Eli's questions

how many files can a server have open?

is it based on the ram/cpu?

/etc/security/limits.conf

*    soft     nproc       65536
*    hard     nproc       65536
*    soft     nofile      65536
*    hard     nofile      65536
root soft     nproc       65536
root hard     nproc       65536
root soft     nofile      65536
root hard     nofile      65536

i used this to increase the limits, but i'm wondering if that number 65536 can be made larger?

Also, does * sfot nproc also cover root soft nproc? or does it need to be spcified for root and *?

I ran a sed command recently and I mistyped the command (yes it happens).

So now i have directory and file names that look like 'Call of Duty'. How can I recursively go back and rename all files and directories to remove the '?

this is the command i ran find . -type f -name "*.css" -exec sed -i'' -e 's|http://cdn|//cdn|g' {} +

I have scoured all over dell.com for answers and nothing that really explained/taught me how to do what I want.

I have 1 PowerConnect 8131 Layer 3 switch.

My router is connected to port 1 and it gives my VLAN1 (default vlan) the IP of:

192.168.86.1 (gateway)

I need to create 3 VLANs,

1 - Management (tagged)

2 - Data (tagged)

3 - Access (untagged)

I have been able to learn/figure out how to make VLANs

config#en config#config config#vlan 10,20,30

I have assigned ports 3-6,9-12,17-20 to VLAN 10, 7,13,21 to VLAN 20, and 8,14,22 to VLAN 30

From here I am confused, what IP address would/should I give to each VLAN and how would I let each VLAN send traffic thru each other, as well as be able to connect to the internet.

I have reset the switch so many times just to start from scratch redoing all the steps hoping I might have missed or misread some tutorial. please help.

I'm new to HAproxy and have been following guides to get me started. I think I got the set up I need but when I try to load my web site domain I get a

503 Service Unavailable

No server is available to handle this request.

this is my HAproxy set up:

global
    log 127.0.0.1   local0
    log 127.0.0.1   local1 notice
    debug
    stats timeout 30s
    maxconn 4096

defaults
    log global
    option httplog
    option dontlognull
    mode http
    timeout connect 5000
    timeout client  50000
    timeout server  50000

frontend http-in
    bind *:80
    acl app0 hdr(host) -i mywebsite.com

    use_backend srvs_app0 if app0


backend srvs_app0
    mode http
    balance roundrobin
    option forwardfor
    option httpchk HEAD / HTTP/1.1\r\nHost:localhost
    server host0 10.10.104.41:1038 check


listen stats *:1936
    stats enable
    stats uri /
    stats hide-version
    stats auth someuser:password

I'm not sure what I'm looking for, or where I can start to look for a possible problem.

I'm looking for help in either pointing me on the right direction or maybe even point out a solution.

I been trying to find out why when I upload a brand new wordpress install using ProFTPd 1.3.5b the files get injected with extra characters that aren't part of the file.

It only happens to /wp-includes/functions.php from what I can see

these are the injections i have caught so far

line ~569:

foreach ( $pung as $link_test ) {
        if ( ! in_array( $link_test, $post_links_temp ) ) { // link no longer in post
            $mids = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE %s", $post_ID, $wpdb->esc_like( $link_test ) . '%') );
t // <--- this "t" is added
            foreach ( $mids as $mid )
                delete_metadata_by_mid( 'post', $mid );
        }
    }

line ~1780

function win_is_writable( $path ) {

    if ( $path[strlen( $path ) - 1] == '/' ) { // if it looks like a directory, check a random file within the directory
        return win_is_writable( $path . uniqid( mt_rand() ) . '.tmp');
    } elseif ( is_dir( $path ) ) { // If it's a directory (and not a file) check a random file within the directory
        return win_is_writable( $path . '/' . uniqid( mt_rand() ) . '.tmp' );
    }
    // check tmp file for read/write capabilities
    $should_delete_tmp_file = !file_exists( $path );
    $f = @fopen( $path, 'a' );
    if ( $f === false )
        return false;
    fclose( $f );
    if ( $should_delete_tmp_file )
        unlink( $path );
    return true;
}
e // <-- this "e" is added

line ~2677

        .button:active {
            background: #eee;
            border-color: #999;
            -webkit-box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );
            box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );
            -webkit-transform: translateY(1px);
            -ms-transform: translateY(1px);
            transform: translateY(1px);
        }
        o /* <-- this "o" is added */

