ClusterWare User Guide
  • 👋Welcome to ClusterWare!
  • Learning Path
    • 🔭Overview
    • 1️⃣Create a distributed NodeJS application in 10 minutes
      • Step 1: Create a new cluster
      • Step 2: Onboard servers to ClusterWare
      • Step 3: Install server software
      • Step 4: Create application instances
      • Step 5: Import application source code
      • Step 6: Start the application
      • Step 7: Create and start application load balancer
    • 2️⃣Uniformly secure access to your infrastructure
      • Step 1: Create Security Policy
      • Step 2: Install Firewall
      • Step 3: Apply Security Policies
    • 3️⃣Secure the data in-transit with SSL
      • Step 1: Gateway Security
      • Step 2: Endpoints Security
    • 4️⃣Eliminate a single point of failure in 10 minutes
      • Step 1: Onboard a new server
      • Step 2: Install Niginx
      • Step 3: Configure DNS
      • Step 4: Create and start the failover load balancer
      • Step 5: Run a load balancer outage experiment
  • Fundamentals
    • 🧩Sync, Insights, Tasks
    • 🤖Supported Technologies
    • 🛡️Server Authentication Methods
    • 💡Connectivity Troubleshooting
  • Services
    • Clusters
      • Cluster Selection & Creation
      • Editing Cluster
      • Notification Subscriptions
      • Auto-deployment (CI/CD)
    • Dashboard
      • Load Balancers & Applications
    • Servers
      • Create/Edit Server
      • Status
      • Software
      • Security
        • Enabling Non-Root Firewall Status Checking
        • Changing Firewall Status
        • Applying Security Policies
      • Metrics
      • Alerts
    • Applications
      • Create/Edit Application
      • Status
      • Git
      • Output Log / Error Log
      • Metrics
      • Alerts
    • Load Balancing
      • Create/Edit Load Balancer
      • Status
      • Gateway Security
      • Endpoint Security
    • Security Policies
      • Create/Edit Security Policy
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  • 1. Try to SSH into the server with the same credentials as configured in ClusterWare
  • 2. Check firewall configuration or disable the firewall temporarily to eliminate firewall as the root cause
  1. Fundamentals

Connectivity Troubleshooting

PreviousServer Authentication MethodsNextClusters

Last updated 11 months ago

If your sync tasks fail due to:

  • Time outs

  • Authentication failures

please check the steps below to resolve the issue:

1. Try to SSH into the server with the same credentials as configured in ClusterWare

For Password Authentication:

ssh -o PreferredAuthentications=password -o PubkeyAuthentication=no -o PasswordAuthentication=yes username@hostname.com -p 22
Password: ************

For Public Key Authentication:

ssh -i path/to/private-key.pem username@hostname.com -p 22

2. Check firewall configuration or disable the firewall temporarily to eliminate firewall as the root cause

Check UFW status

sudo ufw status
Status: inactive

Check UFW traffic rules for active firewall

sudo ufw status
Status: active

sudo ufw show added
Added user rules:
ufw allow ...
ufw deny ...

Disable UFW

sudo ufw disable
Firewall stopped and disabled on system startup

Remember to re-enable the firewall when the connectivity issues are resolved (you can do that with ClusterWare too)

💡