fix: Use insecure flag for ArgoCD repo instead of known hosts patching

Skip SSH host key verification via insecure: "true" in the repository
secret. This avoids the chicken-and-egg problem where ArgoCD syncs its
own known hosts ConfigMap and overwrites runtime patches. Remove
configmaps RBAC and ssh-keyscan logic from the init job.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Felix Wolf 2026-03-30 23:02:38 +02:00
parent 9d7b12896f
commit a9e006a250
3 changed files with 76 additions and 132 deletions

View file

@ -18,9 +18,6 @@ rules:
- apiGroups: [""]
resources: ["secrets"]
verbs: ["get", "create"]
- apiGroups: [""]
resources: ["configmaps"]
verbs: ["get", "patch"]
---
apiVersion: rbac.authorization.k8s.io/v1
@ -57,17 +54,14 @@ spec:
- |
set -e
apk add --no-cache openssh-keygen openssh-client > /dev/null 2>&1
apk add --no-cache openssh-keygen > /dev/null 2>&1
ARGOCD_NS="argocd"
REPO_SECRET="forgejo-repo"
REPO_URL="ssh://git@git.tr1ceracop.de:222/gitea_admin/k8s-and-chill.git"
FORGEJO_HOST="git.tr1ceracop.de"
FORGEJO_SSH_PORT="222"
FORGEJO_URL="https://${FORGEJO_HOST}"
FORGEJO_URL="https://git.tr1ceracop.de"
REPO_OWNER="gitea_admin"
REPO_NAME="k8s-and-chill"
KNOWN_HOSTS_CM="argocd-ssh-known-hosts-cm"
# Wait for Forgejo to be ready
echo "Waiting for Forgejo to be ready..."
@ -83,61 +77,43 @@ spec:
sleep 5
done
# Step 1: Add Forgejo SSH host key to ArgoCD known hosts
echo "Scanning Forgejo SSH host key..."
HOSTKEY=$(ssh-keyscan -p "${FORGEJO_SSH_PORT}" "${FORGEJO_HOST}" 2>/dev/null | grep -v '^#' | head -1)
if [ -z "${HOSTKEY}" ]; then
echo "Failed to scan SSH host key"
# Check if ArgoCD repo secret already exists
if kubectl get secret "${REPO_SECRET}" -n "${ARGOCD_NS}" >/dev/null 2>&1; then
echo "Secret ${REPO_SECRET} already exists in ${ARGOCD_NS}, skipping"
exit 0
fi
# Read admin credentials
ADMIN_USER=$(kubectl get secret forgejo-admin-secret -n "${NAMESPACE}" -o jsonpath='{.data.username}' | base64 -d)
ADMIN_PASS=$(kubectl get secret forgejo-admin-secret -n "${NAMESPACE}" -o jsonpath='{.data.password}' | base64 -d)
# Generate ed25519 SSH keypair
KEYDIR=$(mktemp -d)
ssh-keygen -t ed25519 -f "${KEYDIR}/id_ed25519" -N "" -q
PRIVKEY=$(cat "${KEYDIR}/id_ed25519")
PUBKEY=$(cat "${KEYDIR}/id_ed25519.pub")
rm -rf "${KEYDIR}"
# Register deploy key via Forgejo API
echo "Registering deploy key..."
HTTP_CODE=$(curl -sk -o /tmp/response.json -w "%{http_code}" \
-X POST "${FORGEJO_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/keys" \
-H "Content-Type: application/json" \
-u "${ADMIN_USER}:${ADMIN_PASS}" \
-d "{\"title\":\"argocd-deploy-key\",\"key\":\"${PUBKEY}\",\"read_only\":true}")
if [ "${HTTP_CODE}" = "201" ]; then
echo "Deploy key registered successfully"
