John McLear's School Technology » etherpad

Etherpad – cp: missing destination file operand after `lib/’

johnyma22 — Tue, 24 Aug 2010 18:28:52 +0000

This error is caused by the MYSQL_CONNECTOR_JAR environment variable/export not being set.

Set it by typing..

export MYSQL_CONNECTOR_JAR="path to your mysql connector.jar"

Making Etherpad content indexable by Search Engines

johnyma22 — Sun, 22 Aug 2010 16:51:16 +0000

Etherpad contents very rarely shows up on Search results. But with forums and wikis moving over to it I wanted to find a way to give etherpad a bit of an SEO edge..

Firstly I looked at the twitterstyletags plugin which creates an rss feed or all pads.. This is a perfect solution for a sitemap so that’s that box ticked

Next I knew that Etherpad served pad contents in an iframe so I looked at better ways to get content for search engines to index. Etherpad includes Read only versions of each pad, these read only versions push the content to the user without displaying it in an iframe so it is a perfect fix for the problem.

My final step will be to find someone to modify the twitterstyletags plugin RSS feed to create a sitemap.xml and to create a plugin that allows users to easily link back from read only versions to currently active pads.

fsc Could not connect to compilation daemon in CentOS

Admin Admin — Fri, 20 Aug 2010 17:48:14 +0000

Trying to install etherpad on CentOS and I ran into the fsc issue. Scalac throws a load of errors during compile so that’s a non starter. Interestingly enough even if you change fsc to scalac in comp.sh you still get fsc errors. Even overwriting the fsc binary w/ the scalac binary throws errors..

scala version: 2.8.0 (installed from tar) also tested 2.7.7

Error output:

# fsc -verbose
[Server arguments: -d /usr/share/etherpad/. -verbose]
[VM arguments: ]
[Temp directory: /tmp/scala-devel/root]
[Executed command: List(/usr/local/scala/scala-2.8.0.final/bin/scala, scala.tools.nsc.CompileServer)]
[Port number: -1]
Could not connect to compilation daemon.

selinux is disabled:

# /usr/sbin/sestatus
SELinux status:                 disabled

Paths set as:

# export | grep SCALA
declare -x SCALA="/usr/local/scala/scala-2.8.0.final/bin/scala"
declare -x SCALA_HOME="/usr/local/scala/scala-2.8.0.final"
declare -x SCALA_LIBRARY_JAR="/usr/local/scala/default/lib/scala-library.jar"

/etc/hosts is correct, we can ping localhost:

# ping localhost
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.047 ms
64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.047 ms

Tried fsc -reset to no avail:

# fsc -reset
Could not connect to compilation daemon.

Anyone any other suggestions?

Note: I was able to get it to compile the .jar file after a hell of a lot of tweeking and playing around w/ scala_home etc. However fsc still fails/failed. Spent quite a lot of hours on this, would be nice to get a resolution to the fsc issue.

Note: Last time I helped someone with this it was due to the VPS (don’t try to install Etherpad on a VPS) didn’t provide swap space so erm, yeah.. Of course scala and fsc didn’t work properly.. I isolated this by doing

scala -verbose >> logfile.log 2>&1

The error I got was this one which is commonly related to VPS’…

Etherpad Nginx Config

johnyma22 — Wed, 11 Aug 2010 12:57:07 +0000

Paste to /etc/nginx/proxy.conf

# proxy.conf
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;

Paste to /etc/nginx/sites-enabled/mysite

server {
listen %Replace_with_your_adapters_IP%:80;
server_name mydomain.com;
access_log /var/log/nginx/mydomain.com.access.log;
error_log /var/log/nginx/mydomain.com.error.log;
location / {
proxy_pass http://localhost:9000/;
include /etc/nginx/proxy.conf;
}
}

