SSH transport regression in 0.6.11

[dmacvicar]

According to #864 comments, some users are experiencing regressions when using the ssh transport.

Please comment (in a single comment):

• Your connection URL
• TF_LOG=debug terraform plan output
• make sure authorized_hosts on the server is correct
• Any other error
• Relevant info (client & server OS, etc)
• env variable SSH_AUTH_SOCK

[klausenbusk]

In my case specifying sshauth=privkey (the default is agent,privkey) solves the issue. I have ssh-agent running, but the key isn't added to it.

The Go documentation states:

	// Auth contains possible authentication methods to use with the
	// server. Only the first instance of a particular RFC 4252 method will
	// be used during authentication.
	Auth []AuthMethod

So that would explain why it isn't working when both options are specified (only the public keys from the first is used).

@oranenj FYI

[dmacvicar]

@klausenbusk if agent,privkey is specified, we add the auth method only if 1) SSH_AUTH_SOCK exists and 2) we can connect to the agent.
What do you mean the key is not added to it?

[klausenbusk]

What do you mean the key is not added to it?

I only have some of my keys in the agent, in that case if agent,privkey is specified the key specified with keyfile= isn't tried as the library will only try the first instance of a particular RFC 4252 method (Go doc).

[mleone87]

Not working for me too
URI

provider "libvirt" {
  uri = "qemu+ssh://mario@192.168.10.241/system"
}

TF PLAN

2021-10-15T17:11:48.723+0200 [DEBUG] Adding temp file log sink: /tmp/terraform-log469900922
2021-10-15T17:11:48.723+0200 [INFO]  Terraform version: 1.0.9
2021-10-15T17:11:48.723+0200 [INFO]  Go runtime version: go1.17.1
2021-10-15T17:11:48.723+0200 [INFO]  CLI args: []string{"/usr/bin/terraform", "plan"}
2021-10-15T17:11:48.723+0200 [DEBUG] Attempting to open CLI config file: /home/mario/.terraformrc
2021-10-15T17:11:48.723+0200 [DEBUG] File doesn't exist, but doesn't need to. Ignoring.
2021-10-15T17:11:48.723+0200 [DEBUG] checking for credentials in "/home/mario/.terraform.d/plugins"
2021-10-15T17:11:48.723+0200 [DEBUG] ignoring non-existing provider search directory terraform.d/plugins
2021-10-15T17:11:48.723+0200 [DEBUG] will search for provider plugins in /home/mario/.terraform.d/plugins
2021-10-15T17:11:48.723+0200 [DEBUG] will search for provider plugins in /home/mario/.local/share/terraform/plugins
2021-10-15T17:11:48.723+0200 [DEBUG] ignoring non-existing provider search directory /home/mario/.local/share/flatpak/exports/share/terraform/plugins
2021-10-15T17:11:48.723+0200 [DEBUG] ignoring non-existing provider search directory /var/lib/flatpak/exports/share/terraform/plugins
2021-10-15T17:11:48.723+0200 [DEBUG] ignoring non-existing provider search directory /usr/local/share/terraform/plugins
2021-10-15T17:11:48.723+0200 [DEBUG] ignoring non-existing provider search directory /usr/share/terraform/plugins
2021-10-15T17:11:48.723+0200 [INFO]  CLI command args: []string{"plan"}
2021-10-15T17:11:48.724+0200 [DEBUG] New state was assigned lineage "6668a336-0ebe-a0bf-095b-7690864aa4ea"
2021-10-15T17:11:48.925+0200 [DEBUG] checking for provisioner in "."
2021-10-15T17:11:48.932+0200 [DEBUG] checking for provisioner in "/usr/bin"
2021-10-15T17:11:48.932+0200 [DEBUG] checking for provisioner in "/home/mario/.terraform.d/plugins"
2021-10-15T17:11:48.933+0200 [INFO]  Failed to read plugin lock file .terraform/plugins/linux_amd64/lock.json: open .terraform/plugins/linux_amd64/lock.json: no such file or directory
2021-10-15T17:11:48.933+0200 [INFO]  backend/local: starting Plan operation
2021-10-15T17:11:48.934+0200 [DEBUG] created provider logger: level=debug
2021-10-15T17:11:48.934+0200 [INFO]  provider: configuring client automatic mTLS
2021-10-15T17:11:48.944+0200 [DEBUG] provider: starting plugin: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 args=[.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11]
2021-10-15T17:11:48.944+0200 [DEBUG] provider: plugin started: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17385
2021-10-15T17:11:48.944+0200 [DEBUG] provider: waiting for RPC address: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11
2021-10-15T17:11:48.950+0200 [INFO]  provider.terraform-provider-libvirt_v0.6.11: configuring server automatic mTLS: timestamp=2021-10-15T17:11:48.950+0200
2021-10-15T17:11:48.987+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: plugin address: address=/tmp/plugin697683969 network=unix timestamp=2021-10-15T17:11:48.987+0200
2021-10-15T17:11:48.987+0200 [DEBUG] provider: using plugin: version=5
2021-10-15T17:11:49.018+0200 [DEBUG] provider.stdio: received EOF, stopping recv loop: err="rpc error: code = Unimplemented desc = unknown service plugin.GRPCStdio"
2021-10-15T17:11:49.019+0200 [DEBUG] No provider meta schema returned
2021-10-15T17:11:49.020+0200 [DEBUG] provider: plugin process exited: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17385
2021-10-15T17:11:49.020+0200 [DEBUG] provider: plugin exited
2021-10-15T17:11:49.020+0200 [INFO]  terraform: building graph: GraphTypeValidate
2021-10-15T17:11:49.020+0200 [DEBUG] ProviderTransformer: "libvirt_domain.default" (*terraform.NodeValidatableResource) needs provider["registry.terraform.io/dmacvicar/libvirt"]
2021-10-15T17:11:49.020+0200 [DEBUG] ReferenceTransformer: "libvirt_domain.default" references: []
2021-10-15T17:11:49.020+0200 [DEBUG] ReferenceTransformer: "provider[\"registry.terraform.io/dmacvicar/libvirt\"]" references: []
2021-10-15T17:11:49.021+0200 [DEBUG] Starting graph walk: walkValidate
2021-10-15T17:11:49.021+0200 [DEBUG] created provider logger: level=debug
2021-10-15T17:11:49.021+0200 [INFO]  provider: configuring client automatic mTLS
2021-10-15T17:11:49.030+0200 [DEBUG] provider: starting plugin: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 args=[.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11]
2021-10-15T17:11:49.031+0200 [DEBUG] provider: plugin started: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17394
2021-10-15T17:11:49.031+0200 [DEBUG] provider: waiting for RPC address: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11
2021-10-15T17:11:49.036+0200 [INFO]  provider.terraform-provider-libvirt_v0.6.11: configuring server automatic mTLS: timestamp=2021-10-15T17:11:49.036+0200
2021-10-15T17:11:49.073+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: plugin address: address=/tmp/plugin466037037 network=unix timestamp=2021-10-15T17:11:49.073+0200
