网络设备syslog推送配置

• cisco交换机

logging host 10.100.18.18 transport udp port 5002

• h3c交换机

info-center enable
info-center source default channel 2 trap state off
info-center loghost 10.100.18.18 port 5003

• 华为交换机（默认端口udp514）

info-center enable
info-center loghost 10.100.18.18
info-center timestamp log short-date
info-center timestamp trap short-date

elk配置

Logstash 的配置

• /opt/elk/logstash-6.2.4/config/network.conf

input{
    tcp {port => 5002 type => "Cisco"}
    udp {port => 514 type => "HUAWEI"}
    udp {port => 5002 type => "Cisco"}
    udp {port => 5003 type => "H3C"}
}
filter {
    if [type] == "Cisco"{
    grok{
    match => { "message" => "<%{BASE10NUM:syslog_pri}>%{NUMBER:log_sequence}: .%{SYSLOGTIMESTAMP:timestamp}: %%{DATA:facility}-%{POSINT:severity}-%{CISCO_REASON:mnemonic}: %{GREEDYDATA:message}" }
    match => { "message" => "<%{BASE10NUM:syslog_pri}>%{NUMBER:log_sequence}: %{SYSLOGTIMESTAMP:timestamp}: %%{DATA:facility}-%{POSINT:severity}-%{CISCO_REASON:mnemonic}: %{GREEDYDATA:message}" }
    add_field => {"severity_code" => "%{severity}"}
    overwrite => ["message"]
    }    
}
    else if [type] == "H3C"{
    grok {
    match => { "message" => "<%{BASE10NUM:syslog_pri}>%{SYSLOGTIMESTAMP:timestamp} %{YEAR:year} %{DATA:hostname} %%%{DATA:vvmodule}/%{POSINT:severity}/%{DATA:digest}: %{GREEDYDATA:message}" }
    remove_field => [ "year" ]
    add_field => {"severity_code" => "%{severity}"}
    overwrite => ["message"]
    }
}

      else if [type] == "HUAWEI"{
    grok {
    match => { "message" => "<%{BASE10NUM:syslog_pri}>%{SYSLOGTIMESTAMP:timestamp} %{DATA:hostname} %%%{DATA:ddModuleName}/%{POSINT:severity}/%{DATA:Brief}:%{GREEDYDATA:message}"}
    match => { "message" => "<%{BASE10NUM:syslog_pri}>%{SYSLOGTIMESTAMP:timestamp} %{DATA:hostname} %{DATA:ddModuleName}/%{POSINT:severity}/%{DATA:Brief}:%{GREEDYDATA:message}"}
    remove_field => [ "timestamp" ]
    add_field => {"severity_code" => "%{severity}"}
    overwrite => ["message"]
    }
}
 

mutate {
        gsub => [
        "severity", "0", "Emergency",
        "severity", "1", "Alert",
        "severity", "2", "Critical",
        "severity", "3", "Error",
        "severity", "4", "Warning",
        "severity", "5", "Notice",
        "severity", "6", "Informational",
        "severity", "7", "Debug"
            
        ]
    }
}
output{
#  stdout {  }
    elasticsearch {
        index => "syslog-%{+YYYY.MM.dd}"
        hosts => ["your_ipaddress:9200"]
    }
}

• /opt/elk/logstash-6.2.4/start-network.sh

nohup bin/logstash -f config/network-device.conf  -l logs/networklog --path.data data/network > /dev/null 2>&1 &