QuicklyOfflineHelmCharts

Following is the tips:

Create the minikube environment, and enable the helm/charts:

#  minikube start --cpus 4 --memory 8192 --disk-size 60g
# helm init

Download the prometheus-operator from the official github repository, use dependency update for updating the dependency locally:

# cd prometheus-operator
# helm dependency update

Record the docker images before deployment:

# eval $(minikube docker-env)
# docker images>before.txt

Now deploy the helm/charts using:

#  helm install --name newprom .

When all of the items were deployed, record the images via:

# docker images>after.txt

With the helm/charts folder and the before.txt and after.txt you could making this helm/charts working offline.

# docker save -o prometheus-operator.tar grafana/grafana:6.0.2 kiwigrid/k8s-sidecar:0.0.13 quay.io/coreos/prometheus-config-reloader:v0.29.0 quay.io/coreos/prometheus-operator:v0.29.0 quay.io/prometheus/alertmanager:v0.16.1 quay.io/prometheus/prometheus:v2.7.1 k8s.gcr.io/kube-state-metrics:v1.5.0 quay.io/prometheus/node-exporter:v0.17.0 quay.io/coreos/configmap-reload:v0.0.1
# xz prometheus-operator.tar
# tag and push

WorkingtipsOnUbuntu160406Kubesprayoffline

VagrantBox

ToBeAdded

Offline

Steps:

# wget ....../kubespray-2.8.4.tar.gz .
# tar xzvf kubespray-2.8.4.tar.gz 
# cd kubespray-2.8.4
# vim inventory/sample/group_vars/k8s-cluster/addons.yml 
helm_enabled: true
metrics_server_enabled: true
# vim inventory/sample/hosts.ini
[all]
node ansible_host=10.0.2.15  # ip=10.0.2.15 etcd_member_name=etcd1

[kube-master]
node

[etcd]
node

[kube-node]
node

[k8s-cluster:children]
kube-master
kube-node
# cat /etc/apt/sources.list
deb http://mirrors.163.com/ubuntu/ xenial main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ xenial-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ xenial-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ xenial-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ xenial-backports main restricted universe multiverse
# apt-add-repository ppa:ansible/ansible
# apt-get update
# apt-get install -y ansible python-pip python ntp dbus python-apt
# ansible --version
ansible 2.7.10
  config file = /root/kubespray-2.8.4/ansible.cfg
  configured module search path = [u'/root/kubespray-2.8.4/library']
  ansible python module location = /usr/lib/python2.7/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.12 (default, Nov 12 2018, 14:36:49) [GCC 5.4.0 20160609
# vim /etc/ssh/sshd_config
PermitRootLogin yes
# systemctl restart sshd
# ssh-keygen
# ssh-copy-id root@10.0.2.15
# apt-get install -y bind9 bind9utils ntp nfs-common nfs-kernel-server python-netaddr nethogs iotop
#### find all of the debs and upload it to deployment directory for replacing 1604debs.tar.xz
# ansible-playbook  -i inventory/sample/hosts.ini cluster.yml

WorkingTipsOnUbutunIPV6

Conoha ipv6

Find the ipv6 addresses(should have 17 ipv6 addresses together):

Network Configuration

Edit the networking via:

#  vim /etc/network/interfaces
# The primary network interface
auto ens3
iface ens3 inet dhcp
iface ens3 inet6 dhcp 
accept_ra 1

# IPv6 configuration
iface ens3 inet6 static
  pre-up modprobe ipv6
  address xxxxxx
  netmask 64

Restart the networking via service networking restart, then you will get the ipv6 address via:

# ifconfig | grep inet6

shadowsocks configuration

Edit the configuration :

# cat shadowsocks.json
{
"server":"::",

.....

"prefer_ipv6": true
}

Now restart the service of sss

TipsOnForemanOnCentOS76

Prerequites

System infos:

# cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core)
# vi /etc/yum.conf
keepcache=1
#### Configure yum.conf and install some packages
# yum install -y wget vim net-tools gcc
#  vim /etc/seliconfig/config
SELINUX=disabled
# systemctl diable firewalld

Install foreman

Configure host first:

# hostnamectl set-hostname foreman.fuck.com
# vim /etc/hosts
10.192.192.2	foreman.fuck.com

Networking configuration like following(using nmtui):

Install via:

# sudo yum -y install https://yum.puppetlabs.com/puppet5/puppet5-release-el-7.noarch.rpm
# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
# sudo yum -y install https://yum.theforeman.org/releases/1.21/el7/x86_64/foreman-release.rpm
# sudo yum -y install foreman-installer

ForemanTips

System

Install Ubuntu 18.04, 4 Core/ 4G memory, 50 G disk.

