T5261: Add AWS load-balancing tunnel handler

Add AWS load-balancing tunnel handler
https://aws.amazon.com/blogs/networking-and-content-delivery/how-to-integrate-linux-instances-with-aws-gateway-load-balancer/

set service aws glb script on-create '/config/scripts/tmp.sh'
set service aws glb script on-destroy '/config/scripts/tmp.sh'
set service aws glb status format 'simple'
set service aws glb status port '8282'
set service aws glb threads tunnel '4'
set service aws glb threads tunnel-affinity '1-2'
set service aws glb threads udp '4'
set service aws glb threads udp-affinity '0-3'

1 files changed, 36 insertions, 0 deletions

diff --git a/data/templates/aws/override_aws_gwlbtun.conf.j2 b/data/templates/aws/override_aws_gwlbtun.conf.j2
new file mode 100644
index 000000000..4c566d852
--- /dev/null
+++ b/data/templates/aws/override_aws_gwlbtun.conf.j2
@@ -0,0 +1,36 @@
+{% set args = [] %}
+{% if script.on_create is vyos_defined %}
+{%     set _ = args.append("-c " + script.on_create) %}
+{% endif %}
+{% if script.on_destroy is vyos_defined %}
+{%     set _ = args.append("-r " + script.on_destroy) %}
+{% endif %}
+
+{% if status.port is vyos_defined %}
+{%     set _ = args.append("-p " + status.port) %}
+{% endif %}
+
+{% if threads.tunnel is vyos_defined %}
+{%     set _ = args.append("--tunthreads " + threads.tunnel) %}
+{% endif %}
+{% if threads.tunnel_affinity is vyos_defined %}
+{%     set _ = args.append("--tunaffinity " + threads.tunnel_affinity) %}
+{% endif %}
+
+{% if threads.udp is vyos_defined %}
+{%     set _ = args.append("--udpthreads " + threads.udp) %}
+{% endif %}
+{% if threads.udp_affinity is vyos_defined %}
+{%     set _ = args.append("--udpaffinity " + threads.udp_affinity) %}
+{% endif %}
+
+[Unit]
+StartLimitIntervalSec=0
+After=vyos-router.service
+
+[Service]
+EnvironmentFile=
+ExecStart=/usr/bin/gwlbtun {{ args | join(' ') }}
+CapabilityBoundingSet=CAP_NET_ADMIN
+Restart=always
+RestartSec=10