linux - 无法连接到 redhat linux 上的 Jenkins 服务器

Question

我在我的 Red Hat Enterprise 6.3 上安装了 Jenkins。 jenkins 通过监听端口 8080 运行。

[root@linux]# service jenkins status
jenkins (pid  7526) is running...

JENKINS_PORT="8080"
JENKINS_LISTEN_ADDRESS="0.0.0.0"

但是，我无法通过网络浏览器或 cURL 连接到 Jenkins。 HTTP 连接的 TCP 连接是“ESTABLIASHED”，但 HTTP GET 请求一直在等待，Web 浏览器一直在加载。

 [root@linux]# netstat -an | grep 8080
    tcp        0      0 :::8080                     :::*                        LISTEN
    tcp        0      0 ::ffff:172.22.146.9:8080    ::ffff:171.70.233.226:58029 ESTABLISHED
    tcp        1      0 ::ffff:172.22.146.9:8080    ::ffff:171.70.233.226:58045 CLOSE_WAIT
    tcp        1      0 ::ffff:172.22.146.9:8080    ::ffff:171.70.233.226:58103 CLOSE_WAIT
    tcp        0      0 ::ffff:172.22.146.9:8080    ::ffff:171.70.233.226:58112 ESTABLISHED



mylaptop$ ping 172.22.146.9
PING 172.22.146.9 (172.22.146.9): 56 data bytes
64 bytes from 172.22.146.9: icmp_seq=0 ttl=57 time=6.384 ms
64 bytes from 172.22.146.9: icmp_seq=1 ttl=57 time=4.521 ms
64 bytes from 172.22.146.9: icmp_seq=2 ttl=57 time=4.095 ms
^C
--- 172.22.146.9 ping statistics ---enter code here
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 4.095/5.000/6.384/0.994 ms
mylaptop$ curl http://172.22.146.9:8080
<Pending forever here....>

nmap 扫描看起来也不错:

mylaptop$ nmap -p 8080 172.22.146.9

Starting Nmap 6.47 ( http://nmap.org ) at 2015-05-07 11:05 PDT
Nmap scan report for snmplab-linux9.cisco.com (172.22.146.9)
Host is up (0.0018s latency).
PORT     STATE SERVICE
8080/tcp open  http-proxy

Nmap done: 1 IP address (1 host up) scanned in 0.11 seconds

Answer 1

这是网络问题。 jenkins 默认的 http connect timeout 是 10s，但是请求 '/pluginManager/plugins' 花费超过 10s，因为响应大约 500KB，非常大。

var pluginManagerErrorTimeoutMillis = 10 * 1000;
...
exports.availablePlugins = function(handler) {
jenkins.get('/pluginManager/plugins', function(response) {
    if(response.status !== 'ok') {
        handler.call({ isError: true, errorMessage: response.message });
        return;
    }

    handler.call({ isError: false }, response.data);
}, {
    timeout: pluginManagerErrorTimeoutMillis,
    error: function(xhr, textStatus, errorThrown) {
        handler.call({ isError: true, errorMessage: errorThrown });
    }
});
};

您可以通过浏览器的开发者工具更改pluginManagerErrorTimeoutMillis。