On-Prem without DNS Installation Guidelines

Overview

• MOSIP modules are deployed in the form of microservices in kubernetes cluster.

• Wireguard is used as a trust network extension to access the admin, control, and observation pane.

• It is also used for the on-the-field registrations.

• MOSIP uses Nginx server for:

  • SSL termination

  • Reverse Proxy

  • CDN/Cache management

  • Loadbalancing

• Kubernetes cluster is administered using the Rancher and rke tools.

• In V3, we have two Kubernetes clusters:

Observation cluster - This cluster is a part of the observation plane and it helps in administrative tasks. By design, this is kept independent of the actual cluster as a good security practice and to ensure clear segregation of roles and responsibilities. As a best practice, this cluster or it's services should be internal and should never be exposed to the external world.

• Rancher is used for managing the MOSIP cluster.

• Keycloak in this cluster is used for cluster user access management.

• It is recommended to configure log monitoring and network monitoring in this cluster.

• In case you have an internal container registry, then it should run here.

MOSIP cluster - This cluster runs all the MOSIP components and certain third party components to secure the cluster, API’s and data.

• MOSIP External Components

• MOSIP Services

Architecture diagram

Deployment repos

• k8s-infra : contains the scripts to install and configure Kubernetes cluster with required monitoring, logging and alerting tools.

• mosip-infra : contains the deployment scripts to run charts in defined sequence.

• mosip-config : contains all the configuration files required by the MOSIP modules.

• mosip-helm : contains packaged helm charts for all the MOSIP modules.

Pre-requisites

Hardware requirements

• VM’s required can be with any OS as per convenience.

• Here, we are referring to Ubuntu OS throughout this installation guide.

Network requirements

• All the VM's should be able to communicate with each other.

• Need stable Intra network connectivity between these VM's.

• All the VM's should have stable internet connectivity for docker image download (in case of local setup ensure to have a locally accessible docker registry).

• Server Interface requirement as mentioned in below table:

DNS requirements

Certificate requirements

As only secured https connections are allowed via nginx server will need below mentioned valid ssl certificates:

• One valid wildcard ssl certificate related to domain used for accessing Observation cluster, this needs to be stored inside the nginx server VM for Observation cluster. In above e.g.: *.org.net is the similar example domain.

• One valid wildcard ssl certificate related to domain used for accesing Mosip cluster, this needs to be stored inside the nginx server VM for mosip cluster. In above e.g.: *.sandbox.xyz.net is the similar example domain.

Tools to be installed in Personel Computers for complete deployment

• kubectl- any client version above 1.19

• helm- any client version above 3.0.0 and add below repos as well:

helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo add mosip https://mosip.github.io/mosip-helm

• Istioctl : version: 1.15.0

• rke : version: 1.3.10

• [Ansible](https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html: version > 2.12.4

• Create a directory as MOSIP in your PC and:

  • clone k8’s infra repo with tag : 1.2.0.1-B2 (whichever is the latest version) inside mosip directory. git clone https://github.com/mosip/k8s-infra -b v1.2.0.1-B2

  • clone mosip-infra with tag : 1.2.0.1-B2 (whichever is the latest version) inside mosip directory. git clone https://github.com/mosip/mosip-infra -b v1.2.0.1-B2

  • Set below mentioned variables in bashrc

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  export MOSIP_ROOT=<location of mosip directory>
  export K8_ROOT=$MOSIP_ROOT/k8s-infra
  export INFRA_ROOT=$MOSIP_ROOT/mosip-infra

  source .bashrc

  Note: Above mentioned environment variables will be used throughout the installation to move between one directory to other to run install scripts.

Installation

Wireguard

A Wireguard bastion host (Wireguard server) provides secure private channel to access MOSIP cluster. The host restricts public access, and enables access to only those clients who have their public key listed in Wireguard server. Wireguard listens on UDP port51820.

Setup Wireguard VM and wireguard bastion server

• Create a Wireguard server VM with above mentioned Hardware and Network requirements.

• Open ports and Install docker on Wireguard VM.

  • cd $K8_ROOT/wireguard/

  • create copy of hosts.ini.sample as hosts.ini and update the required details for wireguard VM\

    cp hosts.ini.sample hosts.ini

  • execute ports.yml to enable ports on VM level using ufw:

    ansible-playbook -i hosts.ini ports.yaml

Note:

• Permission of the pem files to access nodes should have 400 permission. sudo chmod 400 ~/.ssh/privkey.pem

• These ports are only needed to be opened for sharing packets over UDP.

• Take necessary measure on firewall level so that the Wireguard server can be reachable on 51820/udp.

* execute docker.yml to install docker and add user to docker group:

    `ansible-playbook -i hosts.ini docker.yaml`
    

• Setup Wireguard server

  • SSH to wireguard VM

  • Create directory for storing wireguard config files. mkdir -p wireguard/config

  • Install and start wireguard server using docker as given below:

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  sudo docker run -d \
  --name=wireguard \
  --cap-add=NET_ADMIN \
  --cap-add=SYS_MODULE \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Asia/Calcutta \
  -e PEERS=30 \
  -p 51820:51820/udp \
  -v /home/ubuntu/wireguard/config:/config \
  -v /lib/modules:/lib/modules \
  --sysctl="net.ipv4.conf.all.src_valid_mark=1" \
  --restart unless-stopped \
  ghcr.io/linuxserver/wireguard

Note:

• Increase the no. of peers above in case more than 30 wireguard client confs (-e PEERS=30) are needed.

