I am still struggling to get ELOG running behind a load balancer and hope to get some advice here. As already reported in https://elog.psi.ch/elogs/Forum/69542 I observed an infinite loop of redirects when prompted to log in and using a non-empty password file. Without a password, the service worked as expected. This was with version 3.1.3.

With the new version 3.1.4-3, I get another error: "Invalid Content-Length in header" when I click on "submit" of a new post. Viewing the logbooks works fine. The instance is currently live and running here: https://elog.test.km3net.de but I might change it anytime due to debugging etc.

This is a kind of difficult thing to debug (I spent the whole day and no progress). The only thing I've found was this post: https://techcommunity.microsoft.com/t5/iis-support-blog/invalid-content-length/ba-p/3038724 where it seems that some responses are not RFC conform and were rejected in the load-balancer.

The load balancer I use is HAProxy, the same as in my old setup where I got the infinite redirects, and I can't find any setting which would work. To my understanding, the most basic setup should work just fine. The SSL termination is on the load-balancer side so ELOG doesn't even have to know anything about it. The configuration is below. I am running a single instance, so there is not even replication with session keep-alive via cookies or anything fancy.

I also want to mention that I am runnin around 30 different services behind the load balancer and none of them are having any issues with the SSL termination or the load-balancing itself, that's why assume that something in ELOG is either non-conform or buggy.

Any thoughts? I'd really like to use the same infrastructure for the ELOG service as for every other service (automatic certificate renewal via letsencrypt, load-balancing, easy movement to other nodes, SSL termination etc.), to minimise the complexity of our Docker Swarm system.

backend be_elog.km3net.de
    mode http
    server-template km3net-elog- 1 km3net-elog_elog:8080 check resolvers docker init-addr libc,none

Btw. I am running ELOG with -v but I don't see any error whatsoever in the logs:

km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | GET /demo/ HTTP/1.1
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Received unknown cookie "ios_specific_templates_id"
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Received unknown cookie "rl_anonymous_id"
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Received unknown cookie "rl_group_id"
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Received unknown cookie "rl_group_trait"
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Received unknown cookie "rl_trait"
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Received unknown cookie "rl_user_id"
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Received unknown cookie "logged_out_marketing_header_id"
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Returned 3437 bytes
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | GET / HTTP/1.1
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Returned 120 bytes
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | GET /demo/ HTTP/1.1
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Returned 3518 bytes
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | GET / HTTP/1.1
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Returned 120 bytes
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | GET /demo/ HTTP/1.1
km3net-elog_elog.1.fm8i1eia9l9t@ecap-s021    | Returned 3518 bytes

I put the ELOG service behind an Apache reverse proxy which is now sitting behind the HAProxy. It works like this, but it's just a workaround. I am pretty sure that ELOG has problems to communicate with HAProxy correctly and it seems that Apache is more forgiving. So that the chain HAProxy -> Apache -> ELOG and vice versa is working.

If anyone manages to figure out what's wrong, I am happy to get rid of the extra reverse proxy layer!

I have the same problem. I found a temporary solution: https://elog.psi.ch/elogs/Forum/69807

I changed elog to interprete the content-length header case in-sensitive and committed the change. Can you try again?

Stefan

I'm trying to run elog behind haproxy, but get the error "Invalid Content-Length in header" on posting.

As stated in the manual, haproxy rewrites all headers to lower case.

elogd parses the content-length header case sensitive which is against the HTTP RFC. This might also apply to other headers that get parsed.

For now I'm using the workaround from the manual:

global
  h1-case-adjust content-length Content-Length
  h1-case-adjust content-type Content-Type

backend elog
  option h1-case-adjust-bogus-server
  server elog 127.0.0.1:8080

But as the manual states, this should not be  used as a permanent solution.

I changed elog to interprete the content-length header case in-sensitive and committed the change. Can you try again?

Stefan

Hi, I'm not sure if this is an Elog bug, something wrong in my configuration/database.

When I create a new article on Elog it always shows an attachment from one of the first entries ever made to this log book made. This is in addition to any attachments which were actually added during article creation.

I just made an example entry to demonstrate. First attachment here shows how the entry looks in the GUI, it has an attached text file called "jail.local", 2nd attachment is how that entry looks in the database file - no attachment.

Does anyone have any idea what's happening?

This bug has been fixed in meantime, please upgrade to the current version.

