- Go to Settings > Account Settings > Apps > Apps you use.
- Find the game, click Edit.
- Change Visibility of App to Only me.
- Also delete the This app can also post on your behalf bit.
OpenMeetings is software used for presenting, online training, web conferencing, collaborative whiteboard drawing and document editing, and user desktop sharing. The product is based on OpenLaszlo RIA framework and Red5 media server, which in turn are based on a bunch of open source components. Communication takes place in meeting rooms which are set to different communication, security and video quality modes. The recommended database for backend support is MySQL. The product can be set up as an installed server product, or used as a hosted product.Today we will be installing OpenMeeting on CentOS 6.3 (64-bit). Find a nice place to work:
mkdir /home/dev cd /home/devGo to http://openmeetings.apache.org/downloads.html and download and unpack latest binary.
tar -xzvf ../apache-openmeetings-incubating-2.0.0.r1361497-14-07-2012_1108.tar.gz
- Install PHP and MySQL with
- There are a few problems of setting the collation with MySQL so. Edit
/etc/my.cnfand add the following lines to the mysqld section:
[mysqld] skip-character-set-client-handshake collation-server = utf8_unicode_ci init-connect=’SET NAMES utf8′ character-set-server = utf8
- Then restart MySQL with:
yum install php mysql-server mysql
- Login to MySQL:
- Create the database:
CREATE DATABASE openmeetings;
- Create a MySQL user for the application:
CREATE USER openmeetings;
- Set permissions:
GRANT ALL ON openmeetings.* TO openmeetings@localhost;
- Set password (change **** to your password):
SET PASSWORD FOR openmeetings@localhost=PASSWORD(’****’);
- Log out of MySQL:
- Now we will just check that our new user is set up properly. (Where **** is the password)
mysql -uopenmeetings -p**** openmeetings
- Start off in our dev area:
- Go to http://www.mysql.com/downloads/connector/j/ and download the latest ConnectorJ (at the time of writing this was 5.1.24)
- Unpack it:
tar -xvzf mysql-connector-java-5.1.24.tar.gz
- Move the connector to the correct place in the OpenMeeting directory structure so it can be found by the application:
mv mysql-connector-java-5.1.24/mysql-connector-java-5.1.24-bin.jar openmeeting/webapps/openmeetings/WEB-INF/lib/
- Go to the connectors folder:
- Use the MySQL configuration template:
cp mysql_persistence.xml persistence.xml
persistence.xmland change the MySQL credentials. At the bottom of the file you will see
value="DriverClassName=com.mysql.jdbc.Driver , Url=jdbc:mysql://localhost:3306/openmeetings?autoReconnect…. …. , MaxActive=100 , MaxWait=10000 , TestOnBorrow=true , poolPreparedStatements=true , Username=openmeetings , Password=****"/>Change the Username and Password to what you set earlier. If you want to change the database name
yum install ImageMagickInstalling ImageMagick will install GhostScript as a dependency so we get part 1 of Enabling import of PDFs into whiteboard for free. Part 2 requires installing SWFTools which we will do now:
- Start in our development directory:
- Go to http://www.swftools.org/download.html and get the latest version:
- Unpack with:
tar -xvzf swftools-0.9.2.tar.gz
- If this is a minimal version of CentOS (or you type
gccand get bad command) then you’ll need to install the C compiler and tools:
yum install gcc* automake zlib-devel libjpeg-devel giflib-devel freetype-devel make
- Prepare to build the software:
- Run the pre-build configuration script:
- Build SWFTools:
make installstep so we’ll just fix that before running it.
- Search for the install: directive and change:
rm -f $(pkgdatadir)/swfs/default_viewer.swf -o -L $(pkgdatadir)/swfs/default_viewer.swf $(LN_S) $(pkgdatadir)/swfs/simple_viewer.swf $(pkgdatadir)/swfs/default_viewer.swf rm -f $(pkgdatadir)/swfs/default_loader.swf -o -L $(pkgdatadir)/swfs/default_loader.swf $(LN_S) $(pkgdatadir)/swfs/tessel_loader.swf $(pkgdatadir)/swfs/default_loader.swfto
<TAB>rm -f $(pkgdatadir)/swfs/default_viewer.swf <TAB>$(LN_S) $(pkgdatadir)/swfs/simple_viewer.swf $(pkgdatadir)/swfs/default_viewer.swf <TAB>rm -f $(pkgdatadir)/swfs/default_loader.swf <TAB>$(LN_S) $(pkgdatadir)/swfs/tessel_loader.swf $(pkgdatadir)/swfs/default_loader.swfMake sure that the first and only character at the start of the replacement lines is a TAB and not a space.
