ZBX_SERVER_HOST and ZBX_ACTIVESERVERS causes duplicate

[richard.murray]

Deploying Zabbix agent, if ZBX_SERVER_HOST is given a value "X" and ZBX_ACTIVESERVERS is given the value "X" the agent fails to load with duplicate value in ZBX_ACTIVESERVERS. So the agent is combining the two values...

[richard.murray]

Update, another zabbix-server entry is being added to the ServerActive list which causes the agent to fail.

I think this is a bug.!?

The following yml causes the Zabbix agent to fail;

---
apiVersion: v1
kind: Service
metadata:
name: zabbix-agent
labels:
run: zabbix-agent
spec:
ports:
- port: 10050
protocol: TCP
name: zabbix-passive
selector:
run: zabbix-agent
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: zabbix-agent
spec:
selector:
matchLabels:
run: zabbix-agent
replicas: 1
template:
metadata:
labels:
run: zabbix-agent
spec:
hostname: "zabbix-agent"
containers:
- name: zabbix-agent
image: zabbix/zabbix-agent:ubuntu-latest
env:
- name: ZBX_PASSIVE_ALLOW
value: "false"
- name: ZBX_ACTIVE_ALLOW
value: "true"
- name: ZBX_ACTIVESERVERS
value: "zabbix-server"
- name: ZBX_DEBUGLEVEL
value: "3"
ports:
- containerPort: 10050

Logs from zabbix-agent container;

PS C:\kubectl> .\kubectl.exe logs zabbix-agent-744599fdd5-zf8gl
** Deploying Zabbix agent
** Preparing the system
** Preparing Zabbix agent
** Preparing Zabbix agent configuration file
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "PidFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LogType": 'console'... added
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LogFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LogFileSize": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "DebugLevel": '3'... added
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "SourceIP": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "EnableRemoteCommands": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LogRemoteCommands": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "Server": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "ListenPort": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "ListenIP": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "StartAgents": ''... removed
** Using 'zabbix-server:10051,zabbix-server' servers for active checks
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "ServerActive": 'zabbix-server:10051,zabbix-server'... updated
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "Hostname": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "HostnameItem": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "HostMetadata": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "HostMetadataItem": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "RefreshActiveChecks": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "BufferSend": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "BufferSize": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "MaxLinesPerSecond": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "Timeout": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "Include": '/etc/zabbix/zabbix_agentd.d/'... added first occurrence
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "UnsafeUserParameters": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LoadModulePath": '/var/lib/zabbix/modules/'... added
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSConnect": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSAccept": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSCAFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSCRLFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSServerCertIssuer": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSServerCertSubject": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSCertFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSKeyFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSPSKIdentity": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSPSKFile": ''... removed
** Cleaning the system
################################################## ######
** Starting Zabbix agent
zabbix_agentd [56]: error parsing a "ServerActive" option: address "zabbix-server" specified more than once
PS C:\kubectl>

[dimir]

This is not related to Zabbix, you have some kind of container issue. If it's docker report the issue there:

https://github.com/zabbix/zabbix-docker/issues

[vesper1978]

Looks like it's a kubernetes issue. You could check your base zabbix_agent.conf to see what "ServerActive" is set to before kubernetes applies the values in your yml. I suspect there's already a value in it, and it's being appended and not overwritten.

[richard.murray]

Initially that's what I thought but it's the Zabbix Agent container which is doing the changing. If I don't specify a ZBX_SERVER_HOST it defaults to zabbix-server, but if I specify ZBX_ACTIVESERVERS it duplicates!

You get ** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "ServerActive": 'zabbix-server:10051,zabbix-server'... updated

The "iszabbix-server:10051" not mine!

I think there is some issue with defaults and if this then that logic in the Zabbix Agent docker image..?

This yml snippet;

env:
- name: ZBX_STARTAGENTS
value: "0"
- name: ZBX_PASSIVE_ALLOW
value: "false"
- name: ZBX_ACTIVE_ALLOW
value: "true"
- name: ZBX_ACTIVESERVERS
value: "zabbix-server"
- name: ZBX_DEBUGLEVEL
value: "3"

results in the following;

PS C:\kubectl> .\kubectl.exe logs zabbix-agent-6895744ccf-j9894
** Deploying Zabbix agent
** Preparing the system
** Preparing Zabbix agent
** Preparing Zabbix agent configuration file
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "PidFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LogType": 'console'... added
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LogFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LogFileSize": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "DebugLevel": '3'... added
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "SourceIP": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "EnableRemoteCommands": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LogRemoteCommands": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "Server": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "ListenPort": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "ListenIP": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "StartAgents": '0'... added
** Using 'zabbix-server:10051,zabbix-server' servers for active checks
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "ServerActive": 'zabbix-server:10051,zabbix-server'... updated
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "Hostname": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "HostnameItem": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "HostMetadata": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "HostMetadataItem": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "RefreshActiveChecks": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "BufferSend": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "BufferSize": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "MaxLinesPerSecond": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "Timeout": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "Include": '/etc/zabbix/zabbix_agentd.d/'... added first occurrence
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "UnsafeUserParameters": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "LoadModulePath": '/var/lib/zabbix/modules/'... added
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSConnect": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSAccept": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSCAFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSCRLFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSServerCertIssuer": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSServerCertSubject": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSCertFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSKeyFile": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSPSKIdentity": ''... removed
** Updating '/etc/zabbix/zabbix_agentd.conf' parameter "TLSPSKFile": ''... removed
** Cleaning the system
################################################## ######
** Starting Zabbix agent
zabbix_agentd [59]: error parsing a "ServerActive" option: address "zabbix-server" specified more than once
PS C:\kubectl>

[vesper1978]

So, sounds like the zabbix_agent.conf in your docker image has "ServerActive=zabbix-server:10051" already defined in it. If you want kubernetes to deploy docker images and configure your zabbix-agent then I'd suggest modifying the zabbix_agent.conf in the docker image so that anything you don't want it to append to is left blank.

[juanluisbaptiste]

Hi,

This has nothing to do with kubernetes, it also happens if you launch zabbix on your laptop with the official images. I'm testing 4.4 and this is still happening, sound more like a bug in the official images.

[Daz Romance]

Hi,
Sorry for digging up a very old thread but I have faced this issue recently and found a work around that could help other until this is fixed.

The zabbix_agent2.conf file from the Docker image has "ServerActive=zabbix-server:10051" inside it and the env vars only append values to it. (seen in zabbix/zabbix-agent2:alpine-6.2-latest)

So I just decided to NOT set the ZBX_SERVER_HOST or ZBX_ACTIVESERVERS vars and instead use the HostAlias feature in the daemonset configuration.
With this "zabbix-server" will point to whatever IP you need :

hostAliases:
  - ip: 12.34.56.78
    hostnames:
      - zabbix-server​

This goes under the second "spec" in the daemonset definition.

Hope this helps someone out there