Thanks very much for the quick response Stefan. My apologies, I thought I was on the latest version or I would have upgraded before contacting you.
The file I installed from was the rpm "elog-3.1.5-20240226.el9.x86_64.rpm" which still seems to be the latest version on the Dropbox downloads page.
Do I need to use the tar distribution to get the latest?

I updated the EL9 rpms, so please try again.

Great, thank you again. I have now installed the latest and the problem appears to be gone.

Hi, I'm not sure if this is an Elog bug, something wrong in my configuration/database.

When I create a new article on Elog it always shows an attachment from one of the first entries ever made to this log book made. This is in addition to any attachments which were actually added during article creation.

I just made an example entry to demonstrate. First attachment here shows how the entry looks in the GUI, it has an attached text file called "jail.local", 2nd attachment is how that entry looks in the database file - no attachment.

Does anyone have any idea what's happening?

I was wondering if anyone would be able to assist me in getting the ImageMagick/figure scaling working on an elog running under windows 11 (Microsoft Windows Version 22H2 (OS Build 22621.3880)).   I've followed the installation instructions and checked that $PATH contains the directory for both ImageMagick and GSS.  In a 'command prompt' window, when I execute "identify -version" from any directory I get the response:

Version: ImageMagick 7.1.1-35 Q16-HDRI x64 d775d2a:20240714 https://imagemagick.org
Copyright: (C) 1999 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Channel-masks(64-bit) Cipher DPC HDRI Modules OpenCL OpenMP(2.0)
Delegates (built-in): bzlib cairo flif freetype gslib heic jng jp2 jpeg jxl lcms lqr lzma openexr pangocairo png ps raqm raw rsvg tiff webp xml zip zlib
Compiler: Visual Studio 2022 (194033811)

which I believe is correct.  I've looked through the source-code for the elog and I believe that upon initialisation elogd is looking for a response containing "ImageMagick" somewhere in the response [image_magick_exist = (strstr(str, "ImageMagick") != NULL);] so I'm not sure I understand why this isn't being satisfied.  When I run elogd I get the statement "ImageMagick NOT detected. Image scaling will not work.".

I have the feeling that this is some security restriction in windows 11, so was wondering if anyone had seen this problem before and knew of a solution.

Many Thanks

I've managed to get it working and the problem wasn't what I thought it was.  It turns out that ImageMagick v7 doesn't have a "convert.exe" program in the windows version due to some conflict with a disk conversion utility.  The "convert.exe" has been replaced with a "magick.exe" and so I made a CONVERT.BAT script within the elog folder with content "magick %*".  This workaround appears to have solved the problem.

Version: ImageMagick 7.1.1-35 Q16-HDRI x64 d775d2a:20240714 https://imagemagick.org
Copyright: (C) 1999 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Channel-masks(64-bit) Cipher DPC HDRI Modules OpenCL OpenMP(2.0)
Delegates (built-in): bzlib cairo flif freetype gslib heic jng jp2 jpeg jxl lcms lqr lzma openexr pangocairo png ps raqm raw rsvg tiff webp xml zip zlib
Compiler: Visual Studio 2022 (194033811)

Hello!

We're setting up ELOG on OpenShift. ELOG is installed on a Alma Linux 9 image. The container and the elog demo works fine executing the docker image locally.

When deployed on OpenShift, we get a weird response, that results in a 502 Bad Gateway. The broken response looks like:
 

# curl -v -H 'X-Forwarded-User: enrico.gamberini@cern.ch' https://psi-elog-container2-elisa-epdtdi.app.cern.ch/demo/

<html>redir</html>
HTTP/1.1 200 Document follows
HTTP/1.1 200 Document follows
Server: ELOG HTTP 3.1.5-23df00d
Content-Type: text/html;charset=ISO-8859-1
Set-Cookie: elmode=Summary; path=/demo; expires=Friday, 07-Dec-35 06:30:26 GMT;
Pragma: no-cache
Cache-control: private, max-age=0, no-cache, no-store
 

Notice the HTML tag before the HTTP header, as well the duplicate HTTP header.

I understand that it might be difficult to reproduce, but any input would be very welcome!

Thanks!

Best,
Enrico

Sorry for posting again but something else came up.

Actually, building from source (elog-3.1.5-1.tar.gz) works just fine on OpenShift too.

The problem described below only happens when installing the packaged binary elog-3.1.5-20240226.el9.x86_64.rpm.