• Change the directory to be mounted to wireguard docker as per need. All your wireguard confs will be generated in the mounted directory (-v /home/ubuntu/wireguard/config:/config).

Setup Wireguard Client in your PC

• Install Wireguard client in your PC.

• Assign wireguard.conf:

  • SSH to the wireguard server VM.

  • cd /home/ubuntu/wireguard/config

  • assign one of the PR for yourself and use the same from the PC to connect to the server.

    • create assigned.txt file to assign the keep track of peer files allocated and update every time some peer is allocated to someone.

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    peer1 :   peername
    peer2 :   xyz

    • use ls cmd to see the list of peers.

    • get inside your selected peer directory, and add mentioned changes in peer.conf:

      • cd peer1

      • nano peer1.conf

        • Delete the DNS IP.

        • Update the allowed IP's to subnets CIDR ip . e.g. 10.10.20.0/23

      • Share the updated peer.conf with respective peer to connect to wireguard server from Personel PC.

• add peer.conf in your PC’s /etc/wireguard directory as wg0.conf.

• start the wireguard client and check the status:

sudo systemctl start wg-quick@wg0
sudo systemctl status wg-quick@wg0

• Once connected to wireguard, you should be now able to login using private IP’s.

Observation K8s Cluster setup and configuration

Observation K8s Cluster setup

• Install all the required tools mentioned in pre-requisites for PC.

  • kubectl

  • helm

  • ansible

  • rke (version 1.3.10)

• Setup Observation Cluster node VM’s as per the hardware and network requirements as mentioned above.

• Setup passwordless SSH into the cluster nodes via pem keys. (Ignore if VM’s are accessible via pem’s).

  • Generate keys on your PC ssh-keygen -t rsa

  • Copy the keys to remote observation node VM’s ssh-copy-id <remote-user>@<remote-ip>

  • SSH into the node to check password-less SSH ssh -i ~/.ssh/<your private key> <remote-user>@<remote-ip>

Note:

• Make sure the permission for privkey.pem for ssh is set to 400.

• Run env-check.yaml to check if cluster nodes are fine and do not have known issues in it.

  • cd $K8_ROOT/rancher/on-prem

  • create copy of hosts.ini.sample as hosts.ini and update the required details for Observation k8 cluster nodes.

    • cp hosts.ini.sample hosts.ini

    • ansible-playbook -i hosts.ini env-check.yaml

    • This ansible checks if localhost mapping is already present in /etc/hosts file in all cluster nodes, if not it adds the same.

• Open ports and install docker on Observation K8 Cluster node VM’s.

  • cd $K8_ROOT/rancher/on-prem

  • Ensure that hosts.ini is updated with nodal details.

  • Update vpc_ip variable in ports.yaml with vpc CIDR ip to allow access only from machines inside same vpc.

  • Execute ports.yml to enable ports on VM level using ufw:

    • ansible-playbook -i hosts.ini ports.yaml

  • Disable swap in cluster nodes. (Ignore if swap is already disabled)

    • ansible-playbook -i hosts.ini swap.yaml

  • execute docker.yml to install docker and add user to docker group:

    • ansible-playbook -i hosts.ini docker.yaml

• Creating RKE Cluster Configuration file

  • rke config

  • Command will prompt for nodal details related to cluster, provide inputs w.r.t below mentioned points:

    • SSH Private Key Path :

    • Number of Hosts:

    • SSH Address of host :

    • SSH User of host :

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    Is host (<node1-ip>) a Control Plane host (y/n)? [y]: y
    Is host (<node1-ip>) a Worker host (y/n)? [n]: y
    Is host (<node1-ip>) an etcd host (y/n)? [n]: y

    • Make all the nodes Worker host by default.

    • To create an HA cluster, specify more than one host with role Control Plane and etcd host.

  • Network Plugin Type : Continue with canal as default network plugin.

  • For rest of other configurations, opt the required or default value.

• As result of rke config command cluster.yml file will be generated inside same directory, update the below mentioned fields:

  • nano cluster.yml

    • Remove the default Ingress install

    Copy

    ingress:
    provider: none

  • Add the name of the kubernetes cluster

    • cluster_name: sandbox-name

• For production deployments edit the cluster.yml, according to this RKE Cluster Hardening Guide.

• Setup up the cluster:

  • Once cluster.yml is ready, you can bring up the kubernetes cluster using simple command.

    • This command assumes the cluster.yml file is in the same directory as where you are running the command.

    • rke up

    Copy

    INFO[0000] Building Kubernetes cluster
    INFO[0000] [dialer] Setup tunnel for host [10.0.0.1]
    INFO[0000] [network] Deploying port listener containers   
    INFO[0000] [network] Pulling image [alpine:latest] on host [10.0.0.1]
    ...
    INFO[0101] Finished building Kubernetes cluster successfully
    ```
    * The last line should read `Finished building Kubernetes cluster` successfully to indicate that your cluster is ready to use.