        <?php
        if ( 'rtl' == $text_direction ) {
            echo 'body { font-family: Tahoma, Arial; }';
        }

line ~3332

function wp_list_filter( $list, $args = array(), $operator = 'AND' ) {
    if ( ! is_array( $list ) )
        return array();

    if ( empty( $args ) )
        return $list;

    $operator = strtoupper( $operator );
    $count = count( $args );
    o // <-- this "o" is added
    $filtered = array();

    foreach ( $list as $key => $obj ) {
        $to_match = (array) $obj;

        $matched = 0;
        foreach ( $args as $m_key => $m_value ) {
            if ( array_key_exists( $m_key, $to_match ) && $m_value == $to_match[ $m_key ] )
                $matched++;
        }

        if ( ( 'AND' == $operator && $matched == $count )
            || ( 'OR' == $operator && $matched > 0 )
            || ( 'NOT' == $operator && 0 == $matched ) ) {
            $filtered[$key] = $obj;
        }
    }

    return $filtered;
}

line ~3719

function _deprecated_argument( $function, $version, $message = null ) {
    i // <-- this "i" is added

    /**
     * Fires when a deprecated argument is called.
     *
     * @since 3.0.0
     *
     * @param string $function The function that was called.
     * @param string $message  A message regarding the change.
     * @param string $version  The version of WordPress that deprecated the argument used.
     */
    do_action( 'deprecated_argument_run', $function, $message, $version );

    /**
     * Filter whether to trigger an error for deprecated arguments.
     *
     * @since 3.0.0
     *
     * @param bool $trigger Whether to trigger the error for deprecated arguments. Default true.
     */
    if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) {
        if ( function_exists( '__' ) ) {
            if ( ! is_null( $message ) )
                trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s'), $function, $version, $message ) );
            else
                trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
        } else {
            if ( ! is_null( $message ) )
                trigger_error( sprintf( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s', $function, $version, $message ) );
            else
                trigger_error( sprintf( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.', $function, $version ) );
        }
    }
}

I'm connected via port 21, regular ftp (not sftp or tls). Also not using passive mode.

I am trying to install Gluster 3.7.5 on Amazon Linux AMI but cannot get passed error

Error: Package: glusterfs-libs-3.7.5-1.el7.x86_64 (glusterfs-epel)
           Requires: rsyslog-mmjsonparse
Error: Package: glusterfs-3.7.5-1.el7.x86_64 (glusterfs-epel)
           Requires: systemd-units

I cannot find the rpm or needed libraries to get rsyslog-mmjsonparse installed.

Does anyone know how to get passed this?

I just purchased an EV SSL and now need some guidance on how to install it.

I followed the step provided to me by Geotrust, but I can't figure out where to toss in my Proxy server into the mix.

The domain points to my proxy server, which then well proxy's in the content from my second server.

In my proxy server I have this in my httpd.conf

<VirtualHost *:80>
    ProxyPreserveHost On
    ProxyPass / http://xx.xx.xxx.xx:80/ connectiontimeout=300 timeout=300
    ProxyPassReverse / http://xx.xx.xxx.xx:80/
</VirtualHost *:80>

in my web server I have

ServerName domain.com
ServerAlias www.domain.com

DocumentRoot "/var/www/html"

<Directory "/var/www/html">
    AllowOverride All
        Order allow,deny
        Allow from all
</Directory>

I don't know where to insert this bit of code

SSLEngine on
SSLCertificateFile /path/to/public_ee.crt
SSLCertificateKeyFile /path/to/private.key
SSLCertificateChainFile /path/to/EV_intermediate.crt

If I add this to my webserver, then I get a "Bad Request" error from the proxy, but I can still access the url via https

Any clues on how to properly configure this type of setup?

Thank you for your help

how can I tell incrontab to run this command when there has been any modification done under the /web directory?

/web IN_CREATE,IN_DELETE,IN_MODIFY /bin/echo "this is a test..."