Best,
Enrico

Hey Enrico,

Do you activate also all options with your build ? (pam/ldap/kb5/ssl)

Can you compare ldd command results on elogd binaries builded by yourself and the one from RPM ?

$ ldd /path/to/elogd

Also, size of both elogd files.

Regards

Hi Laurent,

Thanks, good point! I'm building a vanilla version (no extra options enabled as I'm using Webserver authentication).

3.15 RPM:

-rwxr-xr-x. 1 elog elog 1574768 Feb 26 17:29 elogd

bash-5.1$ ldd /usr/local/sbin/elogd 
    linux-vdso.so.1 (0x00007fff215f7000)
    libssl.so.3 => /lib64/libssl.so.3 (0x00007feff74c6000)
    libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007feff73eb000)
    libldap.so.2 => /lib64/libldap.so.2 (0x00007feff7384000)
    liblber.so.2 => /lib64/liblber.so.2 (0x00007feff7372000)
    libpam.so.0 => /lib64/libpam.so.0 (0x00007feff7360000)
    libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007feff7139000)
    libm.so.6 => /lib64/libm.so.6 (0x00007feff705c000)
    libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007feff7041000)
    libc.so.6 => /lib64/libc.so.6 (0x00007feff6e38000)
    libcrypto.so.3 => /lib64/libcrypto.so.3 (0x00007feff6a07000)
    libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007feff69ee000)
    libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007feff69e7000)
    libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007feff69d4000)
    libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007feff69cd000)
    libresolv.so.2 => /lib64/libresolv.so.2 (0x00007feff69b9000)
    libevent-2.1.so.7 => /lib64/libevent-2.1.so.7 (0x00007feff6960000)
    libsasl2.so.3 => /lib64/libsasl2.so.3 (0x00007feff6940000)
    libaudit.so.1 => /lib64/libaudit.so.1 (0x00007feff6912000)
    libeconf.so.0 => /lib64/libeconf.so.0 (0x00007feff6905000)
    /lib64/ld-linux-x86-64.so.2 (0x00007feff7572000)
    libz.so.1 => /lib64/libz.so.1 (0x00007feff68eb000)
    libselinux.so.1 => /lib64/libselinux.so.1 (0x00007feff68be000)
    libcrypt.so.2 => /lib64/libcrypt.so.2 (0x00007feff6884000)
    libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007feff682d000)
    libcap-ng.so.0 => /lib64/libcap-ng.so.0 (0x00007feff6822000)
    libpcre2-8.so.0 => /lib64/libpcre2-8.so.0 (0x00007feff6786000)
    
3.15 source vanilla build:

-rwxr-xr-x. 1 root root 1503896 Jul 15 09:31 elogd

bash-5.1$ ldd elogd
    linux-vdso.so.1 (0x00007fff60bbf000)
    libssl.so.3 => /lib64/libssl.so.3 (0x00007f8f83e44000)
    libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f8f83c1b000)
    libm.so.6 => /lib64/libm.so.6 (0x00007f8f83b40000)
    libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f8f83b25000)
    libc.so.6 => /lib64/libc.so.6 (0x00007f8f8391c000)
    libcrypto.so.3 => /lib64/libcrypto.so.3 (0x00007f8f834e9000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f8f83ef0000)
    libz.so.1 => /lib64/libz.so.1 (0x00007f8f834cd000)

Best,
Enrico

Enrico,

When using RPM in OpenShift, I guess all the RPM dependencies are correctly installed.

FYI, I met a problem with elogd docker built with alpine Linux image and running on Synology NAS (x86_64). The ImageMagick dependencies libs provided by alpine for X86_64 are optimized for better CPU than mine with AVX2 (or something like that), and elogd failed to save a log with any enclosure (core exit, bad instruction), as some thumbnails are generated while saving.

As I didn't find any easy workaround w/o rebuilding all IM libs, so I switch to Debian images more conservative in CPU optimization, but bigger :-( before to switch to minideb that's run fine in my case.

It's not easy to debug in container w/o making one specially for that, so you should try to build a docker based on alma9 image, compiling elogd from sources (you can follow https://github.com/loll31/elog-ldap for the process).

