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--- lwc:mqtt [2021/09/20 19:30] – John Harrison
+++ lwc:mqtt [2021/10/20 09:31] (current) – John Harrison
@@ Line 31: / Line 31: @@
 erase all retained messages: mosquitto_sub -i <client_id> -p <port> -h <host> --retained-only -t "#" -v | while read line; do let "x=x+1"; echo $x; mosquitto_pub -i <client_id> -p <port> -h <host> -t "${line% *}" -r -n; done'
 \\
 ===== HA Proxy: =====
@@ Line 37: / Line 36: @@
 ==== Configuring for high # of connections (tested on 16.04) ====
-edit /etc/sysctl.conf and add the following lines (increase open file limit and decrease memory use of TCP buffers:
+edit ''/etc/sysctl.conf'' and add the following lines (increase open file limit and decrease memory use of TCP buffers:
-  * fs.file-max = 10000000
+<code>
-  * fs.nr_open = 10000000
+fs.file-max = 10000000
-  * net.ipv4.tcp_mem = 786432 1697152 1945728
+fs.nr_open = 10000000
-  * net.ipv4.tcp_rmem = 4096 4096 16777216
+net.ipv4.tcp_mem = 786432 1697152 1945728
-  * net.ipv4.tcp_wmem = 4096 4096 16777216
+net.ipv4.tcp_rmem = 4096 4096 16777216
-  * net.ipv4.ip_local_port_range = 1000 65535
+net.ipv4.tcp_wmem = 4096 4096 16777216
+net.ipv4.ip_local_port_range = 15000 65535
+</code>
 edit /etc/security/limits.conf:
@@ Line 53: / Line 54: @@
 </code>
-add to /etc/haproxy/haproxy.conf:
+add to ''/etc/haproxy/haproxy.conf:'' in ''defaults:''
-In Global:
+<code>
-  * maxconn 2000000
+maxconn 2000000
-  *
+timeout connect 3000000 # necessary?
-  *        maxconn 2000000
+timeout client 66000000 # necessary?
-  *        timeout connect 3000000 # necessary?
+timeout server 66000000 # necessary?
-  *        timeout client 66000000 # necessary?
+</code>
-  *        timeout server 66000000 # necessary?
+check:
+<code>
+pidof haproxy
+cat /proc/630/limits | grep 'open files'
+</code>
-In
+[[https://ma.ttias.be/linux-increase-ip_local_port_range-tcp-port-range/|increase ip_local_port_range]]
-References\\
+=== References ===
   * [[http://rexpie.github.io/2015/08/26/loadbalancing-with-haproxy.html|Load balancing with HA proxy]]