June 2019
M T W T F S S
« May   Jul »
 12
3456789
10111213141516
17181920212223
24252627282930

Categories

WordPress Quotes

I never think of the future - it comes soon enough.
Albert Einstein
June 2019
M T W T F S S
« May   Jul »
 12
3456789
10111213141516
17181920212223
24252627282930

Short Cuts

2012 SERVER (64)
2016 windows (9)
AIX (13)
Amazon (40)
Ansibile (19)
Apache (135)
Asterisk (2)
cassandra (2)
Centos (211)
Centos RHEL 7 (268)
chef (3)
cloud (2)
cluster (3)
Coherence (1)
DB2 (5)
DISK (25)
DNS (9)
Docker (30)
Eassy (11)
ELKS (1)
EXCHANGE (3)
Fedora (6)
ftp (5)
GIT (3)
GOD (2)
Grub (1)
Hacking (10)
Hadoop (6)
health (1)
horoscope (23)
Hyper-V (10)
IIS (15)
IPTABLES (15)
JAVA (7)
JBOSS (32)
jenkins (1)
Kubernetes (7)
Ldap (5)
Linux (188)
Linux Commands (166)
Load balancer (5)
mariadb (14)
Mongodb (4)
MQ Server (24)
MYSQL (84)
Nagios (5)
NaturalOil (13)
Nginx (35)
Ngix (1)
openldap (1)
Openstack (6)
Oracle (35)
Perl (3)
Postfix (19)
Postgresql (1)
PowerShell (2)
Python (3)
qmail (36)
Redis (12)
RHCE (28)
SCALEIO (1)
Security on Centos (29)
SFTP (1)
Shell (64)
Solaris (58)
Sql Server 2012 (4)
squid (3)
SSH (10)
SSL (14)
Storage (1)
swap (3)
TIPS on Linux (28)
tomcat (62)
Uncategorized (30)
Veritas (2)
vfabric (1)
VMware (28)
Weblogic (38)
Websphere (71)
Windows (19)
Windows Software (2)
wordpress (1)
ZIMBRA (17)

WP Cumulus Flash tag cloud by Roy Tanck requires Flash Player 9 or better.

Who's Online

18 visitors online now
5 guests, 13 bots, 0 members

Hit Counter provided by dental implants orange county

How to create a TCP listener or open ports in unix os

You can create a port listener using Netcat .

yum install nc -y

root@rmohan:~# nc -l 5000 you can also check if port is open or not using netstat command .

root@vm-rmohan:~# netstat -tulpen | grep nc tcp 0 0 0.0.0.0:5000 0.0.0.0:* LISTEN 0 710327 17533/nc you can also check with nc :

[…]

INSTALLING KUBERNETES ON CENTOS7

[RUN ALL BELOW COMMADS on ALL NODES]

yum update yum install -y epel-release

yum install docker [v1.11 or 1.12 or 1.13]

setup kubernates respos

kubeadm kubectl kubelet

[root@kubmaster yum.repos.d]

# cat kubernetes.repo

[kubernetes]

name=Kubernetes baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64 enabled=1 gpgcheck=1 repo_gpgcheck=1 gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg

setenforce 0

yum install -y kubelet kubeadm kubectl

Add host entry […]

k8s ansible install

Ansible role to setup 1 master +2 node kubernetes cluster (more nodes can be added)

setup centos VMs configure hostnames Update hosts file template in ../roles/kubernetes-deploy/files/hosts.template with host names and ipaddress setup password less auth between your Ansible host and Kubernetes nodes

$ ssh-copyid root@kube-nodes?

setup Ansible inventory

kube-master.rmohan.com hostrole=master kube-node1.rmohan.com hostrole=node kube-node2.rmohan.com […]

Get YAML for deployed Kubernetes

ombining other answers, this is what I came up with for bash:

for n in $(kubectl get -o=name pvc,configmap,serviceaccount,secret,ingress,service,deployment,statefulset,hpa,job,cronjob) do mkdir -p $(dirname $n) kubectl get -o=yaml –export $n > $n.yaml done kubectl get all –export=true -o yaml !/bin/env bash i=$((0)) for n in $(kubectl get -o=custom-columns=NAMESPACE:.metadata.namespace,KIND:.kind,NAME:.metadata.name pv,pvc,configmap,ingress,service,secret,deployment,statefulset,hpa,job,cronjob –all-namespaces | grep -v ‘secrets/default-token’) do […]