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• Disk partition errors after size change

  - by benjamin.d

  I increased the disk size of one of my VM when it was running. After a reboot, I get the following error message (at boot time): Mounting local filesystems...failed Now the VM is only accessible through ESX console (not through ssh), and nothing is working anymore.... I already tried to run fsck, but without success. The result of mount: The result of blkid: The result of fstab: Thanks for your help

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• setting up repositories for users, what does this entail?

  - by homestead

  Say I wanted to setup a server, where I could create GIT repositories for users. I would only give them access via SSH. I would need to restrict them to say 100megs or 1 gig etc. Is this a complicated setup or one of the more straight forward setups?

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• Apache shuts down from time to time

  - by Dugi

  I'm having trouble with my VPS as it keeps shutting apache down at least twice a day. The server is running on CentOS 6 with the latest apache. By shutting down I mean I have to go into SSH and type in this command in order to bring it up again: /sbin/service httpd start I'm not very good with servers and my host doesn't seem to have a nice customer service. Any help would be appreciated as these unexpected downtimes really know to kill one's mood.

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• Is Ubuntu 10.04 suitable for working on for web development

  - by wombart

  Hi everyone, Im just wondering what everyone's experiences are with the latest Ubuntu 10.04 version? Is it stable enough for a working environment? I require it for web development, so using VMs, IDEs, connecting to VPNs, SSH to servers, etc. Im currently using 9.04 and found 9.10 unstable and problematic at times (such as problems connecting to VPN) Any input would be appreciated, thanks!

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• Tool to run same key strokes on multiple unix machines

  - by virtualvoid

  I want to run the same commands on multiple machines, I know I can do this using ssh scripting or things like clusterssh, however I don't want to install anything on the server. (Don't have the rights) What I want is to just clone the keystrokes across multiple machines e.g. run cat /etc/oratab on one window and same is run on multiple windows e.g. in putty, is there a tool to do that from a windows client.

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• Ok, i know i messed things up pretty bad..... virtualmin sub domain user taken over root login

  - by Collins Areba

  ok, here is the scenario, i was playing around the import wizard and imported a subdomain i had created on a linode and now im having trouble cause the user i assigned to the subdomain is root. Now when i log into webmin / usermin / virtualmin with my root credentials, i end up administering a sub domain instead of working on the webmin root console. Is there a way of a) deleting the virtualhost completely from usermin using ssh? b) rectifying this ..

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• Test and Production Server

  - by Mike Silvis

  I am using Git for a test and production server and I'm trying to figure out the best way to update the production server. I have limited SSH access, and don't want to manually update my production server using FTP. I essentially would like to just be able to run a simple command and have the whole production server files match my dev. It is also important to note that users will be uploading images, and other files to our production server only, that we can not lose. Thanks,any help is appreciated

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• How to "FTP jail" with apache?

  - by Nate

  I need to allow someone access to my website via FTP, but there are a number of directories that the person must not be allowed to view or modify. For example, something like this: private_info_1 public_info_1 private_info_2 public_info_2 In this example, the FTP user would need to be allowed to do stuff in the public directories, but not the private ones. How do I go about doing this with an Apache server? I have cPanel and SSH access.

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• identify a router that cuts certain port

  - by Sergiks

  Is there a way to identify which particular router between me and some server blocks connections on certain port? I am in a hotel in Thailand, where they have recently changed some settings in their equipment, and now I cannot reach any of my servers in Europe and USA by SSH / port 22. More traditional ports like 80 or 21 are open. traceroute command shows each particular router in the middle. But is there a way to identify one that filters out port 22?

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• What is the correct network configuration for a devStack VM (virtualbox)?

  - by Olivier

  Usually when I setup a new Ubuntu VM, i keep the eth0 in NAT mode to get the internet & I add a eth1 interface in HostOnly mode so that I can ssh. But using this devStack guide : Running a Cloud in a VM, it looks like it tried to use eth0 as the public interface (install got stuck because eth0 lost the network). I know an OpenStack setup usually requires two NICs, so I'm wondering what is the correct configuration for my VM.

