If there is an error when opening the session for agent forwarding in
the process ssh connention, there is a deadlock when recursively
calling Connect on an internal reattempt. Avoid that, and let the
connection be reattempted externally.
If a connection fails and attempts to reconnect after the keep-alive
loop started, the client will be pulled out from under the keep-alive
requests. Close over a local copy of the client, so that reconnecting
doesn't race with the keepalive loop terminating.
1) Mention the host and port in the "Connecting..." message.
2) Mention the username in the post-connection handshaking message.
3) If handshaking fails, mention the user, host, and port in the error
message that will eventually be returned to the user.
An ssh server should always send a reply packet to the keepalive
request. If we miss those replies for over 2min, consider the connection
dead and abort, rather than block the provisioner indefinitely.
Match the tested behavior, and that of the ssh implementation, where the
communicator automatically connects when starting a command.
Remove unused import from legacy dependency handling.
The error from a remote command is not exported, and only exposed via
the Run method. Otherwise the Run method works exactly like the
runCommand function being removed.
Most of the time an ssh authentication failure would be non-recoverable,
but some host images can start the ssh service before it is properly
configured, or before user authentication data is available.
Log ssh authentication errors and allow the provisioner to retry until
the connection timeout.
Combine the ExitStatus and Err values from remote.Cmd into an error
returned by Wait, better matching the behavior of the os/exec package.
Non-zero exit codes are returned from Wait as a remote.ExitError.
Communicator related errors are returned directly.
Clean up all the error handling in the provisioners using a
communicator. Also remove the extra copyOutput synchronization that was
copied from package to package.
The remote.Cmd struct could not convey any transport related error to
the caller, meaning that interrupted commands would show that they
succeeded.
Change Cmd.SetExited to accept an exit status, as well as an error to
store for the caller. Make the status and error fields internal,
require serialized access through the getter methods.
Users of remote.Cmd should not check both Cmd.Err() and Cmd.ExitStatus()
until after Wait returns.
Require communicators to call Cmd.Init before executing the command.
This will indicate incorrect usage of the remote.Cmd by causing a panic
in SetExitStatus.
Every provisioner that uses communicator implements its own retryFunc.
Take the remote-exec implementation (since it's the most complete) and
put it in the communicator package for each provisioner to use.
Add a public interface `communicator.Fatal`, which can wrap an error to
indicate a fatal error that should not be retried.
Add `host_key` and `bastion_host_key` fields to the ssh communicator
config for strict host key checking.
Both fields expect the contents of an openssh formated public key. This
key can either be the remote host's public key, or the public key of the
CA which signed the remote host certificate.
Support for signed certificates is limited, because the provisioner
usually connects to a remote host by ip address rather than hostname, so
the certificate would need to be signed appropriately. Connecting via
a hostname needs to currently be done through a secondary provisioner,
like one attached to a null_resource.
It's becoming more common for users to have many ssh keys loaded into an
agent, and with the default max auth attempts of an openssh server at 6,
one often needs to specify which id to use in order to avoid a `too many
authentication failures` error.
Add a connection field called `agent_identity` which will function
similarly to the ssh_config IdentityFile when used in conjunction with
an ssh agent. This uses `agent_identity` rather than `identity_file` to
specify that the file is not used directly for authentication, rather
it's used to choose which identity returned from the agent to
authenticate with first.
This feature tries a number of different methods to match the agent
identity. First the provisioner attempts to read the id file and extract
the public key. If that isn't available, we look for a .pub authorized
key file. Either of these will result in a public key that can be
matched directly against the agent keys. Finally we fall back to
matching the comment string exactly, and the id as a suffix. The only
result of using the agent_identity is the reordering of the public keys
used for authentication, and if there is no exact match the client
will still attempt remaining keys until there is an error.
It appears that the cacert option for the winrm provisioner was
not getting passed correctly to the winrm package. Log output
showed that CACert was false regardless of configuration.
While the validation of the connector looked for cacert, the winrm
communicator looked for ca_cert.
This changeset performs the following:
- Updates `masterzen/winrm` vendor to include change from (https://github.com/masterzen/winrm/pull/73)
- Updates `dylanmei/winrmtest` vendor to include change from (https://github.com/dylanmei/winrmtest/pull/4)
- Updates `packer-community/winrmcp` vendor to include the removal of the `masterzen/winrm/winrm` sub-class as a result of the `winrm` CLI tool being removed from the `masterzen/winrm` repository.