  • As part of the Kubernetes creation process, a kubeconfig file has been created and written at kube_config_cluster.yml, which can be used to start interacting with your Kubernetes cluster.

  • Copy the kubeconfig files

  Copy

  cp kube_config_cluster.yml $HOME/.kube/<cluster_name>_config
  chmod 400 $HOME/.kube/<cluster_name>_config

  • To access the cluster using kubeconfig file use any one of the below method:

    • cp $HOME/.kube/<cluster_name>_config $HOME/.kube/config Alternatively

    • export KUBECONFIG="$HOME/.kube/<cluster_name>_config

  • Test cluster access:

    • kubect get nodes

      • Command will result in details of the nodes of the Observation cluster.

  • Save your files

    • Save a copy of the following files in a secure location, they are needed to maintain, troubleshoot and upgrade your cluster.

      • cluster.yml: The RKE cluster configuration file.

      • kube_config_cluster.yml: The Kubeconfig file for the cluster, this file contains credentials for full access to the cluster.

      • cluster.rkestate: The Kubernetes Cluster State file, this file contains credentials for full access to the cluster.

  • In case not having Public DNS system add the custom DNS configuration for the cluster.

    • Check whether coredns pods are up and running in your cluster via the below command:

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    kubectl -n kube-system get pods -l k8s-app=kube-dns

    • Update the IP address and domain name in the below DNS hosts template and add it in the coredns configmap Corefile key in the kube-system namespace.

    Copy

    hosts {
      <INTERNAL_IP_OF_OBS_NGINX_NODE>    rancher.xyz.net keycloak.xyz.net
      fallthrough
    }

    • Update coredns configmap via below command.

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    kubectl -n kube-system edit cm coredns

    • Check whether the DNS changes are correctly updated in coredns configmap.

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    kubectl -n kube-system get cm coredns -o yaml

    • Restart the coredns pod in the kube-system namespace.

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    kubectl -n kube-system rollout restart deploy coredns coredns-autoscaler

    • Check status of coredns restart.

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    kubectl -n kube-system rollout status deploy coredns
    kubectl -n kube-system rollout status coredns-autoscaler

Observation K8s Cluster Ingress and Storage class setup

Once the rancher cluster is ready, we need ingress and storage class to be set for other applications to be installed.

• Nginx Ingress Controller: used for ingress in rancher cluster.

cd $K8_ROOT/rancher/on-prem
helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
helm repo update
helm install \                                                                                                             
  ingress-nginx ingress-nginx/ingress-nginx \
  --namespace ingress-nginx \
  --version 4.0.18 \
  --create-namespace  \
  -f ingress-nginx.values.yaml

this will install ingress in ingress-nginx namespace of rancher cluster.

• Storage class setup: Longhorn creates a storage class in the cluster for creating pv (persistence volume) and pvc (persistence volume claim).

Pre-requisites:

cd $K8_ROOT/longhorn
./pre_install.sh

Install Longhorn via helm

• ./install.sh

• Note: Values of below mentioned parameters are set as by default Longhorn installation script:

  • PV replica count is set to 1. Set the replicas for the storage class appropriately.

    Copy

    persistence.defaultClassReplicaCount=1
    defaultSettings.defaultReplicaCount=1

  • Total available node CPU allocated to each instance-manager pod in the longhorn-system namespace.

  Copy

  guaranteedEngineManagerCPU: 5
  guaranteedReplicaManagerCPU: 5   

  • The value "5" means 5% of the total available node CPU.

  • This value should be fine for sandbox and pilot but you may have to increase the default to "12" for production.

  • The value can be updated on Longhorn UI after installation.

• Access the Longhorn dashboard from Rancher UI once installed.

• Setup Backup : In case you want to backup the pv data from longhorn to s3 periodically follow instructions. (Optional, ignore if not required)

Setting up nginx server for Observation K8s Cluster

• For Nginx server setup we need ssl certificate, add the same into Nginx server.

• SSL certificates can be generated in multiple ways. Either via lets encrypt if you have public DNS or via openssl certs when you don't have Public DNS.

  • Letsencrypt: Generate wildcard ssl certificate having 3 months validity when you have public DNS system using below steps.

    • SSH into the nginx server node.

    • Install Pre-requisites

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    sudo apt update -y
    sudo apt-get install software-properties-common -y
    sudo add-apt-repository ppa:deadsnakes/ppa
    sudo apt-get update -y
    sudo apt-get install python3.8 -y
    sudo apt install letsencrypt -y
    sudo apt install certbot python3-certbot-nginx -y

    • Generate wildcard SSL certificates for your domain name.

    • sudo certbot certonly --agree-tos --manual --preferred-challenges=dns -d *.org.net

    • replace org.net with your domain.

    • The default challenge HTTP is changed to DNS challenge, as we require wildcard certificates.

    • Create a DNS record in your DNS service of type TXT with host _acme-challenge.org.net, with the string prompted by the script.

    • Wait for a few minutes for the above entry to get into effect. Verify: host -t TXT _acme-challenge.org.net

    • Press enter in the certbot prompt to proceed.

    • Certificates are created in /etc/letsencrypt on your machine.

    • Certificates created are valid for 3 months only.

