Best posts made by momurda

@bigbear Yes or Alt + f2, f3, all the way to f8 I think should also switch to different console. One of them should be a # prompt

You also might want to check SATA mode for your SATA ports in bios/uefi.

Works here. After i entered Service Tag:

Edit: I am not signed into my account when i did this, just opened the site and entered tag.

Dont you need to be an administrator to change the time? Here i get a uac prompt if i try to change.

Did the computers sync correctly before this change?

Or you can use Ctrl Alt F2 to get a # prompt and do it through cli

I have been setting up snmp monitoring for the every device at work. I am mostly done with the setup and testing, just need to roll it out.
One thing that really needs addressing in all of these products(observium, nagios, sw, every other one) is network adapters. Specifically the fact that all these products think my desktop, and all other desktops have a couple dozen network adapters each. where is this information being gleaned from? Why cant i see 25 network adapters in my desktop?
Currently listed for my desktop


Just ridiculous.
This desktop has exactly 2 physical nics, not 25.
Here is a view of all adapters from control panel

4 listed here, because i have a vpn client and virtual box installed along with 2 physical nics.

Does anybody actually know how to set this up for a Linux box?
In Windows, I install the service. Then I open the SNMP service, type in a read only name and the allowed hosts, the ip/dns of observium/opennms. Then in observium/opennms I type in the name of the Linux box and the read only name. That is it. snmp data flows, charts are drawn, alerts can be sent.

In Linux, I install snmp, then goto /etc/snmp/ and see there is 3 files here, snmp.conf, snmpd.conf, snmptrap.conf.
Then I goto net-snmp.org and read about it.
http://www.net-snmp.org/wiki/index.php/Com2sec The !@#$ is this, com2sec?
Then they give this example conf file. Ok but using this snmp.conf doesn't actually let me add the Linux box to my observium/opennms.

# Map 'disks' community to the 'disksOnly' user
# Map 'everything' community to the 'allThings' user
#         sec.name   source    community
com2sec   disksOnly  default   disks
com2sec   allThings  default   everything
 
# Map 'disksOnly' to 'diskGroup' for SNMP Version 2c
# Map 'allThings' to 'allGroup' for SNMP Version 2c
#                sec.model sec.name
group diskGroup   v2c      disksOnly
group allGroup    v2c      allThings
 
# Define 'diskView', which includes everything under .1.3.6.1.2.1.25.2.3.1
# Define 'allView', which includes everything under .1 (which is everything)
#                  incl/excl   subtree
view    diskView   included    .1.3.6.1.2.1.25.2.3
view    allView    included    .1
 
# Give 'diskGroup' read access to objects in the view 'diskView'
# Give 'allGroup' read access to objects in the view 'allView'
#         group     context   model   level    prefix  read       write   notify
access    diskGroup   ""      any     noauth   exact   diskView   none    none
access    allGroup    ""      any     noauth   exact   allView    none    none

What is source? Is that where I put in the name or ip of my observium/opennms?
I know view acces group, wtf is com2sec. How do I get a Linux box to connect to an nms like opennms/observium?

Ive got this sorted now. The file i was editing was snmp.conf
This was wrong, as the file setting up the snmp listening daemon, what you are going to query from your nms, is snmpd.conf.

agentaddress udp:161
#agentaddress udp6:161
#       sec.name        source   community
com2sec readonly        default  secretsecret
#
#                         sec.model sec.name
group   rogroup           v2c       readonly
#
#
#       name   incl/excl   subtree
view    all    included    .1
#
#
#       group    context   model   level    prefix  read   write   notify
access  rogroup    ""      any     noauth   exact   all    none    none

#other info, location
syslocation Seattle WA
syscontact sysadmin <[email protected]>

I looked at what engineer gave me and made some modifications to what i was doing.
This is a basic config that you can put in /etc/snmp/snmpd.conf and have it work with an NMS.
There is a ton more stuff like Version 3 and some other things you can do, but for my purpose this is just fine.
There are some configurations that are pages long, but this one just gives your nms the ability to query anything in the standard .1 subtree, at least i think that is what is happening.

Have a LAMP server on vultr. It needs to be able to send mail to our office.
Never setup postfix before.
is it
sudo apt install postfix
Choose Internet Mail
Choose myworkdomain.com when it asks
sudo ufw allow postfix
sudo systemctl restart ufw
Add the ip to my spf.
Then something like php mail() will work?

Not once in 10 years have i had to change this setting for an Outlook user.
Not even people with 15GB mailboxes who have never erased an email from Inbox or Sent folder.