Added support for DNS resolving for SNMP traps image

Dockerfiles/snmptraps/README.md

@@ -58,6 +58,23 @@ The Zabbix snmptraps log is available through Docker's container log:
 $ docker logs  some-zabbix-snmptraps
 ```
 
+## Environment Variables
+
+When you start the `zabbix-snmptraps` image, you can adjust the configuration by passing one or more environment variables on the `docker run` command line.
+
+### `ZBX_SNMP_TRAP_DATE_FORMAT`
+
+This variable is represent date and time format in the output `snmptraps.log` file. By default, value is `+%Y%m%d.%H%M%S`. Please, refer to `date` command man for more details about date and time format.
+
+### `ZBX_SNMP_TRAP_FORMAT`
+
+This variable is SNMP trap format in the output `snmptraps.log` file. By default, value is `\n`, in this case each new variable is placed on new line.
+
+### `ZBX_SNMP_TRAP_USE_DNS`
+
+This variable manages source network address representation. It can be IP address or DNS of SNMP trap sender. The variable works only when container command is modified and "-n" command argument is removed from argument list. By default, value is `false`.
+
+
 ## Allowed volumes for the Zabbix snmptraps container
 
 ### ``/var/lib/zabbix/snmptraps``

Dockerfiles/snmptraps/alpine/Dockerfile

@@ -7,7 +7,8 @@ ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
 ENV TERM=xterm \
     ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
     MIBDIRS=/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
-    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" "
+    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" " \
+    ZBX_SNMP_TRAP_USE_DNS=false
 
 LABEL org.opencontainers.image.authors="Alexey Pustovalov <alexey.pustovalov@zabbix.com>" \
       org.opencontainers.image.description="Zabbix SNMP traps receiver" \

Dockerfiles/snmptraps/alpine/conf/usr/sbin/zabbix_trap_handler.sh

@@ -6,6 +6,8 @@ ZBX_SNMP_TRAP_DATE_FORMAT=${ZBX_SNMP_TRAP_DATE_FORMAT:-"+%Y%m%d.%H%M%S"}
 
 ZBX_SNMP_TRAP_FORMAT=${ZBX_SNMP_TRAP_FORMAT:-" "}
 
+ZBX_SNMP_TRAP_USE_DNS=${ZBX_SNMP_TRAP_USE_DNS:-"false"}
+
 date=$(date "$ZBX_SNMP_TRAP_DATE_FORMAT")
 
 # The name of the host that sent the notification, as determined by gethostbyaddr(3).
@@ -40,4 +42,6 @@ done
 
 ! [ -z $trap_address ] && sender_addr=$trap_address
 
+[[ "$ZBX_SNMP_TRAP_USE_DNS" == "true" ]] && ! [[ ${host} =~ \[(.*?)\].*\-\> ]] && sender_addr=$host
+
 echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$sender$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE

Dockerfiles/snmptraps/centos/Dockerfile

@@ -7,7 +7,8 @@ ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
 ENV TERM=xterm \
     ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
     MIBDIRS=/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
-    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" "
+    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" " \
+    ZBX_SNMP_TRAP_USE_DNS=false
 
 LABEL org.opencontainers.image.authors="Alexey Pustovalov <alexey.pustovalov@zabbix.com>" \
       org.opencontainers.image.description="Zabbix SNMP traps receiver" \

Dockerfiles/snmptraps/centos/conf/usr/sbin/zabbix_trap_handler.sh

@@ -6,6 +6,8 @@ ZBX_SNMP_TRAP_DATE_FORMAT=${ZBX_SNMP_TRAP_DATE_FORMAT:-"+%Y%m%d.%H%M%S"}
 
 ZBX_SNMP_TRAP_FORMAT=${ZBX_SNMP_TRAP_FORMAT:-" "}
 
+ZBX_SNMP_TRAP_USE_DNS=${ZBX_SNMP_TRAP_USE_DNS:-"false"}
+
 date=$(date "$ZBX_SNMP_TRAP_DATE_FORMAT")
 
