Not running Webmin version 1.202 or above

ambercromby · September 15, 2021, 10:22pm

On both server a new
CentOS 7.9.2009
Linux 3.10.0-1160.42.2.el7.x86_64 on x86_64
Webmin 1.981
Firewalld opened service DNS and ports 10000-10010 (also have stop firewalld on both for testing)
I’m following the document here by…
Added slave server via Webmin Server Index
The server appears in Cluster Slave Servers
Then I get " Server server is not running Webmin version 1.202 or above."

In my first attempt I was able to get my old CentOS 6 server to work with a newly built system, but not the third. The one I could setup as slave could connect with the third server but not the other way around. I scratched all of that and created two new machines to start from scratch so I could my old nameservers up to prevent DNS issues. This really through me for a loop why some work and some don’t, thus two fresh clean systems.

Here I don’t see the port or ndmp change to webmin (something like that when I monitored a good connection)
TCPDUMP

15:04:11.004460 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [S], seq 4133328205, win 29200, options [mss 1460,sackOK,TS val 4855092 ecr 0,nop,wscale 7], length 0
15:04:11.004963 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 907491861, win 229, options [nop,nop,TS val 4855093 ecr 6043217], length 0
15:04:11.007109 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [P.], seq 0:321, ack 1, win 229, options [nop,nop,TS val 4855095 ecr 6043217], length 321
15:04:11.019751 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 1041, win 245, options [nop,nop,TS val 4855107 ecr 6043222], length 0
15:04:11.020264 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [P.], seq 321:639, ack 1041, win 245, options [nop,nop,TS val 4855108 ecr 6043222], length 318
15:04:11.024614 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [P.], seq 639:696, ack 1283, win 261, options [nop,nop,TS val 4855112 ecr 6043237], length 57
15:04:11.065020 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [P.], seq 696:1118, ack 1283, win 261, options [nop,nop,TS val 4855153 ecr 6043278], length 422
15:04:13.280794 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 2876, win 300, options [nop,nop,TS val 4857369 ecr 6045484], length 0
15:04:13.280893 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 7220, win 368, options [nop,nop,TS val 4857369 ecr 6045487], length 0
15:04:13.281002 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 14460, win 481, options [nop,nop,TS val 4857369 ecr 6045489], length 0
15:04:13.281300 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 20252, win 571, options [nop,nop,TS val 4857369 ecr 6045494], length 0
15:04:13.281330 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 24596, win 639, options [nop,nop,TS val 4857369 ecr 6045494], length 0
15:04:13.281348 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 30388, win 730, options [nop,nop,TS val 4857369 ecr 6045494], length 0
15:04:13.281470 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 33284, win 775, options [nop,nop,TS val 4857369 ecr 6045494], length 0
15:04:13.281482 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 37628, win 843, options [nop,nop,TS val 4857369 ecr 6045494], length 0
15:04:13.281674 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 43420, win 891, options [nop,nop,TS val 4857369 ecr 6045494], length 0
15:04:13.282259 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [S], seq 3986674864, win 29200, options [mss 1460,sackOK,TS val 4857370 ecr 0,nop,wscale 7], length 0
15:04:13.282649 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [.], ack 1154455559, win 229, options [nop,nop,TS val 4857370 ecr 6045495], length 0
15:04:13.288898 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [P.], seq 0:321, ack 1, win 229, options [nop,nop,TS val 4857377 ecr 6045495], length 321
15:04:13.291579 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [.], ack 1041, win 245, options [nop,nop,TS val 4857379 ecr 6045503], length 0
15:04:13.291995 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [P.], seq 321:639, ack 1041, win 245, options [nop,nop,TS val 4857380 ecr 6045503], length 318
15:04:13.298473 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [P.], seq 639:696, ack 1283, win 261, options [nop,nop,TS val 4857386 ecr 6045510], length 57
15:04:13.320778 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 81068, win 597, options [nop,nop,TS val 4857409 ecr 6045494], length 0
15:04:13.337880 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [P.], seq 696:1168, ack 1283, win 261, options [nop,nop,TS val 4857426 ecr 6045551], length 472
15:04:13.360726 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 131748, win 202, options [nop,nop,TS val 4857449 ecr 6045534], length 0
15:04:13.400820 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 149124, win 67, options [nop,nop,TS val 4857489 ecr 6045574], length 0
15:04:13.440898 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 154916, win 22, options [nop,nop,TS val 4857529 ecr 6045614], length 0
15:04:13.476362 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [.], ack 2804, win 284, options [nop,nop,TS val 4857564 ecr 6045689], length 0
15:04:13.477277 IP pri.nameserver.43964 > sec.nameserver.ndmp: Flags [R.], seq 1168, ack 4240, win 306, options [nop,nop,TS val 4857565 ecr 6045689], length 0
15:04:13.477329 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [S], seq 2815079211, win 29200, options [mss 1460,sackOK,TS val 4857565 ecr 0,nop,wscale 7], length 0
