[Solved] Enable ipv6 error

Checking the logs installation of Postfix was ok:

Code:

Loaded plugins: fastestmirror, versionlock
Loading mirror speeds from cached hostfile
 * base: centosmirror.netcup.net
 * centos-sclo-rh: mirror.ratiokontakt.de
 * centos-sclo-sclo: centosmirror.netcup.net
 * extras: centosmirror.netcup.net
 * updates: mirror.plustech.de
Resolving Dependencies
--> Running transaction check
---> Package postfix.x86_64 2:2.10.1-7.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package          Arch            Version                   Repository     Size
================================================================================
Installing:
 postfix          x86_64          2:2.10.1-7.el7            base          2.4 M

Transaction Summary
================================================================================
Install  1 Package

Total download size: 2.4 M
Installed size: 12 M
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : 2:postfix-2.10.1-7.el7.x86_64                                1/1
  Verifying  : 2:postfix-2.10.1-7.el7.x86_64                                1/1

Installed:
  postfix.x86_64 2:2.10.1-7.el7                                               

Complete!

Next reference:

Code:

smtp_tls_CAfile =
smtp_tls_security_level =
smtp_tls_loglevel = 0
smtp_tls_session_cache_database =
Redirecting to /bin/systemctl reload postfix.service
Job for postfix.service invalid.
smtp_tls_CAfile = /etc/pki/tls/certs/ca-bundle.crt
smtp_tls_security_level = may
smtp_tls_loglevel = 1
smtp_tls_session_cache_database = btree:/var/lib/postfix/smtp_scache
inet_protocols = all
inet_protocols = ipv4
1024000000
*************************************************
[1;32;40mPostfix already detected, postfix install aborted
(B[m*************************************************

Job for postfix.service invalid.

Don't know if that helps....

So the issues are:

---

1)When a user install Centminmod using DISABLE_IPVSIX='y' Postfix is not working/starting:

Code:

Dec 07 23:07:06 server.mydomain.com systemd[1]: Unit postfix.service cannot be reloaded because it is inactive.

2)When a user install GlusterFS:

Code:

yum install centos-release-gluster
yum install glusterfs-server --disableplugin=priorities -q

and a user uses DISABLE_IPVSIX='y' then the Rpcbind service will not start and will never start automatically at server reboot.

 

Hope that the fix will take care existing installations that was used DISABLE_IPVSIX='y' too

Is your fix also related to the issue on clean install at my post #21:

https://community.centminmod.com/threads/enable-ipv6-error.18792/page-2#post-79984

?

 

Just test it and it doesn't work as expected.

I had DISABLE_IPVSIX='y' and i checked both services and was running with no issues.

Then i restart the server and postfix was ok. Didn't check rpcbind.

after that i did a test to change it to DISABLE_IPVSIX='n' and run centminmod

That killed postfix without even restarting the server:

Code:

systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
   Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Sat 2019-12-07 23:57:35 UTC; 4min 13s ago
 Main PID: 1507 (code=killed, signal=TERM)

Dec 07 23:57:33 haproxy systemd[1]: Unit postfix.service entered failed state.
Dec 07 23:57:33 haproxy systemd[1]: postfix.service failed.
Dec 07 23:57:33 haproxy systemd[1]: Starting Postfix Mail Transport Agent...
Dec 07 23:57:33 haproxy aliasesdb[2296]: /usr/sbin/postconf: fatal: parameter inet_interfaces: no local interface found for ::1
Dec 07 23:57:34 haproxy aliasesdb[2296]: newaliases: fatal: parameter inet_interfaces: no local interface found for ::1
Dec 07 23:57:34 haproxy postfix[2302]: fatal: parameter inet_interfaces: no local interface found for ::1
Dec 07 23:57:35 haproxy systemd[1]: postfix.service: control process exited, code=exited status=1
Dec 07 23:57:35 haproxy systemd[1]: Failed to start Postfix Mail Transport Agent.
Dec 07 23:57:35 haproxy systemd[1]: Unit postfix.service entered failed state.
Dec 07 23:57:35 haproxy systemd[1]: postfix.service failed.

Can you please re check my server or the code in the fix?

The fix may need some tweaking...?

 

Yes both services worked and after reboot i check Postfix and was working great. Didn't check rpcbind but probably was ok too.

Then i changed it to from DISABLE_IPVSIX='y' as you left it to DISABLE_IPVSIX='n' and i run Centminmod and then i check the status of Postfix and was not working...

Changing from DISABLE_IPVSIX='y' to DISABLE_IPVSIX='n' and the opposite should keep postfix/rpcbind running and should be running also after reboots.

 

Your fix from DISABLE_IPVSIX='n' to DISABLE_IPVSIX='y' was ok as you tested !

But my test after from DISABLE_IPVSIX='y' to DISABLE_IPVSIX='n' was not ok

Maybe some adjustments needed for the opposite way?

 

Checking...

 

Without touching anything i check postfix and was running but rpcbind not.

Then i reboot the server and both was working.

Then without adjusting anything i run centminmod and i check again.

Postfix was ok and rpcbind not

It killed rpcbind...

Then i tried to use from DISABLE_IPVSIX='n' (as you left it) the DISABLE_IPVSIX='y' and run centminmod.

Postfix running great. Rpcbind still not working...

Then i reboot to check also this one:

Postfix running great. Rpcbind not.

Then i tried to enable rpcbind manually using:

Code:

systemctl enable rpcbind.socket
systemctl restart rpcbind.socket
systemctl start rpcbind.service

Rpcbind was working again. Then i reboot.

Postfix working great. Rpcbind not.

Then i tried to revert again from DISABLE_IPVSIX='y' to DISABLE_IPVSIX='n' and run centminmod

Postfix working again. Rpcbind not so i started manually again and reboot.

Code:

systemctl enable rpcbind.socket
systemctl restart rpcbind.socket
systemctl start rpcbind.service

Postfix working again. Rpcbind working also !!!

Then without adjusting anything i run centminmod and it killed rpcbind

So it seems for me that Postfix is working now no matter what setting i have and no matter if i change it back or forward !!!! Perfect.

Rpcbind seems to work only when i use DISABLE_IPVSIX='n' and restart the server but it gets killed when i run centminmod...

Can you please re check?

Some tweaking for rpcbind please

 

checking again...

 

Using DISABLE_IPVSIX='n'

Now rpcbind is no get killed by running centminmod !!!
After reboots is ok also

changing to DISABLE_IPVSIX='y'

Rpcbind is ok and running centminmod is not killing it !!!

After reboot rpcbind not working

We are very close

 

I got rpcbind as a dependency from GlusterFS and if rpcbind stop running then nothing works...

That fix will help for sure but my issue was when i used DISABLE_IPVSIX='y' after reboot rpcbind was not started ...

From running state using DISABLE_IPVSIX='y' after reboot was not working...

Don't know if it will fix that also....

 

checking...

 

All working great now !

Now i am checking a clean install as Postfix was failing before....