登录命令
根据机器ip使用kubectl登录机器(field-selector):
1 | !/bin/bash |
根据机器ip使用kubectl登录机器(label):
1 | !/bin/bash |
更智能版本的kubectl登录命令：
- 查看KUBECONFIG_DIR目录下有哪些kubeconfig可以用
- 校验目标登录的ip格式
- 查询并解析pod信息
- 查询该pod有哪些容器并展示
- 查询选定的容器有哪些用户(与user_array做交集)，支持自定义输入用户
- 根据以上信息登录目标ip对应pod的选定容器
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169!/bin/bash
添加特定用户
user_array=("root" "admin" "log")
从指定目录获取所有 kubeconfig 文件
KUBECONFIG_DIR="/Users/king/.kube"
初始化 kubectl 命令前缀
KUBECTL_CMD="kubectl"
确保将信息打印到终端里，即使在函数之间$(...)调用的场景
function print_to_console() {
printf "%s\n" "$1" >&2
}
检查IP地址是否符合正确的格式
function is_valid_ip() {
local ip=$1
local valid_regex='^([0-9]{1,3}\.){3}[0-9]{1,3}$'
if [[ $ip =~ $valid_regex ]]; then
# 确保每个数字部分小于等于255
IFS='.' read -r -a octets <<< "$ip"
for octet in "${octets[@]}"; do
if ((octet > 255)); then
return 1
fi
done
return 0
fi
return 1
}
KUBECONFIGS=($(find $KUBECONFIG_DIR -maxdepth 1 -name "*.config" -print))
检查是否找到 kubeconfig 文件
if [ ${#KUBECONFIGS[@]} -eq 0 ]; then
print_to_console "没有找到任何 kubeconfig 文件在目录: $KUBECONFIG_DIR"
else
# 提供给用户选择的菜单，动态生成选项范围提示
cat << EOF
----------------------------------------------
|*******Please Enter Your Choice:[1-${#KUBECONFIGS[@]}]*******|
----------------------------------------------
EOF
# 输出可供选择的配置文件选项
for i in "${!KUBECONFIGS[@]}"; do
print_to_console "* $(($i + 1)) ${KUBECONFIGS[$i]}"
done
# 捕获用户输入并确保在合法范围内
while true; do
read -p "please input your choice [1-${#KUBECONFIGS[@]}] (or press Enter to skip): " num
if [[ -z "$num" ]]; then
break
elif [[ "$num" =~ ^[0-9]+$ ]] && [ "$num" -ge 1 ] && [ "$num" -le ${#KUBECONFIGS[@]} ]; then
selected_config="${KUBECONFIGS[$((num - 1))]}"
KUBECTL_CMD="kubectl --kubeconfig=$selected_config"
print_to_console "Using configuration file: $selected_config"
break
else
print_to_console "Invalid choice. Please try again."
fi
done
fi
输出用户选择的配置文件
selected_config="${KUBECONFIGS[$((num - 1))]}"
print_to_console "You selected: $selected_config"
捕获用户输入的targetIP
while true; do
read -p "please input your target ip: " targetIP
# 检查输入是否为空和格式有效性
if [[ -z "$targetIP" ]]; then
print_to_console "IP 地址不能为空，请重新输入。"
elif ! is_valid_ip "$targetIP"; then
print_to_console "无效的IP格式，请输入有效的IP地址。"
else
print_to_console "您输入的IP地址是: $targetIP"
break
fi
done
获取 Pod 信息
podinfo=$($KUBECTL_CMD get pod --all-namespaces --field-selector=status.podIP="$targetIP" -o wide | grep -v NAME | head -n 1)
检查 podinfo 是否为空
if [[ -z "$podinfo" ]]; then
print_to_console "未能获取到对应 IP 的 Pod 信息，退出脚本。"
exit 1
fi
提取命名空间和 Pod 名称
ns=$(echo "${podinfo}" | awk '{print $1}')
pod=$(echo "${podinfo}" | awk '{print $2}')
检查 ns 和 pod 是否为空
if [[ -z "$ns" || -z "$pod" ]]; then
print_to_console "未能提取到命名空间或 Pod 名称，退出脚本。"
exit 1
fi
print_to_console "Namespace: $ns, Pod: $pod"
获取容器列表
containers=($($KUBECTL_CMD get pod $pod -n $ns -o jsonpath='{.spec.containers[*].name}'))
selected_container=""
if [ ${#containers[@]} -gt 0 ]; then
print_to_console "请选择一个容器 (或直接按 Enter 跳过使用默认容器):"
for i in "${!containers[@]}"; do
print_to_console "* $(($i + 1)) ${containers[$i]}"
done
while true; do
read -p "please input your choice [1-${#containers[@]}] (or press Enter to skip): " container_num
if [[ -z "$container_num" ]]; then
break
elif [[ "$container_num" =~ ^[0-9]+$ ]] && [ "$container_num" -ge 1 ] && [ "$container_num" -le ${#containers[@]} ]; then
selected_container="${containers[$((container_num - 1))]}"
print_to_console "Selected container: $selected_container"
break
else
print_to_console "Invalid choice. Please try again."
fi
done
fi
解析容器中的用户并添加到用户数组中
while IFS=: read -r username _ uid _; do
if [[ $uid -ge 1000 && $username != "nobody" ]]; then
user_array+=("$username")
fi
done <<< "$user_list"
显示可供选择的用户列表
print_to_console "请选择一个用户 (或自定义输入):"
for i in "${!user_array[@]}"; do
print_to_console "* $(($i + 1)) ${user_array[$i]}"
done
print_to_console "* $(( ${#user_array[@]} + 1 )) 自定义输入 "
捕获用户选择的用户
while true; do
read -p "please input your choice [1-$(( ${#user_array[@]} + 1 ))]: " user_num
if [[ "$user_num" =~ ^[0-9]+$ ]] && [ "$user_num" -ge 1 ] && [ "$user_num" -le $(( ${#user_array[@]} + 1 )) ]; then
if [ "$user_num" -eq $(( ${#user_array[@]} + 1 )) ]; then
read -p "请输入自定义用户名: " targetUser
else
targetUser="${user_array[$((user_num - 1))]}"
fi
print_to_console "Selected user: $targetUser"
break
else
print_to_console "Invalid choice. Please try again."
fi
done
执行命令
if [[ -n "$selected_container" ]]; then
print_to_console "$KUBECTL_CMD exec -it -n ${ns} ${pod} -c ${selected_container} -- su - $targetUser"
$KUBECTL_CMD exec -it -n ${ns} ${pod} -c ${selected_container} -- su - $targetUser
else
print_to_console "$KUBECTL_CMD exec -it -n ${ns} ${pod} -- su - $targetUser"
$KUBECTL_CMD exec -it -n ${ns} ${pod} -- su - $targetUser
fi
查询命令
根据机器ip(field-selector)查询pod:
1 | !/bin/bash |
根据label查询pod:
1 | !/bin/bash |
导出yaml
根据机器ip使用kubectl导出机器yaml:
1 | !/bin/bash |
describe
根据namespace和podName进行describe
1 | local namespace="longtermbase" |
清理terminating的pod
通过清理finalizers实现
1 | local namespace="" |
强制删除
1 | local namespace="" |
复制文件到pod容器
1 | local namespace="" |