2021-10-15T17:11:49.073+0200 [DEBUG] provider: using plugin: version=5
2021-10-15T17:11:49.102+0200 [DEBUG] provider.stdio: received EOF, stopping recv loop: err="rpc error: code = Unimplemented desc = unknown service plugin.GRPCStdio"
2021-10-15T17:11:49.103+0200 [DEBUG] No provider meta schema returned
2021-10-15T17:11:49.106+0200 [DEBUG] provider: plugin process exited: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17394
2021-10-15T17:11:49.106+0200 [DEBUG] provider: plugin exited
2021-10-15T17:11:49.106+0200 [INFO]  backend/local: plan calling Plan
2021-10-15T17:11:49.106+0200 [INFO]  terraform: building graph: GraphTypePlan
2021-10-15T17:11:49.107+0200 [DEBUG] ProviderTransformer: "libvirt_domain.default (expand)" (*terraform.nodeExpandPlannableResource) needs provider["registry.terraform.io/dmacvicar/libvirt"]
2021-10-15T17:11:49.107+0200 [DEBUG] ReferenceTransformer: "libvirt_domain.default (expand)" references: []
2021-10-15T17:11:49.107+0200 [DEBUG] ReferenceTransformer: "provider[\"registry.terraform.io/dmacvicar/libvirt\"]" references: []
2021-10-15T17:11:49.107+0200 [DEBUG] Starting graph walk: walkPlan
2021-10-15T17:11:49.107+0200 [DEBUG] created provider logger: level=debug
2021-10-15T17:11:49.107+0200 [INFO]  provider: configuring client automatic mTLS
2021-10-15T17:11:49.117+0200 [DEBUG] provider: starting plugin: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 args=[.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11]
2021-10-15T17:11:49.117+0200 [DEBUG] provider: plugin started: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17403
2021-10-15T17:11:49.117+0200 [DEBUG] provider: waiting for RPC address: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11
2021-10-15T17:11:49.123+0200 [INFO]  provider.terraform-provider-libvirt_v0.6.11: configuring server automatic mTLS: timestamp=2021-10-15T17:11:49.123+0200
2021-10-15T17:11:49.160+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: plugin address: network=unix address=/tmp/plugin861317600 timestamp=2021-10-15T17:11:49.160+0200
2021-10-15T17:11:49.160+0200 [DEBUG] provider: using plugin: version=5
2021-10-15T17:11:49.188+0200 [DEBUG] provider.stdio: received EOF, stopping recv loop: err="rpc error: code = Unimplemented desc = unknown service plugin.GRPCStdio"
2021-10-15T17:11:49.189+0200 [DEBUG] No provider meta schema returned
2021-10-15T17:11:49.191+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: 2021/10/15 17:11:49 [DEBUG] Configuring provider for 'qemu+ssh://mario@192.168.10.241/system': &{map[uri:0xc0000ba3c0] <nil> <nil> 0xc000616080 map[] <nil> 0xc000616100 0xc000125170 0xc00068e280 false map[] {1 {0 0}} false false}
2021-10-15T17:11:49.227+0200 [INFO]  backend/local: plan operation completed
╷
│ Error: failed to dial libvirt: ssh: handshake failed: ssh: unable to authenticate, attempted methods [publickey none], no supported methods remain
│ 
│   with provider["registry.terraform.io/dmacvicar/libvirt"],
│   on provider.tf line 1, in provider "libvirt":
│    1: provider "libvirt" {
│ 
╵
2021-10-15T17:11:49.230+0200 [DEBUG] provider: plugin process exited: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17403
2021-10-15T17:11:49.230+0200 [DEBUG] provider: plugin exited

