{"id":1929,"date":"2020-05-07T17:06:22","date_gmt":"2020-05-07T14:06:22","guid":{"rendered":"https:\/\/artem.services\/?p=1924"},"modified":"2020-05-07T17:35:18","modified_gmt":"2020-05-07T14:35:18","slug":"1929","status":"publish","type":"post","link":"https:\/\/artem.services\/?p=1929&lang=en","title":{"rendered":"FIX ERROR — CentOS+Nginx+Jenkins: 502 Bad Gateway"},"content":{"rendered":"

When running Nginx<\/strong> as a reverse proxy to Jenkins<\/strong> on CentOS<\/strong>, a 502<\/strong> error may occur. Nginx<\/strong> error log will be as follows:<\/p>\n

2020\/05\/07 13:32:33 [crit] 9665#9665: *1 connect() to 127.0.0.1:8080 failed (13: Permission denied) while connecting to upstream, client: 1.2.3.4, server: jenkins.artem.services, request: "GET \/ HTTP\/1.1", upstream: "http:\/\/127.0.0.1:8080\/", host: "jenkins.artem.services"<\/p><\/blockquote>\n

 <\/p>\n

Solution:<\/h3>\n

Reason SELinux<\/strong>. You can either allow Jenkins<\/strong> or disable SELinux<\/strong>.<\/p>\n

Option to disable SELinux<\/h4>\n

Open the configuration file:<\/p>\n

\r\nvim \/etc\/selinux\/config\r\n<\/pre>\n
 <\/p>\n
And change "enforcing<\/strong>" to "disabled<\/strong>"<\/p>\n
\r\nSELINUX=disabled\r\n<\/pre>\n
 <\/p>\n
And restart the server.<\/p>\n
In CentOS 6<\/strong>, you can disable SELinux<\/strong> without rebooting (CentOS 7\/8<\/strong> — require a reboot) by running the following command:<\/p>\n
\r\necho 0 > \/selinux\/enforce\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
When running Nginx as a reverse proxy to Jenkins on CentOS, a 502 error may occur. Nginx error log will be as follows: 2020\/05\/07 13:32:33 [crit] 9665#9665: *1 connect() to 127.0.0.1:8080 failed (13: Permission denied) while connecting to upstream, client: 1.2.3.4, server: jenkins.artem.services, request: "GET \/ HTTP\/1.1", upstream: "http:\/\/127.0.0.1:8080\/", host: "jenkins.artem.services"   Solution: Reason SELinux. … \u041f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0442\u044c \u0447\u0438\u0442\u0430\u0442\u044c "FIX ERROR — CentOS+Nginx+Jenkins: 502 Bad Gateway"<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[357],"tags":[1601,1603,855,1261,361,365,617,345,1605],"_links":{"self":[{"href":"https:\/\/artem.services\/index.php?rest_route=\/wp\/v2\/posts\/1929"}],"collection":[{"href":"https:\/\/artem.services\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/artem.services\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/artem.services\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/artem.services\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1929"}],"version-history":[{"count":3,"href":"https:\/\/artem.services\/index.php?rest_route=\/wp\/v2\/posts\/1929\/revisions"}],"predecessor-version":[{"id":1932,"href":"https:\/\/artem.services\/index.php?rest_route=\/wp\/v2\/posts\/1929\/revisions\/1932"}],"wp:attachment":[{"href":"https:\/\/artem.services\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/artem.services\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/artem.services\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}