# Service Selector 检查
## 介绍
检查每个 Service 的 selector 是否有对应 Pod
## 信息
- ScriptCode: Builtin_Service_001
- Kind: Service
- Group:
- Version: v1
- TimeoutSeconds: 30
## 代码
```lua
-- 获取Selector 定义文档
local doc, err = kubectl:GVK("", "v1", "Service"):Cache(10):Doc("spec.selector")
if err then
print( "获取 Service Doc 失败".. tostring(err))
return
end
-- 检查每个 Service 的 selector 是否有对应 Pod，Pod 查询限定在 Service 所在的 namespace
local svcs, err = kubectl:GVK("", "v1", "Service"):AllNamespace(""):List()
if not err and svcs then
for _, svc in ipairs(svcs) do
if svc.spec and svc.spec.selector then
local selector = svc.spec.selector
local labelSelector = ""
for k, v in pairs(selector) do
if labelSelector ~= "" then
labelSelector = labelSelector .. ","
end
labelSelector = labelSelector .. k .. "=" .. v
end
-- 这里使用 Namespace(svc.metadata.namespace) 保证只查找与 Service 相同命名空间下的 Pod
local pods, err = kubectl:GVK("", "v1", "Pod"):Namespace(svc.metadata.namespace):Cache(10):WithLabelSelector(labelSelector):List()
local count = 0
if not err and pods then
for _, _ in pairs(pods) do count = count + 1 end
end
if count == 0 then
check_event("失败", "Service " .. svc.metadata.name .. " selector " .. labelSelector .. " 应该至少一个pod, 但是现在没有。" .. "spec.selector定义" .. doc, {name=svc.metadata.name, selector=labelSelector, namespace=svc.metadata.namespace})
end
end
end
else
print("Service 列表获取失败: " .. tostring(err))
end
print("Service Selector 检查完成")
```