- Now we can run:
- Install Libre Office:
yum install libreoffice-writer
[dag] name=DAG RPM Repository baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag gpgcheck=1 enabled=1
- Import keys so we can talk to the repository securely:
rpm −−import http://apt.sw.be/RPM-GPG-KEY.dag.txt
- Start installation:
yum install ffmpeg
yum install soxI have read through the installation instructions for OpenMeeting and they are as clear as mud. Half the documents seem to say that JODConverter is needed and the other half say that it isn’t. Even the project page for JODConverter says that the project isn’t even maintained. It has some connection to OpenOffice/LibreOffice, so I’m installing it anyway just in case.
- Change back to our scratch folder:
- Go to http://code.google.com/p/jodconverter/
- And download the latest version:
- Then unzip it
- Get which version of Java are you running:
- You should get:
java version “1.7.0_13″ Java™ SE Runtime Environment (build 1.7.0_13-b20) Java HotSpot™ 64-Bit Server VM (build 23.7-b01, mixed mode)
- If you don’t then you’ll have to uninstall the GNU version:
yum remove gij rpm -e jre
- And reinstall Oracle’s Java over the top:
- Navigate to: http://www.java.com/en/download/manual.jsp
- And download the appropriate version I selected “Linux x64 RPM".
- Install via the Redhat Package Manager, you might see a couple of errors like “Error: Could not open input file” but you can ignore these.
rpm -i jre-7u13-linux-x64.rpm
iptables -FTo start OpenMeeting:
- Change directory:
/var/lib/mysql/openmeetings/The final part of the installation is run from the web interface so navigate to: http://localhost:5080/openmeetings/install where
localhostis the machine you have installed OpenMeeting on. Click the link Continue with STEP 1. This will take you to the initial configuration screen where you can set up the application: In the Userdata section fill in the admin user Username: admin Password: admin Email: email@example.com In the Configuration section I didn’t touch anything but the names seem pretty self explanatory if you know how to set up your mail system (which is beyond the scope of this document). In the Converters section we need to add the paths to the support utilities as they won’t be available to the servlet container. All the Converter support applications should be in your path except jodconverter-core. I still don’t understand if or how JODConverter is needed, so add a reference to the JOD path anyway.
/home/dev/jodconverter-core-3.0-beta-4/libI leave all the other stuff to their defaults. Finally click INSTALL. The
red5.shscreen will spend a couple of minutes spewing out data, so let it get on with it. When it has finished your web browser will sent you to the “Installation Complete!” page. Click Enter the Application and login with Username as admin and Password as admin. The rest is up to you! Good luck.
- Right-clicked on the Task manager icon in the systray and the menu appeared. The menu items were click-able but the clicks wouldn’t register. The menu wouldn’t disappear after that, no matter what you did.
- The minimized icon in the systray was spiking, It appeared to be flashing as it rapidly switched from high CPU to low CPU.
- I couldn’t start any explorer sessions using the following methods:
- The WindowsKey-E wouldn’t work.
- Clicking New Task… inside the Task manager and running
- First we need to start a Powershell session, because a normal command window doesn’t have the right tools in its path. Start->Run
- Next list the processes currently running on the machine.
PS C:\Users\mrn> Get-Process Handles NPM(K) PM(K) WS(K) VM(M) CPU(s) Id ProcessName ——- —— —– —– —– —— – ———– … 118 9 4552 11972 98 0.95 4132 taskmgr …
- Make a note of the the Id of the Task manager process (taskmgr).
- Powershell makers have created a “kill” alias to the Stop-Process command to make it look a bit more like wonderful unix.
- You may find that the systray icon is still present. If you hoover over the icon it will disappear.
