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bash-'s questions

Martin Hope
bash-
Asked: 2012-05-03 08:26:54 +0800 CST
  • 2

I want to disable the requirement of sudo or running as root for a bash script that does backups with tar.

I added this line to my sudoers file

username ALL=NOPASSWD: /bin/tar

However after I added that it still shows permissions denied when I run this backup command

/bin/tar -cvpzf /root/sysBackup/backup.tar.gz --exclude=/backup.tar.gz --exclude=/proc --exclude=/lost+found --exclude=/sys --exclude=/mnt --exclude=/media --exclude=/dev /

These are the errors

/bin/tar: Removing leading `/' from member names                                                                                                          
tar (child): /root/sysBackup/backup.tar.gz: Cannot open: Permission denied                                                                                
tar (child): Error is not recoverable: exiting now

What am I doing wrong?

backup ubuntu sudo tar
Martin Hope
bash-
Asked: 2012-01-20 08:31:51 +0800 CST
  • 51

this is my first web app deployment and am running into all sorts of issues.

I am currently going for a nginx + gunicorn implementation for the Django app, but mostly this question relates to nginx configurations. For some context - nginx would receive connections and proxy to the gunicorn local server.

in the nginx configurations, where it says server_name do I have to provide one? I don't plan to use domain names of any kind, just through my network's external ip (it is static) and the port number to listen to.

My desire is that when I access something like http://xxx.xxx.xxx.xxx:9050 I would be able to get the site.

The following is the sample code that I will base the configurations on for reference.

   server {
        listen   80;
        server_name WHAT TO PUT HERE?;

    root /path/to/test/hello;

    location /media/ {
        # if asset versioning is used
        if ($query_string) {
            expires max;
        }
    }
    location /admin/media/ {
        # this changes depending on your python version
        root /path/to/test/lib/python2.6/site-packages/django/contrib;
    }
    location / {
        proxy_pass_header Server;
        proxy_set_header Host $http_host;
        proxy_redirect off;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Scheme $scheme;
        proxy_connect_timeout 10;
        proxy_read_timeout 10;
        proxy_pass http://localhost:8000/;
    }
        # what to serve if upstream is not available or crashes
        error_page 500 502 503 504 /media/50x.html;
     }
ubuntu nginx gunicorn
Martin Hope
bash-
Asked: 2011-09-29 23:42:39 +0800 CST
  • -1

I am in the process of buying a dell server hosting a database and a web application and a low volume website.

I am wondering what differences do the NICs make? Dell is quoting me with a Broadcom 5716 Gigabit w/o TOE which is default, but I see other choices.

How are those better?

Thanks for the comments. I will most likely be using ubuntu and I guess I will need to do some research.

networking nic dell-poweredge
Martin Hope
bash-
Asked: 2011-09-05 06:59:29 +0800 CST
  • 5

OKay I started delving into networking yesterday and just setup my ubuntu server so I am a complete noob.

I want to ask what are the input/out/forward chains in iptables? Say I want to open port 22 for ssh access, would I need to use all 3 of these? or just one of two of them?

iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 22 -j ACCEPT
iptables -A FORWARD -p tcp --dport 22 -j ACCEPT

thanks!

ubuntu networking iptables
Martin Hope
bash-
Asked: 2011-09-03 22:37:05 +0800 CST
  • 1

I have a static IP set on a Planet VRT-311S VPN router and port 22 (UDP and TCP) forwarded to an Ubuntu server on the LAN. I am still unable to connect to the Ubuntu server.

I am currently using the following command on an external computer:

ssh -p 22 <router's ip address>

I am still unable to connect to the Ubuntu server. How can I troubleshoot this?

ubuntu ssh ip