Install with basic sshd support.

Network planning:
10.192.189.0/24, no dhcp.

Network

Configure the networking via following commands:

# vim /etc/netplan/01-netcfg.yaml
network:
  version: 2
  renderer: networkd
  ethernets:
    enp1s0:
      dhcp4: no
      addresses: [10.192.189.2/24]
      gateway4: 10.192.189.1
      nameservers:
        addresses: [223.5.5.5,180.76.76.76]

# netplan --debug apply
# systemctl disable systemd-resolved.service
# systemctl stop systemd-resolved.service
# rm -f /etc/resolv.conf 
# echo nameserver 223.5.5.5>/etc/resolv.conf

Configure the hostname:

# sudo hostnamectl set-hostname foreman.fuck.com
# echo "10.192.189.2 foreman.fuck.com" | sudo tee -a /etc/hosts

Install foreman

Install foreman via following commands:

# hostnamectl set-hostname foreman.fuck.com
# echo "10.192.189.2 foreman.fuck.com"| sudo tee -a /etc/hosts
# apt-get update
# apt-get update
# sudo apt-get install ca-certificates
# wget https://apt.puppetlabs.com/puppet5-release-bionic.deb
# sudo dpkg -i puppet5-release-bionic.deb
# rm puppet5-release-bionic.deb
# echo "deb http://deb.theforeman.org/ bionic 1.19" | sudo tee /etc/apt/sources.list.d/foreman.list
# echo "deb http://deb.theforeman.org/ plugins 1.19" | sudo tee -a /etc/apt/sources.list.d/foreman.list
# apt-get -y install ca-certificates
# wget -q https://deb.theforeman.org/pubkey.gpg -O- | sudo apt-key add -
# apt-get update
# sudo apt-get install foreman-installer
# foreman-installer
# foreman-installer  --enable-foreman-proxy  --foreman-proxy-tftp=true  --foreman-proxy-tftp-servername=10.192.189.2  --foreman-proxy-dhcp=true  --foreman-proxy-dhcp-interface=eth0  --foreman-proxy-dhcp-gateway=10.192.189.1  --foreman-proxy-dhcp-nameservers="10.192.189.2"  --foreman-proxy-dhcp-range="10.192.189.100 10.192.189.200"  --foreman-proxy-dns=true  --foreman-proxy-dns-interface=eth0  --foreman-proxy-dns-zone=fuck.com  --foreman-proxy-dns-reverse=189.192.10.in-addr.arpa  --foreman-proxy-dns-forwarders=8.8.8.8  --foreman-proxy-foreman-base-url=https://foreman.fuck.com  --foreman-proxy-oauth-consumer-key=ceqCFsvS8qrVRv8W3pb5yWNs6Prt9iZS  --foreman-proxy-oauth-consumer-secret=aYCHnyCzRXFuuy4nNXWthBKhPiNdfzJt

Refers to:

Status:

After a while, you will see the server has been detected and displayed in the webpage:

Configuration for CentOS7

Download iso from mirror:

# wget http://mirrors.163.com/centos/7.6.1810/isos/x86_64/CentOS-7-x86_64-Minimal-1810.iso
# mount -t iso9660 ./CentOS-7-x86_64-Minimal-1810.iso /mnt
# cp -arv /mnt/* ./website

Create docker based website:

# apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    software-properties-common
# curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
# apt-key fingerprint 0EBFCD88
# add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
# apt-get update && apt-get install -y docker-ce
# docker pull jrelva/nginx-autoindex:latest
# mkdir -p /opt/web
# docker run --name docker-nginx -p 7888:80 -d --restart=always -v /opt/web:/usr/share/nginx/html jrelva/nginx-autoindex

Host-> Installation Media, add new iso:

Host-> Operating System, Create new os:

Filled the description of the new os:

Choose x86_64:

Partition Tables we choose Kickstart default:

Associate the installation media with our centos 7.6:

Click submit, later we will choose template for provision.

Host-> Provision Templates, choose following templates and associate with CentOS7_x86_64:

kickstart default finish
kickstart default
kickstart default ipxe
kickstart default pxelinux
kickstart default use data

Associate with template:

Next we will configure the subnet and the foreman-proxy items.