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Merge pull request #673 from fidencio/wip/shimv2-and-crio

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shimv2: Add "cri-o" debugging instructions
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GabyCT 2020-06-18 10:09:44 -05:00 committed by GitHub
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Developer-Guide.md
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@ -9,6 +9,7 @@
* [debug logs and shimv2](#debug-logs-and-shimv2)
* [Enabling full `containerd` debug](#enabling-full-containerd-debug)
* [Enabling just `containerd shim` debug](#enabling-just-containerd-shim-debug)
* [Enabling `CRI-O` and `shimv2` debug](#enabling-cri-o-and-shimv2-debug)
* [journald rate limiting](#journald-rate-limiting)
* [`systemd-journald` suppressing messages](#systemd-journald-suppressing-messages)
* [Disabling `systemd-journald` rate limiting](#disabling-systemd-journald-rate-limiting)
@ -176,6 +177,25 @@ option in the `plugins.linux` section of the `containerd` configuration file, su
shim_debug = true
```
#### Enabling `CRI-O` and `shimv2` debug
Depending on the CRI-O version being used one of the following configuration files can
be found: `/etc/crio/crio.conf` or `/etc/crio/crio.conf.d/00-default`.
If the latter is found, the change must be done there as it'll take precedence, overriding
`/etc/crio/crio.conf`.
```toml
# Changes the verbosity of the logs based on the level it is set to. Options
# are fatal, panic, error, warn, info, debug and trace. This option supports
# live configuration reload.
log_level = "info"
```
Switching the default `log_level` from `info` to `debug` enables shimv2 debug logs.
CRI-O logs can be found by using the `crio` identifier, and Kata specific logs can
be found by using the `kata` identifier.
### journald rate limiting
Enabling [full debug](#enable-full-debug) results in the Kata components generating