- Changes `communicator/winrm/communicator.go` to conform to the new ABI in the `masterzen/winrm` library.
This should completely remove any LGPL licensed dependencies inside of the Terraform project.
```
$ make test
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/08/20 13:40:16 Generated command/internal_plugin_list.go
go test -i $(go list ./... | grep -v '/terraform/vendor/' | grep -v '/builtin/bins/') || exit 1
echo $(go list ./... | grep -v '/terraform/vendor/' | grep -v '/builtin/bins/') | \
xargs -t -n4 go test -timeout=60s -parallel=4
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform github.com/hashicorp/terraform/backend github.com/hashicorp/terraform/backend/atlas github.com/hashicorp/terraform/backend/init
ok github.com/hashicorp/terraform 0.011s
ok github.com/hashicorp/terraform/backend 0.020s
ok github.com/hashicorp/terraform/backend/atlas 0.634s
ok github.com/hashicorp/terraform/backend/init 0.007s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/backend/legacy github.com/hashicorp/terraform/backend/local github.com/hashicorp/terraform/backend/remote-state github.com/hashicorp/terraf
orm/backend/remote-state/azure
ok github.com/hashicorp/terraform/backend/legacy 0.009s
ok github.com/hashicorp/terraform/backend/local 0.211s
ok github.com/hashicorp/terraform/backend/remote-state 0.006s
ok github.com/hashicorp/terraform/backend/remote-state/azure 0.010s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/backend/remote-state/consul github.com/hashicorp/terraform/backend/remote-state/inmem github.com/hashicorp/terraform/backend/remote-state/s
3 github.com/hashicorp/terraform/backend/remote-state/swift
ok github.com/hashicorp/terraform/backend/remote-state/consul 0.007s
ok github.com/hashicorp/terraform/backend/remote-state/inmem 0.013s
ok github.com/hashicorp/terraform/backend/remote-state/s3 0.007s
ok github.com/hashicorp/terraform/backend/remote-state/swift 0.013s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/builtin/providers/test github.com/hashicorp/terraform/builtin/provisioners/chef github.com/hashicorp/terraform/builtin/provisioners/file gi
thub.com/hashicorp/terraform/builtin/provisioners/local-exec
ok github.com/hashicorp/terraform/builtin/providers/test 1.544s
ok github.com/hashicorp/terraform/builtin/provisioners/chef 0.017s
ok github.com/hashicorp/terraform/builtin/provisioners/file 0.006s
ok github.com/hashicorp/terraform/builtin/provisioners/local-exec 0.078s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/builtin/provisioners/remote-exec github.com/hashicorp/terraform/builtin/provisioners/salt-masterless github.com/hashicorp/terraform/command
github.com/hashicorp/terraform/command/clistate
ok github.com/hashicorp/terraform/builtin/provisioners/remote-exec 1.037s
ok github.com/hashicorp/terraform/builtin/provisioners/salt-masterless 0.008s
ok github.com/hashicorp/terraform/command 14.589s
? github.com/hashicorp/terraform/command/clistate [no test files]
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/command/e2etest github.com/hashicorp/terraform/command/format github.com/hashicorp/terraform/communicator github.com/hashicorp/terraform/co
mmunicator/remote
ok github.com/hashicorp/terraform/command/e2etest 3.729s
ok github.com/hashicorp/terraform/command/format 0.004s
ok github.com/hashicorp/terraform/communicator 0.005s
ok github.com/hashicorp/terraform/communicator/remote 0.003s [no tests to run]
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/communicator/shared github.com/hashicorp/terraform/communicator/ssh github.com/hashicorp/terraform/communicator/winrm github.com/hashicorp/
terraform/config
ok github.com/hashicorp/terraform/communicator/shared 0.007s
ok github.com/hashicorp/terraform/communicator/ssh 0.016s
ok github.com/hashicorp/terraform/communicator/winrm 0.018s
ok github.com/hashicorp/terraform/config 0.213s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/config/module github.com/hashicorp/terraform/dag github.com/hashicorp/terraform/digraph github.com/hashicorp/terraform/flatmap
ok github.com/hashicorp/terraform/config/module 0.044s
ok github.com/hashicorp/terraform/dag 0.010s
ok github.com/hashicorp/terraform/digraph 0.002s
ok github.com/hashicorp/terraform/flatmap 0.002s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/helper/acctest github.com/hashicorp/terraform/helper/config github.com/hashicorp/terraform/helper/copy github.com/hashicorp/terraform/helpe
