How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array

DustinB3403

First go register for a gmail account that will be used for this purpose. If you already have one to use for this purpose, great.

Now that you have that, lets go and make some changes to the system.

cd /etc/ssmtp
cp ssmpt.conf ssmtp.conf.bak
sudo nano ssmtp.conf

In here will be a few things to add

mailhub=smtp.gmail.com:465

Remove the # from UseTL

 UseTLS=YES

Add the following fields without quotes around the gmail name or password.

AuthUser='gmail name'
AuthPass='password'

Save this file and exit out of it.

Now lets go modify our mdadm.conf file.

sudo nano /etc/mdadm.conf

Add the below record, again without quotes around the email account.

MAILADDR '[email protected]'

Save the file and exit

Now to test the email settings.

 sudo mdadm --monitor --scan --test -1

There you have it, MDADM Disk Array monitoring for your Software Array on Xen Server.

mazterjedi

[root@xenserver2 ssmtp]# sudo mdadm --monitor --scan --test -1
sendmail: Cannot open mail:25

Any ideas?

BTW this is not using gmail, using our Cox smarthost with no auth/security

DustinB3403

@mazterjedi said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

[root@xenserver2 ssmtp]# sudo mdadm --monitor --scan --test -1
sendmail: Cannot open mail:25

Any ideas?

Can you post the output of this

 cat /etc/ssmtp.conf

scottalanmiller

@mazterjedi said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

[root@xenserver2 ssmtp]# sudo mdadm --monitor --scan --test -1
sendmail: Cannot open mail:25

Any ideas?

BTW this is not using gmail, using our Cox smarthost with no auth/security

Have you tested to see if your ISP allows port 25 out? Not all do. Also, is Sendmail or Postfix listening locally? Let's start there as that is easy:

netstat -tulpn | grep 25

What is the output?

DustinB3403

@mazterjedi said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

[root@xenserver2 ssmtp]# sudo mdadm --monitor --scan --test -1

BTW this is not using gmail, using our Cox smarthost with no auth/security

Just use gmail, accounts are free, and super simple to setup.

BRRABill

@scottalanmiller said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

@mazterjedi said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

[root@xenserver2 ssmtp]# sudo mdadm --monitor --scan --test -1
sendmail: Cannot open mail:25

Any ideas?

BTW this is not using gmail, using our Cox smarthost with no auth/security

Have you tested to see if your ISP allows port 25 out? Not all do. Also, is Sendmail or Postfix listening locally? Let's start there as that is easy:
netstat -tulpn | grep 25
What is the output?

Most don't, I have found.

mazterjedi

@scottalanmiller said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

netstat -tulpn | grep 25

[root@xenserver2 ssmtp]# netstat -tulpn | grep 25
tcp 0 0 127.0.0.1:5902 0.0.0.0:* LISTEN 5525/qemu-dm-3
[root@xenserver2 ssmtp]#

scottalanmiller

@mazterjedi said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

@scottalanmiller said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

netstat -tulpn | grep 25

[root@xenserver2 ssmtp]# netstat -tulpn | grep 25
tcp 0 0 127.0.0.1:5902 0.0.0.0:* LISTEN 5525/qemu-dm-3
[root@xenserver2 ssmtp]#

You have no email server. That will do it.

yum -y install postfix

mazterjedi

@scottalanmiller
[root@xenserver2 ssmtp]# yum -y install postfix
Loaded plugins: fastestmirror
There are no enabled repos.
Run "yum repolist all" to see the repos you have.
You can enable repos with yum-config-manager --enable <repo>
[root@xenserver2 ssmtp]#

[root@xenserver2 ssmtp]# yum repolist all
Loaded plugins: fastestmirror
repo id repo name status
base/7-2.1511.el7.centos.2.10/x86_64 CentOS-7-2.1511.el7.centos.2 disabled
base-debuginfo/x86_64 CentOS-7 - Debuginfo disabled
base-source/7-2.1511.el7.centos.2.10 CentOS-7-2.1511.el7.centos.2 disabled
centosplus/7-2.1511.el7.centos.2.10/x86_64 CentOS-7-2.1511.el7.centos.2 disabled
centosplus-source/7-2.1511.el7.centos.2.10 CentOS-7-2.1511.el7.centos.2 disabled
extras/7-2.1511.el7.centos.2.10/x86_64 CentOS-7-2.1511.el7.centos.2 disabled
extras-source/7-2.1511.el7.centos.2.10 CentOS-7-2.1511.el7.centos.2 disabled
updates/7-2.1511.el7.centos.2.10/x86_64 CentOS-7-2.1511.el7.centos.2 disabled
updates-source/7-2.1511.el7.centos.2.10 CentOS-7-2.1511.el7.centos.2 disabled
repolist: 0

mazterjedi

Unfortunately, I have no clue what this means.

BRRABill

Ah, the ever present "no repos" in XS. Nice to see you again.

Boy does XS like being an appliance, or what?

scottalanmiller

Do this...

yum-config-manager --enable base
yum-config-manager --enable extras
yum-config-manager --enable updates
yum-config-manager --enable centosplus

Then install again.

mazterjedi

@scottalanmiller said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

yum-config-manager --enable base

[root@xenserver2 ssmtp]# yum-config-manager --enable base
-bash: yum-config-manager: command not found
[root@xenserver2 ssmtp]#

Does the ssmtp at the end of the prompt make a difference? Shouldn't it just be [root@xenserver2] ?

scottalanmiller

@mazterjedi said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

@scottalanmiller said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

yum-config-manager --enable base

[root@xenserver2 ssmtp]# yum-config-manager --enable base
-bash: yum-config-manager: command not found
[root@xenserver2 ssmtp]#

Does the ssmtp at the end of the prompt make a difference? Shouldn't it just be [root@xenserver2] ?

That ssmtp at the end of the prompt is just showing you your folder location, no big deal.

scottalanmiller

Does Xen not have yum-config-manager installed these days? What a pain.

Anyone have the commands handy for enabling the repos manually?

BRRABill

@scottalanmiller said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

Does Xen not have yum-config-manager installed these days? What a pain.

Anyone have the commands handy for enabling the repos manually?

Didn't we give up on this a while back? LOL.

scottalanmiller

@BRRABill said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

@scottalanmiller said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

Does Xen not have yum-config-manager installed these days? What a pain.

Anyone have the commands handy for enabling the repos manually?

Didn't we give up on this a while back? LOL.

No, that we got working.

BRRABill

@scottalanmiller said

No, that we got working.

You sure about that?

scottalanmiller

@BRRABill said in How to configure GMail SMTP on XenServer 6.5 to monitor and alert about your MDADM Array:

@scottalanmiller said

No, that we got working.

You sure about that?

We will call it "moderately sure."

BRRABill

@scottalanmiller said

We will call it "moderately sure."

You just keep thinking that.

I seem to remember the final words before giving up were
"Why do you need this app installed anyway"
And we found another option.

But I could be wrong.