Do not share container log driver for exec

When the container uses journald logging, we don't want to
automatically use the same driver for its exec sessions. If we do
we will pollute the journal (particularly in the case of
healthchecks) with large amounts of undesired logs. Instead,
force exec sessions logs to file for now; we can add a log-driver
flag later (we'll probably want to add a `podman logs` command
that reads exec session logs at the same time).

Fixes containers#6555

Signed-off-by: Matthew Heon <matthew.heon@pm.me>

libpod/oci_conmon_exec_linux.go

@@ -392,7 +392,7 @@ func (r *ConmonOCIRuntime) startExec(c *Container, sessionID string, options *Ex
 		return nil, nil, err
 	}
 
-	args := r.sharedConmonArgs(c, sessionID, c.execBundlePath(sessionID), c.execPidPath(sessionID), c.execLogPath(sessionID), c.execExitFileDir(sessionID), ociLog, "")
+	args := r.sharedConmonArgs(c, sessionID, c.execBundlePath(sessionID), c.execPidPath(sessionID), c.execLogPath(sessionID), c.execExitFileDir(sessionID), ociLog, define.KubernetesLogging, "")
 
 	if options.PreserveFDs > 0 {
 		args = append(args, formatRuntimeOpts("--preserve-fds", fmt.Sprintf("%d", options.PreserveFDs))...)

libpod/oci_conmon_linux.go

@@ -881,7 +881,7 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
 		return err
 	}
 
-	args := r.sharedConmonArgs(ctr, ctr.ID(), ctr.bundlePath(), filepath.Join(ctr.state.RunDir, "pidfile"), ctr.LogPath(), r.exitsDir, ociLog, logTag)
+	args := r.sharedConmonArgs(ctr, ctr.ID(), ctr.bundlePath(), filepath.Join(ctr.state.RunDir, "pidfile"), ctr.LogPath(), r.exitsDir, ociLog, ctr.LogDriver(), logTag)
 
 	if ctr.config.Spec.Process.Terminal {
 		args = append(args, "-t")
@@ -1137,7 +1137,7 @@ func (r *ConmonOCIRuntime) configureConmonEnv(runtimeDir string) ([]string, []*o
 }
 
 // sharedConmonArgs takes common arguments for exec and create/restore and formats them for the conmon CLI
-func (r *ConmonOCIRuntime) sharedConmonArgs(ctr *Container, cuuid, bundlePath, pidPath, logPath, exitDir, ociLogPath, logTag string) []string {
+func (r *ConmonOCIRuntime) sharedConmonArgs(ctr *Container, cuuid, bundlePath, pidPath, logPath, exitDir, ociLogPath, logDriver, logTag string) []string {
 	// set the conmon API version to be able to use the correct sync struct keys
 	args := []string{
 		"--api-version", "1",
@@ -1155,10 +1155,10 @@ func (r *ConmonOCIRuntime) sharedConmonArgs(ctr *Container, cuuid, bundlePath, p
 		args = append(args, "-s")
 	}
 
-	var logDriver string
-	switch ctr.LogDriver() {
+	var logDriverArg string
+	switch logDriver {
 	case define.JournaldLogging:
-		logDriver = define.JournaldLogging
+		logDriverArg = define.JournaldLogging
 	case define.JSONLogging:
 		fallthrough
 	default: //nolint-stylecheck
@@ -1170,10 +1170,10 @@ func (r *ConmonOCIRuntime) sharedConmonArgs(ctr *Container, cuuid, bundlePath, p
 		// since the former case is obscure, and the latter case isn't an error, let's silently fallthrough
 		fallthrough
 	case define.KubernetesLogging:
-		logDriver = fmt.Sprintf("%s:%s", define.KubernetesLogging, logPath)
+		logDriverArg = fmt.Sprintf("%s:%s", define.KubernetesLogging, logPath)
 	}
 
-	args = append(args, "-l", logDriver)
+	args = append(args, "-l", logDriverArg)
 	if r.logSizeMax >= 0 {
 		args = append(args, "--log-size-max", fmt.Sprintf("%v", r.logSizeMax))
 	}