Updating the Jenkins Version

Common location of jenkins war file on ubuntu server is:

cd /usr/share/jenkins/

Stop the jenkins server

$ sudo service jenkins stop

Move existing jenkins war file

$ sudo mv jenkins.war jenkins.war.old

Download latest/specific jenkins war file

$ sudo wget https://updates.jenkins-ci.org/latest/jenkins.war # For latest

$ sudo wget https://updates.jenkins-ci.org/download/war/2.222.4/jenkins.war # for 2.222.4

Start the Jenkins server

$ sudo service jenkins start

Comments

Password reset too simplistic/systematic issue

Some time when we try to reset the password of our user in linux it will show as simple and systematic as below: BAD PASSWORD: it is too simplistic/systematic no matter how hard password you give it will show the same. Solution: ######### Check if your password is Ok with the below command, jino@ndz~$ echo 'D7y8HK#56r89lj&8*&^%&^%#56rlKJ!789l' | cracklib-check D7y8HK#56r89lj&8*&^%&^%#56rlKJ!789l: it is too simplistic/systematic Now Create a password with the below command : jino@ndz~$ echo $(tr -dc '[:graph:]' 7\xi%!W[y*S}g-H7W~gbEB4cv,9:E:K; You can see that this password will be ok with the cracklib-check. jino@ndz~$ echo '7\xi%!W[y*S}g-H7W~gbEB4cv,9:E:K;' | cracklib-check 7\xi%!W[y*S}g-H7W~gbEB4cv,9:E:K;: OK Thats all, Thanks.

Nginx Ingress controller setup in K8S MultiNode Cluster with HA-Proxy as External LB

https://github.com/nginxinc/kubernetes-ingress/blob/master/docs/installation.md Pre-requisites: ############### >> K8s cluster setup with 1 Master and 2 Worker nodes. >> Deployed an application with Deployment name "client-sb" >> Also you need to create an HA-proxy server by spinning an Ec2 instance. After login the Ha-proxy server. # yum install haproxy # vi /etc/haproxy/haproxy.cfg delete everything after the global and defaults starting from "Main front-end which proxys to the backend" paste the below code in the end of the file: --------------------- frontend http_front bind *:80 stats uri /haproxy?stats default_backend http_back backend http_back balance roundrobin server kube 10.0.1.14:80 server kube 10.0.1.12:80 --------------------- # systemctl status haproxy # systemctl enable haproxy # systemctl start haproxy 1. Create a Namespace, a SA, the Default Secret, the Customization Confi...

Running K8s cluster service kubelet with Swap Memory Enabled

For enabling swap memory check the below link : https://jinojoseph.blogspot.com/2019/10/enable-swap-memory-using-swapfile-in.html # sudo vi /etc/systemd/system/kubelet.service.d/10-kubeadm.conf Add the KUBELET_EXTRA_ARGS line as below: ---------------------------------------- Environment="KUBELET_EXTRA_ARGS=--fail-swap-on=false" ExecStart= ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS Now kubelet.service changed on disk. Run 'systemctl daemon-reload' to reload units # sudo systemctl daemon-reload # sudo systemctl restart kubelet # sudo systemctl status kubelet That is all cheers :p

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