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Merged
merged 2 commits into from
Nov 25, 2024
Merged

Add flags for netns attach #68

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8b4af94
Add flags for netns attach
Nov 22, 2024
8b70029
Update kubectl-node_shell
jmcshane Nov 25, 2024
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3 changes: 3 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,9 @@ kubectl node-shell <node> --image <image>
# Use X-mode (mount /host, and do not enter host namespace)
kubectl node-shell -x <node>

# Skip specific namespace types to enter, choose any of ipc, mount, pid, net, uts
kubectl node-shell <node> --no-ipc

# Execute custom command
kubectl node-shell <node> -- echo 123

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44 changes: 43 additions & 1 deletion kubectl-node_shell
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Expand Up @@ -15,6 +15,11 @@ x_mode=0
labels="${KUBECTL_NODE_SHELL_LABELS}"
pod_running_timeout="${KUBECTL_NODE_SHELL_POD_RUNNING_TIMEOUT:-1m}"
custom_image=""
use_ipc=true
use_mount=true
use_pid=true
use_net=true
use_uts=true

if [ -t 0 ]; then
tty=true
Expand Down Expand Up @@ -71,6 +76,26 @@ while [ $# -gt 0 ]; do
shift
shift
;;
--no-ipc)
use_ipc=false
shift
;;
--no-mount)
use_mount=false
shift
;;
--no-pid)
use_pid=false
shift
;;
--no-net)
use_net=false
shift
;;
--no-uts)
use_uts=false
shift
;;
--)
shift
break
Expand Down Expand Up @@ -116,7 +141,24 @@ else # If the OS isn't windows, assume linux
image="${custom_image:-${KUBECTL_NODE_SHELL_IMAGE:-$default_image}}"
name="nsenter"
pod="${name}-$(env LC_ALL=C tr -dc a-z0-9 </dev/urandom | head -c 6)"
cmd_start='"nsenter", "--target", "1", "--mount", "--uts", "--ipc", "--net", "--pid"'
cmd_start='"nsenter", "--target", "1"'
# , "--mount", "--uts", "--ipc", "--net", "--pid"
if [ "$use_mount" = true ]; then
cmd_start="${cmd_start}, \"--mount\""
fi
if [ "$use_uts" = true ]; then
cmd_start="${cmd_start}, \"--uts\""
fi
if [ "$use_ipc" = true ]; then
cmd_start="${cmd_start}, \"--ipc\""
fi
if [ "$use_net" = true ]; then
cmd_start="${cmd_start}, \"--net\""
fi
if [ "$use_pid" = true ]; then
cmd_start="${cmd_start}, \"--pid\""
fi

cmd_arg_prefix=', "--"'
cmd_default=', "bash", "-l"'
security_context='{"privileged":true}'
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