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Cluster Server 7.4.2 Configuration and Upgrade Guide - Linux

Last Published: 2020-08-18

Product(s): InfoScale & Storage Foundation (7.4.2)

Platform: Linux

Enabling LLT ports in firewall

You can use any firewall tool to enable the network ports.

While enabling ports make sure that:

No other application is using the LLT consumable network ports (50000 to 50006).
These ports are enabled in security groups if you are installing InfoScale in cloud.

By default, LLT uses 50000 to 50001 port range for clustering and 50002 to 50006 for I/O shipping sockets.

Enabling ports using iptables

Ingress table:
iptables -A INPUT -p udp -m udp --dport 50000 -j ACCEPT
iptables -A INPUT -p udp -m udp --dport 50001 -j ACCEPT
iptables -A INPUT -p udp -m udp --dport 50002 -j ACCEPT
iptables -A INPUT -p udp -m udp --dport 50003 -j ACCEPT
iptables -A INPUT -p udp -m udp --dport 50004 -j ACCEPT
iptables -A INPUT -p udp -m udp --dport 50005 -j ACCEPT
iptables -A INPUT -p udp -m udp --dport 50006 -j ACCEPT

Egress table:
iptables -A OUTPUT -p udp -m udp --sport 50000 -j ACCEPT
iptables -A OUTPUT -p udp -m udp --sport 50001 -j ACCEPT
iptables -A OUTPUT -p udp -m udp --sport 50002 -j ACCEPT
iptables -A OUTPUT -p udp -m udp --sport 50003 -j ACCEPT
iptables -A OUTPUT -p udp -m udp --sport 50004 -j ACCEPT
iptables -A OUTPUT -p udp -m udp --sport 50005 -j ACCEPT
iptables -A OUTPUT -p udp -m udp --dport 50006 -j ACCEPT

Enable ports in the etc/llttab file

link eth1 udp - udp 50000 - 192.168.10.1 -
link eth2 udp - udp 50001 - 192.168.11.1 -

You can also use the following tunables while enabling ports.

Tunable	Description
set-udpports	Changes the port range to be used for I/O shipping if you do not want to use port range 50002 and onwards. Usage: set-udpports <initial_port_number> Example: set-udpports 60000 In this case, LLT uses the port 50000 and 50001 for clustering and 60000 and the subsequent port numbers for I/O shipping.
set-udpthreads	Specifies how many threads per socket needs to be created. Usage: set-udpthreads <number of threads per socket> Example: set-udpthreads 2
set-udpsockets	Specifies how many sockets per link needs to be created. Usage: set-udpsockets <number of sockets per link> Example: set-udpsockets 4

Tunable

Description

set-udpports

Changes the port range to be used for I/O shipping if you do not want to use port range 50002 and onwards.

Usage: set-udpports <initial_port_number>

Example: set-udpports 60000

In this case, LLT uses the port 50000 and 50001 for clustering and 60000 and the subsequent port numbers for I/O shipping.

set-udpthreads

Specifies how many threads per socket needs to be created.

Usage: set-udpthreads <number of threads per socket>

Example: set-udpthreads 2

set-udpsockets

Specifies how many sockets per link needs to be created.

Usage: set-udpsockets <number of sockets per link>

Example: set-udpsockets 4