Teramind

This guide explains where to place TLS settings and certificates so NextGen can securely connect to Legacy over HTTPS.

Customers running Legacy + NextGen in the same environment.

Customers using custom instance names or custom hostnames.

Teams that want TLS verification enabled for internal Legacy/NextGen traffic.

- Customers running Legacy + NextGen in the same environment.
- Customers using custom instance names or custom hostnames.
- Teams that want TLS verification enabled for internal Legacy/NextGen traffic.

Legacy hostname: <code>&lt;legacy_hostname&gt;</code> (example: <code>legacy.example.local</code>)

Legacy certificate file on host: <code>&lt;legacy_cert_path_on_host&gt;</code> (example: <code>/usr/local/teramind/conf/ssl/cert.crt</code>)

NextGen project path: <code>/usr/local/teramind/msp</code> (usually <code>/usr/local/teramind/msp</code>)

- Legacy hostname: <code>&lt;legacy_hostname&gt;</code> (example: <code>legacy.example.local</code>)
- Legacy certificate file on host: <code>&lt;legacy_cert_path_on_host&gt;</code> (example: <code>/usr/local/teramind/conf/ssl/cert.crt</code>)
- NextGen project path: <code>/usr/local/teramind/msp</code> (usually <code>/usr/local/teramind/msp</code>)

Step 1: Copy Legacy certificate to NextGen storage

Copy the Legacy certificate (or issuing CA certificate) to the NextGen storage path on the host:

mkdir -p /usr/local/teramind/msp/storage/certs

cp &lt;legacy_cert_path_on_host&gt; /usr/local/teramind/msp/storage/certs/legacy-ca.crt

Replace <code>&lt;legacy_cert_path_on_host&gt;</code> with the actual file path.

After this step, the certificate path inside NextGen containers will be:

<code>/storage/certs/legacy-ca.crt</code>

Step 2: Set NextGen TLS variables in teramind.config

<code>/usr/local/teramind/conf/teramind.config</code>

sp_v2_node_extra_ca_certs=/storage/certs/legacy-ca.crt

Apply the updated <code>teramind.config</code> so values are written into <code>/usr/local/teramind/msp/.env</code>:

sudo /usr/local/teramind/scripts/tm.pl -func nn

docker compose up -d --force-recreate server-1 ws-1 export-server export-manager background-sync priority-background-sync background-event-sync mail-manager deployment-manager

Use either of these simple product checks:

1. Sign in to NextGen. If sign-in works, Legacy/NextGen TLS communication is working.

2. If you do not want to sign out/in, open any BI dashboard. Before the certificate fix, BI widgets show errors; after the fix, widgets load normally.

NextGen connects to Legacy over loopback (<code>127.0.0.1</code>).

The same Legacy certificate is used for both:

- External Legacy HTTPS traffic (hostname-based), and
- NextGen-to-Legacy loopback traffic.

Because of this, the Legacy certificate must include both SAN entries:

- <code>DNS:&lt;legacy_hostname&gt;</code>
- <code>IP:127.0.0.1</code>

Certificate error persists: verify the certificate file exists at <code>/storage/certs/legacy-ca.crt</code> inside NextGen containers.

Hostname mismatch: verify SAN contains the exact hostname/IP used in your deployment.

Changes not applied: rerun your apply/reconfigure step and recreate NextGen backend services.

- Certificate error persists: verify the certificate file exists at <code>/storage/certs/legacy-ca.crt</code> inside NextGen containers.
- Hostname mismatch: verify SAN contains the exact hostname/IP used in your deployment.
- Changes not applied: rerun your apply/reconfigure step and recreate NextGen backend services.

Keep TLS verification enabled and trust internal certificates via <code>msp_v2_node_extra_ca_certs</code>. Avoid disabling TLS checks.

Configuring TLS Validation Between Legacy and NextGen

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Configuring TLS Validation Between Legacy and NextGen

Introduction

Who this guide is for

What you need

Step 1: Copy Legacy certificate to NextGen storage

Step 2: Set NextGen TLS variables in teramind.config

Step 3: Apply the configuration changes

Step 4: Verify

Notes About SAN / Hostname

Troubleshooting

Security Recommendation