ssh-agent not used

ssh config(same connection url from plan virsh works)

Host 192.168.10.241
User mario
IdentityFile ~/.ssh/id_rsa_home

server side error

ott 15 17:14:59 arch-server sshd[3159]: userauth_pubkey: key type ssh-rsa not in PubkeyAcceptedAlgorithms [preauth]
ott 15 17:15:00 arch-server sshd[3159]: Connection closed by authenticating user mario 192.168.10.200 port 48698 [preauth]

if I do not make a copy of my ssh key with the default name the error is different(ssh config file gets ignored i think)

2021-10-15T17:16:00.707+0200 [DEBUG] Adding temp file log sink: /tmp/terraform-log3154352186
2021-10-15T17:16:00.707+0200 [INFO]  Terraform version: 1.0.9
2021-10-15T17:16:00.707+0200 [INFO]  Go runtime version: go1.17.1
2021-10-15T17:16:00.707+0200 [INFO]  CLI args: []string{"/usr/bin/terraform", "plan"}
2021-10-15T17:16:00.707+0200 [DEBUG] Attempting to open CLI config file: /home/mario/.terraformrc
2021-10-15T17:16:00.707+0200 [DEBUG] File doesn't exist, but doesn't need to. Ignoring.
2021-10-15T17:16:00.707+0200 [DEBUG] checking for credentials in "/home/mario/.terraform.d/plugins"
2021-10-15T17:16:00.707+0200 [DEBUG] ignoring non-existing provider search directory terraform.d/plugins
2021-10-15T17:16:00.707+0200 [DEBUG] will search for provider plugins in /home/mario/.terraform.d/plugins
2021-10-15T17:16:00.707+0200 [DEBUG] will search for provider plugins in /home/mario/.local/share/terraform/plugins
2021-10-15T17:16:00.707+0200 [DEBUG] ignoring non-existing provider search directory /home/mario/.local/share/flatpak/exports/share/terraform/plugins
2021-10-15T17:16:00.707+0200 [DEBUG] ignoring non-existing provider search directory /var/lib/flatpak/exports/share/terraform/plugins
2021-10-15T17:16:00.707+0200 [DEBUG] ignoring non-existing provider search directory /usr/local/share/terraform/plugins
2021-10-15T17:16:00.707+0200 [DEBUG] ignoring non-existing provider search directory /usr/share/terraform/plugins
2021-10-15T17:16:00.708+0200 [INFO]  CLI command args: []string{"plan"}
2021-10-15T17:16:00.708+0200 [DEBUG] New state was assigned lineage "6cb6e08e-392b-7a0c-180c-accf09c8fbe6"
2021-10-15T17:16:00.926+0200 [DEBUG] checking for provisioner in "."
2021-10-15T17:16:00.933+0200 [DEBUG] checking for provisioner in "/usr/bin"
2021-10-15T17:16:00.934+0200 [DEBUG] checking for provisioner in "/home/mario/.terraform.d/plugins"
2021-10-15T17:16:00.934+0200 [INFO]  Failed to read plugin lock file .terraform/plugins/linux_amd64/lock.json: open .terraform/plugins/linux_amd64/lock.json: no such file or directory
2021-10-15T17:16:00.934+0200 [INFO]  backend/local: starting Plan operation
2021-10-15T17:16:00.935+0200 [DEBUG] created provider logger: level=debug
2021-10-15T17:16:00.935+0200 [INFO]  provider: configuring client automatic mTLS
2021-10-15T17:16:00.945+0200 [DEBUG] provider: starting plugin: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 args=[.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11]
2021-10-15T17:16:00.945+0200 [DEBUG] provider: plugin started: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17880
2021-10-15T17:16:00.945+0200 [DEBUG] provider: waiting for RPC address: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11
2021-10-15T17:16:00.951+0200 [INFO]  provider.terraform-provider-libvirt_v0.6.11: configuring server automatic mTLS: timestamp=2021-10-15T17:16:00.951+0200
2021-10-15T17:16:00.988+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: plugin address: address=/tmp/plugin289039778 network=unix timestamp=2021-10-15T17:16:00.988+0200
2021-10-15T17:16:00.988+0200 [DEBUG] provider: using plugin: version=5
2021-10-15T17:16:01.018+0200 [DEBUG] provider.stdio: received EOF, stopping recv loop: err="rpc error: code = Unimplemented desc = unknown service plugin.GRPCStdio"
2021-10-15T17:16:01.018+0200 [DEBUG] No provider meta schema returned
2021-10-15T17:16:01.021+0200 [DEBUG] provider: plugin process exited: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17880
2021-10-15T17:16:01.021+0200 [DEBUG] provider: plugin exited
2021-10-15T17:16:01.021+0200 [INFO]  terraform: building graph: GraphTypeValidate
2021-10-15T17:16:01.021+0200 [DEBUG] ProviderTransformer: "libvirt_domain.default" (*terraform.NodeValidatableResource) needs provider["registry.terraform.io/dmacvicar/libvirt"]
2021-10-15T17:16:01.021+0200 [DEBUG] ReferenceTransformer: "libvirt_domain.default" references: []