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• GIT server with username and password authentication

  - by Giorgio

  I would like to set a GIT server and let my developers to login using username and password in order to commit and make changes to the projects. I need also to manage developer access to projects (I think I should use gitolite for this). How can I do that? I am used to SVN which is easy because you can set username and password for each developer, which can easily access the repository without having the generate an ssh key and put it on the server. Thanks

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• Settings permissions on /var/www

  - by ed1t

  I'm running ubuntu server and have apache installed as a web server. I'm letting my web developers upload files through sftp (ssh) to /var/www. I'm using www-data group to control access to /var/www folder. They are able to upload the files successfully but when they try to access that file in a browser, they get a 403 forbidden error. How do I make sure that when the files are uploaded, the permissions are set right?

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• What means empty iptables?

  - by Memochipan

  I'm using CentOS and when type the command: iptables -L -v The output is as follows: Chain INPUT (policy ACCEPT 19614 packets, 2312K bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 13881 packets, 32M bytes) pkts bytes target prot opt in out source destination What does this means I'm able to connect using SSH. Where can I see that rule?

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• Other processes take over port 80 when restarting Apache - why, and how to solve?

  - by user72149

  I have a CentOS 5.5 server running Apache on port 80 as well as some other applications. All works fine until I for some reason need to restart the httpd process. Doing so returns: sudo /etc/init.d/httpd restart Stopping httpd: [ OK ] Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:80 (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs First I thought perhaps httpd had frozen and was still running, but that was not the case. So I ran netstat to find out what was using port 80: sudo netstat -tlp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:7203 *:* LISTEN 24012/java tcp 0 0 localhost.localdomain:smux *:* LISTEN 3547/snmpd tcp 0 0 *:mysql *:* LISTEN 21966/mysqld tcp 0 0 *:ssh *:* LISTEN 3562/sshd tcp 0 0 *:http *:* LISTEN 3780/python26 Turns out that my python process had taken over listening to http in the instant that httpd was restarting. So, I killed python and tried starting httpd again - but ran into the same error. Netstat again: sudo netstat -tlp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:7203 *:* LISTEN 24012/java tcp 0 0 localhost.localdomain:smux *:* LISTEN 3547/snmpd tcp 0 0 *:mysql *:* LISTEN 21966/mysqld tcp 0 0 *:ssh *:* LISTEN 3562/sshd tcp 0 0 *:http *:* LISTEN 24012/java Now my java process had taken over listening to http. I killed that too and could then successfully restart httpd. But this is a terrible workaround. Why will these python and java processes start listening to port 80 as soon as httpd is restarted? How to solve? Two other comments. 1) Both java and python processes are started by apache from a php script. But when apache is restarted, they should not be affected. And 2) I have the same setup on two other machines running Ubuntu and there's no problem there. Any ideas? Edit: The Java process listens to port 7203 and the python process supposedly doesn't listen to any port. For some reason, they start listening to port 80 when apache is restarted. This hasn't happened before. On Ubuntu it runs fine. For some reason, on my current CentOS 5.5 machine, this problem arises.

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• Remote edit with local editor (Linux)

  - by Eisaj

  Hello, I have a server I can ssh into, and I am also running Ubuntu. How do I edit this remote file using any program I have installed on my local Ubuntu, without copying it to local, editing it, and copying it back? Thanks!

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• Server is sending SPAM but it's not an open relay

  - by alexandernst

  I have a problem with Dovecot + Postfix. My server is sending SPAM from the local user "dovecot", but my server is not configured as an open relay (mails can be sent without auth-ing only from localhost). Also, nobody except me, has SSH access to the server. How can I find what exactly is triggering all those SPAM mails? How can I get something like a backtrace that shows what exactly happened the moments before a SPAM email got in the queue of postfix? Regards

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• Git push from post-receive

  - by meka

  I have two servers, let's call them first and second. First one is where the real development is done, and second one should be the replica. What I would like to do is put "git push" in post-receive, but there is one problem. Post-receive is executed as the user doing git push to first server, so I can't chmod 600 ssh key with no pass. What is the best practice for this? Thanx!

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• How copy with shell commands(Linux) from 1 computer have (permanent url + open port) to 2 computer (secure way)?

  - by BenBen

  How copy with shell commands(Linux) from remote(my office computer) computer (permanent url + open port) to my (home) computer home/remote_computer_user/Desktop/test1.txt to my home computer home/home_computer_user/Downloads/ ? What I am doing: 1. ssh <user>@<computer1address> -p <port> :: success to get remote computer shell () 2. (I think I should use scp , but I dont how exactly in my case) Please if you can, write the exact commands that i should to from the shell Thanks in advance

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• How to BIND IP Address on Centos 5? Need Tutorial

  - by Clear.Cache

  Can someone show me a simplified tutorial that explains how to bind IPs in Linux (Centos / Redhat)? For example, got a dedicated server with a /29 123.123.123.0/29 So I have to bind that /29 where 123.123.123.2 is the IP I'll access via ssh in order to do so. Thanks.

