alicloud-network-alb

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Manage and troubleshoot Alibaba Cloud ALB (Application Load Balancer). List/inspect/create/update instances, listeners, server groups, rules, certificates, ACLs, security policies, and health check status.

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Sourcecinience/alicloud-skills

Added on2026-03-04

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Category: service

Application Load Balancer (ALB)

Validation

bash

mkdir -p output/alicloud-network-alb
for f in skills/network/slb/alicloud-network-alb/scripts/*.py; do
  python3 -m py_compile "$f"
done
echo "py_compile_ok" > output/alicloud-network-alb/validate.txt

Pass criteria: command exits 0 and

output/alicloud-network-alb/validate.txt

is generated.

Prerequisites

bash

pip install alibabacloud_alb20200616 alibabacloud_tea_openapi alibabacloud_credentials

AccessKey priority

Environment variables:

ALICLOUD_ACCESS_KEY_ID

ALICLOUD_ACCESS_KEY_SECRET

Also supported:

ALIBABA_CLOUD_ACCESS_KEY_ID

ALIBABA_CLOUD_ACCESS_KEY_SECRET

Optional STS token:
```
ALICLOUD_SECURITY_TOKEN
```
Shared config file:
```
~/.alibabacloud/credentials
```

Scripts

All scripts support

--output <file>

to write results to file.

Load Balancer Instances

List instances —

scripts/list_instances.py

bash

python3 scripts/list_instances.py --region cn-hangzhou
python3 scripts/list_instances.py --region cn-hangzhou --vpc-id vpc-xxx
python3 scripts/list_instances.py --region cn-hangzhou --address-type Internet --status Active
python3 scripts/list_instances.py --region cn-hangzhou --lb-ids alb-aaa alb-bbb --json

Instance status (tree overview / full JSON) —

scripts/get_instance_status.py

bash

# Tree overview: zones → listeners → rules
python3 scripts/get_instance_status.py --region cn-hangzhou --lb-id alb-xxx

# Full API response as JSON
python3 scripts/get_instance_status.py --region cn-hangzhou --lb-id alb-xxx --view detail

Create ALB instance —

scripts/create_load_balancer.py

bash

# Internet-facing ALB in two zones
python3 scripts/create_load_balancer.py --region cn-hangzhou --name my-alb \
    --vpc-id vpc-xxx --address-type Internet \
    --zone cn-hangzhou-h:vsw-aaa --zone cn-hangzhou-i:vsw-bbb

# Internal ALB with deletion protection
python3 scripts/create_load_balancer.py --region cn-hangzhou --name my-alb \
    --vpc-id vpc-xxx --address-type Intranet --deletion-protection \
    --zone cn-hangzhou-h:vsw-aaa --zone cn-hangzhou-i:vsw-bbb

Delete ALB instance —

scripts/delete_load_balancer.py

bash

python3 scripts/delete_load_balancer.py --region cn-hangzhou --lb-id alb-xxx
python3 scripts/delete_load_balancer.py --region cn-hangzhou --lb-id alb-xxx --yes  # skip confirm

Deletion protection —

scripts/deletion_protection.py

bash

python3 scripts/deletion_protection.py --region cn-hangzhou --resource-id alb-xxx --enable
python3 scripts/deletion_protection.py --region cn-hangzhou --resource-id alb-xxx --disable

Listeners

List listeners —

scripts/list_listeners.py

bash

python3 scripts/list_listeners.py --region cn-hangzhou --lb-id alb-xxx
python3 scripts/list_listeners.py --region cn-hangzhou --lb-id alb-xxx --json

Get listener details (certificates, ACL, config) —

scripts/get_listener_attribute.py

bash

python3 scripts/get_listener_attribute.py --region cn-hangzhou --listener-id lsn-xxx

Create listener —

scripts/create_listener.py

bash

# HTTP listener forwarding to server group
python3 scripts/create_listener.py --region cn-hangzhou --lb-id alb-xxx \
    --protocol HTTP --port 80 --action-type ForwardGroup \
    --forward-server-groups sgp-xxx

# HTTPS listener with certificate
python3 scripts/create_listener.py --region cn-hangzhou --lb-id alb-xxx \
    --protocol HTTPS --port 443 --action-type ForwardGroup \
    --forward-server-groups sgp-xxx --certificate-ids cert-xxx

# HTTP to HTTPS redirect
python3 scripts/create_listener.py --region cn-hangzhou --lb-id alb-xxx \
    --protocol HTTP --port 80 --action-type Redirect \
    --redirect-protocol HTTPS --redirect-port 443