 # The name of the host that sent the notification, as determined by gethostbyaddr(3).
@@ -40,4 +42,6 @@ done
 
 ! [ -z $trap_address ] && sender_addr=$trap_address
 
-echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE
+[[ "$ZBX_SNMP_TRAP_USE_DNS" == "true" ]] && ! [[ ${host} =~ \[(.*?)\].*\-\> ]] && sender_addr=$host
+
+echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$sender$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE

Dockerfiles/snmptraps/ol/Dockerfile

@@ -7,7 +7,8 @@ ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
 ENV TERM=xterm \
     ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
     MIBDIRS=/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
-    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" "
+    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" " \
+    ZBX_SNMP_TRAP_USE_DNS=false
 
 LABEL org.opencontainers.image.authors="Alexey Pustovalov <alexey.pustovalov@zabbix.com>" \
       org.opencontainers.image.description="Zabbix SNMP traps receiver" \

Dockerfiles/snmptraps/ol/conf/usr/sbin/zabbix_trap_handler.sh

@@ -6,6 +6,8 @@ ZBX_SNMP_TRAP_DATE_FORMAT=${ZBX_SNMP_TRAP_DATE_FORMAT:-"+%Y%m%d.%H%M%S"}
 
 ZBX_SNMP_TRAP_FORMAT=${ZBX_SNMP_TRAP_FORMAT:-"\n"}
 
+ZBX_SNMP_TRAP_USE_DNS=${ZBX_SNMP_TRAP_USE_DNS:-"false"}
+
 date=$(date "$ZBX_SNMP_TRAP_DATE_FORMAT")
 
 # The name of the host that sent the notification, as determined by gethostbyaddr(3).
@@ -40,4 +42,6 @@ done
 
 ! [ -z $trap_address ] && sender_addr=$trap_address
 
-echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE
+[[ "$ZBX_SNMP_TRAP_USE_DNS" == "true" ]] && ! [[ ${host} =~ \[(.*?)\].*\-\> ]] && sender_addr=$host
+
+echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$sender$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE

Dockerfiles/snmptraps/rhel/Dockerfile

@@ -9,7 +9,8 @@ ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
 ENV TERM=xterm \
     ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
     MIBDIRS=/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
-    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" "
+    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" " \
+    ZBX_SNMP_TRAP_USE_DNS=false
 
 LABEL description="Zabbix SNMP traps receiver" \
       maintainer="alexey.pustovalov@zabbix.com" \

Dockerfiles/snmptraps/rhel/conf/usr/sbin/zabbix_trap_handler.sh

@@ -6,6 +6,8 @@ ZBX_SNMP_TRAP_DATE_FORMAT=${ZBX_SNMP_TRAP_DATE_FORMAT:-"+%Y%m%d.%H%M%S"}
 
 ZBX_SNMP_TRAP_FORMAT=${ZBX_SNMP_TRAP_FORMAT:-"\n"}
 
+ZBX_SNMP_TRAP_USE_DNS=${ZBX_SNMP_TRAP_USE_DNS:-"false"}
+
 date=$(date "$ZBX_SNMP_TRAP_DATE_FORMAT")
 
 # The name of the host that sent the notification, as determined by gethostbyaddr(3).
@@ -40,4 +42,6 @@ done
 
 ! [ -z $trap_address ] && sender_addr=$trap_address
 
-echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE
+[[ "$ZBX_SNMP_TRAP_USE_DNS" == "true" ]] && ! [[ ${host} =~ \[(.*?)\].*\-\> ]] && sender_addr=$host
+
+echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$sender$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE

Dockerfiles/snmptraps/ubuntu/Dockerfile

@@ -7,7 +7,8 @@ ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
 ENV TERM=xterm \
     ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
     MIBDIRS=/var/lib/snmp/mibs/ietf:/var/lib/snmp/mibs/iana:/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL \
-    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" "
+    ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S ZBX_SNMP_TRAP_FORMAT=" " \
+    ZBX_SNMP_TRAP_USE_DNS=false
 
 LABEL org.opencontainers.image.authors="Alexey Pustovalov <alexey.pustovalov@zabbix.com>" \
       org.opencontainers.image.description="Zabbix SNMP traps receiver" \

Dockerfiles/snmptraps/ubuntu/conf/usr/sbin/zabbix_trap_handler.sh

@@ -6,6 +6,8 @@ ZBX_SNMP_TRAP_DATE_FORMAT=${ZBX_SNMP_TRAP_DATE_FORMAT:-"+%Y%m%d.%H%M%S"}
 
 ZBX_SNMP_TRAP_FORMAT=${ZBX_SNMP_TRAP_FORMAT:-" "}
 
+ZBX_SNMP_TRAP_USE_DNS=${ZBX_SNMP_TRAP_USE_DNS:-"false"}
+
 date=$(date "$ZBX_SNMP_TRAP_DATE_FORMAT")
 
