firewalld: 列印除錯資訊

刘宏缔的架构森林發表於2024-08-29

一,開啟除錯選項

1,官方文件地址:

https://firewalld.org/documentation/howto/debug-firewalld.html

2, 編輯配置檔案:

[root@blog ~]# vi /etc/sysconfig/firewalld

把FIREWALLD_ARGS=--debug=10 這一行取消註釋就可以

[root@blog ~]# more /etc/sysconfig/firewalld
# firewalld command line args
# possible values: --debug
FIREWALLD_ARGS=--debug=10
#FIREWALLD_ARGS=

說明:註釋級別:如圖:

firewalld: 列印除錯資訊

二,檢視日誌中的除錯資訊

日誌檔案位於 /var/log/firewalld

檢視檔案:

[root@blog ~]# tail -100 /var/log/firewalld

內容例子:

2024-08-29 11:24:16 DEBUG2: config.Introspect()
2024-08-29 11:24:16 DEBUG2: config.Introspect()
2024-08-29 11:24:16 DEBUG2: config.Introspect()
2024-08-29 11:24:16 DEBUG1: zone.removeRichRule('drop', 'rule family="ipv4" source ipset="nginxcc" drop')
2024-08-29 11:24:16 DEBUG4: <class 'firewall.core.fw_transaction.FirewallZoneTransaction'>.execute(True)
2024-08-29 11:24:16 DEBUG4: <class 'firewall.core.fw_transaction.FirewallZoneTransaction'>.prepare(True, ...)
2024-08-29 11:24:16 DEBUG4: <class 'firewall.core.fw_transaction.FirewallZoneTransaction'>.prepare(True, ...)
2024-08-29 11:24:16 DEBUG4: <class 'firewall.core.fw_transaction.FirewallZoneTransaction'>.pre()
2024-08-29 11:24:16 DEBUG2: <class 'firewall.core.nftables.nftables'>: rule ref cnt 0, /usr/sbin/nft 
                    delete rule inet firewalld filter_IN_drop_deny meta nfproto ipv4 ip saddr @nginxcc drop
2024-08-29 11:24:16 DEBUG2: <class 'firewall.core.nftables.nftables'>: /usr/sbin/nft delete rule inet firewalld 
                    filter_IN_drop_deny handle 530
2024-08-29 11:24:16 DEBUG4: <class 'firewall.core.fw_transaction.FirewallZoneTransaction'>.post()
2024-08-29 11:24:16 DEBUG1: zone.RichRuleRemoved('drop', 'rule family="ipv4" source ipset="nginxcc" drop')

說明:可以看到除錯資訊把nft對規則的操作記錄了下來

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