# Dry run
python3 scripts/create_listener.py --region cn-hangzhou --lb-id alb-xxx \
    --protocol HTTP --port 80 --action-type ForwardGroup \
    --forward-server-groups sgp-xxx --dry-run

Update listener —

scripts/update_listener.py

bash

# Update description
python3 scripts/update_listener.py --region cn-hangzhou --listener-id lsn-xxx \
    --description "Production HTTP listener"

# Change default forwarding target
python3 scripts/update_listener.py --region cn-hangzhou --listener-id lsn-xxx \
    --forward-server-groups sgp-new

# Update timeouts and security policy
python3 scripts/update_listener.py --region cn-hangzhou --listener-id lsn-xxx \
    --idle-timeout 60 --request-timeout 120 --security-policy-id tls_cipher_policy_1_2

# Enable HTTP/2 and gzip
python3 scripts/update_listener.py --region cn-hangzhou --listener-id lsn-xxx \
    --http2-enabled true --gzip-enabled true

Start / Stop listener —

scripts/start_listener.py

scripts/stop_listener.py

bash

python3 scripts/start_listener.py --region cn-hangzhou --listener-id lsn-xxx
python3 scripts/stop_listener.py --region cn-hangzhou --listener-id lsn-xxx

Delete listener —

scripts/delete_listener.py

bash

python3 scripts/delete_listener.py --region cn-hangzhou --listener-id lsn-xxx
python3 scripts/delete_listener.py --region cn-hangzhou --listener-id lsn-xxx --yes  # skip confirm

Server Groups

List server groups —

scripts/list_server_groups.py

bash

python3 scripts/list_server_groups.py --region cn-hangzhou
python3 scripts/list_server_groups.py --region cn-hangzhou --vpc-id vpc-xxx
python3 scripts/list_server_groups.py --region cn-hangzhou --sg-ids sgp-aaa sgp-bbb

List backend servers in a server group —

scripts/list_server_group_servers.py

bash

python3 scripts/list_server_group_servers.py --region cn-hangzhou --sg-id sgp-xxx

Create server group —

scripts/create_server_group.py

bash

# Basic HTTP server group
python3 scripts/create_server_group.py --region cn-hangzhou --name my-sg \
    --vpc-id vpc-xxx --protocol HTTP

# With health check customization
python3 scripts/create_server_group.py --region cn-hangzhou --name my-sg \
    --vpc-id vpc-xxx --protocol HTTP \
    --health-check-path /health --health-check-interval 10

# With sticky sessions
python3 scripts/create_server_group.py --region cn-hangzhou --name my-sg \
    --vpc-id vpc-xxx --protocol HTTP \
    --sticky-session-enabled --sticky-session-type Server --sticky-session-cookie SERVERID

# Dry run
python3 scripts/create_server_group.py --region cn-hangzhou --name my-sg \
    --vpc-id vpc-xxx --dry-run

Delete server group —

scripts/delete_server_group.py

bash

python3 scripts/delete_server_group.py --region cn-hangzhou --sg-id sgp-xxx
python3 scripts/delete_server_group.py --region cn-hangzhou --sg-id sgp-xxx --yes  # skip confirm

Add backend servers —

scripts/add_servers.py

bash

# Add ECS server (type:id:port[:weight[:description]])
python3 scripts/add_servers.py --region cn-hangzhou --sg-id sgp-xxx \
    --server ecs:i-xxx:8080

# Add multiple servers with weight
python3 scripts/add_servers.py --region cn-hangzhou --sg-id sgp-xxx \
    --server ecs:i-xxx:8080:100:web-1 \
    --server ecs:i-yyy:8080:50:web-2

# Add IP-based server (for Ip-type server group)
python3 scripts/add_servers.py --region cn-hangzhou --sg-id sgp-xxx \
    --server ip:10.0.1.100:8080

Remove backend servers —

scripts/remove_servers.py

bash

# Remove server (type:id:port)
python3 scripts/remove_servers.py --region cn-hangzhou --sg-id sgp-xxx \
    --server ecs:i-xxx:8080

# Remove multiple servers
python3 scripts/remove_servers.py --region cn-hangzhou --sg-id sgp-xxx \
    --server ecs:i-xxx:8080 --server ecs:i-yyy:8080

