Maintenance script
Warning
Use at your own risk (dangerous steps commented)
#!/bin/bash
set -e
USE_SSH=false
DRAINMODE=""
while getopts ":sd:" opt; do
case ${opt} in
s )
USE_SSH=true
echo "SSH mode enabled."
;;
d )
DRAINMODE=$OPTARG
echo "Drain mode set to: $DRAINMODE"
;;
\? )
echo "Invalid option: $OPTARG" 1>&2
echo "Usage: $0 [-s] [-d DRAINMODE]"
echo " -s Use SSH to reboot nodes instead of oc debug"
echo " -d Set drain mode options (e.g., --ignore-daemonsets --delete-emptydir-data --force --disable-eviction)"
exit 1
;;
esac
done
drain_node() {
local node=$1
echo "Draining node: $node with options: $DRAINMODE"
#oc adm drain $node $DRAINMODE
}
reboot_node() {
echo $USE_SSH
local node=$1
if $USE_SSH; then
echo "Rebooting node using SSH: $node"
#ssh core@$node sudo reboot
else
echo "Rebooting node using oc debug: $node"
#oc debug node/$node -- chroot /host reboot
fi
}
is_node_ready() {
local node=$1
oc get node $node --no-headers | awk '{print $2}'
}
nodes=$(oc get nodes -o jsonpath='{.items[*].metadata.name}')
for node in $nodes; do
echo "Processing node: $node"
drain_node $node
reboot_node $node
echo "Waiting for node $node to be ready..."
while [[ $(is_node_ready $node) != "Ready" ]]; do
sleep 30
done
echo "Node $node is ready. Proceeding with the next node..."
done
echo "All nodes have been successfully restarted."