Good luck

NB : The ldd result from my minideb Docker :

root@9ac6063e87bf:/# ldd -v /usr/local/sbin/elogd                                                                                                        

        linux-vdso.so.1 (0x00007ffd0e794000)                                                                                                             

        libssl.so.3 => /lib/x86_64-linux-gnu/libssl.so.3 (0x00007fc00ac35000)                                                                            

        libldap-2.5.so.0 => /lib/x86_64-linux-gnu/libldap-2.5.so.0 (0x00007fc00abd6000)                                                                  

        liblber-2.5.so.0 => /lib/x86_64-linux-gnu/liblber-2.5.so.0 (0x00007fc00abc6000)                                                                  

        libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fc00a9ac000)                                                                      

        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fc00a98c000)                                                                        

        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fc00a7a9000)                                                                                

        libcrypto.so.3 => /lib/x86_64-linux-gnu/libcrypto.so.3 (0x00007fc00a328000)                                                                      

        libsasl2.so.2 => /lib/x86_64-linux-gnu/libsasl2.so.2 (0x00007fc00a30b000)                                                                        

        libgnutls.so.30 => /lib/x86_64-linux-gnu/libgnutls.so.30 (0x00007fc00a0ef000)                                                                    

        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fc00a010000)                                                                                

        /lib64/ld-linux-x86-64.so.2 (0x00007fc00f959000)                                                                                                 

        libp11-kit.so.0 => /lib/x86_64-linux-gnu/libp11-kit.so.0 (0x00007fc009eda000)                                                                    

        libidn2.so.0 => /lib/x86_64-linux-gnu/libidn2.so.0 (0x00007fc009ea9000)                                                                          

        libunistring.so.2 => /lib/x86_64-linux-gnu/libunistring.so.2 (0x00007fc009cf3000)                                                                

        libtasn1.so.6 => /lib/x86_64-linux-gnu/libtasn1.so.6 (0x00007fc009cde000)                                                                        

        libnettle.so.8 => /lib/x86_64-linux-gnu/libnettle.so.8 (0x00007fc009c90000)                                                                      

        libhogweed.so.6 => /lib/x86_64-linux-gnu/libhogweed.so.6 (0x00007fc009c47000)                                                                    

        libgmp.so.10 => /lib/x86_64-linux-gnu/libgmp.so.10 (0x00007fc009bc4000)                                                                          

        libffi.so.8 => /lib/x86_64-linux-gnu/libffi.so.8 (0x00007fc009bb8000)                                  

Also, you have the option to rebuild RPM from SRPMS or SOURCES via ELOG buildrpm script.

You will need to install rpmbuild tools...

Options (ldap, kb5, etc) can be set from options or by editing defaults.

Hi,

is it possible to change the name ELOG from all HTML titles.

E.g. find/search. If you click on find/search the browser/html tag/title is 'ELOG search'. Is it possible to change this to 'xxx search' and how.

You can change the title for the standard page with 'Page title = ...' and for the list page with 'List Page title = ...', but unfortunately not for all pages (such as the search mask).

Stefan

Hey eloggers,

I am setting up an ELOG to log the cleanroom fabrication in our startup (Luxtelligence SA). The fabrication is structured in different process steps that are performed by several wafers at the same time (each wafer as an ID).

I am looking for an possibility to put a list of several integers as one of the attributes.

Here an example:

Does something like this exsist?

Thanks in advance for your help.

Hi John,

thanks for the info =). Do you known whether there is an example of how to use the list-boxes attributes?

Best,

Nick

I think what you want already exists, for example, when I reply to this message, there is this "Category" selection box with predefined answers 
"Info", "Bug report", etc. For your case, replace "Category" with "Wafer type ID", replace "Info" with "1", "Bug report" with "2", etc. You numeric 
values will be strings containing numbers "1", "2", etc. That works for you? K.O.

Hey, 

thanks for your answer. I completely get your point. However, I think my question as not precise enough.

I would like to have a numeric input, but many at the same time. When I make a new post, I would like to have an attribute 'wafer_IDs' that specifies the list of wafers this process has been performed with. So for a single post I would like to have a list like this:

wafer_IDs = numeric value, numeric value, numeric value, extendable

Note: I am not referring here to the option. The numeric values are freely chooses numbers, the only this that varies from post to post is the number of numeric values put.

Let me make an example (If the attribute were a string this would be the equivalent):

1st post: A process that was run with 3 wafers (ID: 1000, ID: 1001 and ID: 1002):
wafer IDs = 1000, 1001, 1002

2nd post: A process that is run with 2 wafers (ID: 1000 and ID: 1002):
wafer IDs = 1000, 1002

The string solves the issue, but is not as nice as having directly a list of integers.