One of our offices uses a Cisco ASA/PIX and we want to manage all the IP address allocations with DHCP. The main benefit of this is that the dynamic IP address allocations can be managed centrally. If we change the default gateway of the network then no one needs to make any changes to the network settings on their devices.
Each device on the network gets an IP address when they ask for it and keeps it for a fixed amount of time called a lease. When that time has expired the device releases the address and asks for another. In most cases the device will be given the same information again by the DHCP server.
If you have a network with a lot of laptops, phones, tablets or printers then devices will come and go quite frequently. You will find that if you switch off the device for any amount of time it will come back with a different address. For laptops and personal devices this doesn't matter. However if the device is a shared resource like a printer or file server then it can be a problem. Anyone who still wants to use that shared resource now needs to know about its new address.
We want to be able to tell the DHCP server that while it can allocate IP addresses from a certain pool we want to make sure that it can only allocate some of them to specific network devices. This will ensure that if a printer goes for repair and comes back in a week, when it's switched back on it will have the same IP address that it always had.
Unfortunately there isn't a structured way of doing this with a Cisco ASA/PIX so we need to find a work-a-round.
The following instructions describe how to do this but they also describe how to get into the administration section of the Cisco ASA/PIX because most of the instructions (on the internet) assume you know how to do this already. There is a strong argument that you should know what you are doing before you play with a router/firewall's configuration but if your network man is on holiday then you might have to get your hands dirty yourself.
There are various GUIs to help with this kind of administration and that's fine if you are at the customer's site but most of the time I'm not. Short of connecting to the VPN and using the management console the easiest way is to go in on the command line using telnet.
In the following scenario we have been told that the printer is set to use DHCP and its current IP address is
192.168.1.69. We want to add that to the pool and make sure it is given the same IP address each time.
So connect to the Cisco ASA/PIX. There's no user name only a password, so enter the user level password:
host# telnet 192.168.1.254 User Access Verification Password: *** Type help or '?' for a list of available commands. cisco>
Once logged in we need to switch to the administration mode.
cisco> enable Password: ***
The user told us the printer was currently switched on so we can read the router's Address Resolution Protocol table which lists the mappings between IP addresses and Media Access Control address (MAC address or address network card address). We'll need the MAC address as it is the reference the router talks to whereas the IP address is only an abstraction.
cisco# show arp inside 192.168.1.69 0c1b.ae43.bd21
Now we can check that the
192.168.1.69 address is in the pool of DHCP addresses
cisco# show running-config dhcpd dhcpd address 192.168.1.20-192.168.1.70 inside dhcpd dns 22.214.171.124 126.96.36.199 interface inside dhcpd domain 360inspire.com interface inside dhcpd enable inside !
which it is and we can check that the MAC address is not currently assigned to anything else.
cisco# show running-config arp cisco#
Our sanity checks are ok so we are ready to proceed with the update. We must enter the configuration section by specifying that we will change the configuration from the terminal.
cisco# configure terminal cisco(config)#
Once in the configuration section we can start changing the settings. The following line says that when we see the MAC address
0c1b.ae43.bd21 we are going to statically refer to it with the IP address of
192.168.1.69. The Cisco ASA/PIX knows that this is already in the DHCP pool and won't allocate it again.
cisco(config)# arp inside 192.168.1.69 0c1b.ae43.bd21
We can check the change has been added with the following command:
cisco(config)# show running-config arp arp inside 192.168.1.69 0c1b.ae43.bd21 cisco(config)#
If you have miss-typed or you would like to remove an old entry you can do so by prefixing the existing command with
no. For example:
no arp inside 192.168.1.69 0c1b.ae43.bd21
The changes are currently only made in memory, so we need to write the current running configuration down to disk.
cisco(config)# write mem Building configuration... Cryptochecksum: 389f1812 7c29dd7b 50ad4ca0 4ce3fd5e 4396 bytes copied in 1.480 secs (4396 bytes/sec) [OK] cisco(config)#
And finally the job is done so we exit cleanly
cisco(config)# cisco(config)# exit cisco# exit Logoff Connection closed by foreign host.
Rebooting the printer will result in the printer coming back with the same IP address.
Many thanks to goldplated for his original article.
