Demo Discussion
Forum Config Examples Contributions Vulnerabilities
  Discussion forum about ELOG, Page 585 of 808  Not logged in ELOG logo
    icon2.gif   Re: How to not expose elog port when running under a reverse proxy, posted by Frank Heyroth on Mon Jan 22 20:50:50 2024 

Hi,
as I understand right you can do this in the elogd.cfg via
Interface = 127.0.0.1
port = 8080

however than this can be changed by any user how has global admin rights in elog.

So I changed the line in the elogd.service startscript
ExecStart=/usr/local/sbin/elogd -D -p 8080 -n 127.0.0.1  -c /usr/local/elog/elogd.cfg

I hope this has the priority (not tested).

 

Nicola wrote:

I am running elog under Apache as explained in the administrator's guide. Everything works fine, butmy IT service complains about the elog port being publicly exposed, so I have to fix this. As far as I understand when running under a reverse proxy there's no need for the port to be publiuclyexposed, but I cannot find how to configure the elog server to expose it only locally

 

    icon2.gif   Re: user change under webserver authentication not recognized, posted by Frank Heyroth on Wed Jan 24 14:50:21 2024 

I found the reason of the bug:
In line 27441 of elogd.cxx the http_user is overwritten by the user saved in the sid_ array as a sideeffect of the sid_check function:
sid_check(getparam("sid"), http_user)

It can solved by changing elogd.cxx @ line 27441

27441c27441,27446
<          if (!sid_check(getparam("sid"), http_user)) { /*  if we don't have a sid yet, set it */
---
>          i=sid_check(getparam("sid"), thumb_name);
>          if (i && strcmp(http_user,thumb_name)!=0) {  /* user changed */
>             sid_remove(getparam("sid"));
>             i=FALSE;
>          }
>          if (!i) { /*  if we don't have a sid yet, set it */

Remark: I have used the variables i & thumb_name of the function in a local context.

icon5.gif   Logbook architecture and availability, posted by Frank Baptista on Fri Dec 14 15:46:14 2018 

I have a setting which makes ELOG a perfect solution, but there's a situation that I'm struggling to get my head around. We have 3 separate laboratories, each one containing a number of temperature chambers, which run almost constantly over a number of shifts. Each temperature chamber has it's own logbook (laptop). So far, pretty simple.
My dilemma is, our network goes down for maintenance/updates (more often than I'd like), but our operation cannot afford to stop during network interruptions.
With that said, I thought about whether I could run a "local" logbook on each laptop/chamber, and somehow mirror the local logbook to the main ELOG server.
Perhaps I'm over-thinking this...do you have any recommendations?

    icon2.gif   Re: Logbook architecture and availability, posted by Frank Baptista on Fri Dec 14 17:22:31 2018 

Thanks Stephan! I guess I was making it harder than it is.  I'm still a little fuzzy -- in this instance, am I correct in saying that each laptop would be considered a "master", and the remote (network) server considered the "slave"?  Also, I'm not sure quite sure -- which server should be assigned responsibility for performing periodic synchronization between the laptop and the central elog server?

Thanks again for all you do -- Happy Holidays!

Frank

Stefan Ritt wrote:

Sure that's easy. Install elog on each laptop separately, so they run without network. Then, set up a central elog server, and use "mirroring" as explained in the documentation at https://elog.psi.ch/elog/config.html#mirroring

So when ever the entwork comes back, you execute a manual mirror operation, and your new entries will be pushed to the central elog server.

Best,
Stefan

Frank Baptista wrote:

I have a setting which makes ELOG a perfect solution, but there's a situation that I'm struggling to get my head around. We have 3 separate laboratories, each one containing a number of temperature chambers, which run almost constantly over a number of shifts. Each temperature chamber has it's own logbook (laptop). So far, pretty simple.
My dilemma is, our network goes down for maintenance/updates (more often than I'd like), but our operation cannot afford to stop during network interruptions.
With that said, I thought about whether I could run a "local" logbook on each laptop/chamber, and somehow mirror the local logbook to the main ELOG server.
Perhaps I'm over-thinking this...do you have any recommendations?

 

 

    icon2.gif   Re: Logbook architecture and availability, posted by Frank Baptista on Fri Dec 14 20:52:46 2018 

Thank you again -- very much appreciated! smiley

Stefan Ritt wrote:

I would call the laptops the "master" being responsible for pushing data to the central server which you can call "slave"

 

Stefan

Frank Baptista wrote:

Thanks Stephan! I guess I was making it harder than it is.  I'm still a little fuzzy -- in this instance, am I correct in saying that each laptop would be considered a "master", and the remote (network) server considered the "slave"?  Also, I'm not sure quite sure -- which server should be assigned responsibility for performing periodic synchronization between the laptop and the central elog server?

Thanks again for all you do -- Happy Holidays!

Frank

Stefan Ritt wrote:

Sure that's easy. Install elog on each laptop separately, so they run without network. Then, set up a central elog server, and use "mirroring" as explained in the documentation at https://elog.psi.ch/elog/config.html#mirroring

So when ever the entwork comes back, you execute a manual mirror operation, and your new entries will be pushed to the central elog server.

Best,
Stefan

Frank Baptista wrote:

I have a setting which makes ELOG a perfect solution, but there's a situation that I'm struggling to get my head around. We have 3 separate laboratories, each one containing a number of temperature chambers, which run almost constantly over a number of shifts. Each temperature chamber has it's own logbook (laptop). So far, pretty simple.
My dilemma is, our network goes down for maintenance/updates (more often than I'd like), but our operation cannot afford to stop during network interruptions.
With that said, I thought about whether I could run a "local" logbook on each laptop/chamber, and somehow mirror the local logbook to the main ELOG server.
Perhaps I'm over-thinking this...do you have any recommendations?

