feat: add nerdctl configuration file creation and offline checks

- Add a function to create the nerdctl configuration file if it doesn't already exist
- Specify the address and namespace in the newly created nerdctl configuration
- Update the installation process to include the creation of the nerdctl configuration file
- Introduce an offline installation check in the joinNode function for cluster management

Signed-off-by: ysicing <i@ysicing.me>

Author: ysicing

hack/manifests/scripts/node.sh

@@ -105,11 +105,26 @@ service_enable_and_start() {
     return 0
 }
 
+# create nerdctl config
+create_nerdctl_file() {
+  [ -d "/etc/nerdctl" ] || mkdir /etc/nerdctl
+  file="/etc/nerdctl/nerdctl.toml"
+  if [ -f "$file" ]; then
+    file="/etc/nerdctl/z.nerdctl.toml"
+  fi
+  cat > "$file" <<EOF
+# $file
+address        = "unix:///run/k3s/containerd/containerd.sock"
+namespace      = "k8s.io"
+EOF
+}
+
 # --- run the install process --
 {
     create_symlinks
     systemd_disable
     # check_docker
     # create_env_file
+    create_nerdctl_file
     service_enable_and_start
 }

pkg/cluster/cluster.go

@@ -413,6 +413,7 @@ func (c *Cluster) joinNode(ip string, master bool, cfg *config.Config, sshClient
 	if err := sshClient.Copy(ip, tplSrc, tplDst); err != nil {
 		return errors.Errorf("%s copy tpl (%s:%s->%s:%s) failed, reason: %v", t, cfg.Cluster.InitNode, tplSrc, ip, tplDst, err)
 	}
+	c.OffLine = cfg.Install.Type == "offline"
 	if err := c.preinit(cfg.Cluster.InitNode, ip, sshClient); err != nil {
 		return err
 	}