Troubleshooting Steps Of Tomcat Server
0 comments 12/10/2010 09:25:00 PM Posted by Meghana M BhombhoreLabels: Tomcat, Troubleshooting
Troubleshooting Steps to check whether the Tomcat server is runing or not?
Step1 : Check ps command output
#ps -ef | grep tomcat
Step2 : Check with nmap whether port 8080 is opened or not?
#nmap localhost
Step3 : Check with telnet command as shown in below by executing GET / HTTP/1.0 Host: localhost command once logged in to server at 8080 port.
#telnet localhost 8080 Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. GET / HTTP/1.0 Host: localhost
This command should output hte test tomcat page.
Enjoy the troubleshooting:)
How To Enable Verbose Mode For SSH Logins?
0 comments 12/09/2010 06:43:00 AM Posted by Surendra Kumar AnneLabels: How-To's, SSH, Troubleshooting
How we can login to remote server through ssh?
#ssh user@servername
or
#ssh -l user servername
or
#ssh ip-add
So when you will execute the above command you will get the password prompt. But if you want to see what will happen when you execute ssh command you have to enable verbose or debugging mode. To do this we have to apply -v option at the time of login as shown in below example.
#ssh -v surendra@ftp2.linuxnix.com
root@krishna:/home/surendra# ssh -v surendra_a@ftp2.linuxnix.com
OpenSSH_5.5p1 Debian-4ubuntu4, OpenSSL 0.9.8o 01 Jun 2010
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to ftp2.linuxnix.com [92.32.56.78] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Remote protocol version 1.99, remote software version OpenSSH_4.0
debug1: match: OpenSSH_4.0 pat OpenSSH_4*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.5p1 Debian-4ubuntu4
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'ftp2.linuxnix.com' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: password
surendra_a@ftp2.linuxnix.com's password:
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: Sending environment.
debug1: Sending env LANG = en_IN
Last login: Thu Dec 9 20:02:47 2010 from 1.23.6.79
After logout
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: channel 0: free: client-session, nchannels 1
Connection to ftp2.linuxnix.com closed.
Transferred: sent 2072, received 2072 bytes, in 27.7 seconds
Bytes per second: sent 74.8, received 74.8
debug1: Exit status 0
So if you want more verboseness you can use up to 3rd level(-vvv) as shown below
#ssh -vvv surendra_a@ftp2.linuxnix.com
How To Play .ram(Real Audio Metadata) In Redhat/Ubunto
0 comments 2/02/2010 08:31:00 AM Posted by Meghana M BhombhoreLabels: Audio, Troubleshooting
The .ram (Real Audio Metadata) is an properitery audo formate from Real media network's which is having its player called Real player.
This format is a stream media format, ie media is stramed from other source.
So how to play this file in Linux?
Ans : To play this we have to install mplayer. you may get doubt that why I am saying mplayer, i dont suggest to you a properitery real plyaer which will be annoying you all sorts of ads etc. mplayer is a good open source software with which you can play almost every formate. This is my favorite player after VLC player, which is once again a open source.
These are the file formates supported by mplayer
1. Physical media : CDs, DVDs, Video CDs
2. Container formats : 3GP, AVI, ASF, FLV, Matroska, MOV (QuickTime), MP4,
NUT, Ogg, OGM, RealMedia
3. Video formats : Cinepak, DV, H.263, H.264/MPEG-4 AVC, HuffYUV, Indeo, MJPEG, MPEG-1, MPEG-2, MPEG-4 Part 2, RealVideo, Sorenson, Theora, WMV
4. Audio formats : AAC, AC3, ALAC, AMR, DTS, FLAC, Intel Music Coder, Monkey's Audio, MP3, Musepack, RealAudio, Shorten, Speex, Vorbis, WMA
5. Subtitle formats : AQTitle, ASS/SSA, CC, JACOsub, MicroDVD, MPsub, OGM, PJS, RT, Sami, SRT, SubViewer, VOBsub, VPlayer
6. Image formats: BMP, JPEG, MNG, PCX, PTX, TGA, TIFF, SGI, Sun Raster
7. Protocols : RTP, RTSP, HTTP, FTP, MMS, Netstream (mpst://), SMB –wikipedia.org
How to install mplayer in linux?
In Ubuntu Linux:
sudo apt-get install mplayer
In Redhat Linux:
yum install mplayer
