487 lines
8.4 KiB
Markdown
487 lines
8.4 KiB
Markdown
# Docker Swarm
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## 1. Compute Modules
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### Install OS / headless installation
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1. Flash the image to a SD card/ EMMC.
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2. Go to Boot partition.
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3. Then change the DTB listed in /boot/extlinux/extlinux.conf to -model-a.dtb instead of -cm4.dtb.
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4. Now put the SD card/ EMMC to the preferred base board and boot.
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5. First boot will take time as the user partition will resize to take whole storage size.
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> ssh as "root" and complete setup
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```
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sudo apt update && sudo apt upgrade
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for pkg in docker.io docker-doc docker-compose podman-docker containerd runc; do sudo apt-get remove $pkg; done
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sudo apt install -y docker-compose docker git vim screenfetch net-tools wget curl
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sudo apt autoremove
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```
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#### Edit
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> sudo vim /etc/sudoers.d/pleb
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```
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pleb ALL=(ALL:ALL) NOPASSWD: ALL
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```
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### Set Static IP
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#### Create/Edit
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> sudo vim /etc/systemd/network/end0.network
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```
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[Match]
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Name=end0
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[Network]
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Address=192.168.1.21/24
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Gateway=192.168.1.254
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# OpenDNS
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DNS=208.67.222.222
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DNS=208.67.220.220
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```
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#### Edit
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> sudo vim /etc/hosts
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```
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# Host addresses
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127.0.0.1 localhost
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127.0.1.1 shell1
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# Nodes
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192.168.1.186 shell1 shell1.local
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192.168.1.243 shell2 shell2.local
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192.168.1.194 shell3 shell3.local
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192.168.1.222 shell4 shell3.local
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```
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#### Reboot
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> On remote :
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```
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ssh-keygen -t ed25519
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ssh-copy-id -f -i ~/.ssh/id_ed25519.pub pleb@shell2
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ssh pleb@shell2
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```
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#### Edit
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> sudo vim /etc/ssh/sshd\_config
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```
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PasswordAuthentication no
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```
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#### Restart service
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```
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sudo systemctl restart sshd
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```
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---
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```
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sudo systemctl enable iptables
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sudo systemctl start iptables
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sudo iptables -I INPUT -p tcp -m tcp --dport 2376 -j ACCEPT
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sudo iptables -I INPUT -p tcp -m tcp --dport 2377 -j ACCEPT
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sudo iptables -I INPUT -p tcp -m tcp --dport 7946 -j ACCEPT
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sudo iptables -I INPUT -p udp -m udp --dport 7946 -j ACCEPT
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sudo iptables -I INPUT -p tcp -m udp --dport 4789 -j ACCEPT
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sudo iptables -I INPUT -p 50 -j ACCEPT # allows ipsec when secure overlay is enabled
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```
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#### Restart...
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---
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## 2. Docker Swarm
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### Install docker...
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```
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sudo apt install -y docker docker-compose git
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sudo usermod -aG docker pleb
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sudo systemctl enable docker.service
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sudo systemctl start docker.service
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sudo chmod 666 /var/run/docker.sock
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```
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---
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#### On master
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```
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docker swarm init --advertise-addr 192.168.1.186
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```
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> *Swarm initialized: current node (3kdxixaa86m8pvag6jn0b70ut) is now a manager*.
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#### On nodes
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```
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docker swarm join --token SWMTKN-1-2px1bindhl41x9h6l4ve7x15iwjryr0uf3ekmu7hz4bezjewwh-ae9vv4657zcki160s71vjn75z 192.168.1.186:2377
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```
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> *To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions*.
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> Change ip range if necessary ?!
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```
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docker network rm ingress
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# Create in different range
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docker network create --driver overlay --ingress --subnet 192.168.1.0/16 --gateway 192.168.1.254 ingress
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```
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---
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```
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docker node ls
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docker network ls
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```
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---
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## 3. Keepalived
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> *Load Balancer : install on all nodes*
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```
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sudo apt-get -y install keepalived
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```
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### On master node (shell1)
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#### Create/Edit
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> sudo vim /etc/keepalived/keepalived.conf
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```
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! Configuration File for keepalived
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global_defs {
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notification_email {
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jme69@pm.me
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}
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notification_email_from admin@delmar.bzh
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smtp_server pro1.mail.ovh.net
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smtp_connect_timeout 30
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router_id docker_ingress
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vrrp_skip_check_adv_addr
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vrrp_strict
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vrrp_garp_interval 0
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vrrp_gna_interval 0
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}
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vrrp_instance VI_1 {
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state MASTER
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interface end0
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virtual_router_id 51
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priority 100
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advert_int 1
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authentication {
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auth_type PASS
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auth_pass transatlantique
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}
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virtual_ipaddress {
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192.168.1.30
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}
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}
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```
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### On Node2
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#### Create/Edit
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> sudo vim /etc/keepalived/keepalived.conf
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```
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! Configuration File for keepalived
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global_defs {
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notification_email {
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jme69@pm.me
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}
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notification_email_from admin@delmar.bzh
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smtp_server pro1.mail.ovh.net
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smtp_connect_timeout 30
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router_id docker_ingress
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vrrp_skip_check_adv_addr
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vrrp_strict
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vrrp_garp_interval 0
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vrrp_gna_interval 0
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}
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vrrp_instance VI_1 {
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state BACKUP
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interface end0
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virtual_router_id 51
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priority 90
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advert_int 1
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authentication {
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auth_type PASS
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auth_pass transatlantique
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}
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virtual_ipaddress {
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192.168.1.30