Forwarding Rules

List rules —

scripts/list_rules.py

bash

# By load balancer
python3 scripts/list_rules.py --region cn-hangzhou --lb-id alb-xxx

# By listener
python3 scripts/list_rules.py --region cn-hangzhou --listener-id lsn-xxx

Create forwarding rule —

scripts/create_rule.py

bash

# Block DELETE method with 405 response
python3 scripts/create_rule.py --region cn-hangzhou --listener-id lsn-xxx \
    --name "block-delete" --priority 10 \
    --condition-method DELETE \
    --action-fixed-response "405 Method Not Allowed"

# Host-based routing to server group
python3 scripts/create_rule.py --region cn-hangzhou --listener-id lsn-xxx \
    --name "api-route" --priority 20 \
    --condition-host "api.example.com" \
    --action-forward-to sgp-xxx

# Path-based routing
python3 scripts/create_rule.py --region cn-hangzhou --listener-id lsn-xxx \
    --name "api-v1-route" --priority 30 \
    --condition-host "api.example.com" --condition-path "/v1/*" \
    --action-forward-to sgp-xxx

# HTTP to HTTPS redirect
python3 scripts/create_rule.py --region cn-hangzhou --listener-id lsn-xxx \
    --name "force-https" --priority 5 \
    --action-redirect "https 443"

Update forwarding rule —

scripts/update_rule.py

bash

# Update rule name and priority
python3 scripts/update_rule.py --region cn-hangzhou --rule-id rule-xxx \
    --name "new-name" --priority 50

# Change forwarding target
python3 scripts/update_rule.py --region cn-hangzhou --rule-id rule-xxx \
    --action-forward-to sgp-new

# Update conditions and actions together
python3 scripts/update_rule.py --region cn-hangzhou --rule-id rule-xxx \
    --condition-host "new.example.com" \
    --action-forward-to sgp-new

Delete forwarding rule —

scripts/delete_rule.py

bash

python3 scripts/delete_rule.py --region cn-hangzhou --rule-id rule-xxx
python3 scripts/delete_rule.py --region cn-hangzhou --rule-id rule-xxx --yes  # skip confirm

Health Check

Check health status —

scripts/check_health_status.py

bash

# All listeners
python3 scripts/check_health_status.py --region cn-hangzhou --lb-id alb-xxx

# Specific listener
python3 scripts/check_health_status.py --region cn-hangzhou --lb-id alb-xxx --listener-id lsn-xxx

# JSON output (includes rule-level health status)
python3 scripts/check_health_status.py --region cn-hangzhou --lb-id alb-xxx --json

Certificates

List listener certificates —

scripts/list_listener_certificates.py

bash

python3 scripts/list_listener_certificates.py --region cn-hangzhou --listener-id lsn-xxx

Security Policies

List security policies —

scripts/list_security_policies.py

bash

# Custom policies only
python3 scripts/list_security_policies.py --region cn-hangzhou

# Include system predefined policies
python3 scripts/list_security_policies.py --region cn-hangzhou --system

Access Control (ACL)

List ACLs —

scripts/list_acls.py

bash

python3 scripts/list_acls.py --region cn-hangzhou
python3 scripts/list_acls.py --region cn-hangzhou --acl-ids acl-aaa acl-bbb

List ACL entries —

scripts/list_acl_entries.py

bash

python3 scripts/list_acl_entries.py --region cn-hangzhou --acl-id acl-xxx

Async Job Polling

Most ALB write operations (create/update/delete listener, rule, ALB instance) return a

job_id

. Use

wait_for_job.py

to poll until the job completes.

Wait for async job —

scripts/wait_for_job.py

bash

# Wait for a job (default 120s timeout)
python3 scripts/wait_for_job.py --region cn-hangzhou --job-id 606f647c-xxxx-xxxx

# Custom timeout and interval
python3 scripts/wait_for_job.py --region cn-hangzhou --job-id xxx --timeout 300 --interval 3

# JSON output
python3 scripts/wait_for_job.py --region cn-hangzhou --job-id xxx --json

# Write result to file
python3 scripts/wait_for_job.py --region cn-hangzhou --job-id xxx --json --output result.json

Job statuses:

Processing

→

Succeeded

Failed

. Exit code 0 on success, 1 on failure/timeout.

Write Operations Cookbook

Step-by-step guide to build a complete ALB from scratch. Full dependency graph:

references/resource-dependencies.md

Prerequisites: VPC, VSwitches, backend instances (ECS/ENI/ECI), and SSL certificates (for HTTPS) must already exist.