Thanks for your help!

Best,

Nick

Hey eloggers,

does anyone have an answer to this question?

Thanks for the help.

Best,


Nick


> Hey, 
> 
> thanks for your answer. I completely get your point. However, I think my question as not precise enough.
> 
> I would like to have a numeric input, but many at the same time. When I make a new post, I would like to have an attribute 'wafer_IDs' that specifies the list of wafers this 
process has been performed with. So for a single post I would like to have a list like this:
> 
> wafer_IDs = numeric value, numeric value, numeric value, extendable
> 
> Note: I am not referring here to the option. The numeric values are freely chooses numbers, the only this that varies from post to post is the number of numeric values put.
> 
> Let me make an example (If the attribute were a string this would be the equivalent):
> 
> 1st post: A process that was run with 3 wafers (ID: 1000, ID: 1001 and ID: 1002):
> wafer IDs = 1000, 1001, 1002
> 
> 2nd post: A process that is run with 2 wafers (ID: 1000 and ID: 1002):
> wafer IDs = 1000, 1002
> 
> The string solves the issue, but is not as nice as having directly a list of integers.
> 
> Thanks for your help!
> 
> Best,
> 
> Nick

I have replied to this entry, because, for some reason I don't understand, if I reply to your latest entry, I am
automatically logged out.  I tried this multiple times, and also on many other entries and had no issues other than
entry 69787 - any reason for this, Stefan?

Anyway, what about MOptions? That appears to do what your example, and needs two lines in elog.cfg file:

Moptions WaferID = 1001, 1002, 1003, 1004, 1005
Extendable Options = WaferID

I've done a couple of quick tests on a test logbook I keep for such experimentation, and it appears to do all 
you have asked of it.  I added a new option 1006.  However, I found that one has to add that new one on its own, 
let the entry become proper, and then edit the entry to add the other, existing, values.   If you tick entries and 
also add a new one, then your new entry is all those listed on their own, that is you would get and new entry
in the config file such as "1002 | 1004 | 1006", rather than just 1006

This is probably an result of an unexpected use of Moptions and extendable options, rather than a bug per se.

> Hey, 
> 
> thanks for your answer. I completely get your point. However, I think my question as not precise enough.
> 
> I would like to have a numeric input, but many at the same time. When I make a new post, I would like to have an attribute 'wafer_IDs' that specifies the list of wafers this process has been performed with. So for a single post I would like to have a list like this:
> 
> wafer_IDs = numeric value, numeric value, numeric value, extendable
> 
> Note: I am not referring here to the option. The numeric values are freely chooses numbers, the only this that varies from post to post is the number of numeric values put.
> 
> Let me make an example (If the attribute were a string this would be the equivalent):
> 
> 1st post: A process that was run with 3 wafers (ID: 1000, ID: 1001 and ID: 1002):
> wafer IDs = 1000, 1001, 1002
> 
> 2nd post: A process that is run with 2 wafers (ID: 1000 and ID: 1002):
> wafer IDs = 1000, 1002
> 
> The string solves the issue, but is not as nice as having directly a list of integers.
> 
> Thanks for your help!
> 
> Best,
> 
> Nick

Thanks for you help. This is almost it. 

The problem is that the items are options and not freely closable numbers. In the end, with your solution, it will show you all of the previously put IDs which will be 1000s of entries for us. I think I will just put a convention that we have to write the numbers spread with a comma in a string 
field.

Thanks.