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}
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}
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```
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### On Node3
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#### Create/Edit
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> sudo vim /etc/keepalived/keepalived.conf<span class="keep-md">`</span>
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```
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! Configuration File for keepalived
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global_defs {
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notification_email {
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jme69@pm.me
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}
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notification_email_from admin@delmar.bzh
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smtp_server pro1.mail.ovh.net
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smtp_connect_timeout 30
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router_id docker_ingress
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vrrp_skip_check_adv_addr
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vrrp_strict
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vrrp_garp_interval 0
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vrrp_gna_interval 0
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}
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vrrp_instance VI_1 {
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state BACKUP
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interface end0
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virtual_router_id 51
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priority 80
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advert_int 1
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authentication {
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auth_type PASS
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auth_pass transatlantique
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}
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virtual_ipaddress {
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192.168.1.30
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}
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}
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```
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### On Node4
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#### Create/Edit
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> sudo vim /etc/keepalived/keepalived.conf<span class="keep-md">`</span>
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```
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! Configuration File for keepalived
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global_defs {
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notification_email {
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jme69@pm.me
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}
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notification_email_from admin@delmar.bzh
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smtp_server pro1.mail.ovh.net
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smtp_connect_timeout 30
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router_id docker_ingress
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vrrp_skip_check_adv_addr
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vrrp_strict
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vrrp_garp_interval 0
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vrrp_gna_interval 0
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}
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vrrp_instance VI_1 {
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state BACKUP
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interface end0
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virtual_router_id 51
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priority 70
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advert_int 1
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authentication {
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auth_type PASS
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auth_pass transatlantique
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}
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virtual_ipaddress {
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192.168.1.30
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}
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}
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```
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#### Start/Enable Service
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```
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sudo systemctl enable keepalived
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sudo systemctl start keepalived
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ip a show end0
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```
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---
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## 4. Glusterfs
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> *Distributed Storage : install on all nodes*
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```
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sudo apt-get -y install glusterfs-server
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sudo systemctl enable glusterd
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sudo systemctl start glusterd
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```
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> sudo fdisk -l
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```
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# Format your disk (If you decided to use your internal storage, just ignore the mount and format steps)
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sudo mkfs.xfs -f /dev/sda
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# Create brick folder location
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sudo mkdir -p /data/glusterfs/volume/brick
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# Add line to /etc/fstab to auto mount this disk to /data on boot
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echo "/dev/sda1 /data/glusterfs/volume/brick xfs defaults 0 0" | sudo tee -a /etc/fstab
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# Create brick folder
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# sudo mkdir -p /data/glusterfs/volume/brick/brick
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# Mount
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sudo mount -a
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sudo systemctl daemon-reload
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sudo gluster peer probe shell2
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sudo gluster peer probe shell3
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sudo gluster peer probe shell4
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```
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> Check
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```
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df -h /data/glusterfs/volume/brick
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sudo gluster pool list
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sudo gluster peer status
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```
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> For 2 nodes:
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```
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sudo gluster volume create docker-volume replica 2 transport tcp shell1:/mnt/datav shell3:/mnt/data force
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```
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For 3 nodes:
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```
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sudo gluster volume create dockervolume disperse 3 redundancy 1 shell1:/data/glusterfs/volume/brick shell2:/data/glusterfs/volume/brick shell3:/data/glusterfs/volume/brick force
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```
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#### Start Gluster Volume
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```
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sudo gluster volume info dockervolume
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sudo gluster volume start dockervolume
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```
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> On all nodes :
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```
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sudo mkdir /mnt/data
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echo "localhost:/dockervolume /mnt/data glusterfs defaults,_netdev 0 0" | sudo tee -a /etc/fstab
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sudo mount -a
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sudo systemctl daemon-reload
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```
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> Check
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> > Persistent shared storage will be "/mnt/data"
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```
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df -h /mnt/data
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sudo gluster volume set dockervolume auth.allow 127.0.0.1,192.168.1.186,192.168.1.243,192.168.1.194,192.168.1.222
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```
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> When adding a new brick:
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```
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sudo gluster volume add-brick **volume** replica X **server:brick**
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```
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> Option
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```
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docker plugin install --alias glusterfs mikebarkmin/glusterfs SERVERS=shell1,shell2,shell3,shell4 VOLNAME=dockervolume
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```
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### 5. Portainer
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Create container directory
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```
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sudo mkdir -p /var/lib/docker/volumes
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sudo mkdir -p /mnt/data/portainer
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```
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> Edit
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```
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sudo vim portainer-agent-stack.yml
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```
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> Down at the bottom, remove :
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```
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volumes:
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portainer_data:
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```
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> And in Section services -> portainer -> volumes, change it to :
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```
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volumes:
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- type: bind
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source: /mnt/data/portainer/portainer_data
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target: /data
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```
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> Deploy
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```
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docker stack deploy -c portainer-agent-stack.yml portainer
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```
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#### Upgrade
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```
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docker service ls
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docker pull portainer/portainer-ce:latest
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docker service update --image portainer/portainer-ce:latest --publish-add 9443:9443 --force portainer_portainer
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docker pull portainer/agent:latest
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docker service update --image portainer/agent:latest --force portainer_agent
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``` |