2021-10-15T17:16:01.021+0200 [DEBUG] ReferenceTransformer: "provider[\"registry.terraform.io/dmacvicar/libvirt\"]" references: []
2021-10-15T17:16:01.021+0200 [DEBUG] Starting graph walk: walkValidate
2021-10-15T17:16:01.021+0200 [DEBUG] created provider logger: level=debug
2021-10-15T17:16:01.022+0200 [INFO]  provider: configuring client automatic mTLS
2021-10-15T17:16:01.031+0200 [DEBUG] provider: starting plugin: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 args=[.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11]
2021-10-15T17:16:01.031+0200 [DEBUG] provider: plugin started: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17889
2021-10-15T17:16:01.031+0200 [DEBUG] provider: waiting for RPC address: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11
2021-10-15T17:16:01.037+0200 [INFO]  provider.terraform-provider-libvirt_v0.6.11: configuring server automatic mTLS: timestamp=2021-10-15T17:16:01.037+0200
2021-10-15T17:16:01.074+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: plugin address: address=/tmp/plugin197857021 network=unix timestamp=2021-10-15T17:16:01.074+0200
2021-10-15T17:16:01.074+0200 [DEBUG] provider: using plugin: version=5
2021-10-15T17:16:01.103+0200 [DEBUG] provider.stdio: received EOF, stopping recv loop: err="rpc error: code = Unimplemented desc = unknown service plugin.GRPCStdio"
2021-10-15T17:16:01.104+0200 [DEBUG] No provider meta schema returned
2021-10-15T17:16:01.107+0200 [DEBUG] provider: plugin process exited: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17889
2021-10-15T17:16:01.107+0200 [DEBUG] provider: plugin exited
2021-10-15T17:16:01.107+0200 [INFO]  backend/local: plan calling Plan
2021-10-15T17:16:01.107+0200 [INFO]  terraform: building graph: GraphTypePlan
2021-10-15T17:16:01.107+0200 [DEBUG] ProviderTransformer: "libvirt_domain.default (expand)" (*terraform.nodeExpandPlannableResource) needs provider["registry.terraform.io/dmacvicar/libvirt"]
2021-10-15T17:16:01.108+0200 [DEBUG] ReferenceTransformer: "libvirt_domain.default (expand)" references: []
2021-10-15T17:16:01.108+0200 [DEBUG] ReferenceTransformer: "provider[\"registry.terraform.io/dmacvicar/libvirt\"]" references: []
2021-10-15T17:16:01.108+0200 [DEBUG] Starting graph walk: walkPlan
2021-10-15T17:16:01.108+0200 [DEBUG] created provider logger: level=debug
2021-10-15T17:16:01.108+0200 [INFO]  provider: configuring client automatic mTLS
2021-10-15T17:16:01.118+0200 [DEBUG] provider: starting plugin: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 args=[.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11]
2021-10-15T17:16:01.118+0200 [DEBUG] provider: plugin started: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17899
2021-10-15T17:16:01.118+0200 [DEBUG] provider: waiting for RPC address: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11
2021-10-15T17:16:01.124+0200 [INFO]  provider.terraform-provider-libvirt_v0.6.11: configuring server automatic mTLS: timestamp=2021-10-15T17:16:01.124+0200
2021-10-15T17:16:01.163+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: plugin address: network=unix address=/tmp/plugin070799262 timestamp=2021-10-15T17:16:01.163+0200
2021-10-15T17:16:01.163+0200 [DEBUG] provider: using plugin: version=5
2021-10-15T17:16:01.192+0200 [DEBUG] provider.stdio: received EOF, stopping recv loop: err="rpc error: code = Unimplemented desc = unknown service plugin.GRPCStdio"
2021-10-15T17:16:01.193+0200 [DEBUG] No provider meta schema returned
2021-10-15T17:16:01.195+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: 2021/10/15 17:16:01 [DEBUG] Configuring provider for 'qemu+ssh://mario@192.168.10.241/system': &{map[uri:0xc0001383c0] <nil> <nil> 0xc0000ce2a0 map[] <nil> 0xc0000ce620 0xc000128288 0xc00070a460 false map[] {1 {0 0}} false false}
2021-10-15T17:16:01.195+0200 [DEBUG] provider.terraform-provider-libvirt_v0.6.11: 2021/10/15 17:16:01 [ERROR] Failed to read ssh key: %!w(*fs.PathError=&{open /home/mario/.ssh/id_rsa 2})
2021-10-15T17:16:01.195+0200 [INFO]  backend/local: plan operation completed
╷
│ Error: failed to dial libvirt: Could not configure SSH authentication methods
│ 
│   with provider["registry.terraform.io/dmacvicar/libvirt"],
│   on provider.tf line 1, in provider "libvirt":
│    1: provider "libvirt" {
│ 
╵
2021-10-15T17:16:01.197+0200 [DEBUG] provider: plugin process exited: path=.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.6.11/linux_amd64/terraform-provider-libvirt_v0.6.11 pid=17899
2021-10-15T17:16:01.198+0200 [DEBUG] provider: plugin exited