    • Wildcard SSL certificate renewal. This will increase the validity of the certificate for next 3 months.

  • Openssl : Generate wildcard ssl certificate using openssl in case you don't have public DNS using below steps. (Ensure to use this only in development env, not suggested for Production env).

    • Install docker on nginx node.

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    sudo apt-get update --fix-missing
    sudo apt install docker.io -y
    sudo systemctl restart docker

    • Generate a self-signed certificate for your domain, such as *.sandbox.xyz.net.

    • Execute the following command to generate a self-signed SSL certificate. Prior to execution, kindly ensure to update environmental variables & rancher domain passed to openssl command:

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     mkdir -p /etc/ssl/certs/
     export VALIDITY=700 
     export COUNTRY=IN 
     export STATE=KAR
     export LOCATION=BLR
     export ORG=MOSIP
     export ORG_UNIT=MOSIP
     export COMMON_NAME=*.xyz.net
     
     openssl req -x509 -nodes -days $VALIDITY \
       -newkey rsa:2048 -keyout /etc/ssl/certs/tls.key -out /etc/ssl/certs/tls.crt \
       -subj "/C=$COUNTRY/ST=$STATE/L=$LOCATION/O=$ORG/OU=$ORG_UNIT/CN=$COMMON_NAME" \
       -addext "subjectAltName = DNS:rancher.xyz.net, DNS:*.xyz.net"

    • Above command will generate certs in below specified location. Use it when prompted during nginx installation.

      • fullChain path: /etc/ssl/certs/tls.crt.

      • privKey path: /etc/ssl/private/tls.key.

• Install nginx:

  • Login to nginx server node.

  • Clone k8s-infra

  Copy

  cd $K8_ROOT/rancher/on-prem/nginx
  sudo ./install.sh

  • Provide below mentioned inputs as and when promted

    • Rancher nginx ip : internal ip of the nginx server VM.

    • SSL cert path : path of the ssl certificate to be used for ssl termination.

    • SSL key path : path of the ssl key to be used for ssl termination.

    • Cluster node ip's : ip’s of the rancher cluster node

• Restart nginx service.

sudo systemctl restart nginx

• Post installation check:

  • sudo systemctl status nginx

• Steps to Uninstall nginx (in case required) sudo apt purge nginx nginx-common

• DNS mapping:

  • Once nginx server is installed successfully, create DNS mapping for rancher cluster related domains as mentioned in DNS requirement section. (rancher.org.net, keycloak.org.net)

  • In case used Openssl for wildcard ssl certificate add DNS entries in local hosts file of your system.

    • For example: /etc/hosts files for Linux machines.

    Copy

     <INTERNAL_IP_OF_OBS_NGINX_NODE>    rancher.xyz.net keycloak.xyz.net

Observation K8's Cluster Apps Installation

Rancher UI: Rancher provides full CRUD capability of creating and managing kubernetes cluster.

• Install rancher using Helm, update hostname, & add privateCA to true in rancher-values.yaml, and run the following command to install.

cd $K8_ROOT/rancher/rancher-ui
helm repo add rancher https://releases.rancher.com/server-charts/stable
helm repo update
kubectl create ns cattle-system
kubectl -n cattle-system create secret generic tls-ca --from-file=cacerts.pem=./tls.crt
helm install rancher rancher/rancher --version 2.6.3 \
--namespace cattle-system \
--create-namespace \
--set privateCA=true \
-f rancher-values.yaml

• Login:

  • Open Rancher page.

  • Get Bootstrap password using

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  kubectl get secret --namespace cattle-system bootstrap-secret -o go-template='{{ .data.bootstrapPassword|base64decode}}{{ "\n" }}'

  Assign a password. IMPORTANT: makes sure this password is securely saved and retrievable by Admin.

• Keycloak: Keycloak is an OAuth 2.0 compliant Identity Access Management (IAM) system used to manage the access to Rancher for cluster controls.

cd $K8_ROOT/rancher/keycloak
./install.sh <iam.host.name>

keycloak_client.json: Used to create SAML client on Keycloak for Rancher integration.

Keycloak - Rancher UI Integration

• Login as admin user in Keycloak and make sure an email id, and first name field is populated for admin user. This is important for Rancher authentication as given below.

• Enable authentication with Keycloak using the steps given here.

• In Keycloak add another Mapper for the rancher client (in Master realm) with following fields:

  • Protocol: saml

  • Name: username

  • Mapper Type: User Property

  • Property: username

  • Friendly Name: username

  • SAML Attribute Name: username

  • SAML Attribute NameFormat: Basic

  • Specify the following mappings in Rancher's Authentication Keycloak form:

    • Display Name Field: givenName

    • User Name Field: email

    • UID Field: username

    • Entity ID Field: https://your-rancher-domain/v1-saml/keycloak/saml/metadata

    • Rancher API Host: https://your-rancher-domain

    • Groups Field: member

RBAC :

• For users in Keycloak assign roles in Rancher - cluster and project roles. Under default project add all the namespaces. Then, to a non-admin user you may provide Read-Only role (under projects).

• If you want to create custom roles, you can follow the steps given here.

