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Add steps for debugging in the README #4

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Add steps for debugging in the README #4

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63 changes: 61 additions & 2 deletions README.md
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Expand Up @@ -14,10 +14,10 @@ in the files (`<your company>-<lab>-config`).

Add the credentials for your remoteci in `~/.config/dci-pipeline/dci_credentials.yml`.

Then create the required directories and files for DCI to work:
Then, create the required directories and files for DCI to work:

```ShellSession
$ cd
$ cd ~
$ git clone git@github.com:dci-labs/<your company>-<lab>-config.git
$ mkdir -p dci-cache-dir upload-errors .config/dci-pipeline
$ cat > .config/dci-pipeline/config <<EOF
Expand Down Expand Up @@ -59,6 +59,13 @@ $ KUBECONFIG=$KUBECONFIG dci-pipeline-schedule workload

## Testing a PR

First, setup Github credentials in `~/.config/dci-pipeline/config`:

```
GITHUB_TOKEN=<your_github_token>
GITHUB_LOGIN=<your_github_user>
```

For testing a PR with the full pipeline:

```ShellSession
Expand All @@ -70,3 +77,55 @@ Or only with the workload:
```ShellSession
$ dci-pipeline-check https://github.com/dci-labs/<your company>-<lab>-config/pull/1 $KUBECONFIG workload
```

## How to debug and fix issues

1. Locate the logs of the job in `~/.dci-queue/log/pool/`. Typically, you'll need the latest created file:

```ShellSession
cat "$(ls -1t ~/.dci-queue/log/pool/ | head -n 1)"
```

Check the ansible-playbook invocation, verify and fix possible permission errors, and make a note of the job URL.

2. If encountering an unusual situation with dci-queue, consider removing and recreating the pool from scratch:

```ShellSession
$ dci-queue remove-pool pool
$ dci-queue add-pool pool
$ dci-queue add-resource pool cluster1
```

3. If making dci-queue work immediately is challenging, consider running a job first with dci-pipeline.

To do this, modify the pipeline files to replace dynamic paths. The following command will change `@QUEUE` to `pool` and `@RESOURCE` to `cluster1`:

```ShellSession
$ export CONFIG_REPO_PATH="$HOME/<your company>-<lab>-config"
$ cd $CONFIG_REPO_PATH
$ find pipelines -type f -exec sed -i 's/@QUEUE/pool/g; s/@RESOURCE/cluster1/g' {} +
```

Start a DCI job with dci-pipeline:

```ShellSession
dci-pipeline \
workload:ansible_extravars=kubeconfig_path:$KUBECONFIG \
workload:ansible_inventory=$CONFIG_REPO_PATH/inventories/pool/cluster1 \
workload:ansible_cfg=$CONFIG_REPO_PATH/pipelines/ansible.cfg \
$CONFIG_REPO_PATH/pipelines/workload-pipeline.yml
```

Debug by checking the logs in `~/.dci-queue/log/pool/`. Once the `dci-pipeline` invocation is working, revert to using dynamic paths by replacing `pool` with `@QUEUE` and `cluster1` with `@RESOURCE`:

```ShellSession
$ export CONFIG_REPO_PATH="$HOME/<your company>-<lab>-config"
$ cd $CONFIG_REPO_PATH
$ find pipelines -type f -exec sed -i 's/pool/@QUEUE/g; s/cluster1/@RESOURCE/g' {} +
```

and return to using `dci-pipeline-schedule`:

```ShellSession
$ KUBECONFIG=$KUBECONFIG dci-pipeline-schedule workload
```