fail to connect mariadb container about dockbix-xxl HOT 7 CLOSED

I'm not able to replicate your issue. You are probably using some non standard docker version/config, ... Pls provide more details about your infrastructure OS, docker version (source of you docker package), config, networking/firewall settings, ...

from dockbix-xxl.

@jangaraj
here my server info:
[root@docker ~]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
[root@docker ~]# uname -a
Linux docker.exmaple.com 3.10.0-327.el7.x86_64 #1 SMP Thu Nov 19 22:10:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
[root@docker ~]# yum list|grep -i docker
docker-engine.x86_64 1.11.2-1.el7.centos @docker-main-repo
docker-engine-selinux.noarch 1.11.2-1.el7.centos @docker-main-repo

[root@docker ~]# docker info
Containers: 64
Running: 2
Paused: 0
Stopped: 62
Images: 101
Server Version: 1.11.2
Storage Driver: devicemapper
Pool Name: docker-0:39-9308151-pool
Pool Blocksize: 65.54 kB
Base Device Size: 10.74 GB
Backing Filesystem: xfs
Data file: /dev/loop0
Metadata file: /dev/loop1
Data Space Used: 26.59 GB
Data Space Total: 107.4 GB
Data Space Available: 80.79 GB
Metadata Space Used: 51.63 MB
Metadata Space Total: 2.147 GB
Metadata Space Available: 2.096 GB
Udev Sync Supported: true
Deferred Removal Enabled: false
Deferred Deletion Enabled: false
Deferred Deleted Device Count: 0
Data loop file: /var/lib/docker/devicemapper/devicemapper/data
WARNING: Usage of loopback devices is strongly discouraged for production use. Either use --storage-opt dm.thinpooldev or use --storage-opt dm.no_warn_on_loop_devices=true to suppress this warning.
Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
Library Version: 1.02.107-RHEL7 (2015-10-14)
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: null host bridge
Kernel Version: 3.10.0-327.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 1.79 GiB
Name: docker.exmaple.com
ID: NG7C:ZA2R:QUPK:WLVY:HLCU:7SFT:ANXC:CPIZ:AT65:FUG7:ZQQZ:CF6I
Docker Root Dir: /var/lib/docker
Debug mode (client): false
Debug mode (server): false
Registry: https://index.docker.io/v1/
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled

[root@docker ~]# systemctl status firewalld.service
?.firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: inactive (dead)

Jun 21 03:34:37 docker.exmaple.com systemd[1]: Stopped firewalld - dynamic firewall daemon.
[root@docker ~]# getenforce
Disabled

from dockbix-xxl.

It seems to be OK. How looks /etc/hosts in the zabbix container? Do you use custom docker network, builtin Docker DNS server?

from dockbix-xxl.

@jangaraj
i try two ways to test; but i don't create network, using default .

1. just tow docker run command to create two containers, upstairs
   2.i use docker-compose to create zabbix and zabbixdb container.

[root@docker zabbixdocker]# cat docker-compose.yaml
version: '2'
services:
zabbix:
#build: .
image: monitoringartist/zabbix-3.0-xxl
container_name: zabbix
#restart: always
networks:
- zxnet
ports:
- "80:80"
- "15001:15001"
- "15002:15002"
volumes:
- /root/zabbixdocker/alertscripts:/usr/local/share/zabbix/alertscripts
- /root/zabbixdocker/externalscripts:/usr/local/share/zabbix/externalscripts
- /root/zabbixdocker/modules:/usr/lib/zabbix/modules
- /etc/localtime:/etc/localtime:ro
links:
- zabbix-db
environment:
- ZS_DBHost=zabbix.db
- ZS_DBUser=zabbix
- ZS_DBPassword=zabbixpass
zabbix-db:
image: monitoringartist/zabbix-db-mariadb
container_name: zabbix.db
#restart: always
networks:
zxnet:
aliases:
- zabbix.db
expose:
- 3306
volumes:
- /root/zabbixdocker/zabbixdbdata:/var/lib/mysql
- /backups:/backups
- /etc/localtime:/etc/localtime:ro
environment:
- MARIADB_USER=zabbix
- MARIADB_PASS=zabbixpass

networks:
zxnet:

from dockbix-xxl.

@jangaraj

[root@docker zabbixdocker]# docker exec -it zabbix /bin/bash
[root@2d9f413879c9 /]# cat /etc/hosts
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.20.0.3 2d9f413879c9
[root@2d9f413879c9 /]# ping zabbix.db
PING zabbix.db (172.20.0.2) 56(84) bytes of data.
64 bytes from zabbix.db.zabbixdocker_zxnet (172.20.0.2): icmp_seq=1 ttl=64 time=0.160 ms
64 bytes from zabbix.db.zabbixdocker_zxnet (172.20.0.2): icmp_seq=2 ttl=64 time=0.074 ms
64 bytes from zabbix.db.zabbixdocker_zxnet (172.20.0.2): icmp_seq=3 ttl=64 time=0.150 ms
^C
--- zabbix.db ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2098ms
rtt min/avg/max/mdev = 0.074/0.128/0.160/0.038 ms
[root@2d9f413879c9 /]# mysql -uzabbix -p -h zabbix.db
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 12
Server version: 10.0.25-MariaDB MariaDB Server

Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> exit
Bye
[root@2d9f413879c9 /]# exit
exit
[root@docker zabbixdocker]# docker exec -it zabbix.db /bin/bash
[root@1a6e00366316 /]# cat /etc/hosts
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.20.0.2 1a6e00366316
[root@1a6e00366316 /]# ping zabbix
PING zabbix (172.20.0.3) 56(84) bytes of data.
64 bytes from zabbix.zabbixdocker_zxnet (172.20.0.3): icmp_seq=1 ttl=64 time=0.063 ms
64 bytes from zabbix.zabbixdocker_zxnet (172.20.0.3): icmp_seq=2 ttl=64 time=0.115 ms
64 bytes from zabbix.zabbixdocker_zxnet (172.20.0.3): icmp_seq=3 ttl=64 time=0.105 ms
^C
--- zabbix ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2004ms
rtt min/avg/max/mdev = 0.063/0.094/0.115/0.023 ms
[root@1a6e00366316 /]#

from dockbix-xxl.

You have network defined in your docker-compose:

networks:
- zxnet

=> you are using Docker DNS in your Docker network, e.g. you have DNS record zabbix.db.zabbixdocker_zxnet.

Also you are mixing zabbixdb vs zabbix.db, manual container start with docker compose => you issue report is not consistent, so I'm still not sure what are you doing.

Definetely you are not using recommended settings in your docker-compose. I'm not saying that's a problem, but you must to study Docker doc how to set it up properly on your own in this case.

from dockbix-xxl.

I'm closing this issue. Feel free to ask for commercial support for your issue.

from dockbix-xxl.