elif [ "${HTTP_CODE}" = "422" ]; then
echo "Deploy key already exists in Forgejo (422), continuing"
else
echo "Failed to register deploy key: HTTP ${HTTP_CODE}"
cat /tmp/response.json
exit 1
fi
echo "Got host key: ${HOSTKEY}"
EXISTING=$(kubectl get configmap "${KNOWN_HOSTS_CM}" -n "${ARGOCD_NS}" -o jsonpath='{.data.ssh_known_hosts}')
if echo "${EXISTING}" | grep -qF "[${FORGEJO_HOST}]:${FORGEJO_SSH_PORT}"; then
echo "Forgejo host key already in known hosts"
else
echo "Adding Forgejo host key to ArgoCD known hosts..."
UPDATED=$(printf '%s\n%s\n' "${EXISTING}" "${HOSTKEY}")
kubectl patch configmap "${KNOWN_HOSTS_CM}" -n "${ARGOCD_NS}" \
--type merge -p "{\"data\":{\"ssh_known_hosts\":$(printf '%s' "${UPDATED}" | jq -Rs .)}}"
echo "Added Forgejo SSH host key to known hosts"
fi
# Step 2: Create deploy key and repo secret (if not already done)
if kubectl get secret "${REPO_SECRET}" -n "${ARGOCD_NS}" >/dev/null 2>&1; then
echo "Secret ${REPO_SECRET} already exists in ${ARGOCD_NS}, skipping key generation"
else
# Read admin credentials
ADMIN_USER=$(kubectl get secret forgejo-admin-secret -n "${NAMESPACE}" -o jsonpath='{.data.username}' | base64 -d)
ADMIN_PASS=$(kubectl get secret forgejo-admin-secret -n "${NAMESPACE}" -o jsonpath='{.data.password}' | base64 -d)
# Generate ed25519 SSH keypair
KEYDIR=$(mktemp -d)
ssh-keygen -t ed25519 -f "${KEYDIR}/id_ed25519" -N "" -q
PRIVKEY=$(cat "${KEYDIR}/id_ed25519")
PUBKEY=$(cat "${KEYDIR}/id_ed25519.pub")
rm -rf "${KEYDIR}"
# Register deploy key via Forgejo API
echo "Registering deploy key..."
HTTP_CODE=$(curl -sk -o /tmp/response.json -w "%{http_code}" \
-X POST "${FORGEJO_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/keys" \
-H "Content-Type: application/json" \
-u "${ADMIN_USER}:${ADMIN_PASS}" \
-d "{\"title\":\"argocd-deploy-key\",\"key\":\"${PUBKEY}\",\"read_only\":true}")
if [ "${HTTP_CODE}" = "201" ]; then
echo "Deploy key registered successfully"
elif [ "${HTTP_CODE}" = "422" ]; then
echo "Deploy key already exists in Forgejo (422), continuing"
else
echo "Failed to register deploy key: HTTP ${HTTP_CODE}"
cat /tmp/response.json
exit 1
fi
# Create ArgoCD repository secret with label
cat <<EOSECRET | kubectl apply -f -
# Create ArgoCD repository secret with insecure flag (skip host key verification)
cat <<EOSECRET | kubectl apply -f -
apiVersion: v1
kind: Secret
metadata:
@ -148,14 +124,12 @@ spec:
stringData:
type: git
url: "${REPO_URL}"
insecure: "true"
sshPrivateKey: |
$(echo "${PRIVKEY}" | sed 's/^/ /')
EOSECRET
echo "Created ArgoCD repository secret ${REPO_SECRET} in ${ARGOCD_NS}"
fi
echo "Done"
echo "Created ArgoCD repository secret ${REPO_SECRET} in ${ARGOCD_NS}"
env:
- name: NAMESPACE
valueFrom:

View file

@ -13,10 +13,3 @@ rules:
verbs:
- get
- create
- apiGroups:
- ""
resources:
- configmaps
verbs:
- get
- patch

View file

@ -15,17 +15,14 @@ spec:
- |
set -e
apk add --no-cache openssh-keygen openssh-client > /dev/null 2>&1
apk add --no-cache openssh-keygen > /dev/null 2>&1
ARGOCD_NS="argocd"
REPO_SECRET="forgejo-repo"
REPO_URL="ssh://git@git.tr1ceracop.de:222/gitea_admin/k8s-and-chill.git"
FORGEJO_HOST="git.tr1ceracop.de"
FORGEJO_SSH_PORT="222"
FORGEJO_URL="https://${FORGEJO_HOST}"
FORGEJO_URL="https://git.tr1ceracop.de"
REPO_OWNER="gitea_admin"
REPO_NAME="k8s-and-chill"
KNOWN_HOSTS_CM="argocd-ssh-known-hosts-cm"
# Wait for Forgejo to be ready
echo "Waiting for Forgejo to be ready..."
@ -41,61 +38,43 @@ spec:
sleep 5
done
# Step 1: Add Forgejo SSH host key to ArgoCD known hosts
echo "Scanning Forgejo SSH host key..."
HOSTKEY=$(ssh-keyscan -p "${FORGEJO_SSH_PORT}" "${FORGEJO_HOST}" 2>/dev/null | grep -v '^#' | head -1)
if [ -z "${HOSTKEY}" ]; then
echo "Failed to scan SSH host key"
# Check if ArgoCD repo secret already exists
if kubectl get secret "${REPO_SECRET}" -n "${ARGOCD_NS}" >/dev/null 2>&1; then
echo "Secret ${REPO_SECRET} already exists in ${ARGOCD_NS}, skipping"
exit 0
fi
# Read admin credentials
ADMIN_USER=$(kubectl get secret forgejo-admin-secret -n "${NAMESPACE}" -o jsonpath='{.data.username}' | base64 -d)
ADMIN_PASS=$(kubectl get secret forgejo-admin-secret -n "${NAMESPACE}" -o jsonpath='{.data.password}' | base64 -d)
# Generate ed25519 SSH keypair
KEYDIR=$(mktemp -d)
ssh-keygen -t ed25519 -f "${KEYDIR}/id_ed25519" -N "" -q
PRIVKEY=$(cat "${KEYDIR}/id_ed25519")
PUBKEY=$(cat "${KEYDIR}/id_ed25519.pub")
rm -rf "${KEYDIR}"
# Register deploy key via Forgejo API
echo "Registering deploy key..."
HTTP_CODE=$(curl -sk -o /tmp/response.json -w "%{http_code}" \
-X POST "${FORGEJO_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/keys" \
-H "Content-Type: application/json" \
-u "${ADMIN_USER}:${ADMIN_PASS}" \
-d "{\"title\":\"argocd-deploy-key\",\"key\":\"${PUBKEY}\",\"read_only\":true}")
if [ "${HTTP_CODE}" = "201" ]; then
echo "Deploy key registered successfully"
elif [ "${HTTP_CODE}" = "422" ]; then
echo "Deploy key already exists in Forgejo (422), continuing"
else
echo "Failed to register deploy key: HTTP ${HTTP_CODE}"
cat /tmp/response.json
exit 1
fi
echo "Got host key: ${HOSTKEY}"
EXISTING=$(kubectl get configmap "${KNOWN_HOSTS_CM}" -n "${ARGOCD_NS}" -o jsonpath='{.data.ssh_known_hosts}')
if echo "${EXISTING}" | grep -qF "[${FORGEJO_HOST}]:${FORGEJO_SSH_PORT}"; then
echo "Forgejo host key already in known hosts"
else
echo "Adding Forgejo host key to ArgoCD known hosts..."
UPDATED=$(printf '%s\n%s\n' "${EXISTING}" "${HOSTKEY}")
kubectl patch configmap "${KNOWN_HOSTS_CM}" -n "${ARGOCD_NS}" \
--type merge -p "{\"data\":{\"ssh_known_hosts\":$(printf '%s' "${UPDATED}" | jq -Rs .)}}"
echo "Added Forgejo SSH host key to known hosts"
fi
# Step 2: Create deploy key and repo secret (if not already done)
if kubectl get secret "${REPO_SECRET}" -n "${ARGOCD_NS}" >/dev/null 2>&1; then
echo "Secret ${REPO_SECRET} already exists in ${ARGOCD_NS}, skipping key generation"
else
# Read admin credentials
ADMIN_USER=$(kubectl get secret forgejo-admin-secret -n "${NAMESPACE}" -o jsonpath='{.data.username}' | base64 -d)
ADMIN_PASS=$(kubectl get secret forgejo-admin-secret -n "${NAMESPACE}" -o jsonpath='{.data.password}' | base64 -d)
# Generate ed25519 SSH keypair
KEYDIR=$(mktemp -d)
ssh-keygen -t ed25519 -f "${KEYDIR}/id_ed25519" -N "" -q
PRIVKEY=$(cat "${KEYDIR}/id_ed25519")
PUBKEY=$(cat "${KEYDIR}/id_ed25519.pub")
rm -rf "${KEYDIR}"
# Register deploy key via Forgejo API
echo "Registering deploy key..."
HTTP_CODE=$(curl -sk -o /tmp/response.json -w "%{http_code}" \
-X POST "${FORGEJO_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/keys" \
-H "Content-Type: application/json" \
-u "${ADMIN_USER}:${ADMIN_PASS}" \
-d "{\"title\":\"argocd-deploy-key\",\"key\":\"${PUBKEY}\",\"read_only\":true}")
if [ "${HTTP_CODE}" = "201" ]; then
echo "Deploy key registered successfully"
elif [ "${HTTP_CODE}" = "422" ]; then
echo "Deploy key already exists in Forgejo (422), continuing"
else
echo "Failed to register deploy key: HTTP ${HTTP_CODE}"
cat /tmp/response.json
exit 1
fi
# Create ArgoCD repository secret with label
cat <<EOSECRET | kubectl apply -f -
# Create ArgoCD repository secret with insecure flag (skip host key verification)
cat <<EOSECRET | kubectl apply -f -
apiVersion: v1
kind: Secret
metadata:
@ -106,14 +85,12 @@ spec:
stringData:
type: git
url: "${REPO_URL}"
insecure: "true"
sshPrivateKey: |
$(echo "${PRIVKEY}" | sed 's/^/ /')
EOSECRET
echo "Created ArgoCD repository secret ${REPO_SECRET} in ${ARGOCD_NS}"
fi
echo "Done"
echo "Created ArgoCD repository secret ${REPO_SECRET} in ${ARGOCD_NS}"
env:
- name: NAMESPACE
valueFrom: