 key: 'docker.container_info["{#NAME}"]'
-            -
-              name: 'Container {#NAME}: Get info'
+            - name: 'Container {#NAME}: Get info'
               key: 'docker.container_info["{#NAME}"]'
               history: '0'
               trends: '0'
               value_type: CHAR
               description: 'Return low-level information about a container'
               application_prototypes:
-                -
-                  name: 'Docker: Container {#NAME}'
+                - name: 'Docker: Container {#NAME}'
           trigger_prototypes:
-            -
-              expression: '{Docker:docker.container_info.state.exitcode["{#NAME}"].last()}>0 and {Docker:docker.container_info.state.running["{#NAME}"].last()}=0'
+            - expression: '{Docker:docker.container_info.state.exitcode["{#NAME}"].last()}>0 and {Docker:docker.container_info.state.running["{#NAME}"].last()}=0'
               name: 'Container {#NAME}: Container has been stopped with error code'
               opdata: 'Exit code: {ITEM.LASTVALUE1}'
               priority: AVERAGE
               manual_close: 'YES'
       macros:
-        -
-          macro: '{$DOCKER.LLD.FILTER.CONTAINER.MATCHES}'
+        - macro: '{$DOCKER.LLD.FILTER.CONTAINER.MATCHES}'
           value: '.*'
           description: 'Filter of discoverable containers'
-        -
-          macro: '{$DOCKER.LLD.FILTER.CONTAINER.NOT_MATCHES}'
+        - macro: '{$DOCKER.LLD.FILTER.CONTAINER.NOT_MATCHES}'
           value: CHANGE_IF_NEEDED
           description: 'Filter to exclude discovered containers'
-        -
-          macro: '{$DOCKER.LLD.FILTER.IMAGE.MATCHES}'
+        - macro: '{$DOCKER.LLD.FILTER.IMAGE.MATCHES}'
           value: '.*'
           description: 'Filter of discoverable images'
-        -
-          macro: '{$DOCKER.LLD.FILTER.IMAGE.NOT_MATCHES}'
+        - macro: '{$DOCKER.LLD.FILTER.IMAGE.NOT_MATCHES}'
           value: CHANGE_IF_NEEDED
           description: 'Filter to exclude discovered images'
   graphs:
-    -
-      name: 'Docker: Containers'
+    - name: 'Docker: Containers'
       graph_items:
-        -
-          drawtype: GRADIENT_LINE
+        - drawtype: GRADIENT_LINE
           color: 1A7C11
           item:
             host: Docker
             key: docker.containers.running
-        -
-          sortorder: '1'
+        - sortorder: '1'
           drawtype: BOLD_LINE
           color: 2774A4
           item:
             host: Docker
             key: docker.containers.paused
-        -
-          sortorder: '2'
+        - sortorder: '2'
           drawtype: BOLD_LINE
           color: F63100
           item:
             host: Docker
             key: docker.containers.stopped
-        -
-          sortorder: '3'
+        - sortorder: '3'
           drawtype: BOLD_LINE
           color: A54F10
           item:
             host: Docker
             key: docker.containers.total
-    -
-      name: 'Docker: Memory total'
+    - name: 'Docker: Memory total'
       graph_items:
-        -
-          drawtype: BOLD_LINE
+        - drawtype: BOLD_LINE
           color: 1A7C11
           item:
             host: Docker
             key: docker.mem.total
   value_maps:
-    -
-      name: 'Docker flag'
+    - name: 'Docker flag'
       mappings:
-        -
-          value: '0'
+        - value: '0'
           newvalue: 'False'
-        -
-          value: '1'
+        - value: '1'
           newvalue: 'True'
-    -
-      name: 'Service state'
+    - name: 'Service state'
       mappings:
-        -
-          value: '0'
+        - value: '0'
           newvalue: Down
-        -
-          value: '1'
+        - value: '1'
           newvalue: Up
diff --git a/monitoring/templates/Tornado-relayer-template.yaml b/monitoring/templates/Tornado-relayer-template.yaml
index 1a082b4..2644e36 100644
--- a/monitoring/templates/Tornado-relayer-template.yaml
+++ b/monitoring/templates/Tornado-relayer-template.yaml
@@ -2,84 +2,69 @@ zabbix_export:
   version: '5.2'
   date: '2021-12-01T13:26:59Z'
   groups:
-    -
-      name: Templates/Applications
+    - name: Templates/Applications
   templates:
-    -
-      template: Tornado-relayer
+    - template: Tornado-relayer
       name: Tornado-relayer
       groups:
-        -
-          name: Templates/Applications
+        - name: Templates/Applications
       items:
-        -
-          name: 'tornado-relayer: health.error'
+        - name: 'tornado-relayer: health.error'
           type: DEPENDENT
           key: tornado-relayer.health.error
           delay: '0'
           trends: '0'
           value_type: TEXT
           preprocessing:
-            -
-              type: JSONPATH
+            - type: JSONPATH
               parameters:
                 - $.health.error
           master_item:
             key: 'web.page.get[{$URL}]'
           triggers:
-            -
-              expression: '{last()}<>""'
+            - expression: '{last()}<>""'
               name: 'tornado-relayer: health error'
               priority: AVERAGE
-        -
-          name: 'tornado-relayer: health.status'
+        - name: 'tornado-relayer: health.status'
           type: DEPENDENT
           key: tornado-relayer.health.status
           delay: '0'
           trends: '0'
           value_type: TEXT
           preprocessing:
-            -
-              type: JSONPATH
+            - type: JSONPATH
               parameters:
                 - $.health.status
           master_item:
             key: 'web.page.get[{$URL}]'
           triggers:
-            -
-              expression: '{last(#3)}<>"true"'
+            - expression: '{last(#3)}<>"true"'
               name: 'tornado-relayer: health status <> true'
               priority: HIGH
-        -
-          name: 'tornado-relayer: data'
+        - name: 'tornado-relayer: data'
           type: ZABBIX_ACTIVE
           key: 'web.page.get[{$URL}]'
           history: '0'
           trends: '0'
           value_type: TEXT
           preprocessing:
-            -
-              type: REGEX
+            - type: REGEX
               parameters:
                 - '\n\s?\n([\s\S]*)'
                 - \1
       httptests:
-        -
-          name: 'tornado-relayer: status page'
+        - name: 'tornado-relayer: status page'
           agent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/80.0.3987.87 Chrome/80.0.3987.87 Safari/537.36'
           steps:
-            -
-              name: 'status page'
+            - name: 'status page'
               url: '{$URL}'
               follow_redirects: 'NO'
               required: status
               status_codes: '200'
   triggers:
-    -
-      expression: '{Tornado-relayer:web.test.fail[tornado-relayer: status page].last()}>0'
+    - expression: '{Tornado-relayer:web.test.fail[tornado-relayer: status page].last()}>0'
       name: 'tornado-relayer: status page failed'
       priority: AVERAGE
-    -
-      expression: '{Tornado-relayer:web.test.rspcode[tornado-relayer: status page,status page].last(#3)}<>200'
+    - expression: '{Tornado-relayer:web.test.rspcode[tornado-relayer: status page,status page].last(#3)}<>200'
       name: 'tornado-relayer: status page rspcode <>200'
       priority: HIGH