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README: logging: add shimv2 information

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The shimv2 runtime logs slightly differently - let's clarify
that in the existing OCI/CRI-O only runtime section.

Fixes: #2520

Signed-off-by: Graham Whaley <graham.whaley@intel.com>
This commit is contained in:
Graham Whaley 2020-03-10 15:59:37 +00:00
parent a5436627f5
commit 2cd0c88574
1 changed files with 25 additions and 6 deletions
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README.md
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@ -20,6 +20,8 @@ For details of the other Kata Containers repositories, see the
* [Architecture overview](#architecture-overview) * [Architecture overview](#architecture-overview)
* [Configuration](#configuration) * [Configuration](#configuration)
* [Logging](#logging) * [Logging](#logging)
* [Kata OCI](#kata-oci)
* [Kata containerd shimv2](#kata-containerd-shimv2)
* [Debugging](#debugging) * [Debugging](#debugging)
* [Limitations](#limitations) * [Limitations](#limitations)
* [Community](#community) * [Community](#community)
@ -138,8 +140,17 @@ $ kata-runtime kata-env
## Logging ## Logging
The runtime provides `--log=` and `--log-format=` options. However, the For detailed information and analysis on obtaining logs for other system
runtime also always logs to the system log (`syslog` or `journald`). components, see the documentation for the
[`kata-log-parser`](https://github.com/kata-containers/tests/tree/master/cmd/log-parser)
tool.
For runtime logs, see the following sections for the CRI-O and containerd shimv2 based runtimes.
### Kata OCI
The Kata OCI runtime (including when used with CRI-O), provides `--log=` and `--log-format=` options.
However, the runtime also always logs to the system log (`syslog` or `journald`).
To view runtime log output: To view runtime log output:
@ -147,10 +158,18 @@ To view runtime log output:
$ sudo journalctl -t kata-runtime $ sudo journalctl -t kata-runtime
``` ```
For detailed information and analysis on obtaining logs for other system ### Kata containerd shimv2
components, see the documentation for the
[`kata-log-parser`](https://github.com/kata-containers/tests/tree/master/cmd/log-parser) The Kata containerd shimv2 runtime logs through `containerd`, and its logs will be sent
tool. to wherever the `containerd` logs are directed. However, the
shimv2 runtime also always logs to the system log (`syslog` or `journald`) under the
identifier name of `kata`.
To view the `shimv2` runtime log output:
```bash
$ sudo journalctl -t kata
```
## Debugging ## Debugging