• Add a member to cluster/project in Rancher:

  • Give member name exactly as username in Keycloak

  • Assign appropriate role like Cluster Owner, Cluster Viewer etc.

  • You may create new role with fine grained access control.

Certificates expiry

In case you see certificate expiry message while adding users, on local cluster run these commands:

MOSIP K8s Cluster setup

• Pre-requisites:

• Install all the required tools mentioned in Pre-requisites for PC.

  • kubectl

  • helm

helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo add mosip https://mosip.github.io/mosip-helm

• ansible

• rke (version 1.3.10)

• Setup MOSIP K8 Cluster node VM’s as per the hardware and network requirements as mentioned above.

• Run env-check.yaml to check if cluster nodes are fine and don't have known issues in it.

  • cd $K8_ROOT/rancher/on-prem

  • create copy of hosts.ini.sample as hosts.ini and update the required details for MOSIP k8 cluster nodes.

    • cp hosts.ini.sample hosts.ini

    • ansible-playbook -i hosts.ini env-check.yaml

    • This ansible checks if localhost mapping is already present in /etc/hosts file in all cluster nodes, if not it adds the same.

• Setup passwordless ssh into the cluster nodes via pem keys. (Ignore if VM’s are accessible via pem’s).

  • Generate keys on your PC

    • ssh-keygen -t rsa

  • Copy the keys to remote rancher node VM’s:

    • ssh-copy-id <remote-user>@<remote-ip>

  • SSH into the node to check password-less SSH

    • ssh -i ~/.ssh/<your private key> <remote-user>@<remote-ip>

  • Rancher UI : (deployed in Rancher K8 cluster)

• Open ports and Install docker on MOSIP K8 Cluster node VM’s.

  • cd $K8_ROOT/mosip/on-prem

  • create copy of hosts.ini.sample as hosts.ini and update the required details for wireguard VM.

    • cp hosts.ini.sample hosts.ini

  • Update vpc_ip variable in ports.yaml with vpc CIDR ip to allow access only from machines inside same vpc.

  • execute ports.yml to enable ports on VM level using ufw:

    • ansible-playbook -i hosts.ini ports.yaml

  • Disable swap in cluster nodes. (Ignore if swap is already disabled)

    • ansible-playbook -i hosts.ini swap.yaml

  • execute docker.yml to install docker and add user to docker group:

    • ansible-playbook -i hosts.ini docker.yaml

• Creating RKE Cluster Configuration file

  • rke config

  • Command will prompt for nodal details related to cluster, provide inputs w.r.t below mentioned points:

    • SSH Private Key Path :

    • Number of Hosts:

    • SSH Address of host :

    • SSH User of host :

    Copy

    Is host (<node1-ip>) a Control Plane host (y/n)? [y]: y
    Is host (<node1-ip>) a Worker host (y/n)? [n]: y
    Is host (<node1-ip>) an etcd host (y/n)? [n]: y

    • Make all the nodes Worker host by default.

    • To create an HA cluster, specify more than one host with role Control Plane and etcd host.

  • Network Plugin Type : Continue with canal as default network plugin.

  • For rest for other configuration opt the required or default value.

• As result of rke config command cluster.ymlfile will be generated inside same directory, update the below mentioned fields:

  • nano cluster.yml

  • Remove the default Ingress install

  Copy

  ingress:
  provider: none

  • Add the name of the kubernetes cluster

  Copy

  `cluster_name: sandbox-name`

  • For production deplopyments edit the cluster.yml, according to this RKE Cluster Hardening Guide.

• Setup up the cluster:

  • Once cluster.yml is ready, you can bring up the kubernetes cluster using simple command.

    • This command assumes the cluster.yml file is in the same directory as where you are running the command.

      • rke up

      Copy

      INFO[0000] Building Kubernetes cluster
      INFO[0000] [dialer] Setup tunnel for host [10.0.0.1]
      INFO[0000] [network] Deploying port listener containers
      INFO[0000] [network] Pulling image [alpine:latest] on host [10.0.0.1]
      ...
      INFO[0101] Finished building Kubernetes cluster successfully

    • The last line should read Finished building Kubernetes cluster successfully to indicate that your cluster is ready to use.

    • Copy the kubeconfig files

      Copy

      cp kube_config_cluster.yml $HOME/.kube/<cluster_name>_config
      chmod 400 $HOME/.kube/<cluster_name>_config

  • To access the cluster using kubeconfig filr use any one of the below method:

  • cp $HOME/.kube/<cluster_name>_config $HOME/.kube/config

Alternatively

* `export KUBECONFIG="$HOME/.kube/<cluster_name>_config`

• Test cluster access:

  • kubect get nodes

  • Command will result in details of the nodes of the rancher cluster.

• Save Your files

  • Save a copy of the following files in a secure location, they are needed to maintain, troubleshoot and upgrade your cluster.:

    • cluster.yml: The RKE cluster configuration file.

    • kube_config_cluster.yml: The Kubeconfig file for the cluster, this file contains credentials for full access to the cluster.

    • cluster.rkestate: The Kubernetes Cluster State file, this file contains credentials for full access to the cluster.

• In case not having Public DNS system add the custom DNS configuration for the cluster.