Step 1: Create independent resources (parallelizable)

1a. Create Server Group → yields

ServerGroupId

python

resp = client.create_server_group(alb_models.CreateServerGroupRequest(
    server_group_name="my-sg",
    vpc_id="vpc-xxx",
    protocol="HTTP",
    scheduler="Wrr",
    health_check_config=alb_models.CreateServerGroupRequestHealthCheckConfig(
        health_check_enabled=True,
        health_check_path="/health",
        health_check_codes=["http_2xx", "http_3xx"],
    ),
))
server_group_id = resp.body.server_group_id

1b. Create ACL (if needed) → yields

AclId

python

resp = client.create_acl(alb_models.CreateAclRequest(acl_name="my-acl"))
acl_id = resp.body.acl_id

# Add IP entries
client.add_entries_to_acl(alb_models.AddEntriesToAclRequest(
    acl_id=acl_id,
    acl_entries=[
        alb_models.AddEntriesToAclRequestAclEntries(entry="10.0.0.0/8", description="internal"),
        alb_models.AddEntriesToAclRequestAclEntries(entry="203.0.113.1/32", description="office"),
    ],
))

Step 2: Add backends to Server Group

python

client.add_servers_to_server_group(alb_models.AddServersToServerGroupRequest(
    server_group_id=server_group_id,  # ← Step 1a
    servers=[alb_models.AddServersToServerGroupRequestServers(
        server_type="Ecs",
        server_id="i-xxx",
        port=8080,
        weight=100,
    )],
))

Step 3: Create ALB instance → yields

LoadBalancerId

python

resp = client.create_load_balancer(alb_models.CreateLoadBalancerRequest(
    load_balancer_name="my-alb",
    address_type="Internet",       # Internet | Intranet
    load_balancer_edition="Standard",  # Basic | Standard | StandardWithWaf
    vpc_id="vpc-xxx",
    load_balancer_billing_config=alb_models.CreateLoadBalancerRequestLoadBalancerBillingConfig(
        pay_type="PostPay",
    ),
    zone_mappings=[
        alb_models.CreateLoadBalancerRequestZoneMappings(zone_id="cn-hangzhou-h", v_switch_id="vsw-aaa"),
        alb_models.CreateLoadBalancerRequestZoneMappings(zone_id="cn-hangzhou-i", v_switch_id="vsw-bbb"),
    ],
))
load_balancer_id = resp.body.load_balancer_id
# ⚠️ Async operation — poll GetLoadBalancerAttribute until LoadBalancerStatus == "Active"

Step 4: Enable Access Log (optional)

python

client.enable_load_balancer_access_log(alb_models.EnableLoadBalancerAccessLogRequest(
    load_balancer_id=load_balancer_id,  # ← Step 3
    log_project="my-sls-project",
    log_store="alb-access-log",
))

Step 5: Create Listener → yields

ListenerId

python

# HTTPS Listener (for HTTP, omit the certificates parameter)
resp = client.create_listener(alb_models.CreateListenerRequest(
    load_balancer_id=load_balancer_id,  # ← Step 3
    listener_protocol="HTTPS",
    listener_port=443,
    default_actions=[alb_models.CreateListenerRequestDefaultActions(
        type="ForwardGroup",
        forward_group_config=alb_models.CreateListenerRequestDefaultActionsForwardGroupConfig(
            server_group_tuples=[alb_models.CreateListenerRequestDefaultActionsForwardGroupConfigServerGroupTuples(
                server_group_id=server_group_id,  # ← Step 1a
            )],
        ),
    )],
    certificates=[alb_models.CreateListenerRequestCertificates(certificate_id="cert-xxx")],
))
listener_id = resp.body.listener_id
# ⚠️ Async operation — poll GetListenerAttribute until ListenerStatus == "Running"

Step 6: Configure Listener sub-resources (parallelizable)

6a. Create Forwarding Rule

python

client.create_rule(alb_models.CreateRuleRequest(
    listener_id=listener_id,  # ← Step 5
    rule_name="api-route",
    priority=10,
    rule_conditions=[alb_models.CreateRuleRequestRuleConditions(
        type="Host",
        host_config=alb_models.CreateRuleRequestRuleConditionsHostConfig(values=["api.example.com"]),
    )],
    rule_actions=[alb_models.CreateRuleRequestRuleActions(
        type="ForwardGroup",
        order=1,
        forward_group_config=alb_models.CreateRuleRequestRuleActionsForwardGroupConfig(
            server_group_tuples=[alb_models.CreateRuleRequestRuleActionsForwardGroupConfigServerGroupTuples(
                server_group_id=server_group_id,  # ← Step 1a (or another ServerGroup)
            )],
        ),
    )],
))