Best,

Nick 


> I have replied to this entry, because, for some reason I don't understand, if I reply to your latest entry, I am
> automatically logged out.  I tried this multiple times, and also on many other entries and had no issues other than
> entry 69787 - any reason for this, Stefan?
> 
> Anyway, what about MOptions? That appears to do what your example, and needs two lines in elog.cfg file:
> 
> Moptions WaferID = 1001, 1002, 1003, 1004, 1005
> Extendable Options = WaferID
> 
> I've done a couple of quick tests on a test logbook I keep for such experimentation, and it appears to do all 
> you have asked of it.  I added a new option 1006.  However, I found that one has to add that new one on its own, 
> let the entry become proper, and then edit the entry to add the other, existing, values.   If you tick entries and 
> also add a new one, then your new entry is all those listed on their own, that is you would get and new entry
> in the config file such as "1002 | 1004 | 1006", rather than just 1006
> 
> This is probably an result of an unexpected use of Moptions and extendable options, rather than a bug per se.
> 
> > Hey, 
> > 
> > thanks for your answer. I completely get your point. However, I think my question as not precise enough.
> > 
> > I would like to have a numeric input, but many at the same time. When I make a new post, I would like to have an attribute 'wafer_IDs' that specifies the list of wafers this process has been performed with. So for a single post I would like to have a list like this:
> > 
> > wafer_IDs = numeric value, numeric value, numeric value, extendable
> > 
> > Note: I am not referring here to the option. The numeric values are freely chooses numbers, the only this that varies from post to post is the number of numeric values put.
> > 
> > Let me make an example (If the attribute were a string this would be the equivalent):
> > 
> > 1st post: A process that was run with 3 wafers (ID: 1000, ID: 1001 and ID: 1002):
> > wafer IDs = 1000, 1001, 1002
> > 
> > 2nd post: A process that is run with 2 wafers (ID: 1000 and ID: 1002):
> > wafer IDs = 1000, 1002
> > 
> > The string solves the issue, but is not as nice as having directly a list of integers.
> > 
> > Thanks for your help!
> > 
> > Best,
> > 
> > Nick

Just my 2 cents:

There is a hardcoded limit how many entries the Option list can have. Without looking into the source, I assume the limit also exists for MOptions.
If you want more, you have to recompile elog with the changed limit.

We have used the normal Options attribute and a "Execute new"-script to alter the elog config for the Options list: to sort the list (5 last used entries on top, the rest alphabetical) and remove very old entries, which are not needed any more.
Remark: if you change the elog.cfg, you have to tell elog to reload the cfg. e.g. using "killall -HUP elogd".

Alternatively, you can add javascript code via a html file and the attributes "Top text" or "Bottom text" to manipulate the input fields on the client side.

Both ways are a little bit hacky, but they work.
Best wishes,
Sebastian

> Thanks for you help. This is almost it. 
> 
> The problem is that the items are options and not freely closable numbers. In the end, with your solution, it will show you all of the previously put IDs which will be 1000s of entries for us. I think I will just put a convention that we have to write the numbers spread with a comma in a string 
> field.
> 
> Thanks.
> 
> Best,
> 
> Nick 
> 
> 
> > I have replied to this entry, because, for some reason I don't understand, if I reply to your latest entry, I am
> > automatically logged out.  I tried this multiple times, and also on many other entries and had no issues other than
> > entry 69787 - any reason for this, Stefan?
> > 
> > Anyway, what about MOptions? That appears to do what your example, and needs two lines in elog.cfg file:
> > 
> > Moptions WaferID = 1001, 1002, 1003, 1004, 1005
> > Extendable Options = WaferID
> > 
> > I've done a couple of quick tests on a test logbook I keep for such experimentation, and it appears to do all 
> > you have asked of it.  I added a new option 1006.  However, I found that one has to add that new one on its own, 
> > let the entry become proper, and then edit the entry to add the other, existing, values.   If you tick entries and 
> > also add a new one, then your new entry is all those listed on their own, that is you would get and new entry
> > in the config file such as "1002 | 1004 | 1006", rather than just 1006
> > 
> > This is probably an result of an unexpected use of Moptions and extendable options, rather than a bug per se.
> > 
> > > Hey, 
> > > 
> > > thanks for your answer. I completely get your point. However, I think my question as not precise enough.
> > > 
> > > I would like to have a numeric input, but many at the same time. When I make a new post, I would like to have an attribute 'wafer_IDs' that specifies the list of wafers this process has been performed with. So for a single post I would like to have a list like this:
> > > 
> > > wafer_IDs = numeric value, numeric value, numeric value, extendable
> > > 
> > > Note: I am not referring here to the option. The numeric values are freely chooses numbers, the only this that varies from post to post is the number of numeric values put.
> > > 
> > > Let me make an example (If the attribute were a string this would be the equivalent):
> > > 
> > > 1st post: A process that was run with 3 wafers (ID: 1000, ID: 1001 and ID: 1002):
> > > wafer IDs = 1000, 1001, 1002
> > > 
> > > 2nd post: A process that is run with 2 wafers (ID: 1000 and ID: 1002):
> > > wafer IDs = 1000, 1002
> > > 
> > > The string solves the issue, but is not as nice as having directly a list of integers.
> > > 
> > > Thanks for your help!
> > > 
> > > Best,
> > > 
> > > Nick

Just to add some points for others who may find this of use in future.

