Resetting SSH port to 22 via WHM

If you are unable to connect to a cPanel server over SSH:

* because of a forgotten custom SSH port
* having restarted sshd service after making any wrong settings in sshd_config file

- you can still connect to that server via safe sshd service provided by cPanel over port 22 by following the steps below:

* Log in to WHM as root user and browse to the following URL.

http://x.x.x.x:2086/scripts2/autofixer (Replace x.x.x.x with the server IP address)

* You will be presented with an AutoFixer window. Enter
*"safesshrestart"* in the given text field (Enter script name) and click Submit.

It will kill any already running sshd processes and start a new one listening on the default 22 port using the configuration file at /var/cpanel/safe_sshd.

* Connect to the server over SSH via port 22.

* Note down the custom port set in /etc/ssh/sshd_config or fix any errors in it. Once you are ready, restart sshd.

* You should then be able to connect to the regular ssh service running on your custom port if set any.

You can find more information regarding autofixer feature at http://httpupdate.cpanel.net/autofixer/

cPanel: Fantastico is not installed at the default location

If you get the following error when accessing Fantastico (user login):

Quote:

Fantastico is not installed at the default location /usr/local/cpanel/3rdparty/fantastico. Either move the Fantastico directory from it's current location to /usr/local/cpanel/3rdparty/fantastico OR enable ioncube loaders in WHM -> Tweak settings.

To resolve this issue, you can change the option to enable ioncube loaders in WHM > Tweak Settings and then run:

Code:

/scripts/makecpphp

Enabling Virtuozzo with offline-management

Check the following url to access both 8443 plesk and 4643 VZ with offline management

http://forum.parallels.com/showthread.php?t=74654

# vzctl set ${VEID} --save --offline_management yes --offline_service vzpp

IPTABLES Rules

1. View / List All iptables Rules

When you want to check what rules are in iptables, use –list option as shown below.

# iptables --list

Example 1: Iptables list output showing no rules

# iptables --list
Chain INPUT (policy ACCEPT)
target     prot opt source               destination        

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination        

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

The above output shows chain headers. As you see, there are no rules in it.

Example 2: Iptables list output showing some rules

When there is a rule to disable ping reply, you have the iptables list output as like the following. You can see the rule in the OUTPUT chain.

# iptables --list
Chain INPUT (policy ACCEPT)
target     prot opt source               destination        

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination        

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
DROP       icmp --  anywhere             anywhere            icmp echo-request

2. Delete iptables Rules using flush option

When you want to delete all the rules, use the flush option as shown below.

# iptables --flush

After doing this, your iptables will become empty, and the “iptables –list” output will look like what is shown in the example 1.

You can also delete (flush) a particular iptable chain by giving the chain name as an argument as shown below.

# iptables --flush OUTPUT

Mysql Database showing 0MB disk usage

If your Mysql DB are showing 0MB disk usage in cPanel then do the following things.

vi /var/cpanel/cpanel.config

find "disk_usage_include_sqldbs"

change the value from 0 to 1

and run
#/scripts/update_db_cache

Issue should be fixed :)

Regards
Ninad

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Increase inodes from virtuozzo node

vzctl set VE_ID --diskinodes BARRIER:LIMIT --save

Where VE_ID is your VPS ID and BARRIER:LIMIT will be the limit of your inodes.


Regards,
Ninad