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Code Issues Releases Activity

asset/cluster: Invoke terraform in a temp dir.

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In order to be able to use openshift-install to launch multiple
clusters we need to create a working dir for each invocation.

Here we create a tmp dir that has the terraform.tfvars file and
invoke the cluster within the dir.

The dir will be removed after the invocation is done.
This commit is contained in:
Yifan Gu
2018-09-24 12:07:15 -07:00
parent 00862d41c0
commit 408c066389
1 changed files with 13 additions and 5 deletions
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18
pkg/asset/cluster/cluster.go
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@@ -4,6 +4,7 @@ import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"github.com/openshift/installer/pkg/asset"
@@ -49,8 +50,14 @@ func (c *Cluster) Generate(parents map[asset.Asset]*asset.State) (*asset.State,
return nil, fmt.Errorf("failed to get terraform.tfvar state in the parent asset states")
}
// Copy the terraform.tfvars to the working dir for the terraform.
if err := ioutil.WriteFile(filepath.Join(dir, state.Contents[0].Name), state.Contents[0].Data, 0600); err != nil {
// Copy the terraform.tfvars to a temp directory where the terraform will be invoked within.
tmpDir, err := ioutil.TempDir(os.TempDir(), "openshift-install-")
if err != nil {
return nil, fmt.Errorf("failed to create temp dir: %v", err)
}
defer os.RemoveAll(tmpDir)
if err := ioutil.WriteFile(filepath.Join(tmpDir, state.Contents[0].Name), state.Contents[0].Data, 0600); err != nil {
return nil, fmt.Errorf("failed to write terraform.tfvars file: %v", err)
}
@@ -64,12 +71,13 @@ func (c *Cluster) Generate(parents map[asset.Asset]*asset.State) (*asset.State,
return nil, err
}
// This runs the terraform in the terraform template directory.
if err := terraform.Init(dir, templateDir); err != nil {
// This runs the terraform in a temp directory, the tfstate file will be returned
// to the asset store to persist it on the disk.
if err := terraform.Init(tmpDir, templateDir); err != nil {
return nil, err
}
stateFile, err := terraform.Apply(dir, terraform.InfraStep, templateDir)
stateFile, err := terraform.Apply(tmpDir, terraform.InfraStep, templateDir)
if err != nil {
return nil, err
}