Add log size max configuration

Signed-off-by: Mrunal Patel <mrunalp@gmail.com>

cmd/crio/config.go

@@ -108,6 +108,10 @@ hooks_dir_path = "{{ .HooksDirPath }}"
 # pids_limit is the number of processes allowed in a container
 pids_limit = {{ .PidsLimit }}
 
+# log_size_max is the max limit for the container log size in bytes.
+# Negative values indicate that no limit is imposed.
+log_size_max = {{ .LogSizeMax }}
+
 # The "crio.image" table contains settings pertaining to the
 # management of OCI images.
 [crio.image]

libkpod/config.go

@@ -51,6 +51,10 @@ const (
 	// DefaultPidsLimit is the default value for maximum number of processes
 	// allowed inside a container
 	DefaultPidsLimit = 1024
+
+	// DefaultLogSizeMax is the default value for the maximum log size
+	// allowed for a container. Negative values mean that no limit is imposed.
+	DefaultLogSizeMax = -1
 )
 
 // This structure is necessary to fake the TOML tables when parsing,
@@ -145,6 +149,12 @@ type RuntimeConfig struct {
 	// by the cgroup process number controller.
 	PidsLimit int64 `toml:"pids_limit"`
 
+	// LogSizeMax is the maximum number of bytes after which the log file
+	// will be truncated. It can be expressed as a human-friendly string
+	// that is parsed to bytes.
+	// Negative values indicate that the log file won't be truncated.
+	LogSizeMax int64 `toml:"log_size_max"`
+
 	// ContainerExitsDir is the directory in which container exit files are
 	// written to by conmon.
 	ContainerExitsDir string `toml:"container_exits_dir"`
@@ -274,6 +284,7 @@ func DefaultConfig() *Config {
 			PidsLimit:         DefaultPidsLimit,
 			ContainerExitsDir: containerExitsDir,
 			HooksDirPath:      DefaultHooksDirPath,
+			LogSizeMax:        DefaultLogSizeMax,
 		},
 		ImageConfig: ImageConfig{
 			DefaultTransport:    defaultTransport,