Been trying to run a cron but keep getting permission died error in my /var/spool/mail/root

"/bin/sh: /disk1/archives/backup.website.cron: Permission denied"

This is my ls -hal for the directory my cron jobs are in

drwxr-xr-x 4 root root 4.0K Feb  6 04:22 .
drwxr-xr-x 6 root root 4.0K Feb  5 08:14 ..
-rwxr-xr-x 1 root root  105 Feb  6 04:22 backup
-rw-r--r-- 1 root root  102 Feb  5 08:34 backup.database.cron
-rw-r--r-- 1 root root   75 Feb  5 08:33 backup.website.cron
drwxr-xr-x 2 root root 4.0K Feb  5 08:35 databases

I have backup set to chmod +x

The backup file looks like this

* * * * *  root /disk1/archives/backup.website.cron
30 * * * * root /disk1/archives/backup.database.cron

I ran the cron with

crontab /disk/1/archives/backup

I can see that my cron jobs are set up to run because when I do crontab -l I get

[root@web archives]# crontab -l
* * * * * /disk1/archives/backup.website.cron
30 * * * * /disk1/archives/backup.database.cron

backup.website.cron looks like

tar -zcvf /disk1/archives/websites/`date +%Y-%m-%d_%I:%M:%S%p`.tar.gz /web

while backup.website.cron looks like

mysqldump --opt --all-databases | gzip > /disk1/archives/databases/`date +%Y-%m-%d_%I:%M:%S%p`.sql.gz

am i missing a permission change somewhere?

am i running the correct scripts thru the crontab?

I want to make a cron job that creates a tar of my web directory.

I have this job in place

* * * * * tar -zcvfp /disk1/archives/websites/`date +%Y-%m-%d_%I-%M-%S-%p`/`date +%Y-%m-%d_%I:%M:%S:%p`.tar.gz /web

this job SHOULD (but doesn't) create a tar file to my /disk1... directory. so I'm stumped on that one.

another thing that has been on my mind is, is it possible to make all backup tar file get dumped into a date +%Y-%m-%d and have all files that were created on that same day be placed there?

So an output would look like

/disk1/archives/websites/2012-02-05/2012-02-05_5:25:04.tar.gz

I have made this job run every minute for test purposes.

Is there anything wrong with my syntax?

how can i mount a hard drive on my mac to my remote cent os server?

Would I need to set up an FTP on my mac?

can it be done with with cifs or nfs?

I'm sorry for sounding vague but i really have no idea as to how to approach this. I know how to mount drives from one server to another using (private)IP's vau NFS but not really sure how to do it using a remote machine with a different OS.

how can i clone a server onto a remote drive?

I would like to make an identical backup of my CentOS 6 64bit server onto a remote hdd.

I am going to be installing a raid card into the sever causing all data to be erased. I want to be able to backup the server then clone back the data as if the server was never touched.

How can i do this?

I am on a mac and would like to clone the server onto a backup drive, then restore the clone image.

My server has 2 ssds, both 50gb each. in case that information is useful. 1 has the server, the second is empty.

I just finished doing a LAMP install on a CentOS 6 x64 install.

I have had LAMP server before this one, and I would always ssh into the server as root but i'm trying to make a production environment and i would like to make a user that I can log in with that isn't root or has root privileges.

I noticed that in some of my PHP scripts that create files using the fopen() functions that it sets the user and group to apache.

What would i need to do is I wanted to have a user called optik and a group called nerv (just examples). Also when PHP makes new files and or folders how can i get it so that it too uses that same user and groups?

At this point I just have a fresh LAMP install from SoftLayer and nothing else other than MySQL server running on it as well. (no yum updates or anything of the sort yet)

I am using a cron job to reload my httpd service after a subdomain is created. I have the problem that when the reload happens the page that registers the user throws a server error.

I was wondering if I could go around this by having another cron task.

So my logic would be:

httpd reload after a .conf file is created then take the user back to the DocumentRoot of the main page.

So in usage it would be:

a user registers, then is automatically taken back to domain.com

I have a LAMP server running on CentOS 5.5 64-bit and would like to reload my httpd service after making new subdomains.

I have 3 servers mounted onto my web server, and depending on what resources each mounted server has i create new user accounts and add them to the available server.

for instance when a user registers and needs 5gb of space then my PHP scripts searches through my mounted servers to see if they have an allocation slot open for a new user. if not then it moves to the next server and so on. So depending on the server they end up in i create a new conf files to reflect that server as their DocumentRoot

the issue is that i need to reload the httpd service manually after each subdomain is created for a particular user.

