截取一段错乱的配置：
kubectl -n monitoring get cm blackbox-exporter-configuration -o yaml
apiVersion: v1
data:
config.yml: "\"modules\":\n \"http_2xx\":\n \"http\":\n \"preferred_ip_protocol\":
\"ip4\"\n \"prober\": \"http\"\n \"http_post_2xx\":\n \"http\":\n \"method\":
\"POST\"\n \"preferred_ip_protocol\": \"ip4\"\n \"prober\": \"http\"\n
\ \"http_basic_auth_example\":\n \"prober\": http\n \"timeout\" 5s\n \"http\":\n
\ \"method\": \"POST\"\n \"preferred_ip_protocol\": \"ip4\"\n \"headers\":\n
\ \"Host\": \"127.0.0.1\"\n \"basic_auth\":\n \"username\":
\"admin\"\n \"password\": \"Cyc12345\" \n \"irc_banner\":\n \"prober\":
\"tcp\"\n \"tcp\":\n \"preferred_ip_protocol\": \"ip4\"\n \"query_response\":\n
\ - \"send\": \"NICK prober\"\n - \"send\": \"USER prober prober prober
:prober\"\n - \"expect\": \"PING :([^ ]+)\"\n \"send\": \"PONG ${1}\"\n
\ - \"expect\": \"^:[^ ]+ 001\"\n \"pop3s_banner\":\n \"prober\": \"tcp\"\n
\ \"tcp\":\n \"preferred_ip_protocol\": \"ip4\"\n \"query_response\":\n
\ - \"expect\": \"^+OK\"\n \"tls\": true\n \"tls_config\":\n \"insecure_skip_verify\":
false\n \"ssh_banner\":\n \"prober\": \"tcp\"\n \"tcp\":\n \"preferred_ip_protocol\":
\"ip4\"\n \"query_response\":\n - \"expect\": \"^SSH-2.0-\"\n \"tcp_connect\":\n
\ \"prober\": \"tcp\"\n \"tcp\":\n \"preferred_ip_protocol\": \"ip4\"\n
\ \"icmp_example\":\n \"prober\": \"icmp\"\n \"timeout\": \"5s\"\n \"icmp\":\n
\ \"preferred_ip_protocol\": \"ip4\""
kind: ConfigMap
可能是由于配置文件文件自身存在制表符TAB或者空格，Kubernetes ConfigMap在load过程中发现文件中包含tab缩进，直接转化为\n\t。文章来源：https://www.toymoban.com/news/detail-646620.html
# 使用以下方法删除尾随空格
sed -i -E 's/[[:space:]]+$//g' file.txt
# 使用空格替换制表符
sed -i 's/\t/ /g' file.txt
删除原有的重新生成configmap文章来源地址https://www.toymoban.com/news/detail-646620.html
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