 # The name of the host that sent the notification, as determined by gethostbyaddr(3).
@@ -40,4 +42,6 @@ done
 
 ! [ -z $trap_address ] && sender_addr=$trap_address
 
-echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE
+[[ "$ZBX_SNMP_TRAP_USE_DNS" == "true" ]] && ! [[ ${host} =~ \[(.*?)\].*\-\> ]] && sender_addr=$host
+
+echo -e "$date ZBXTRAP $sender_addr$ZBX_SNMP_TRAP_FORMAT$sender$ZBX_SNMP_TRAP_FORMAT$vars" >> $ZABBIX_TRAPS_FILE

docker-compose_v3_alpine_mysql_latest.yaml

@@ -358,6 +358,9 @@ services:
 
  zabbix-snmptraps:
   image: zabbix/zabbix-snmptraps:alpine-5.0-latest
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -373,6 +376,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_alpine_mysql_local.yaml

@@ -444,6 +444,9 @@ services:
    cache_from:
     - alpine:3.14
   image: zabbix-snmptraps:alpine-local
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -459,6 +462,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_alpine_pgsql_latest.yaml

@@ -349,6 +349,9 @@ services:
 
  zabbix-snmptraps:
   image: zabbix/zabbix-snmptraps:alpine-5.0-latest
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -364,6 +367,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_alpine_pgsql_local.yaml

@@ -448,6 +448,9 @@ services:
    cache_from:
     - alpine:3.14
   image: zabbix-snmptraps:alpine-local
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -463,6 +466,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_centos_mysql_latest.yaml

@@ -358,6 +358,9 @@ services:
 
  zabbix-snmptraps:
   image: zabbix/zabbix-snmptraps:centos-5.0-latest
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -373,6 +376,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_centos_mysql_local.yaml

@@ -444,6 +444,9 @@ services:
    cache_from:
     - quay.io/centos/centos:stream8
   image: zabbix-snmptraps:centos-local
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -459,6 +462,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_centos_pgsql_latest.yaml

@@ -349,6 +349,9 @@ services:
 
  zabbix-snmptraps:
   image: zabbix/zabbix-snmptraps:centos-5.0-latest
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -364,6 +367,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_centos_pgsql_local.yaml

@@ -448,6 +448,9 @@ services:
    cache_from:
     - quay.io/centos/centos:stream8
   image: zabbix-snmptraps:centos-local
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -463,6 +466,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_ol_mysql_latest.yaml

@@ -358,6 +358,9 @@ services:
 
  zabbix-snmptraps:
   image: zabbix/zabbix-snmptraps:ol-5.0-latest
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -373,6 +376,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_ol_mysql_local.yaml

@@ -444,6 +444,9 @@ services:
    cache_from:
     - oraclelinux:8-slim
   image: zabbix-snmptraps:ol-local
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -459,6 +462,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_ol_pgsql_latest.yaml

@@ -349,6 +349,9 @@ services:
 
  zabbix-snmptraps:
   image: zabbix/zabbix-snmptraps:ol-5.0-latest
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -364,6 +367,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_ol_pgsql_local.yaml

@@ -448,6 +448,9 @@ services:
    cache_from:
     - oraclelinux:8-slim
   image: zabbix-snmptraps:ol-local
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -463,6 +466,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_ubuntu_mysql_latest.yaml

@@ -350,6 +350,9 @@ services:
 
  zabbix-snmptraps:
   image: zabbix/zabbix-snmptraps:ubuntu-5.0-latest
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -365,6 +368,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_ubuntu_mysql_local.yaml

@@ -438,6 +438,9 @@ services:
    cache_from:
     - ubuntu:focal
   image: zabbix-snmptraps:ubuntu-local
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -453,6 +456,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_ubuntu_pgsql_latest.yaml

@@ -343,6 +343,9 @@ services:
 
  zabbix-snmptraps:
   image: zabbix/zabbix-snmptraps:ubuntu-5.0-latest
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -358,6 +361,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

docker-compose_v3_ubuntu_pgsql_local.yaml

@@ -442,6 +442,9 @@ services:
    cache_from:
     - ubuntu:focal
   image: zabbix-snmptraps:ubuntu-local
+# Override snmptrapd command arguments to receive SNMP traps by DNS
+# It must be done with ZBX_SNMP_TRAP_USE_DNS=true environment variable
+#  command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
   profiles:
    - full
    - all
@@ -457,6 +460,8 @@ services:
     reservations:
       cpus: '0.25'
       memory: 128M
+  env_file:
+   - ./env_vars/.env_snmptraps
   networks:
    zbx_net_frontend:
     aliases:

env_vars/.env_snmptraps

@@ -0,0 +1,5 @@
+ZBX_SNMP_TRAP_DATE_FORMAT=+%Y%m%d.%H%M%S
+ZBX_SNMP_TRAP_FORMAT=\n
+# To use DNS instead of sender IP override container's command: /usr/sbin/snmptrapd -C -c /etc/snmp/snmptrapd.conf -Lo -A
+# Need to remove "-n" command argument
+ZBX_SNMP_TRAP_USE_DNS=false