some more ssh infos

sudo /usr/sbin/sshd -T | grep "(ciphers|macs|kexalgorithms)"

ciphers chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
macs umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
kexalgorithms curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256

PORT   STATE SERVICE VERSION
22/tcp open  ssh     OpenSSH 8.8 (protocol 2.0)
| ssh2-enum-algos: 
|   kex_algorithms: (9)
|       curve25519-sha256
|       curve25519-sha256@libssh.org
|       ecdh-sha2-nistp256
|       ecdh-sha2-nistp384
|       ecdh-sha2-nistp521
|       diffie-hellman-group-exchange-sha256
|       diffie-hellman-group16-sha512
|       diffie-hellman-group18-sha512
|       diffie-hellman-group14-sha256
|   server_host_key_algorithms: (4)
|       rsa-sha2-512
|       rsa-sha2-256
|       ecdsa-sha2-nistp256
|       ssh-ed25519
|   encryption_algorithms: (6)
|       chacha20-poly1305@openssh.com
|       aes128-ctr
|       aes192-ctr
|       aes256-ctr
|       aes128-gcm@openssh.com
|       aes256-gcm@openssh.com
|   mac_algorithms: (10)
|       umac-64-etm@openssh.com
|       umac-128-etm@openssh.com
|       hmac-sha2-256-etm@openssh.com
|       hmac-sha2-512-etm@openssh.com
|       hmac-sha1-etm@openssh.com
|       umac-64@openssh.com
|       umac-128@openssh.com
|       hmac-sha2-256
|       hmac-sha2-512
|       hmac-sha1
|   compression_algorithms: (2)
|       none
|_      zlib@openssh.com

[mc256]

I came across the same issue and was searching for an answer.

╷
│ Error: failed to dial libvirt: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
│ 
│   with provider["registry.terraform.io/dmacvicar/libvirt"],
│   on k8s.tf line 10, in provider "libvirt":
│   10: provider "libvirt" {
│ 
╵

After checking the documentation on https://libvirt.org/uri.html
I added sshauth=privkey to the URI and it works!!!

qemu+ssh://<USERNAME>@<ADDRESS>/system?keyfile=<PATH TO PRIVATE KEY>&sshauth=privkey

I hope this could help.

[wmariuss]

I came across the same issue and was searching for an answer.

╷
│ Error: failed to dial libvirt: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
│ 
│   with provider["registry.terraform.io/dmacvicar/libvirt"],
│   on k8s.tf line 10, in provider "libvirt":
│   10: provider "libvirt" {
│ 
╵

After checking the documentation on https://libvirt.org/uri.html I added sshauth=privkey to the URI and it works!!!

qemu+ssh://<USERNAME>@<ADDRESS>/system?keyfile=<PATH TO PRIVATE KEY>&sshauth=privkey

I hope this could help.

Nop, to me this is not working. Also in 0.6.12 version.

[ratelbee]

qemu+ssh://user@host/system?sshauth=privkey&keyfile=./id_rsa

for me on macos(darwin_arm_64) terraform plan returned:

Error: failed to dial libvirt: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain

[dmacvicar]

@ratelbee can you provide a full debug log?