feiskyer / ops

Tools&scripts for daily devops.

Devops

Tools&scripts for devops.

Contents

• Container/docker management
• Kubernetes deployment&management
• Networking experiments
• Vagrant tools

Get the scripts

git clone https://github.com/feiskyer/ops.git --recurse-submodules
cd ops

Kubernetes

Create a kubernetes cluster master

• Install kubernetes with docker:

# Setup kubernetes master.
sudo ./kubernetes/install-kubernetes.sh

Add a new node

# Setup token and CIDR first.
# replace this with yours.
export TOKEN="xxxx"
export MASTER_IP="x.x.x.x"
export CONTAINER_CIDR="10.244.2.0/24"

# Setup and join the new node.
sudo ./kubernetes/add-node.sh

Customize

• Use mirrors in China: export USE_MIRROR=true. Only required for Chinese users.
• Container runtime: export CONTAINER_RUNTIME="docker". Supported options:
  • docker
  • containerd
  • cri-o
  • gvisor
• CNI network plugins: export NETWORK_PLUGIN="flannel". Supported options:
  • flannel
  • calico
  • weave
  • azure
  • bridge
• Cluster CIDR: export CLUSTER_CIDR="10.244.0.0/16"
• Container CIDR: export CONTAINER_CIDR="10.244.1.0/24". Only required for bridge network plugin.

Kubernetes manifest examples

See k8s-examples.

Docker

sudo ./kubernetes/install-docker.sh

OVS

• Install ovs: sudo ./ovs/ovs-install.sh
• Start ovn: sudo ./ovs/ovn-start.sh

Misc

• Install golang: sudo ./misc/golang-install.sh

ops's Issues

docker 安装脚本应该改进一下了

新的docker叫docker-ce了，使用docker这个名称会安装到旧版docker

`lsb-dist': 不是有效的标识符

sh kubernetes/install-docker.sh
kubernetes/lib/util.sh:行26: `lsb-dist': 不是有效的标识符

sh kubernetes/install-kubernetes.sh
kubernetes/lib/util.sh:行26: `lsb-dist': 不是有效的标识符

ubuntu 18.04 install kubernetes fail, USE_MIRROR=true

这是我用ops安装kubernetes最后得到的结果！
安装机器: ubuntu 18.04
我在国内阿里云用ops也没有安装成功，USE_MIRROR=true已经设置了！

[kubelet-check] It seems like the kubelet isn't running or healthy.
[kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get http://localhost:10248/healthz: dial tcp 127.0.0.1:10248: connect: connection refused.

Unfortunately, an error has occurred:
	timed out waiting for the condition

This error is likely caused by:
	- The kubelet is not running
	- The kubelet is unhealthy due to a misconfiguration of the node in some way (required cgroups disabled)

If you are on a systemd-powered system, you can try to troubleshoot the error with the following commands:
	- 'systemctl status kubelet'
	- 'journalctl -xeu kubelet'

Additionally, a control plane component may have crashed or exited when started by the container runtime.
To troubleshoot, list all containers using your preferred container runtimes CLI, e.g. docker.
Here is one example how you may list all Kubernetes containers running in docker:
	- 'docker ps -a | grep kube | grep -v pause'
	Once you have found the failing container, you can inspect its logs with:
	- 'docker logs CONTAINERID'
error execution phase wait-control-plane: couldn't initialize a Kubernetes cluster

dhcp无法获取到IP地址

HI，我在执行ovn dhcp.sh时发现dhclient执行时卡住超时，然后也获取不到ip地址，不知道是什么情况？

port1超时， port2提示dhclient已运行

dhclient(19497) is already running - exiting. 

This version of ISC DHCP is based on the release available
on ftp.isc.org.  Features have been added and other changes
have been made to the base software release in order to make
it work better with this distribution.

Please report for this software via the CentOS Bugs Database:
    http://bugs.centos.org/