6b. Associate ACL

python

client.associate_acls_with_listener(alb_models.AssociateAclsWithListenerRequest(
    listener_id=listener_id,  # ← Step 5
    acl_type="White",          # White (whitelist) | Black (blacklist)
    acl_ids=[acl_id],          # ← Step 1b
))

Teardown (reverse order)

Must delete from leaf resources first. See

references/resource-dependencies.md

for the full deletion sequence.

python

# 1. Detach Listener sub-resources
client.dissociate_acls_from_listener(alb_models.DissociateAclsFromListenerRequest(
    listener_id="lsn-xxx", acl_ids=["acl-xxx"],
))
client.delete_rule(alb_models.DeleteRuleRequest(rule_id="rule-xxx"))

# 2. Delete Listener
client.delete_listener(alb_models.DeleteListenerRequest(listener_id="lsn-xxx"))

# 3. Delete ALB (disable deletion protection first)
client.disable_deletion_protection(alb_models.DisableDeletionProtectionRequest(resource_id="alb-xxx"))
client.delete_load_balancer(alb_models.DeleteLoadBalancerRequest(load_balancer_id="alb-xxx"))

# 4. Delete independent resources
client.remove_servers_from_server_group(alb_models.RemoveServersFromServerGroupRequest(
    server_group_id="sgp-xxx",
    servers=[alb_models.RemoveServersFromServerGroupRequestServers(
        server_type="Ecs", server_id="i-xxx", port=8080,
    )],
))
client.delete_server_group(alb_models.DeleteServerGroupRequest(server_group_id="sgp-xxx"))
client.delete_acl(alb_models.DeleteAclRequest(acl_id="acl-xxx"))

Common operations

python

# Start / Stop Listener
client.start_listener(alb_models.StartListenerRequest(listener_id="lsn-xxx"))
client.stop_listener(alb_models.StopListenerRequest(listener_id="lsn-xxx"))

# Disable Access Log
client.disable_load_balancer_access_log(alb_models.DisableLoadBalancerAccessLogRequest(
    load_balancer_id="alb-xxx",
))

Update operations

Update Listener (timeout, security policy, HTTP/2)

python

client.update_listener_attribute(alb_models.UpdateListenerAttributeRequest(
    listener_id="lsn-xxx",
    idle_timeout=60,                # seconds
    request_timeout=120,            # seconds
    security_policy_id="tls_cipher_policy_1_2",  # HTTPS only
    http_2enabled=True,             # HTTPS only
))

Update Server Group (health check, scheduler, sticky session)

python

client.update_server_group_attribute(alb_models.UpdateServerGroupAttributeRequest(
    server_group_id="sgp-xxx",
    scheduler="Wrr",                # Wrr | Wlc | Sch | Uch
    health_check_config=alb_models.UpdateServerGroupAttributeRequestHealthCheckConfig(
        health_check_enabled=True,
        health_check_path="/health",
        health_check_interval=5,
        healthy_threshold=3,
        unhealthy_threshold=3,
        health_check_codes=["http_2xx", "http_3xx"],
    ),
    sticky_session_config=alb_models.UpdateServerGroupAttributeRequestStickySessionConfig(
        sticky_session_enabled=True,
        sticky_session_type="Server",  # Server | Insert
        cookie="SERVERID",
    ),
))

Update backend server weight (blue-green, canary)

python

client.update_server_group_servers_attribute(alb_models.UpdateServerGroupServersAttributeRequest(
    server_group_id="sgp-xxx",
    servers=[alb_models.UpdateServerGroupServersAttributeRequestServers(
        server_type="Ecs",
        server_id="i-xxx",
        port=8080,
        weight=50,  # adjust weight for traffic shifting
    )],
))

Update forwarding rule (blue-green weight switching)

python

client.update_rule_attribute(alb_models.UpdateRuleAttributeRequest(
    rule_id="rule-xxx",
    rule_actions=[alb_models.UpdateRuleAttributeRequestRuleActions(
        type="ForwardGroup",
        order=1,
        forward_group_config=alb_models.UpdateRuleAttributeRequestRuleActionsForwardGroupConfig(
            server_group_tuples=[
                alb_models.UpdateRuleAttributeRequestRuleActionsForwardGroupConfigServerGroupTuples(
                    server_group_id="sgp-blue", weight=80,
                ),
                alb_models.UpdateRuleAttributeRequestRuleActionsForwardGroupConfigServerGroupTuples(
                    server_group_id="sgp-green", weight=20,
                ),
            ],
        ),
    )],
))