r/diff
? github.com/hashicorp/terraform/helper/acctest [no test files]
ok github.com/hashicorp/terraform/helper/config 0.005s
? github.com/hashicorp/terraform/helper/copy [no test files]
ok github.com/hashicorp/terraform/helper/diff 0.005s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/helper/encryption github.com/hashicorp/terraform/helper/experiment github.com/hashicorp/terraform/helper/hashcode github.com/hashicorp/terr
aform/helper/hilmapstructure
? github.com/hashicorp/terraform/helper/encryption [no test files]
ok github.com/hashicorp/terraform/helper/experiment 0.001s
ok github.com/hashicorp/terraform/helper/hashcode 0.001s
? github.com/hashicorp/terraform/helper/hilmapstructure [no test files]
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/helper/logging github.com/hashicorp/terraform/helper/mutexkv github.com/hashicorp/terraform/helper/pathorcontents github.com/hashicorp/terr
aform/helper/resource
? github.com/hashicorp/terraform/helper/logging [no test files]
ok github.com/hashicorp/terraform/helper/mutexkv 0.055s
ok github.com/hashicorp/terraform/helper/pathorcontents 0.002s
ok github.com/hashicorp/terraform/helper/resource 2.659s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/helper/schema github.com/hashicorp/terraform/helper/shadow github.com/hashicorp/terraform/helper/signalwrapper github.com/hashicorp/terrafo
rm/helper/slowmessage
ok github.com/hashicorp/terraform/helper/schema 0.063s
ok github.com/hashicorp/terraform/helper/shadow 0.156s
ok github.com/hashicorp/terraform/helper/signalwrapper 0.022s
ok github.com/hashicorp/terraform/helper/slowmessage 0.102s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/helper/structure github.com/hashicorp/terraform/helper/validation github.com/hashicorp/terraform/helper/variables github.com/hashicorp/terr
aform/helper/wrappedreadline
ok github.com/hashicorp/terraform/helper/structure 0.004s
ok github.com/hashicorp/terraform/helper/validation 0.004s
ok github.com/hashicorp/terraform/helper/variables 0.006s
? github.com/hashicorp/terraform/helper/wrappedreadline [no test files]
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/helper/wrappedstreams github.com/hashicorp/terraform/moduledeps github.com/hashicorp/terraform/plugin github.com/hashicorp/terraform/plugin
/discovery
? github.com/hashicorp/terraform/helper/wrappedstreams [no test files]
ok github.com/hashicorp/terraform/moduledeps 0.004s
ok github.com/hashicorp/terraform/plugin 0.046s
ok github.com/hashicorp/terraform/plugin/discovery 0.029s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/repl github.com/hashicorp/terraform/scripts github.com/hashicorp/terraform/state github.com/hashicorp/terraform/state/remote
ok github.com/hashicorp/terraform/repl 0.006s
ok github.com/hashicorp/terraform/scripts 0.008s
ok github.com/hashicorp/terraform/state 2.617s
ok github.com/hashicorp/terraform/state/remote 0.025s
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/terraform github.com/hashicorp/terraform/tools/terraform-bundle
go test -timeout=60s -parallel=4 github.com/hashicorp/terraform/terraform github.com/hashicorp/terraform/tools/terraform-bundle
ok github.com/hashicorp/terraform/terraform 4.222s
? github.com/hashicorp/terraform/tools/terraform-bundle [no test files]
```
These are skipped without the SSH_UPLOAD_TEST flag, since they require
connecting to a running ssh server on localhost as the current user, and
one creates a very large file.
Fixes#10463
I'm really surprised this flew under the radar for years...
By having unique PRNGs, the SSH communicator could and would
generate identical ScriptPaths and two provisioners running in parallel
could overwrite each other and execute the same script. This would
happen because they're both seeded by the current time which could
potentially be identical if done in parallel...
Instead, we share the rand now so that the sequence is guaranteed
unique. As an extra measure of robustness, we also multiple by the PID
so that we're also protected against two processes at the same time.
Fixes#3605 and adds the functionality suggested in PR #7440.
This PR is using a different appraoch that (IMHO) feels cleaner and (even more important) adds support for Windows at the same time.
Jaime Caamaño Ruiz