  • Check whether coredns pods are up and running in your cluster via the below command:

  Copy

  kubectl -n kube-system get pods -l k8s-app=kube-dns

  • Update the IP address and domain name in the below DNS hosts template and add it in the coredns configmap Corefile key in the kube-system namespace.

  Copy

  hosts {
    <PUBLIC_IP_OF_MOSIP_NGINX_NODE>    api.sandbox.xyz.net resident.sandbox.xyz.net esignet.sandbox.xyz.net prereg.sandbox.xyz.net healthservices.sandbox.xyz.net
    <INTERNAL_IP_OF_MOSIP_NGINX_NODE>  sandbox.xyz.net api-internal.sandbox.xyz.net activemq.sandbox.xyz.net kibana.sandbox.xyz.net regclient.sandbox.xyz.net admin.sandbox.xyz.net minio.sandbox.xyz.net iam.sandbox.xyz.net kafka.sandbox.xyz.net postgres.sandbox.xyz.net pmp.sandbox.xyz.net onboarder.sandbox.xyz.net smtp.sandbox.xyz.net compliance.sandbox.xyz.net
    fallthrough
  }

  • Update coredns configmap via below command.

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  kubectl -n kube-system edit cm coredns

  • Check whether the DNS changes are correctly updated in coredns configmap.

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  kubectl -n kube-system get cm coredns -o yaml

  • Restart the coredns pod in the kube-system namespace.

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  kubectl -n kube-system rollout restart deploy coredns coredns-autoscaler

  • Check status of coredns restart.

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  kubectl -n kube-system rollout status deploy coredns
  kubectl -n kube-system rollout status coredns-autoscaler

MOSIP K8 Cluster Global configmap, Ingress and Storage Class setup

Global configmap: Global configmap contains the list of neccesary details to be used throughout the namespaces of the cluster for common details.

• cd $K8_ROOT/mosip

• Copy global_configmap.yaml.sample to global_configmap.yaml.

• Update the domain names in global_configmap.yaml and run.

• kubectl apply -f global_configmap.yaml

• Istio Ingress setup: It is a service mesh for the MOSIP K8 cluster which provides transparent layers on top of existing microservices along with powerful features enabling a uniform and more efficient way to secure, connect, and monitor services.

  • cd $K8_ROOT/mosip/on-prem/istio

  • ./install.sh

  • This will bring up all the Istio components and the Ingress Gateways.

  • Check Ingress Gateway services:

    • kubectl get svc -n istio-system

      • istio-ingressgateway: external facing istio service.

      • istio-ingressgateway-internal: internal facing istio service.

      • istiod: Istio daemon for replicating the changes to all envoy filters.

• Storage class setup: Longhorn creates a storage class in the cluster for creating pv (persistence volume) and pvc (persistence volume claim).

  • Pre-requisites:

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  cd $K8_ROOT/longhorn
  ./pre_install.sh

  • Install Longhorn via helm

    • ./install.sh

    • Note: Values of below mentioned parameters are set as by default Longhorn installation script:

      • PV replica count is set to 1. Set the replicas for the storage class appropriately.

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      persistence.defaultClassReplicaCount=1
      defaultSettings.defaultReplicaCount=1

      • Total available node CPU allocated to each instance-manager pod in the longhorn-system namespace.

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      guaranteedEngineManagerCPU: 5
      guaranteedReplicaManagerCPU: 5   

      • The value "5" means 5% of the total available node CPU

      • This value should be fine for sandbox and pilot but you may have to increase the default to "12" for production.

      • The value can be updated on Longhorn UI after installation.

Import MOSIP Cluster into Rancher UI

• Login as admin in Rancher console

• Select Import Existing for cluster addition.

• Select Generic as cluster type to add.

• Fill the Cluster Name field with unique cluster name and select Create.

• You will get the kubecl commands to be executed in the kubernetes cluster. Copy the command and execute from your PC (make sure your kube-config file is correctly set to MOSIP cluster).

e.g.:
kubectl apply -f https://rancher.e2e.mosip.net/v3/import/pdmkx6b4xxtpcd699gzwdtt5bckwf4ctdgr7xkmmtwg8dfjk4hmbpk_c-m-db8kcj4r.yaml

• Wait for few seconds after executing the command for the cluster to get verified.

• Your cluster is now added to the rancher management server.

MOSIP K8 cluster Nginx server setup

• For Nginx server setup, we need ssl certificate, add the same into Nginx server.

• SSL certificates can be generated in multiple ways. Either via lets encrypt if you have public DNS or via openssl certs when you don't have Public DNS.

  • Letsencrypt: Generate wildcard ssl certificate having 3 months validity when you have public DNS system using below steps.

    • SSH into the nginx server node.

    • Install Pre-requisites

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    sudo apt update -y
    sudo apt-get install software-properties-common -y
    sudo add-apt-repository ppa:deadsnakes/ppa
    sudo apt-get update -y
    sudo apt-get install python3.8 -y
    sudo apt install letsencrypt -y
    sudo apt install certbot python3-certbot-nginx -y

    • Generate wildcard SSL certificates for your domain name.

    • sudo certbot certonly --agree-tos --manual --preferred-challenges=dns -d *.org.net

    • replace org.net with your domain.

    • The default challenge HTTP is changed to DNS challenge, as we require wildcard certificates.