HTTP → HTTPS redirect pattern

python

# Create HTTP:80 listener that redirects all traffic to HTTPS:443
client.create_listener(alb_models.CreateListenerRequest(
    load_balancer_id=load_balancer_id,
    listener_protocol="HTTP",
    listener_port=80,
    default_actions=[alb_models.CreateListenerRequestDefaultActions(
        type="Redirect",
        redirect_config=alb_models.CreateListenerRequestDefaultActionsRedirectConfig(
            protocol="HTTPS",
            port="443",
            http_redirect_code="301",
        ),
    )],
))

QUIC listener

python

# QUIC listener (requires an existing HTTPS listener on the same ALB)
client.create_listener(alb_models.CreateListenerRequest(
    load_balancer_id=load_balancer_id,
    listener_protocol="QUIC",
    listener_port=443,
    default_actions=[alb_models.CreateListenerRequestDefaultActions(
        type="ForwardGroup",
        forward_group_config=alb_models.CreateListenerRequestDefaultActionsForwardGroupConfig(
            server_group_tuples=[alb_models.CreateListenerRequestDefaultActionsForwardGroupConfigServerGroupTuples(
                server_group_id=server_group_id,
            )],
        ),
    )],
    certificates=[alb_models.CreateListenerRequestCertificates(certificate_id="cert-xxx")],
))
# Note: QUIC Client Hello must be ≥ 1024 bytes; see troubleshooting doc for details

Health Check Template

python

# Create a reusable health check template
resp = client.create_health_check_template(alb_models.CreateHealthCheckTemplateRequest(
    health_check_template_name="standard-http-check",
    health_check_protocol="HTTP",
    health_check_path="/health",
    health_check_method="HEAD",
    health_check_codes=["http_2xx", "http_3xx"],
    health_check_interval=5,
    health_check_timeout=3,
    healthy_threshold=3,
    unhealthy_threshold=3,
))
template_id = resp.body.health_check_template_id

# Apply template to a server group
client.apply_health_check_template_to_server_group(
    alb_models.ApplyHealthCheckTemplateToServerGroupRequest(
        server_group_id="sgp-xxx",
        health_check_template_id=template_id,
    )
)

Log Analysis

ALB access log analysis is handled by the

alicloud-observability-sls-log-query

skill.

Get log config from

GetLoadBalancerAttribute

```
AccessLogConfig.LogProject
```
→ SLS Project
```
AccessLogConfig.LogStore
```
→ SLS Logstore

Common query templates: see

references/log-analysis.md

Troubleshooting

See

references/troubleshooting.md

for:

Cannot access service / connectivity checklist
High latency diagnosis
Health check failures (first-time config, iptables blocking, source IPs)
HTTP status codes — full ALB error reference (400/405/408/414/463/499/500/502/503/504)
Certificate & HTTPS issues (expiry, wildcard rules, SNI, WAF sync)
Forwarding rule conflicts
ACL access control issues
Request limits (URI, header, body, keep-alive)
WAF integration (2.0 vs 3.0)
EIP & bandwidth

API Reference

Full API list:

references/api_quick_map.md

Output And Evidence

Save outputs under
```
output/alicloud-network-alb/
```
.
Keep command parameters and region scope in evidence files.

alicloud-network-alb

NPX Install

Tags

SKILL.md Content

Application Load Balancer (ALB)

Validation

Prerequisites

AccessKey priority

Scripts

Load Balancer Instances

Listeners

Server Groups

Forwarding Rules

Health Check

Certificates

Security Policies

Access Control (ACL)

Async Job Polling

Write Operations Cookbook

Step 1: Create independent resources (parallelizable)

Step 2: Add backends to Server Group

Step 3: Create ALB instance → yields
`LoadBalancerId`

Step 4: Enable Access Log (optional)

Step 5: Create Listener → yields
`ListenerId`

Step 6: Configure Listener sub-resources (parallelizable)

Teardown (reverse order)

Common operations

Update operations

HTTP → HTTPS redirect pattern

QUIC listener

Health Check Template

Log Analysis

Troubleshooting

API Reference

Output And Evidence