I want to take a note here for all commands we met when running a CDN service.

1. nslookup www.simplenature.cn
2. nslookup -type=cname www.simplenature.cn
3. nslookup -type=mx simplenature.cn
4. nslookup -q=txt simplenature.cn

1. dig www.simplenature.cn

• wget -S “http://xxxxx”
• wget -S “https://xxxx” -e –http_proxy=114.123.11.11
• wget -S “http://cname.domain” –header=host:domain

• curl -voa “http://xxxx”
• curl -voa “http://xxxx” -x “114.123.11.11”
• curl -voa “http://xxxx.cname.domain/xxx” –header “host:domain”

• systemctl status elasticsearch.service -l
• systemctl enable elasticsearch
• systemctl stop elasticsearch
• systemctl disable elasticsearch
• systemctl start elasticsearch
• systemctl restart elasticsearch

• journalctl -u elasticsearch