 

 

 

 

    icon2.gif   Re: Logbook architecture and availability, posted by Frank Baptista on Fri Feb 1 19:20:35 2019 ELOG_Screen_Capture_-_Missing_formatting.PNGelogd.cfg

I've got things working - sort of.  Ran into one strange problem that has me scratching my head.  I have two different laptops, each running a local instance of their own logbook.  Both are functional, but for some strange reason, one looks great, and the other is missing its graphic format.  I've attached a screen capture of that logbook, and a copy of the config file.  Do you see something that I've done wrong?

Thanks,

Frank

Frank Baptista wrote:

Thank you again -- very much appreciated! smiley

Stefan Ritt wrote:

I would call the laptops the "master" being responsible for pushing data to the central server which you can call "slave"

 

Stefan

Frank Baptista wrote:

Thanks Stephan! I guess I was making it harder than it is.  I'm still a little fuzzy -- in this instance, am I correct in saying that each laptop would be considered a "master", and the remote (network) server considered the "slave"?  Also, I'm not sure quite sure -- which server should be assigned responsibility for performing periodic synchronization between the laptop and the central elog server?

Thanks again for all you do -- Happy Holidays!

Frank

Stefan Ritt wrote:

Sure that's easy. Install elog on each laptop separately, so they run without network. Then, set up a central elog server, and use "mirroring" as explained in the documentation at https://elog.psi.ch/elog/config.html#mirroring

So when ever the entwork comes back, you execute a manual mirror operation, and your new entries will be pushed to the central elog server.

Best,
Stefan

Frank Baptista wrote:

I have a setting which makes ELOG a perfect solution, but there's a situation that I'm struggling to get my head around. We have 3 separate laboratories, each one containing a number of temperature chambers, which run almost constantly over a number of shifts. Each temperature chamber has it's own logbook (laptop). So far, pretty simple.
My dilemma is, our network goes down for maintenance/updates (more often than I'd like), but our operation cannot afford to stop during network interruptions.
With that said, I thought about whether I could run a "local" logbook on each laptop/chamber, and somehow mirror the local logbook to the main ELOG server.
Perhaps I'm over-thinking this...do you have any recommendations?

 

 

 

 

 

    icon2.gif   Re: Logbook architecture and availability, posted by Frank Baptista on Fri Feb 1 21:59:46 2019 

Sorry -- dumb mistake.  I moved the "theme" files to the resource folder.  Works like a champ...life is good! smiley

Frank Baptista wrote:

I've got things working - sort of.  Ran into one strange problem that has me scratching my head.  I have two different laptops, each running a local instance of their own logbook.  Both are functional, but for some strange reason, one looks great, and the other is missing its graphic format.  I've attached a screen capture of that logbook, and a copy of the config file.  Do you see something that I've done wrong?

Thanks,

Frank

Frank Baptista wrote:

Thank you again -- very much appreciated! smiley

Stefan Ritt wrote:

I would call the laptops the "master" being responsible for pushing data to the central server which you can call "slave"

 

Stefan

Frank Baptista wrote:

Thanks Stephan! I guess I was making it harder than it is.  I'm still a little fuzzy -- in this instance, am I correct in saying that each laptop would be considered a "master", and the remote (network) server considered the "slave"?  Also, I'm not sure quite sure -- which server should be assigned responsibility for performing periodic synchronization between the laptop and the central elog server?

Thanks again for all you do -- Happy Holidays!

Frank

Stefan Ritt wrote:

Sure that's easy. Install elog on each laptop separately, so they run without network. Then, set up a central elog server, and use "mirroring" as explained in the documentation at https://elog.psi.ch/elog/config.html#mirroring

So when ever the entwork comes back, you execute a manual mirror operation, and your new entries will be pushed to the central elog server.

Best,
Stefan

Frank Baptista wrote:

I have a setting which makes ELOG a perfect solution, but there's a situation that I'm struggling to get my head around. We have 3 separate laboratories, each one containing a number of temperature chambers, which run almost constantly over a number of shifts. Each temperature chamber has it's own logbook (laptop). So far, pretty simple.
My dilemma is, our network goes down for maintenance/updates (more often than I'd like), but our operation cannot afford to stop during network interruptions.
With that said, I thought about whether I could run a "local" logbook on each laptop/chamber, and somehow mirror the local logbook to the main ELOG server.
Perhaps I'm over-thinking this...do you have any recommendations?

 

 

 

 

 

 

icon5.gif   Mirror synchronization and file servers, posted by Frank Baptista on Fri Mar 1 19:18:53 2019 

We have a number of temperature chambers – each has its own laptop running a local ELOG server, with unique logbook for each.  Using the mirror feature, these individual logbooks periodically synchronize to a single remote desktop server, which has a copy of each of the logbooks.  All of that works great, as long as each of the ELOG servers are storing the logbook(s) to their respective local hard drive.

I wanted the remote server to store its copy of the logbooks on the network file server.  I changed the global options of the elogd.cfg file, adding the following:

               Logbook dir = S:\SHARED\LOGBOOKS

That change worked fine on the remote desktop server – new logbook entries were now being stored on the network file server.

Unfortunately, I lost the ability to sync from the individual logbooks to the remote desktop server.  During synchronization, I now get the following error message: “Error sending local entry: Error transmitting message". 

Has anyone run into this? Does this make sense? Am I missing something? Is there a workaround? Is there a wrong time to drink beer? wink

Thanks,

Frank

ELOG V3.1.5-3fb85fa6