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• Can I change a user password in Linux from the command line with no interactivity?

  - by Paul Hoffman

  I have a specific use case where I would really like to be able to change a user's password with a single command with no interactivity. This is being done in a safe fashion (over SSH, and on a system with only one user able to be logged in), so it's fine to expose the new password (and even the old one, if necessary) on the command line. FWIW, it's a Ubuntu system. I just want to avoid having to add something Expect-like to this system for just this one task.

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• SFTP "Could not connect to server error"

  - by Ash

  I'm having problems connecting to my server via SFTP. I can SSH in to the system perfectly fine, but for some odd reason, i'm not able to SFTP (which I used to be able to). I have cleared ALL my iptables rules iptables -F still no access. I have removed the sub system (to allow FULL access) still no access. I can't for the life of me figure out what the problem is. Thus is therefore making a solution impossible.

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• [CentOS 4.8] nslookup resolves domains to IPs, but I can't get a response to pings to external servers

  - by Beco

  I have a fresh install of CentOS 4.8 running on an internal development server. I haven't done anything to it besides setting up sudoers and SSH. I can SSH into the server and from there resolve domains to IPs and ping internal servers, but for some reason I don't get any response from pinging external servers. The software firewall is disabled, and the problem is present with both static and DHCP-assigned network configurations. The network domain controller is a Windows Server 2003 box. $ nslookup google.com Server: 10.254.2.5 Address: 10.254.2.5#53 Non-authoritative answer: Name: google.com Address: 74.125.47.147 Name: google.com Address: 74.125.47.99 <etc...> 10.254.2.5 is the Win2K3 server. $ ping google.com PING google.com (74.125.47.106) 56(84) bytes of data. It just hangs here indefinitely. $ cat /etc/resolv.conf ; generated by /sbin/dhclient-script search <...snip...>.local nameserver 10.254.2.5 nameserver 10.254.2.124 10.254.2.124 is the backup DC server, which is currently off and tombstoned by this point. The snipped section is our company name. # ifconfig eth0 Link encap:Ethernet HWaddr <snip> inet addr:10.254.2.101 Bcast:10.254.2.255 Mask:255.255.255.0 inet6 addr: <snip>/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:80066 errors:0 dropped:0 overruns:0 frame:0 TX packets:4421 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7810133 (7.4 MiB) TX bytes:590550 (576.7 KiB) Interrupt:225 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:32 errors:0 dropped:0 overruns:0 frame:0 TX packets:32 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:8104 (7.9 KiB) TX bytes:8104 (7.9 KiB) # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.254.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 0.0.0.0 10.254.2.5 0.0.0.0 UG 0 0 0 eth0 And, for good measure, a snapshot of the current ethernet config via the system-config-network GUI. Edit: I don't yet have enough rep to post images, so here's a link. Sorry! system-config-network snapshot I'm pretty green when it comes to setting up *nix dev servers and network configuration in general, so please let me know if I've left out critical information, or posted information I shouldn't have posted. Thanks!

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• [Linux] Ipchains and iptables - block all ports except...

  - by user198003

  hi all, can you help me how can i block all ports except ssh (port 22) httpd (port 80) ... using iptables and iphains. thank you in advance!

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• No mail for root message [closed]

  - by Werulz

  I want to receive email when people login to my server via ssh (as a security measure), however, when I login, I get: No mail for root Email is [email protected] Does it need Postfix to work? I already install it on server but i haven't configured it Can you give me a tutorial to configure Postfix in case it needed? Will email be sent even if my domain hasn't been propagated yet? I added this in .bash_profile echo 'ALERT - Root Shell Access on:' `date` `who` | mail -s "Alert: Root Access from `who | awk '{print $6}'`" [email protected]

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• Exclude all hidden directories in UNIX find

  - by xRickerlx

  I'm doing a word search using the following command: find . -exec grep -q [some_word] '{}' \; -print -o -name .svn -prune -o -name .ssh -prune -o -name .boneyard -o -name log -prune -prune -o -name tmp -prune Is it possible to use a regex to exclude all hidden directories? Note: The current command traverses the entire tree from the current location and exclude those being pruned. The exclusion needs to work for any hidden directory regardless off location.

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