Restart nginx

/etc/init.d/nginx restart

Ubuntu Etherpad Init script won’t work

johnyma22 — Tue, 10 Aug 2010 15:08:16 +0000

This is due to a permission error on the log folder

Quickest fix is:

chown -R etherpad /var/log/etherpad

Try that then do

cd /usr/share/etherpad/bin
sudo -u etherpad ./run.sh

Etherpad Startup execution failed with non-200 response: 500

johnyma22 — Tue, 29 Jun 2010 16:03:52 +0000

Etherpad won’t start and errors with output

Etherpad Startup execution failed with non-200 response: 500

Cause:

Etherpad can’t talk to MySql

Things to check:

1. Your /etc/hosts

2. Your MySQL conf under networking – /etc/mysql/my.cnf

3. Your MySQL conf bind-address – /etc/mysql/my.cnf

4. The etherpad.SQL_JDBC_URL value in /usr/share/etherpad/etherpad/etc/etherpad.local.properties

Make sure these are correct then restart mysql. Don’t assume that connecting with mysql -uroot -ppassword etherpad is a good test.

Grabbing Etherpad Source code using Git

johnyma22 — Tue, 15 Jun 2010 20:12:34 +0000

To grab the latest Etherpad source code prior to installation it is just one command.

Pre-reqs: git, git-core (possibly?)


git clone git://github.com/ether/pad.git

Done.

You can grab an older version by doing

git log

finding where ye wanna go back to then

git checkout COMMITVALUE ie bd2190f0453f6a189b84b3ff2f1af05d5e023801

Etherpad emails show wrong port (9000) when sending from version 1 running apache and mod_proxy

Admin Admin — Thu, 06 May 2010 21:13:51 +0000

Etherpad emails may show as port 9000 if you are using mod_proxy(apache) in front of etherpad.

If this is a problem simply edit:

/usr/share/etherpad/etherpad/etc/etherpad.local.properties
replacing
hidePorts = false
with
hidePorts = true

Etherpad Office Import & Export after Upgrade to V1

Admin Admin — Wed, 05 May 2010 23:19:19 +0000

: Image by Kiberpipa via Flickr

V1 does not natively support office import / exports yet due to a licensing issue but if you had it working before you can do a few steps that will get you started. We use Open Office in a headless mode to accomplish this.

1. Copy the cos.jar to infrastructure/lib (replacing etherpadbackup is the folder you backed your original etherpad installation to (etherpad

cp /usr/local/etherpadbackup/trunk/infrastructure/lib/cos.jar /usr/share/etherpad/infrastructure/lib/

2. Run soffice in headless mode

/usr/bin/soffice -headless -nofirststartwizard -accept=”socket,host=localhost,port=8100;urp;StarOffice.Service”

3. Uncomment the lines in execution.scala that are commented “REMOVED_COS_OF_COS”

4. Reset your exports

export JAVA_HOME="/usr/lib/jvm/java-6-sun"
export SCALA_HOME="/usr/share/java"
export JAVA="/usr/bin/java"
export SCALA="/usr/bin/scala"
export PATH="/usr/bin:/usr/bin:/usr/local/mysql/bin:$PATH"
export MYSQL_CONNECTOR_JAR="/usr/share/java/mysql-connector-java-5.1.10.jar"

4. Rebuild and Run.

cd /usr/share/etherpad/etherpad/
bin/rebuildjar.sh clearcache
/etc/init.d/etherpad stop
/etc/init.d/etherpad start

Etherpad on Android based devices

Admin Admin — Sun, 28 Mar 2010 15:50:41 +0000

This isn’t working yet, nor is it working on the iphone. It is because the web browser that comes on these devices does not have the correct support for the Etherpad objects. You can however view pads in read only by browsing to the usual URL.

We expect more mobile support in late 2010 but it may not be something we can change server side, it may be dependant on the client device browser implementing designMode. Opera Mini now has partial support for designMode however I haven’t tested Etherpad with it. *Update 31/03/2010 – This doesn’t work

iPhone claims to have support for this but of course it doesn’t work.

Android’s web browser is built on the WebKit application Framework. Optional browsers Steel and Dolphin do not appear to support designMode at current.

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