Tag Archives: exported

Ausgehenden Traffic umleiten

title: “Ausgehenden Traffic umleiten”
date: 2018-02-09T10:00:18
slug: ausgehenden-traffic-umleiten

iptables -t nat -A OUTPUT -p tcp -d 10.90.32.6 --dport 443 -j DNAT --to-destination 10.90.18.52:443
iptables -t nat -A POSTROUTING -j MASQUERADE

K8S Debian Node – Flannel

title: “K8S Debian Node – Flannel”
date: 2018-02-08T15:45:49
slug: k8s-debian-node-flannel

curl --silent --location 'https://github.com/coreos/flannel/releases/download/v0.10.0/flannel-v0.10.0-linux-amd64.tar.gz' | tar -zvxf-
cp flanneld /usr/bin
mkdir -p /var/lib/k8s/flannel/networks

`cat << EOF > /lib/systemd/system/flanneld.service
[Unit]
Description=Network fabric for containers
Documentation=https://github.com/coreos/flannel
After=etcd.service

[Service]
Type=notify
Restart=always
RestartSec=5
ExecStart=/usr/bin/flanneld \
-etcd-endpoints=http://10.0.1.80:4001 \
-logtostderr=true \
-subnet-dir=/var/lib/k8s/flannel/networks \
-subnet-file=/var/lib/k8s/flannel/subnet.env
[Install]
WantedBy=multi-user.target
EOF`

Set up Go

title: “Set up Go”
date: 2018-01-22T19:51:53
slug: settun-go-variables

Download the archive (https://golang.org/dl/)

and extract it into /usr/local, creating a Go tree in /usr/local/go. For example:

tar -C /usr/local -xzf go$VERSION.$OS-$ARCH.tar.gz

export PATH=$PATH:/usr/local/go/bin

Create your workspace directory, $HOME/go. (If you’d like to use a different directory, you will need to set the GOPATH environment variable.)

mkdir -p $HOME/go/src

Create Test Project

mkdir $HOME/go/src/hello
vi $HOME/go/src/hello/hello.go

package main
import "fmt"
func main() {
fmt.Printf("hello, world
")
}

Then build it with the go tool:

cd $HOME/go/src/hello
go build

&

kubeadmin kubernetes mit weave unter Ubuntu

title: “kubeadmin kubernetes mit weave unter Ubuntu”
date: 2018-01-10T13:19:28
slug: kubeadmin-kubernetes-mit-weave-unter-ubuntu

apt-get install -y docker.io

cat << EOF > /etc/docker/daemon.json
{
“exec-opts”: [“native.cgroupdriver=systemd”]
}
EOF

apt-get update && apt-get install -y apt-transport-https
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add –
cat </etc/apt/sources.list.d/kubernetes.list
deb http://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt-get update
apt-get install -y kubelet kubeadm kubectl
kubeadm init –pod-network-cidr=172.16.0.0/16 –service-cidr=172.17.0.0/18

vi /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
-> add “–pod-cidr=172.16.0.0/16 –cgroup-driver=systemd –register-with-taints=node-role.kubernetes.io/master=:PreferNoSchedule” to KUBELET_NETWORK_ARGS
-> set –cluster-dns=172.17.0.10

systemctl daemon-reload
systemctl restart kubelet

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

sysctl net.bridge.bridge-nf-call-iptables=1
export kubever=$(kubectl version | base64 | tr -d ‘
’)
kubectl apply -f “https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d ‘
’)&env.IPALLOC_RANGE=172.16.0.0/16″
kubectl get nodes

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/alternative/kubernetes-dashboard.yaml

kubectl describe svc kubernetes-dashboard -n kube-system

Check the “IP” and the “Endpoints:” IP Addresses, should be from the pod and service cidr

Get cni binaries

title: “Get cni binaries”
date: 2017-09-05T13:30:22
slug: get-cni-binaries

mkdir -p /opt/cni/bin/
curl -fsSL ‘https://github.com/containernetworking/cni/releases/download/v0.4.0/cni-amd64-v0.4.0.tgz’ | tar xvz -C /opt/cni/bin/

Squid Proxy chaching für gif|png|jpeg|jpg|bmp|tif|tiff|ico

title: “Squid Proxy chaching für gif|png|jpeg|jpg|bmp|tif|tiff|ico”
date: 2017-08-09T19:20:51
slug: squid-proxy-chaching-fur-gifpngjpegjpgbmptiftiffico

http_port 127.0.0.1:8080 accel defaultsite=127.0.0.1
cache_peer 127.0.0.1 parent 8081 0 no-query originserver

acl our_sites dstdomain 127.0.0.1
http_access allow our_sites

cache_effective_user proxy
cache_effective_group proxy
cache_dir ufs /var/spool/squid3 100 16 256
cache_mem 60 GB
maximum_object_size_in_memory 512 KB

refresh_pattern -i .(gif|png|jpeg|jpg|bmp|tif|tiff|ico)$ 10080 50% 43200 override-expire override-lastmod reload-into-ims ignore-reload ignore-no-cache ignore-auth ignore-private

New Contabo Server (NFS, Kubernetes, openvpn)

title: “New Contabo Server (NFS, Kubernetes, openvpn)”
date: 2017-02-02T09:25:41
slug: new-contabo-server-nfs-kubernetes-openvpn

Add to .bashrc

export LC\_ALL=en\_US.UTF-8
export LANG=en\_US.UTF-8
export LANGUAGE=en\_US.UTF-8

Add Kubernetes Repository

echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" > /etc/apt/sources.list.d/kubernetes.list

apt-get install curl
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
apt-get install -y apt-transport-https && apt-get update && apt-get install -y vim mc nfs-kernel-server openvpn docker.io kubelet kubeadm kubectl kubernetes-cni

Add SSH Keys from old server

vi .ssh/authorized\_keys

Copy content from old server

tar zcPf - /STORAGE /etc/openvpn /etc/exports /etc/hostname /etc/rc.local /var/spool/cron/crontabs /root/.docker | ssh root@178.238.228.154 'tar zxpPf - '

UTF-8 Terminal charset

title: “UTF-8 Terminal charset”
date: 2017-01-25T19:47:41
slug: utf-8-terminal-charset

dpkg-reconfigure locales

vi ~/.bashrc

export LC\_ALL=en\_US.UTF-8
export LANG=en\_US.UTF-8
export LANGUAGE=en\_US.UTF-8

Sofort übernehmen

source ~/.bashrc