refactor: remove SSH dependencies from blockchain health check

- Remove SSH-based service status checks (use RPC health instead)
- Remove SSH-based resource usage checks
- Remove SSH-based remediation functions
- Remove ssh_exec function entirely
- Script now uses only RPC endpoints for health checks
- gitea-runner no longer needs SSH access to other nodes

scripts/multi-node/blockchain-health-check.sh

@@ -53,22 +53,6 @@ log_warning() {
     echo -e "${YELLOW}$@${NC}"
 }
 
-# SSH execution helper
-ssh_exec() {
-    local node="$1"
-    local command="$2"
-    
-    # Get local IP address
-    local local_ip=$(hostname -I | awk '{print $1}')
-    
-    # If node is localhost or local IP, execute directly without SSH
-    if [ "$node" = "localhost" ] || [ "$node" = "$(hostname)" ] || [ "$node" = "$local_ip" ]; then
-        bash -c "$command" 2>&1 || return 1
-    else
-        ssh -o ConnectTimeout=10 -o StrictHostKeyChecking=no "$node" "$command" 2>&1 || return 1
-    fi
-}
-
 # Check RPC endpoint health
 check_rpc_health() {
     local node_name="$1"
@@ -85,47 +69,24 @@ check_rpc_health() {
     fi
 }
 
-# Check systemd service status
+# Check systemd service status (RPC-based only, no SSH)
 check_service_status() {
-    local node="$1"
+    local node_name="$1"
-    local service="$2"
+    local node_ip="$2"
+    local service="$3"
     
-    log "Checking ${service} status on ${node}"
+    # Skip SSH-based service checks - use RPC health instead
-    
+    log "Skipping SSH-based service check for ${service} on ${node_name} (using RPC health instead)"
-    status=$(ssh_exec "$node" "systemctl is-active ${service}" 2>&1 || echo "inactive")
+    return 0
-    
-    if [ "$status" = "active" ]; then
-        log_success "${service} is active on ${node}"
-        return 0
-    else
-        log_error "${service} is ${status} on ${node}"
-        return 1
-    fi
 }
 
-# Check resource usage
+# Check resource usage (RPC-based only, no SSH)
 check_resource_usage() {
-    local node="$1"
+    local node_name="$1"
-    
+    local node_ip="$2"
-    log "Checking resource usage on ${node}"
-    
-    memory=$(ssh_exec "$node" "free | grep Mem | awk '{printf \"%.1f\", (\$3/\$2)*100}'" 2>&1 || echo "0")
-    cpu=$(ssh_exec "$node" "top -bn1 | grep 'Cpu(s)' | awk '{print \$2}' | cut -d'%' -f1" 2>&1 || echo "0")
-    disk=$(ssh_exec "$node" "df /var/lib/aitbc | tail -1 | awk '{print \$5}' | cut -d'%' -f1" 2>&1 || echo "0")
-    
-    log "Resource usage on ${node}: CPU ${cpu}%, Memory ${memory}%, Disk ${disk}%"
-    
-    # Check thresholds
-    if [ "${disk%.*}" -gt 90 ]; then
-        log_warning "Disk usage critical on ${node}: ${disk}%"
-        return 1
-    fi
-    
-    if [ "${memory%.*}" -gt 90 ]; then
-        log_warning "Memory usage critical on ${node}: ${memory}%"
-        return 1
-    fi
     
+    # Skip SSH-based resource checks
+    log "Skipping SSH-based resource usage check for ${node_name} (not supported without SSH)"
     return 0
 }
 
@@ -142,109 +103,21 @@ check_redis_connectivity() {
     fi
 }
 
-# Remediation functions
+# Main health check for a node (RPC-based only)
-restart_rpc_service() {
-    local node="$1"
-    log "Attempting to restart aitbc-blockchain-rpc on ${node}"
-    
-    ssh_exec "$node" "systemctl restart aitbc-blockchain-rpc" 2>&1 | tee -a "${LOG_FILE}"
-    sleep 5
-    
-    if ssh_exec "$node" "systemctl is-active aitbc-blockchain-rpc" 2>&1 | grep -q "active"; then
-        log_success "Successfully restarted aitbc-blockchain-rpc on ${node}"
-        return 0
-    else
-        log_error "Failed to restart aitbc-blockchain-rpc on ${node}"
-        return 1
-    fi
-}
-
-restart_p2p_service() {
-    local node="$1"
-    log "Attempting to restart aitbc-blockchain-p2p on ${node}"
-    
-    ssh_exec "$node" "systemctl restart aitbc-blockchain-p2p" 2>&1 | tee -a "${LOG_FILE}"
-    sleep 5
-    
-    if ssh_exec "$node" "systemctl is-active aitbc-blockchain-p2p" 2>&1 | grep -q "active"; then
-        log_success "Successfully restarted aitbc-blockchain-p2p on ${node}"
-        return 0
-    else
-        log_error "Failed to restart aitbc-blockchain-p2p on ${node}"
-        return 1
-    fi
-}
-
-restart_node_service() {
-    local node="$1"
-    log "Attempting to restart aitbc-blockchain-node on ${node}"
-    
-    ssh_exec "$node" "systemctl restart aitbc-blockchain-node" 2>&1 | tee -a "${LOG_FILE}"
-    sleep 10
-    
-    if ssh_exec "$node" "systemctl is-active aitbc-blockchain-node" 2>&1 | grep -q "active"; then
-        log_success "Successfully restarted aitbc-blockchain-node on ${node}"
-        return 0
-    else
-        log_error "Failed to restart aitbc-blockchain-node on ${node}"
-        return 1
-    fi
-}
-
-# Main health check for a node
 check_node_health() {
     local node_name="$1"
     local node_ip="$2"
-    local node="${node_name}"
     
     local failures=0
     
-    # Check RPC health
+    # Check RPC health only
     if ! check_rpc_health "$node_name" "$node_ip"; then
         ((failures++))
-        log "Attempting remediation for RPC on ${node_name}"
+        log_error "RPC endpoint unhealthy on ${node_name}"
-        if restart_rpc_service "$node"; then
-            # Retry RPC check
-            if ! check_rpc_health "$node_name" "$node_ip"; then
-                log_error "RPC remediation failed on ${node_name}"
-            else
-                log_success "RPC remediation successful on ${node_name}"
-                ((failures--))
-            fi
-        fi
     fi
     
-    # Check blockchain node service
+    # Skip SSH-based service and resource checks
-    if ! check_service_status "$node" "aitbc-blockchain-node"; then
+    log "Skipping SSH-based checks for ${node_name} (RPC health only mode)"
-        ((failures++))
-        log "Attempting remediation for blockchain node on ${node_name}"
-        if restart_node_service "$node"; then
-            # Retry service check
-            if check_service_status "$node" "aitbc-blockchain-node"; then
-                log_success "Blockchain node remediation successful on ${node_name}"
-                ((failures--))
-            fi
-        fi
-    fi
-    
-    # Check P2P service
-    if ! check_service_status "$node" "aitbc-blockchain-p2p"; then
-        ((failures++))
-        log "Attempting remediation for P2P on ${node_name}"
-        if restart_p2p_service "$node"; then
-            # Retry service check
-            if check_service_status "$node" "aitbc-blockchain-p2p"; then
-                log_success "P2P remediation successful on ${node_name}"
-                ((failures--))
-            fi
-        fi
-    fi
-    
-    # Check resource usage
-    if ! check_resource_usage "$node"; then
-        ((failures++))
-        log_warning "Resource usage issues on ${node_name}"
-    fi
     
     return $failures
 }