CodeBleu opened a new pull request, #10968:
URL: https://github.com/apache/cloudstack/pull/10968
### Description
This PR will allow the updating of a loadbalancer rules `CIDR list` via the
API.
* Should fix https://github.com/apache/cloudstack/issues/9313
Not 100% sure this is the correct place to base and create PR for, but this
issue does exist in `4.19`, `4.20`, and `main`. I figure I'd start here and
see what is needed to get this into the code base so `>= 4.19` will have the
fixes.
I have tested this code in `4.19`, `4.20`, and `main` branches via
simulator and all works, just not sure of the process to get this fix into
those branches.
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### Types of changes
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] Enhancement (improves an existing feature and functionality)
- [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
- [ ] build/CI
- [ ] test (unit or integration test code)
### Feature/Enhancement Scale or Bug Severity
#### Feature/Enhancement Scale
- [ ] Major
- [x] Minor
#### Bug Severity
- [ ] BLOCKER
- [ ] Critical
- [ ] Major
- [x] Minor
- [ ] Trivial
### Screenshots (if appropriate):
Before, the Source CIDR list was blank (Simulator env)

```
(localcloud) :penguin: > list loadbalancerrules
{
"count": 1,
"loadbalancerrule": [
{
"account": "admin",
"algorithm": "roundrobin",
"cidrlist": "",
"domain": "ROOT",
"domainid": "5b6a2947-416b-11f0-9a39-564a8191c23c",
"domainpath": "/",
"fordisplay": true,
"id": "0d8e3cb9-767b-45f3-834d-3f9ce85df901",
"name": "newlbtest",
"networkid": "5bb3ecfb-cde3-4821-8822-0c4c8a8e9559",
"privateport": "3306",
"protocol": "tcp",
"publicip": "192.168.2.10",
"publicipid": "9b2638d7-7330-49c7-9d6e-5b5777f6ca16",
"publicport": "3306",
"state": "Add",
"tags": [],
"zoneid": "7cb86a09-676e-4f00-ad39-012f0eb2e69d",
"zonename": "Sandbox-simulator"
}
]
}
(localcloud) :penguin: > update loadbalancerrule
id="0d8e3cb9-767b-45f3-834d-3f9ce85df901" cidrlist="1.2.3.4/32"
{
"loadbalancer": {
"account": "admin",
"algorithm": "roundrobin",
"cidrlist": "1.2.3.4/32",
"domain": "ROOT",
"domainid": "5b6a2947-416b-11f0-9a39-564a8191c23c",
"domainpath": "/",
"fordisplay": true,
"id": "0d8e3cb9-767b-45f3-834d-3f9ce85df901",
"name": "newlbtest",
"networkid": "5bb3ecfb-cde3-4821-8822-0c4c8a8e9559",
"privateport": "3306",
"protocol": "tcp",
"publicip": "192.168.2.10",
"publicipid": "9b2638d7-7330-49c7-9d6e-5b5777f6ca16",
"publicport": "3306",
"state": "Add",
"tags": [],
"zoneid": "7cb86a09-676e-4f00-ad39-012f0eb2e69d",
"zonename": "Sandbox-simulator"
}
}
(localcloud) :penguin: > update loadbalancerrule
id="0d8e3cb9-767b-45f3-834d-3f9ce85df901" cidrlist=
{
"loadbalancer": {
"account": "admin",
"algorithm": "roundrobin",
"cidrlist": "",
"domain": "ROOT",
"domainid": "5b6a2947-416b-11f0-9a39-564a8191c23c",
"domainpath": "/",
"fordisplay": true,
"id": "0d8e3cb9-767b-45f3-834d-3f9ce85df901",
"name": "newlbtest",
"networkid": "5bb3ecfb-cde3-4821-8822-0c4c8a8e9559",
"privateport": "3306",
"protocol": "tcp",
"publicip": "192.168.2.10",
"publicipid": "9b2638d7-7330-49c7-9d6e-5b5777f6ca16",
"publicport": "3306",
"state": "Add",
"tags": [],
"zoneid": "7cb86a09-676e-4f00-ad39-012f0eb2e69d",
"zonename": "Sandbox-simulator"
}
}
```
Tested on `actual test environment` and below is where you can see when it
was restricted it didn't connect to mysql, but when opened up and CIDR set to
0.0.0.0/0 it worked. I tested with specific Public IP in CIDR as well
(x.x.0.118/32) and this works and you can see in the virtual router for haproxy
it set the ACL.
**Restricted with wrong IP in source CIDR of LB**
```
тоб $ mysql -h x.x.x.110 -u root -p
Enter password:
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial
communication packet', system error: 104
```
**With correct source CIDR or 0.0.0.0/0**
```
$ mysql -h x.x.x.110 -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4730216
Server version: 8.0.33 MySQL Community Server - GPL
Copyright (c) 2000, 2024, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input
statement.
mysql> quit
Bye
```


### How Has This Been Tested?
<!-- Please describe in detail how you tested your changes. -->
<!-- Include details of your testing environment, and the tests you ran to
-->
#### How did you try to break this feature and the system with this change?
Ran multiple tests with Cloudmonkey against simulator and actual test
environment. See above for testing info
<!-- see how your change affects other areas of the code, etc. -->
<!-- Please read the
[CONTRIBUTING](https://github.com/apache/cloudstack/blob/main/CONTRIBUTING.md)
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