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https://github.com/k911/haproxy-keepalived-docker
R&D project: Set-up Highly Available HAProxy via Keepalived using Docker-compose on bare metal or AWS
https://github.com/k911/haproxy-keepalived-docker
aws docker haproxy keepalived
Last synced: 3 days ago
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R&D project: Set-up Highly Available HAProxy via Keepalived using Docker-compose on bare metal or AWS
- Host: GitHub
- URL: https://github.com/k911/haproxy-keepalived-docker
- Owner: k911
- Created: 2019-07-07T20:25:20.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2019-12-03T22:08:44.000Z (almost 5 years ago)
- Last Synced: 2024-05-01T15:27:35.815Z (7 months ago)
- Topics: aws, docker, haproxy, keepalived
- Language: Shell
- Homepage:
- Size: 13.7 KB
- Stars: 18
- Watchers: 2
- Forks: 9
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Highly Available Load Balancing with Floating IP
Using Docker, Keepalived and HAProxy with NGINX server as a web application.
Note: Cloud environments require manual configuration for creating/attaching/detaching Floating IP. For AWS see `aws/keepalived/notify.sh`.
## Set-up
```sh
# enable ip_vs
sudo modprobe ip_vs
# configure system
# see: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/load_balancer_administration/s1-initial-setup-forwarding-vsa
sudo sysctl -w net.ipv4.ip_forward=1
sudo sysctl -w net.ipv4.ip_nonlocal_bind=1
```
## Running
### Config
```yaml
Virtual Server:
IP: 192.168.0.150/24
Port H2: 8080
Port HTTP: 80
Host 1:
IP: 192.168.0.24/24
Interface: enp2s0
Instances:
- keepalived-a
- haproxy-a
- haproxy-b
- web-a
- web-b
Host 2:
IP: 192.168.0.66/24
Interface: wlp3s0
Instances:
- keepalived-b
- haproxy-a
- haproxy-b
- web-a
- web-b
```
### Host 1
```sh
docker-compose up -d keepalived-a haproxy-a haproxy-b web-a web-b
```
### Host 2
```sh
docker-compose up -d keepalived-b haproxy-a haproxy-b web-a web-b
```
### Usage
```sh
##############
# h2 protocol
##############
curl 192.168.0.150:8080 --http2-prior-knowledge
# Server B
curl 192.168.0.150:8080 --http2-prior-knowledge
# Server A
################
# http protocol
################
curl 192.168.0.150
# Server B
curl 192.168.0.150
# Server A
```
## Debugging
### Wireshark
Look for `vrrp` packets.
### Getting docker's private ip address
```sh
docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $(docker-compose ps -q)
```