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
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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
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Re: user change under webserver authentication not recognized, posted by Frank Heyroth on Wed Jan 24 14:50:21 2024
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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. |
Logbook architecture and availability, posted by Frank Baptista on Fri Dec 14 15:46:14 2018
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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? |
Re: Logbook architecture and availability, posted by Frank Baptista on Fri Dec 14 17:22:31 2018
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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?
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Re: Logbook architecture and availability, posted by Frank Baptista on Fri Dec 14 20:52:46 2018
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Thank you again -- very much appreciated! 
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?
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Re: Logbook architecture and availability, posted by Frank Baptista on Fri Feb 1 19:20:35 2019 
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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! 
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?
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Re: Logbook architecture and availability, posted by Frank Baptista on Fri Feb 1 21:59:46 2019
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Sorry -- dumb mistake. I moved the "theme" files to the resource folder. Works like a champ...life is good! 
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! 
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?
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Mirror synchronization and file servers, posted by Frank Baptista on Fri Mar 1 19:18:53 2019
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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? 
Thanks,
Frank |
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