# Unable to register pmm-client with pmm-server **URL:** \ **Category:** Uncategorized\ **Tags:** pmm, percona\ **Created:** [May 30, 2022, 6:05pm UTC](https://forums.percona.com/t/unable-to-register-pmm-client-with-pmm-server/15896 "2022-05-30T18:05:09Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Sanjana\_Chandrasheka](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Sanjana\_Chandrasheka](https://forums.percona.com/u/Sanjana_Chandrasheka)\ **Post date:** [May 30, 2022, 6:05pm UTC](https://forums.percona.com/t/unable-to-register-pmm-client-with-pmm-server/15896/1 "2022-05-30T18:05:09Z")
Hello everyone, I have been able to successfully register my client to server using _pmm-admin config --server-insecure-tls --server-url=[https://admin:admin@X.X.X.X:443](https://admin:admin@X.X.X.X:443)_ But as I was reading the doc , I was exploring different ways in which I can make an ssl connection between pmm-client and pmm-server, so i found this particular command : pmm-admin config --server-url=[https://admin:admin@10.57.58.215](https://admin:admin@10.57.58.215) But I am getting the following error, Failed to register pmm-agent on PMM Server: Post “[https://10.57.58.215:443/v1/management/Node/Register](https://10.57.58.215:443/v1/management/Node/Register)”: x509: cannot validate certificate for 10.57.58.215 because it doesn’t contain any IP SANs. I want to establish an ssl connection between my client and server , how can do that? ---
**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\ **Post date:** [May 31, 2022, 1:01pm UTC](https://forums.percona.com/t/unable-to-register-pmm-client-with-pmm-server/15896/2 "2022-05-31T13:01:51Z")
The default SSL certificate is self-signed which requires you to use the `--server-insecure-tls` flag. You can use your own SSL certificates, signed by a 3rd party (LetsEncrypt for example) which does not need the insecure flag. Check [Database Performance Blog – Percona](http://percona.com/blog) for a HOWTO on this. ---
**Author:** ![Sanjana\_Chandrasheka](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Sanjana\_Chandrasheka](https://forums.percona.com/u/Sanjana_Chandrasheka)\ **Post date:** [May 31, 2022, 1:28pm UTC](https://forums.percona.com/t/unable-to-register-pmm-client-with-pmm-server/15896/3 "2022-05-31T13:28:13Z")
Thanks for the information. So if I use `--server-insecure-tls` for connecting my pmm-client with pmm-server it means that I am using the default ssl certs present in _/srv/nginx_ inside my docker right ? Either ways (using default certificate or generating my own) the connection between pmm-client and pmm-server will be ssl , is my understanding correct ? ---
**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\ **Post date:** [May 31, 2022, 1:57pm UTC](https://forums.percona.com/t/unable-to-register-pmm-client-with-pmm-server/15896/4 "2022-05-31T13:57:14Z")
> [@Sanjana\_Chandrasheka](#): > > Either ways (using default certificate or generating my own) the connection between pmm-client and pmm-server will be ssl Yes, that is correct. ---
**Author:** ![Sanjana\_Chandrasheka](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@Sanjana\_Chandrasheka](https://forums.percona.com/u/Sanjana_Chandrasheka)\ **Post date:** [May 31, 2022, 2:05pm UTC](https://forums.percona.com/t/unable-to-register-pmm-client-with-pmm-server/15896/5 "2022-05-31T14:05:06Z")
okay, thank you @matthewb