    • Create a DNS record in your DNS service of type TXT with host _acme-challenge.org.net, with the string prompted by the script.

    • Wait for a few minutes for the above entry to get into effect. Verify: host -t TXT _acme-challenge.org.net

    • Press enter in the certbot prompt to proceed.

    • Certificates are created in /etc/letsencrypt on your machine.

    • Certificates created are valid for 3 months only.

    • Wildcard SSL certificate renewal. This will increase the validity of the certificate for next 3 months.

  • Openssl : Generate wildcard ssl certificate using openssl in case you don't have public DNS using below steps. (Ensure to use this only in development env, not suggested for Production env).

    • Install docker on nginx node.

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    sudo apt-get update --fix-missing
    sudo apt install docker.io -y
    sudo systemctl restart docker

    • Generate a self-signed certificate for your domain, such as *.sandbox.xyz.net.

    • Execute the following command to generate a self-signed SSL certificate. Prior to execution, kindly ensure that the environmental variables passed to the OpenSSL Docker container have been properly updated:

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    docker volume create --name gensslcerts --opt type=none --opt device=/etc/ssl --opt o=bind
    docker run -it --mount type=volume,src='gensslcerts',dst=/home/mosip/ssl,volume-driver=local \
    -e VALIDITY=700        \
    -e COUNTRY=IN          \
    -e STATE=KAR           \
    -e LOCATION=BLR        \
    -e ORG=MOSIP           \
    -e ORG_UNIT=MOSIP      \
    -e COMMON_NAME=*.sandbox.xyz.net \
    mosipdev/openssl:latest

    • Above command will generate certs in below specified location. Use it when prompted during nginx installation.

      • fullChain path: /etc/ssl/certs/nginx-selfsigned.crt.

      • privKey path: /etc/ssl/private/nginx-selfsigned.key.

• Install nginx:

  • Login to nginx server node.

  • Clone k8s-infra

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  cd $K8_ROOT/mosip/on-prem/nginx
  sudo ./install.sh

  • Provide below mentioned inputs as and when prompted

    • MOSIP nginx server internal ip

    • MOSIP nginx server public ip

    • Publically accessible domains (comma separated with no whitespaces)

    • SSL cert path

    • SSL key path

    • Cluster node ip's (comma separated no whitespace)

• When utilizing an openssl wildcard SSL certificate, please add the following server block to the nginx server configuration within the http block. Disregard this if using SSL certificates obtained through letsencrypt or for publicly available domains. Please note that this should only be used in a development environment and is not recommended for production environments.

  • nano /etc/nginx/nginx.conf

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  server{
     listen <cluster-nginx-internal-ip>:80;
     server_name iam.sandbox.xyz.net;
     location /auth/realms/mosip/protocol/openid-connect/certs {
          proxy_pass                      http://myInternalIngressUpstream;
          proxy_http_version              1.1;
          proxy_set_header                Upgrade $http_upgrade;
          proxy_set_header                Connection "upgrade";
          proxy_set_header                Host $host;
          proxy_set_header                Referer $http_referer;
          proxy_set_header                X-Real-IP $remote_addr;
          proxy_set_header                X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header                X-Forwarded-Proto $scheme;
          proxy_pass_request_headers      on;
          proxy_set_header  Strict-Transport-Security "max-age=0;";
     }
     location / { return 301 https://iam.sandbox.xyz.net; }
    }

  • Note: HTTP access is enabled for IAM because MOSIP's keymanager expects to have valid SSL certificates. Ensure to use this only for development purposes, and it is not recommended to use it in production environments.

  • Restart nginx service.

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  sudo systemctl restart nginx

• Post installation check:

  • sudo systemctl status nginx

• Steps to Uninstall nginx (in case required) sudo apt purge nginx nginx-common

• DNS mapping:

  • Once nginx server is installed successfully, create DNS mapping for rancher cluster related domains as mentioned in DNS requirement section. (rancher.org.net, keycloak.org.net)

  • In case used Openssl for wildcard ssl certificate add DNS entries in local hosts file of your system.

    • For example: /etc/hosts files for Linux machines.

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     <PUBLIC_IP>    api.sandbox.xyz.net resident.sandbox.xyz.net esignet.sandbox.xyz.net prereg.sandbox.xyz.net healthservices.sandbox.xyz.net
     <INTERNAL_IP>  sandbox.xyz.net api-internal.sandbox.xyz.net activemq.sandbox.xyz.net kibana.sandbox.xyz.net regclient.sandbox.xyz.net admin.sandbox.xyz.net minio.sandbox.xyz.net iam.sandbox.xyz.net kafka.sandbox.xyz.net postgres.sandbox.xyz.net pmp.sandbox.xyz.net onboarder.sandbox.xyz.net smtp.sandbox.xyz.net compliance.sandbox.xyz.net

• Check Overall if nginx and istio wiring is set correctly

  • Install httpbin: This utility docker returns http headers received inside the cluster. You may use it for general debugging - to check ingress, headers etc.

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  cd $K8_ROOT/utils/httpbin
  ./install.sh

  • To see what is reaching the httpbin (example, replace with your domain name):

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  curl https://api.sandbox.xyz.net/httpbin/get?show_env=true
  curl https://api-internal.sandbox.xyz.net/httpbin/get?show_env=true

Monitoring module deployment

• Prometheus and Grafana and Alertmanager tools are used for cluster monitoring.

• Select 'Monitoring' App from Rancher console -> Apps & Marketplaces.

• In Helm options, open the YAML file and disable Nginx Ingress.

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   ingressNginx:
   enabled: false

• Click on Install.

Alerting setup

Alerting is part of cluster monitoring, where alert notifications are sent to the configured email or slack channel.

• Monitoring should be deployed which includes deployment of prometheus, grafana and alertmanager.

• Create slack incoming webhook.

• After setting slack incoming webhook update slack_api_url and slack_channel_name in alertmanager.yml.

  • cd $K8_ROOT/monitoring/alerting/

  • nano alertmanager.yml

  • Update:

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  global:
  resolve_timeout: 5m
  slack_api_url: <YOUR-SLACK-API-URL>
  ...
  slack_configs:
  - channel: '<YOUR-CHANNEL-HERE>'
  send_resolved: true

• Update Cluster_name in patch-cluster-name.yaml.

• cd $K8_ROOT/monitoring/alerting/

• nano patch-cluster-name.yaml

• Update:

spec:
externalLabels:
cluster: <YOUR-CLUSTER-NAME-HERE>

• Install Default alerts along some of the defined custom alerts:

cd $K8_ROOT/monitoring/alerting/
./install.sh

• Alerting is installed.

Logging module setup and installation

MOSIP uses Rancher Fluentd and elasticsearch to collect logs from all services and reflect the same in Kibana Dashboard.

• Install Rancher FluentD system : for scraping logs outs of all the microservices from MOSIP k8 cluster.

  • Install Logging from Apps and marketplace within the Rancher UI.

  • Select Chart Version 100.1.3+up3.17.7 from Rancher console -> Apps & Marketplaces.

• Configure Rancher FluentD

  • Create clusteroutput

    • kubectl apply -f clusteroutput-elasticsearch.yaml

  • Start clusterFlow

    • kubectl apply -f clusterflow-elasticsearch.yaml

  • Install elasticsearch, kibana and Istio addons\

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    cd $K8_ROOT/logging
    ./intall.sh

  • set min_age in elasticsearch-ilm-script.sh and execute the same.

  • min_age : is the minimum no. of days for which indices will be stored in elasticsearch.

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     cd $K8_ROOT/logging
    
    ./elasticsearch-ilm-script.sh

  • MOSIP provides set of Kibana Dashboards for checking logs and throughputs.

    • Brief description of these dashboards are as follows:

      • 01-logstash.ndjson contains the logstash Index Pattern required by the rest of the dashboards.

      • 02-error-only-logs.ndjson contains a Search dashboard which shows only the error logs of the services, called MOSIP Error Logs dashboard.

      • 03-service-logs.ndjson contains a Search dashboard which show all logs of a particular service, called MOSIP Service Logs dashboard.

      • 04-insight.ndjson contains dashboards which show insights into MOSIP processes, like the number of UINs generated (total and per hr), the number of Biometric deduplications processed, number of packets uploaded etc, called MOSIP Insight dashboard.

      • 05-response-time.ndjson contains dashboards which show how quickly different MOSIP Services are responding to different APIs, over time, called Response Time dashboard.

• Import dashboards:

  • cd K8_ROOT/logging

  • ./load_kibana_dashboards.sh ./dashboards <cluster-kube-config-file>

• View dashboards

Open kibana dashboard from https://kibana.sandbox.xyz.net.

Kibana --> Menu (on top left) --> Dashboard --> Select the dashboard.

MOSIP External Dependencies setup

External Dependencies are set of external requirements that are needed for functioning of MOSIP’s core services like DB, Object Store, HSM etc.

cd $INFRA_ROOT/deployment/v3/external/all
./install-all.sh

Click here to check the detailed installation instructions of all the external components.

Configurational change in case using Openssl wildcard ssl certificate. (Only advised in development env, not recommended for Production setup)

• Add/ Update the below property in application-default.properties and comment on the below property in the *-default.properties file in the config repo.

mosip.iam.certs_endpoint=http://${keycloak.external.host}/auth/realms/mosip/protocol/openid-connect/certs

• Add/ Update the below property in the esignet-default.properties file in the config repo.

spring.security.oauth2.resourceserver.jwt.jwk-set-uri=http://${keycloak.external.host}/auth/realms/mosip/protocol/openid-connect/certs

MOSIP Modules Deployment

• Now that all the Kubernetes cluster and external dependencies are already installed, will continue with MOSIP service deployment.

• While installing a few modules, installation script prompts to check if you have public domain and valid SSL certificates on the server. Opt option n as we are using self-signed certificates. For example:

./install.sh
Do you have public domain & valid SSL? (Y/n) 
 Y: if you have public domain & valid ssl certificate
 n: If you don't have a public domain and a valid SSL certificate. Note: It is recommended to use this option only in development environments.

• Start installing mosip modules:

cd $INFRA_ROOT/deployment/v3/mosip/all
./install-all.sh

Check detailed MOSIP Modules Deployment installation steps.