Gerador de senhas:

openssl rand -base64 32

docker

Docker

Instalação CentOS 7

# yum install -y yum-utils device-mapper-persistent-data lvm2
# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
# yum install docker-ce -y && systemctl enable docker.service && systemctl start docker.service

Instalação CentOS 8 / OL8

# dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo &&\
CONTAINERD_IO=$(curl -sL https://download.docker.com/linux/centos/7/x86_64/stable/Packages | grep -o '>containerd.io.*<' | tail -1 | sed 's/>//;s/<//') &&\
dnf install -y https://download.docker.com/linux/centos/7/x86_64/stable/Packages/$CONTAINERD_IO &&\
dnf install docker-ce --nobest -y &&\
systemctl enable docker.service && systemctl start docker.service

dnf install -y yum-utils &&\
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo &&\
dnf install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin &&\
systemctl enable docker &&\
systemctl start docker &&\
echo -e 'alias docker-compose="docker compose"\nalias dcp="docker compose"' > /etc/profile.d/docker.sh &&\
source /etc/profile.d/docker.sh

Instalação Ubuntu

# sudo apt-get update &&\
sudo apt-get install apt-transport-https ca-certificates curl software-properties-common -y &&\
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - &&\
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" &&\
sudo apt-get update &&\
sudo apt-get install docker-ce -y

Instalação Debian

apt install ca-certificates curl gnupg lsb-release &&\
curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg &&\
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null &&\
apt update &&\
apt install docker-ce docker-ce-cli containerd.io docker-compose-plugin -y

Instalação AlmaLinux

sudo dnf install -y dnf-plugins-core &&\
sudo dnf config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo &&\
sudo dnf install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

sudo systemctl start docker &&\
sudo systemctl enable docker

# Bash-completion
dnf install bash-completion &&\
source /etc/profile.d/bash_completion.sh

Instalação Docker-Compose via repositório

Opção 1:

# yum install -y epel-release && yum install -y python-pip && pip install docker-compose &&\
yum upgrade python* && docker-compose version

Opção 2:

curl -sSL https://raw.githubusercontent.com/riav/docker/master/composectl/install-compose.sh | sh

Docker swarm

Instalação

docker swarm init

# Copiar o comando gerado e executar nos nodes workers
docker swarm join --token ...

# Instalando rede overlay para proxy
docker network create --driver overlay network_public

Comandos

# Listando nodes
docker node ls

# Deploy stack
docker stack deploy <nome_stacke> -c <stack.yaml>

# Listando stacks
docker stack ls

# Listando serviços
docker service ls

# Reiniciando serviço
docker service update --force <service_name>

# Atualizando imagem de serviço
docker service update --image <image:tag> <service_name>