CapRover Management

Analyze CapRover apps, containers, cluster nodes, and deployment configuration.

Phase 1: Discovery

#!/bin/bash
CAPTAIN_URL="${CAPROVER_URL}"
TOKEN="${CAPROVER_API_TOKEN}"
BASE="${CAPTAIN_URL}/api/v2"
AUTH=(-H "x-captain-auth: ${TOKEN}" -H "Content-Type: application/json")

echo "=== All Apps ==="
curl -s "${BASE}/user/apps/appDefinitions" "${AUTH[@]}" \
  | jq -r '.data.appDefinitions[] | "\(.appName)\t\(.hasPersistentData)\t\(.instanceCount)\t\(.notExposeAsWebApp)\t\(.hasDefaultSubDomainSsl)"' \
  | column -t | head -20

echo ""
echo "=== App Details ==="
curl -s "${BASE}/user/apps/appDefinitions" "${AUTH[@]}" \
  | jq '.data.appDefinitions[] | {
      appName,
      instanceCount,
      captainDefinitionRelativeFilePath,
      hasPersistentData,
      customDomain: [.customDomain[]?.publicDomain],
      envVarCount: (.envVars | length),
      volumeCount: (.volumes | length),
      ports: [.ports[]?]
    }' | head -40

echo ""
echo "=== Cluster Nodes ==="
curl -s "${BASE}/user/system/nodes" "${AUTH[@]}" \
  | jq -r '.data.nodes[] | "\(.nodeId)\t\(.hostname)\t\(.ip)\t\(.state)\t\(.isLeader)"' \
  | column -t

echo ""
echo "=== Docker Registries ==="
curl -s "${BASE}/user/registries" "${AUTH[@]}" \
  | jq -r '.data.registries[] | "\(.id)\t\(.registryDomain)\t\(.registryUser)"' \
  | column -t

Phase 2: Analysis

#!/bin/bash
CAPTAIN_URL="${CAPROVER_URL}"
TOKEN="${CAPROVER_API_TOKEN}"
BASE="${CAPTAIN_URL}/api/v2"
AUTH=(-H "x-captain-auth: ${TOKEN}" -H "Content-Type: application/json")

echo "=== App Container Status ==="
curl -s "${BASE}/user/apps/appDefinitions" "${AUTH[@]}" \
  | jq '.data.appDefinitions[] | {
      appName,
      instanceCount,
      versions: [.versions[]? | {version, timeStamp, deployedImageName}] | last(3)
    }' | head -30

echo ""
echo "=== Custom Domains & SSL ==="
curl -s "${BASE}/user/apps/appDefinitions" "${AUTH[@]}" \
  | jq -r '.data.appDefinitions[] | select(.customDomain | length > 0) | "\(.appName)\t\(.customDomain | map(.publicDomain) | join(","))\tSSL:\(.hasDefaultSubDomainSsl)"' \
  | column -t

echo ""
echo "=== Persistent Directories ==="
curl -s "${BASE}/user/apps/appDefinitions" "${AUTH[@]}" \
  | jq -r '.data.appDefinitions[] | select(.volumes | length > 0) | "\(.appName)\t\(.volumes | map(.containerPath) | join(","))"' \
  | column -t

echo ""
echo "=== Resource Limits ==="
curl -s "${BASE}/user/apps/appDefinitions" "${AUTH[@]}" \
  | jq '.data.appDefinitions[] | select(.containerHttpPort != null) | {
      appName,
      containerHttpPort: .containerHttpPort,
      httpPort: .containerHttpPort,
      websocketSupport: .websocketSupport
    }'

echo ""
echo "=== System Info ==="
curl -s "${BASE}/user/system/info" "${AUTH[@]}" \
  | jq '.data | {
      hasRootSsl: .hasRootSsl,
      rootDomain: .rootDomain,
      captainVersion: .captainVersion,
      dockerVersion: .dockerVersion
    }'

echo ""
echo "=== Nginx Config Status ==="
curl -s "${BASE}/user/system/nginxconfig" "${AUTH[@]}" \
  | jq '{baseConfig: (.data.baseConfig.customValue | length > 0), captainConfig: (.data.captainConfig.customValue | length > 0)}' 2>/dev/null

Output Format

CAPROVER ANALYSIS
==================
App              Instances  Domains              SSL   Volumes  Env-Vars
────────────────────────────────────────────────────────────────────────
web-app          2          app.example.com       Yes   1        8
api-server       3          api.example.com       Yes   0        12
worker           1          none                  No    2        5

Cluster: 2 nodes (1 leader) | Docker: v24.0.7 | Captain: v1.12.0
Root Domain: captain.example.com | Root SSL: Yes

Safety Rules

• Read-only: Only use GET endpoints against the CapRover API
• Never deploy, scale, or delete apps without explicit confirmation
• Env vars: Never output environment variable values, only counts
• Auth token: Keep the captain auth token secure, rotate regularly

Anti-Hallucination Rules

1. NEVER assume resource names — always discover via CLI/API in Phase 1 before referencing in Phase 2.
2. NEVER fabricate metric names or dimensions — verify against the service documentation or --help output.
3. NEVER mix CLI commands between service versions — confirm which version/API you are targeting.
4. ALWAYS use the discovery → verify → analyze chain — every resource referenced must have been discovered first.
5. ALWAYS handle empty results gracefully — an empty response is valid data, not an error to retry.

Counter-Rationalizations

Shortcut	Counter	Why
"I'll skip discovery and check known resources"	Always run Phase 1 discovery first	Resource names change, new resources appear — assumed names cause errors
"The user only asked for a quick check"	Follow the full discovery → analysis flow	Quick checks miss critical issues; structured analysis catches silent failures
"Default configuration is probably fine"	Audit configuration explicitly	Defaults often leave logging, security, and optimization features disabled
"Metrics aren't needed for this"	Always check relevant metrics when available	API/CLI responses show current state; metrics reveal trends and intermittent issues
"I don't have access to that"	Try the command and report the actual error	Assumed permission failures prevent useful investigation; actual errors are informative