I am trying to find a way to have the httpd service reloaded as soon as a user registers.

currently i am trying this:

system("/bin/echo '/sbin/service httpd reload > /dev/null 2>&1' | /usr/bin/at now");

my httpd service is located at /etc/init.d/httpd

i want to make a somewhat dynamic subdomain thing for my members.

I looked into PHP, which didn't really meet all my requirements.

alos htaccess wasn't right for me either.

the only problem is that i need "real" subdomain but because each subomain can point to a diff DocumentRoot then I need PHP to open up a new .conf file and append the VirtualHost information.

I was thinking that since in PHP there is the RecursiveDirectoryIterator() which can used to include files like this

$cf = new RecursiveDirectoryIterator(dirname(__DIR__) . DS . "configuration");


    foreach (new RecursiveIteratorIterator($di) as $filename => $file) {
        if ($di->getFilename() != "." && $di->getFilename() != ".." && $di->getFilename() != "include.php") {
            require_once $filename;
        }
    }

is there a similar thing I can include in the httpd.conf file to include all the .conf files say in a folder called /myConfs

this way I can use PHP to make a new .conf file and inject the custom DocumentRoots and save it to /myConfs/user1.conf

I just installed Pure-FTPD to give it a test run, I added a group and a user

groupadd test1

useradd -g test1 -d /var/www/html -s /etc testuser

then tried to run the server using

/usr/sbin/pure-ftpd -S <ip>,21 -c 30 -C 1 -l puredb:/etc/pureftpd.pdb -x -E -j -R

and receive this error

Unable to start a standalone server: Address already in use

I took a look at what was running that may already be using port 21

grep ftp /etc/services

and see this

21 is registered to ftp, but also used by fsp

ftp 21/tcp

ftp 21/udp fsp fspd

then i took a closer look at port 21

lsof -i :21

and got this

COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME

pure-ftpd 3709 root 4u IPv4 12920 0t0 TCP *:ftp (LISTEN)

pure-ftpd 3709 root 5u IPv6 12922 0t0 TCP *:ftp (LISTEN)

any clues?

Say I have http://www.foo.bar

and I let my registered members have their own subdomain like http://fred.foo.bar

what are the potential dangers there?

Lets say that each user can upload and download files via FTP to their subdomain document root.

assuming that they have the ability to upload PHP and javascript files, is there a way to lock these scripts to only their subdomain? will other members be in danger? will the server be in danger?

I'm trying to figure out what the ideal set up would for a few servers.

1) Website
1) Mail server
1) Database server
1) file server

In this given scenario, say there is a site that will offer each user 5gb of file storage space along with an e-mail and a dedicated database.

From my somewhat limited understanding of how servers work I concluded that having 1 server per feature would be the best bet so that if one goes off line the other data isn't affected.

What would be a smart and efficient way to handle this?

This is my understanding

1) The website is hosted from 1 main server that will handle user registrations and serve small files. For this I think a simple server set up is more than enough right?

2) For a mail server, to handle the equal amount of registered users., will primarily handle the e-mails and e-mail attachments

3) The database would not be capped in size and only store each clients contacts and profile settings, so every time the user logs in the settings will be pulled from the database. I plan on loading the settings into $_SESSIONs so that the database won't be queried everytime the page reloads etc. But the Contact informations will be queried from the server on every action.

4) the file server will just serve files nothing to cpu or memory intensive

As far as software goes, I was leaning towards CentOs 5.5 and Plesk 10.2 to handle the website server and MySQL 5 for the database servers, maybe Atmail for the mail server. What is recommended on the software side to be loaded on each of those servers?

I have no experience in this field, but i'm gaining some everyday. I need to be intelligently informed so that i atleast know what i'm dealing with in the event that I hire someone to handle the setups for me.

In your experience guys, what would be an ideal set up with both hardware and software configurations?

Also, take in account an example user base of 5,000 clients. So each with 5gb of webspace, email, and own database.

I'm trying to set up a service where clients can sign up and a subdomain will be automatically made for them as part of their account.

After looking high and low on google i came onto an apache page detialing Mass Virtualhost and similar solutions.

My problem is that I can't make heads or tails from the examples and i'm not sure how it all works.

The end result i want www to be always pointing to /var/www/vhosts/domain.com/httpdocs while *.domain.com always points to /var/www/vhosts/domain.com/httpdocs/members

is this possible?