解决chromedriver启动错误：bind() failed: Cannot assign requested address (99)

#解决chromedriver启动错误：bind() failed: Cannot assign requested address (99)| 来源: 网络整理| 查看: 265

记录于2021-02-22，OS为阿里云轻量应用服务器CentOS 7.3

[root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver Starting ChromeDriver 88.0.4324.96 (68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}) on port 9515 Only local connections are allowed. Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe. [1614050923.823][SEVERE]: bind() failed: Cannot assign requested address (99) ChromeDriver was started successfully.

先说结论：如果网络环境不需要用到ipv6，可以忽略此错误。该错误不会影响chromedriver 在ipv4下的运行。

配置IPv6地址可以解决此错误

服务器是阿里云的轻量应用服务器，OS是CentOS 7.3 阿里云官方文档：配置IPv6地址，包括自动配置工具下载和手动配置方法

下载完成后得到工具ecs-util-ipv6，运行它，成功则返回如下信息：

[root@izbp112i9bshiu2ybihp3mz admin]# chmod +x ecs-utils-ipv6 [root@izbp112i9bshiu2ybihp3mz admin]# ./ecs-utils-ipv6 [Info] ECS Utils IPv6 1.0.3. [Info] IPv6 Auto Config Begin... [Warn] get [00:16:3e:10:45:90] ipv6 metadata null [Warn] get [00:16:3e:10:45:90] prefix len metadata null [Warn] get [00:16:3e:10:45:90] ipv6 gateway metadata null [Info] Config eth0... [Done] IPv6 Auto Config Finished. [root@izbp112i9bshiu2ybihp3mz admin]# ifconfig|grep -i inet6 inet6 fe80::216:3eff:fe10:4590 prefixlen 64 scopeid 0x20 inet6 ::1 prefixlen 128 scopeid 0x10

此时运行chromedriver，发现错误解决了：

[root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver Starting ChromeDriver 88.0.4324.96 (68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}) on port 9515 Only local connections are allowed. Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe. ChromeDriver was started successfully. 网上一些文章提到增加运行参数可解决此问题

网上一些文章写到增加运行参数--verbose或者--whitelisted-ips解决此问题

--verbose：输出所有级别的日志

用此参数可以得到错误的全部信息listen on IPv6 failed with error ERR_ADDRESS_INVALID

[root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver -help | grep verbose --verbose log verbosely (equivalent to --log-level=ALL) --replayable (experimental) log verbosely and don't truncate long strings so that the log can be replayed. [root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver --verbose Starting ChromeDriver 88.0.4324.96 (68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}) on port 9515 Only local connections are allowed. Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe. [1614051592.443][SEVERE]: bind() failed: Cannot assign requested address (99) [1614051592.443][INFO]: listen on IPv6 failed with error ERR_ADDRESS_INVALID ChromeDriver was started successfully. --whitelisted-ips和--allowed-ips

在88版本的chromedriver的帮助信息中没有此参数，但是这个参数还可以使用：

[root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver --version ChromeDriver 88.0.4324.96 (68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}) [root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver -help | grep ips --allowed-ips comma-separated allowlist of remote IP addresses which are allowed to connect to ChromeDriver [root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver --whitelisted-ips Starting ChromeDriver 88.0.4324.96 (68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}) on port 9515 All remote connections are allowed. Use an allowlist instead! Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe. ChromeDriver was started successfully. ^C [root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver --whitelisted-ips=66.66.66.72,66.66.66.71 Starting ChromeDriver 88.0.4324.96 (68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}) on port 9515 Remote connections are allowed by an allowlist (66.66.66.72,66.66.66.71). Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe. ChromeDriver was started successfully.

与--whitelisted-ips相近的有一个参数--allowed-ips，测试后发现作用一样的

[root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver --allowed-ips Starting ChromeDriver 88.0.4324.96 (68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}) on port 9515 All remote connections are allowed. Use an allowlist instead! Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe. ChromeDriver was started successfully. ^C [root@izbp112i9bshiu2ybihp3mz admin]# ./chromedriver --allowed-ips=66.66.66.72,66.66.66.71 Starting ChromeDriver 88.0.4324.96 (68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}) on port 9515 Remote connections are allowed by an allowlist (66.66.66.72,66.66.66.71). Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe. ChromeDriver was started successfully.

增加这个参数后，确实不会出现bind() failed，原理不清楚这个参数的作用：是否允许远程ip连接

只允许本地连接

./chromedriver：Only local connections are allowed.

允许所有远程连接

./chromedriver --allowed-ips：All remote connections are allowed. Use an allowlist instead!

只允许列表中的ip连接

./chromedriver --allowed-ips=66.66.66.72,66.66.66.71：Remote connections are allowed by an allowlist (66.66.66.72,66.66.66.71).

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