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Keep kernel.pid_max smaller than 1048575. #565

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merged 2 commits into from
Sep 11, 2024
Merged

Keep kernel.pid_max smaller than 1048575. #565

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a862152
Keep the kernel.pid_max smaller than 1048575.
guoshiuan Sep 11, 2024
9ef119f
Revise format and comment.
guoshiuan Sep 11, 2024
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12 changes: 12 additions & 0 deletions topo/topo.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
"fmt"
"io"
"os"
"path/filepath"
"strings"
"time"

Expand All @@ -29,6 +30,7 @@
"github.com/openconfig/gnmi/errlist"
"github.com/openconfig/kne/cluster/kind"
"github.com/openconfig/kne/events"
"github.com/openconfig/kne/exec/run"
"github.com/openconfig/kne/metrics"
"github.com/openconfig/kne/pods"
cpb "github.com/openconfig/kne/proto/controller"
Expand All @@ -45,6 +47,7 @@
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/client-go/util/homedir"
log "k8s.io/klog/v2"

_ "github.com/openconfig/kne/topo/node/alpine"
Expand All @@ -61,6 +64,7 @@
)

var (
setPIDMaxScript = filepath.Join(homedir.HomeDir(), "kne-internal", "set_pid_max.sh")

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protojsonUnmarshaller = protojson.UnmarshalOptions{
AllowPartial: true,
DiscardUnknown: false,
Expand Down Expand Up @@ -484,6 +488,14 @@
uid++
}
for k, n := range nMap {
// If the script is found, then run it. Else silently ignore it.
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// The set_pid_max script modifies the kernel.pid_max value to
// be acceptable for the Cisco 8000e container.
if _, err := os.Stat(setPIDMaxScript); err == nil {
if err := run.LogCommand(setPIDMaxScript); err != nil {
return fmt.Errorf("failed to exec set_pid_max script: %w", err)
}
}
log.Infof("Adding Node: %s:%s", n.Name, n.Vendor)
nn, err := node.New(m.topo.Name, n, m.kClient, m.rCfg, m.basePath, m.kubecfg)
if err != nil {
Expand Down
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