Image not syncing between nodes

[george1421]

@msi I’m not sure if we have the terminology correct here, but you can only capture to a master node in any single storage group. Images only replicate from master nodes to slave nodes.

If you captured an image at a remote branch, that is only possible if the remote branch has a full fog server. Are you expecting that image to replicate somewhere maybe back to HQ?

[msi]

@george1421 yes, that is correct.

@george1421 said in Image not syncing between nodes:

@msi I’m not sure if we have the terminology correct here, but you can only capture to a master node in any single storage group. Images only replicate from master nodes to slave nodes.

I have 7 node storage that are running fog 1.4.4. One master with the same fog version. I have created two other images (Win_10.1703 and Laptop) from a branch that has one of those 7 nodes. And those got transferred to Master fog server but the latest two aren’t transferring there.

If you captured an image at a remote branch, that is only possible if the remote branch has a full fog server. Are you expecting that image to replicate somewhere maybe back to HQ?

Yes, that what I am trying to accomplish.

[george1421]

@msi Where is your master fog server? HQ or the branch?

Did you capture the image created at the branch onto a storage node at a branch? I think I’m missing something when reading your post.

[msi]

@george1421 Yes, I captured it at a branch; which located at NJ. Master is located at CA

[Wayne Workman]

@msi do you have a multi-master fog system setup? Perhaps both nodes are configured as masters in their very own storage groups and you have setup image sharing between the groups?

[msi]

@wayne-workman no, I have only one master and 7 storage node

[Wayne Workman]

@msi said in Image not syncing between nodes:

no, I have only one master and 7 storage node

Captures have always and only gone to Master nodes during capture. So capturing to a non-master is not possible.
Please share with us a screenshot from your web gui -> Storage Management page.

[msi]

@wayne-workman

[Wayne Workman]

@msi Ok, now verify that the image captured properly on the master node. I don’t know your image’s name, but you would check by changing into it’s directory like this:
cd /images/<image name here>/
and then running this command:
ls -laht

[msi]

@wayne-workman the two images doesn’t exist on master. I can see those on NJED45; the place where I created those two images.
Below picture is from NJED45

Below picture is from Master

[Wayne Workman]

@msi Then I would ask you to ensure the IP addresses for your nodes are correct in the Storage Management area. Also check the IP addresses set on the nodes via CLI with this command: ip addr

[msi]

@wayne-workman
NJED45

Master

[Wayne Workman]

@msi Please verify the IPs via CLI too. The command is ip addr

[msi]

@wayne-workman
NJED

Master
It matches.

[Wayne Workman]

@msi What happens when you go to http://10.134.200.230/fog/management using your browser?

[msi]

@wayne-workman Below Message
‘This is a storage node, please do not access the web ui here!’

[Wayne Workman]

@msi Well then something is really messed up here. Going to ask for help from the @developers and @moderators for ideas.

[msi]

@wayne-workman Sure, thanks

[Tom Elliott]

@wayne-workman he’s using location plugin so uploads will go to the hosts location even if the location node is not a master. Replication only happens from master nodes though. Hope this helps.

[george1421]

I guess before we dig into this what I’m (as well as Wayne) is having an issue with understanding is that you are saying something is happening (or not happening) that is not normally possible with FOG.

Let me state the rules according to FOG

1. Only full FOG servers (ones with local databases) can replicate images. The storage nodes do not have the replicator service installed. Any images that were able to make it to a storage node will aways remain there since there is no replicator service to move them.
2. FOG replication is aways a push replication and never a pull replication.
3. Only master nodes in each storage group is authorized to replicate images. If you have one or more full fog servers in a storage group only the master node in that storage group is allowed to replicate (push) images to other nodes in its storage group.
4. Only master nodes in each storage group can capture images. All nodes in each storage group can deploy images.

So what you are saying that your storage node at the branch captured an image and is not replicating to the master mode at HQ. The short answer is you are right, but what you suggest is not possible.