15:04:13.477661 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [.], ack 2965620687, win 229, options [nop,nop,TS val 4857566 ecr 6045690], length 0
15:04:13.477810 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [P.], seq 0:321, ack 1, win 229, options [nop,nop,TS val 4857566 ecr 6045690], length 321
15:04:13.480713 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 157732, win 0, options [nop,nop,TS val 4857569 ecr 6045654], length 0
15:04:13.482068 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [.], ack 1041, win 245, options [nop,nop,TS val 4857570 ecr 6045695], length 0
15:04:13.482449 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [P.], seq 321:639, ack 1041, win 245, options [nop,nop,TS val 4857570 ecr 6045695], length 318
15:04:13.486137 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [P.], seq 639:696, ack 1283, win 261, options [nop,nop,TS val 4857574 ecr 6045699], length 57
15:04:13.526115 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [P.], seq 696:1206, ack 1283, win 261, options [nop,nop,TS val 4857614 ecr 6045739], length 510
15:04:13.662405 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [.], ack 2804, win 284, options [nop,nop,TS val 4857750 ecr 6045875], length 0
15:04:13.663004 IP pri.nameserver.43966 > sec.nameserver.ndmp: Flags [R.], seq 1206, ack 4240, win 306, options [nop,nop,TS val 4857751 ecr 6045875], length 0
15:04:13.663178 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [S], seq 3160892343, win 29200, options [mss 1460,sackOK,TS val 4857751 ecr 0,nop,wscale 7], length 0
15:04:13.663580 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 1347215365, win 229, options [nop,nop,TS val 4857751 ecr 6045876], length 0
15:04:13.663739 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [P.], seq 0:321, ack 1, win 229, options [nop,nop,TS val 4857752 ecr 6045876], length 321
15:04:13.667550 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 1041, win 245, options [nop,nop,TS val 4857755 ecr 6045880], length 0
15:04:13.667970 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [P.], seq 321:639, ack 1041, win 245, options [nop,nop,TS val 4857756 ecr 6045880], length 318
15:04:13.671697 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [P.], seq 639:696, ack 1283, win 261, options [nop,nop,TS val 4857760 ecr 6045884], length 57
15:04:13.701953 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [.], ack 157732, win 0, options [nop,nop,TS val 4857790 ecr 6045654], length 0
15:04:13.711989 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [P.], seq 696:1186, ack 1283, win 261, options [nop,nop,TS val 4857800 ecr 6045925], length 490
15:04:13.846903 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 2804, win 284, options [nop,nop,TS val 4857935 ecr 6046059], length 0
15:04:13.850919 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 11480, win 419, options [nop,nop,TS val 4857939 ecr 6046060], length 0
15:04:13.851079 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 14376, win 465, options [nop,nop,TS val 4857939 ecr 6046064], length 0
15:04:13.851098 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 17272, win 510, options [nop,nop,TS val 4857939 ecr 6046064], length 0
15:04:13.851276 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 20168, win 555, options [nop,nop,TS val 4857939 ecr 6046064], length 0
15:04:13.851301 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 24512, win 623, options [nop,nop,TS val 4857939 ecr 6046064], length 0
15:04:13.851452 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 30304, win 714, options [nop,nop,TS val 4857939 ecr 6046064], length 0
15:04:13.851476 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 33200, win 759, options [nop,nop,TS val 4857939 ecr 6046064], length 0
15:04:13.851483 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 36096, win 804, options [nop,nop,TS val 4857939 ecr 6046064], length 0
15:04:13.851496 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [.], ack 41888, win 895, options [nop,nop,TS val 4857939 ecr 6046064], length 0
15:04:13.854865 IP pri.nameserver.43962 > sec.nameserver.ndmp: Flags [R.], seq 1118, ack 157732, win 933, options [nop,nop,TS val 4857943 ecr 6045654], length 0
15:04:13.854916 IP pri.nameserver.43968 > sec.nameserver.ndmp: Flags [R.], seq 1186, ack 95464, win 917, options [nop,nop,TS val 4857943 ecr 6046064], length 0

unborn · September 16, 2021, 1:11pm

hi - just update your os and everything you are running…

ambercromby · September 16, 2021, 4:28pm

Everything IS up to date with most current stable.

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile

base: repo1.sea.innoscale.net
extras: mirrors.xtom.com
updates: mirror.chpc.utah.edu
No packages marked for update

ambercromby · September 16, 2021, 8:37pm

I’ve re-created the servers with CentOS 8 with same issue
Operating System: CentOS Stream 8
CPE OS Name: cpe:/o:centos:centos:8
Kernel: Linux 4.18.0-338.el8.x86_64
Architecture: x86-64

ambercromby · September 16, 2021, 9:50pm

Not sure why my original attempt didn’t work but it finally started to work without fussing around with ever nob and dial.

Once I was able to get a successful connection I wanted to lock things down between the server.

I had issues with a limited webmin DNS module user until I created a system user and told webmin to use the unix user. Prior to creating system user it came back with the same error message but the logs were also showing invalid user and was simple to figure out what was needed.

Now it’s working as expected.

system · September 24, 2021, 9:51pm

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