Zabbix Proxy - config.refresh_unsupported message

[nilldot]

Gents,
Odd issue after update. Proxy server getting config.refresh_unsupported and refuse to function properly. Can't downgrade, as DB was 5.2 updated

#ENV

#Server
OS CentOS 7

zabbix-sender-5.2.2-1.el7.x86_64
zabbix-web-mysql-scl-5.0.6-1.el7.noarch
zabbix-server-mysql-5.0.6-1.el7.x86_64
zabbix-release-5.2-1.el7.noarch
zabbix-get-5.2.2-1.el7.x86_64
zabbix-web-deps-scl-5.0.6-1.el7.noarch
zabbix-agent2-5.2.2-1.el7.x86_64
percona-zabbix-templates-1.1.6-1.noarch
zabbix-web-5.0.6-1.el7.noarch
zabbix-apache-conf-scl-5.0.6-1.el7.noarch
zabbix-agent-5.2.2-1.el7.x86_64


#proxy
zabbix-sender-5.2.2-1.el7.x86_64
zabbix-proxy-mysql-5.2.2-1.el7.x86_64
zabbix-agent-5.2.2-1.el7.x86_64
zabbix-release-5.2-1.el7.noarch


#Proxy log
4221:20201208:074652.724 using configuration file: /etc/zabbix/zabbix_proxy.conf
4221:20201208:074652.737 current database version (mandatory/optional): 05020000/05020000
4221:20201208:074652.738 required mandatory version: 05020000
4221:20201208:074652.755 proxy #0 started [main process]
4226:20201208:074652.756 proxy #1 started [configuration syncer #1]
4234:20201208:074652.867 proxy #8 started [data sender #1]
4230:20201208:074652.871 proxy #4 started [trapper #3]
4231:20201208:074652.882 proxy #5 started [trapper #4]
4232:20201208:074652.893 proxy #6 started [trapper #5]
4228:20201208:074652.904 proxy #2 started [trapper #1]
4233:20201208:074652.915 proxy #7 started [heartbeat sender #1]
4229:20201208:074652.920 proxy #3 started [trapper #2]
4235:20201208:074652.930 proxy #9 started [housekeeper #1]
4241:20201208:074652.930 proxy #15 started [history syncer #4]
4243:20201208:074652.931 proxy #17 started [task manager #1]
4244:20201208:074652.941 proxy #18 started [poller #1]
4246:20201208:074652.952 proxy #20 started [poller #3]
4249:20201208:074652.963 proxy #23 started [unreachable poller #1]
4242:20201208:074652.974 proxy #16 started [self-monitoring #1]
4238:20201208:074652.975 proxy #12 started [history syncer #1]
4251:20201208:074652.976 proxy #25 started [preprocessing manager #1]
4236:20201208:074652.977 proxy #10 started [http poller #1]
4237:20201208:074652.977 proxy #11 started [discoverer #1]
4240:20201208:074652.988 proxy #14 started [history syncer #3]
4245:20201208:074652.989 proxy #19 started [poller #2]
4247:20201208:074652.999 proxy #21 started [poller #4]
4250:20201208:074653.011 proxy #24 started [icmp pinger #1]
4239:20201208:074653.012 proxy #13 started [history syncer #2]
4248:20201208:074653.012 proxy #22 started [poller #5]
4253:20201208:074653.022 proxy #27 started [preprocessing worker #2]
4254:20201208:074653.023 proxy #28 started [preprocessing worker #3]
4252:20201208:074653.082 proxy #26 started [preprocessing worker #1]
4226:20201208:074653.328 received configuration data from server at "REPLACED", datalen 225695
4226:20201208:074653.759 failed to update local proxy configuration copy: invalid field name "config.refresh_unsupported"

Likely proxy 5.2 and server 5.0.2 mismatch. Any ideas how to address that ? Also, no RPMs for server 5.2 on CentOS 7 server, which is a pain to deal with

Thanks!

[Hamardaban]

In the latest updates, the proxy and server versions must match. Otherwise, you will get errors and a broken system.
Now what to do: roll back the proxy installation to 5.0.6 !
The database on the proxy can be safely deleted and re-created in the required version from the distribution.
All necessary data will be taken from the server.

[nilldot]

That’s what we did actually. Downgraded to match server version and we are back in business.

Thanks!