- Your VPN administrator will have given you a zip file containing your OpenVPN configuration. It will have a name like
- Finder will automatically unpack it and create a folder called
- Go to Tunnelblick’s download page: http://code.google.com/p/tunnelblick/wiki/DownloadsEntry and download Tunnelblick 3.3beta21b.
- Launch the download.
- Double-click the Tunnelblick.app icon.
- Click I have configuration files.
- Click OpenVPN Configuration(s).
- Click Open Private Configuration Folder.
- The Finder will open.
- Drag the
youname-12345configuration folder to the same place where you see the Launch Tunnelblick icon.
- Click Done.
- Click Do not check for a change.
- Click Don’t check for automatic updates. The latest version is not compatible with Mountain Lion so we don’t want your Mac to automatically install it!
Warning! Tunnelblick was unable to start OpenVPN to connect yourname-12345/<VPN name>. For details, see the OpenVPN log in the VPN Details… windowClick the greyed out tunnel icon again and select VPN Details. For the sake of those people googling (searching) for a solution here is the error message from the log to bring you in!
2013-01-18 00:49:41 *Tunnelblick: OS X 10.6.8; Tunnelblick 3.3beta21b (build 3114.3185) 2013-01-18 00:49:41 *Tunnelblick: Attempting connection with yourname-12345/vpn-name; Set nameserver = 1; monitoring connection 2013-01-18 00:49:41 *Tunnelblick: /Applications/Tunnelblick.app/Contents/Resources/openvpnstart start yourname-12345/vpn-name.ovpn 1337 1 0 0 0 49 -atADGNWradsgnw 2013-01-18 00:49:42 *Tunnelblick: Could not start OpenVPN (openvpnstart returned with status #242) Contents of the openvpnstart log: OpenVPN returned with status 1, errno = 2: No such file or directory Command used to start OpenVPN (one argument per displayed line): /Applications/Tunnelblick.app/Contents/Resources/openvpn/openvpn-2.3-alpha1/openvpn –cd /Users/username/Library/Application Support/Tunnelblick/Configurations –daemon –management 127.0.0.1 1337 –config /Users/username/Library/Application Support/Tunnelblick/Configurations/yourname-12345/vpn-name.ovpn –log /Library/Application Support/Tunnelblick/Logs/-SUsers-Syourname-SLibrary-SApplication Support-STunnelblick-SConfigurations-Syourname-12345-Sclient–vpn-name.ovpn.1_0_0_0_49.1337.openvpn.log –management-query-passwords –management-hold –script-security 2 –up /Applications/Tunnelblick.app/Contents/Resources/client.up.tunnelblick.sh -m -w -d -atADGNWradsgnw –down /Applications/Tunnelblick.app/Contents/Resources/client.down.tunnelblick.sh -m -w -d -atADGNWradsgnw –up-restart –route-pre-down /Applications/Tunnelblick.app/Contents/Resources/client.route-pre-down.tunnelblick.sh -m -w -d -atADGNWradsgnw Contents of the OpenVPN log: Options error: –ca fails with ‘ca.crt’: No such file or directory Options error: –cert fails with ‘yourname-12345.crt’: No such file or directory Options error: –key fails with ‘yourname-12345.key’: No such file or directory Options error: Please correct these errors. Use –help for more information. More details may be in the Console Log’s “All Messages”Now the fix.
- Open a Finder window and go to:
- Edit the file
- At the bottom of the file you will see the following lines:
ca ca.crt key yourname-12345.key cert yourname-12345.crt
- The launcher was complaining that it couldn’t find the files so there is something wrong with how the software is working out which directory to look in.
- You must change the lines to include the full path to the file.
ca “/Users/username/Library/Application Support/Tunnelblick/Configurations/yourname-12345/ca.crt” key “/Users/username/Library/Application Support/Tunnelblick/Configurations/yourname-12345/yourname-12345.key” cert “/Users/username/Library/Application Support/Tunnelblick/Configurations/yourname-12345/yourname-12345.crt”
- After the change, it doesn’t matter what the application thinks is the configuration directory as we are using the absolute path to the files instead of a relative one.
- Go up to the greyed out tunnel icon and select yourname-12345->Connect <VPN name>.
- And hay presto, you’re in.