The hard coded number of entries options or Moptions can have is 100.  You can edit the code and recompile, but that would
not gain you many more before other problems concerning memory come in.

Options allow you to only select one from the list; Moptions allow multiple selections from the list.

As mentioned by Sebastian (previous poster) and  in my suggestion. I imagined that by Wafer 1060 (say), no new work would be 
being done on wafers 1001, ... 1010, so you could edit the config file and remove those (M)options.  It does not remove these 
wafer IDs from past records, simply that they can no longer be selected for new work to be recorded.    In that way the 
Moptions list remains short but allows for hundreds or thousands of WaferIDs,  ON THE ASSUMPTION that say only 50 (and certainly 
less than 100) are being worked on at any one time.

The numbers I chose here were random, it's more to highlight the principle rather than a prescription.

David.

> Just my 2 cents:
> 
> There is a hardcoded limit how many entries the Option list can have. Without looking into the source, I assume the limit also exists for MOptions.
> If you want more, you have to recompile elog with the changed limit.
> 
> We have used the normal Options attribute and a "Execute new"-script to alter the elog config for the Options list: to sort the list (5 last used entries on top, the rest alphabetical) and remove very old entries, which are not needed any more.
> Remark: if you change the elog.cfg, you have to tell elog to reload the cfg. e.g. using "killall -HUP elogd".
> 
> Alternatively, you can add javascript code via a html file and the attributes "Top text" or "Bottom text" to manipulate the input fields on the client side.
> 
> Both ways are a little bit hacky, but they work.
> Best wishes,
> Sebastian
> 
> > Thanks for you help. This is almost it. 
> > 
> > The problem is that the items are options and not freely closable numbers. In the end, with your solution, it will show you all of the previously put IDs which will be 1000s of entries for us. I think I will just put a convention that we have to write the numbers spread with a comma in a string 
> > field.
> > 
> > Thanks.
> > 
> > Best,
> > 
> > Nick 
> > 
> > 
> > > I have replied to this entry, because, for some reason I don't understand, if I reply to your latest entry, I am
> > > automatically logged out.  I tried this multiple times, and also on many other entries and had no issues other than
> > > entry 69787 - any reason for this, Stefan?
> > > 
> > > Anyway, what about MOptions? That appears to do what your example, and needs two lines in elog.cfg file:
> > > 
> > > Moptions WaferID = 1001, 1002, 1003, 1004, 1005
> > > Extendable Options = WaferID
> > > 
> > > I've done a couple of quick tests on a test logbook I keep for such experimentation, and it appears to do all 
> > > you have asked of it.  I added a new option 1006.  However, I found that one has to add that new one on its own, 
> > > let the entry become proper, and then edit the entry to add the other, existing, values.   If you tick entries and 
> > > also add a new one, then your new entry is all those listed on their own, that is you would get and new entry
> > > in the config file such as "1002 | 1004 | 1006", rather than just 1006
> > > 
> > > This is probably an result of an unexpected use of Moptions and extendable options, rather than a bug per se.
> > > 
> > > > Hey, 
> > > > 
> > > > thanks for your answer. I completely get your point. However, I think my question as not precise enough.
> > > > 
> > > > I would like to have a numeric input, but many at the same time. When I make a new post, I would like to have an attribute 'wafer_IDs' that specifies the list of wafers this process has been performed with. So for a single post I would like to have a list like this:
> > > > 
> > > > wafer_IDs = numeric value, numeric value, numeric value, extendable
> > > > 
> > > > Note: I am not referring here to the option. The numeric values are freely chooses numbers, the only this that varies from post to post is the number of numeric values put.
> > > > 
> > > > Let me make an example (If the attribute were a string this would be the equivalent):
> > > > 
> > > > 1st post: A process that was run with 3 wafers (ID: 1000, ID: 1001 and ID: 1002):
> > > > wafer IDs = 1000, 1001, 1002
> > > > 
> > > > 2nd post: A process that is run with 2 wafers (ID: 1000 and ID: 1002):
> > > > wafer IDs = 1000, 1002
> > > > 
> > > > The string solves the issue, but is not as nice as having directly a list of integers.
> > > > 
> > > > Thanks for your help!
> > > > 
> > > > Best,
> > > > 
> > > > Nick