Discussion:
[Ltsp-discuss] Fat Client Update Curiosity
Adam Fischer
2017-04-28 14:03:59 UTC
Permalink
Hello,

I've been using ltsp with thin clients for a while now, and have
recently been deploying ltsp-pnp with Fat Cleints.

One of the things that I'm failing to grasp is how the software updates
work. My understanding has been that with fat clients, in order for
them to get updated software, I have to update the ltsp client image.
Well, today, I found that one of my ltsp servers has been doing security
updates automatically. So I looked at which packages were updated, and
I decided to check the versions against what was running on the fat
clients. They were the same. I looked, and the ltsp image on the
server is much older than the update. So in my mind, the software on
the fat client should have been an older version, up until I would have run:

ltsp-update-image --cleanup /

So, my question is, how did the software get updated? Does the ltsp
image even get used with ltsp-pnp? It's very confusing, because the
documentation on the Ubuntu Wiki and others indicate that you /have/ to
run the above command to push software updates to the clients.

I'm asking both out of curiosity, and to maybe clean up my procedures,
as well as have a better understanding for future troubleshooting.
--
Thanks!
Adam Fischer
Systems Administrator
KSC Corporate - The Kelly Supply Family of Companies
1004 W Oklahoma Ave, Grand Island, NE 68801
Office 308-382-8764 Ext. 1130
Alkis Georgopoulos
2017-04-28 14:38:43 UTC
Permalink
Add "apt-daily" to the RM_SYSTEM_SERVICES lts.conf directive,
because now apt runs on boot for your clients,
wasting a whole lot of RAM...

This was added in LTSP after Ubuntu 16.04...
Post by Adam Fischer
Hello,
I've been using ltsp with thin clients for a while now, and have
recently been deploying ltsp-pnp with Fat Cleints.
One of the things that I'm failing to grasp is how the software updates
work. My understanding has been that with fat clients, in order for
them to get updated software, I have to update the ltsp client image.
Well, today, I found that one of my ltsp servers has been doing security
updates automatically. So I looked at which packages were updated, and
I decided to check the versions against what was running on the fat
clients. They were the same. I looked, and the ltsp image on the
server is much older than the update. So in my mind, the software on
ltsp-update-image --cleanup /
So, my question is, how did the software get updated? Does the ltsp
image even get used with ltsp-pnp? It's very confusing, because the
documentation on the Ubuntu Wiki and others indicate that you /have/ to
run the above command to push software updates to the clients.
I'm asking both out of curiosity, and to maybe clean up my procedures,
as well as have a better understanding for future troubleshooting.
Adam Fischer
2017-04-28 16:11:48 UTC
Permalink
Oh.

Oh! I get it. The updates are running after every reboot, grabbing the
old image file, and then updating the packages all over again! I can
see it in the apt log!

Thank you very much, Alkis!

Thanks!
Adam Fischer
Systems Administrator
KSC Corporate - The Kelly Supply Family of Companies
1004 W Oklahoma Ave, Grand Island, NE 68801
Office 308-382-8764 Ext. 1130
Post by Alkis Georgopoulos
Add "apt-daily" to the RM_SYSTEM_SERVICES lts.conf directive,
because now apt runs on boot for your clients,
wasting a whole lot of RAM...
This was added in LTSP after Ubuntu 16.04...
Post by Adam Fischer
Hello,
I've been using ltsp with thin clients for a while now, and have
recently been deploying ltsp-pnp with Fat Cleints.
One of the things that I'm failing to grasp is how the software updates
work. My understanding has been that with fat clients, in order for
them to get updated software, I have to update the ltsp client image.
Well, today, I found that one of my ltsp servers has been doing security
updates automatically. So I looked at which packages were updated, and
I decided to check the versions against what was running on the fat
clients. They were the same. I looked, and the ltsp image on the
server is much older than the update. So in my mind, the software on
ltsp-update-image --cleanup /
So, my question is, how did the software get updated? Does the ltsp
image even get used with ltsp-pnp? It's very confusing, because the
documentation on the Ubuntu Wiki and others indicate that you /have/ to
run the above command to push software updates to the clients.
I'm asking both out of curiosity, and to maybe clean up my procedures,
as well as have a better understanding for future troubleshooting.
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