Jenkins在centos6.9（Final）下遇到如题所示没法路由主机问题，此问题是在部署阶段报出。我用Oracle VirtualBox通过实现的时候直接用的宿主IP 这里在centos直接自己安装的docker，所以出现差异导致找不到主机路由。
没法路由主机问题详细日志
Started by user cvnavi
Building in workspace /root/.jenkins/workspace/webtest-centos
Fetching changes from the remote Git repository
Checking out Revision 957ce0e60c3abcd970c025b6b92bc2ef356a8bf9 (refs/remotes/origin/master)
Commit message: "Update "
[webtest-centos] $ /root/.jenkins/tools/.Maven_MavenInstallation/apache-maven-3.3.9/bin/mvn -f clean install
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building webtest 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ webtest ---
[INFO] Deleting /root/.jenkins/workspace/webtest-centos/target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ webtest ---
[WARNING] Using platform encoding (ANSI_X3.4-1968 actually) to copy filtered resources, . build is platform dependent!
[INFO] skip non existing resourceDirectory /root/.jenkins/workspace/webtest-centos/src/main/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ webtest ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding ANSI_X3.4-1968, . build is platform dependent!
[INFO] Compiling 1 source file to /root/.jenkins/workspace/webtest-centos/target/classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ webtest ---
[WARNING] Using platform encoding (ANSI_X3.4-1968 actually) to copy filtered resources, . build is platform dependent!
[INFO] skip non existing resourceDirectory /root/.jenkins/workspace/webtest-centos/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ webtest ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ webtest ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-war-plugin:2.2:war (default-war) @ webtest ---
[INFO] Packaging webapp
[INFO] Assembling webapp [webtest] in [/root/.jenkins/workspace/webtest-centos/target/webtest]
[INFO] Processing war project
[INFO] Copying webapp resources [/root/.jenkins/workspace/webtest-centos/src/main/webapp]
[INFO] Webapp assembled in [25 msecs]
[INFO] Building war: /root/.jenkins/workspace/webtest-centos/target/
[INFO] WEB-INF/ already added, skipping
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ webtest ---
[INFO] Installing /root/.jenkins/workspace/webtest-centos/target/ to /root/.m2/repository/com/boonya/app/webtest/0.0.1-SNAPSHOT/webtest-0.0.
[INFO] Installing /root/.jenkins/workspace/webtest-centos/ to /root/.m2/repository/com/boonya/app/webtest/0.0.1-SNAPSHOT/webtest-0.0.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.870 s
[INFO] Finished at: 2017-08-14T12:12:33+00:00
[INFO] Final Memory: 20M/476M
[INFO] ------------------------------------------------------------------------
Deploying /root/.jenkins/workspace/webtest-centos/target/ to container Tomcat Remote with context webtest
ERROR: Build step failed with exception
: Failed to redeploy [/root/.jenkins/workspace/webtest-centos/target/]
at (:192)
at (:77)
at $(:147)
at $(:117)
at (:998)
at (:976)
at (:114)
at (:93)
at (:64)
at $(:45)
at $(:730)
at $(:676)
at $BuildExecution.post2(:186)
at $(:621)
at (:1760)
at (:43)
at (:97)
at (:415)
Caused by: : No route to host (Host unreachable)
at (Native Method)
at (:350)
at (:206)
at (:188)
at (:392)
at (:589)
at (:538)
at (:180)
at (:432)
at (:527)
at .<init>(:211)
at (:308)
at (:326)
at (:1202)
at .plainConnect0(:1138)
at (:1032)
at (:966)
at (:561)
at (:876)
at (:889)
at (:173)
... 17 more
: No route to host (Host unreachable)
at (Native Method)
at (:350)
at (:206)
at (:188)
at (:392)
at (:589)
at (:538)
at (:180)
at (:432)
at (:527)
at .<init>(:211)
at (:308)
at (:326)
at (:1202)
at .plainConnect0(:1138)
at (:1032)
at (:966)
at (:561)
at (:876)
at (:889)
at (:173)
at (:77)
at $(:147)
at $(:117)
at (:998)
at (:976)
at (:114)
at (:93)
at (:64)
at $(:45)
at $(:730)
at $(:676)
at $BuildExecution.post2(:186)
at $(:621)
at (:1760)
at (:43)
at (:97)
at (:415)
Build step 'Deploy war/ear to a container' marked build as failure
Finished: FAILURE
注：此问题与镜像的核心系统是centos还是ubuntu无关，两种镜像都拉取测试过都是此问题。
查看iptables状态
[root@mysqlserver ~]# service iptables status
Table: nat
Chain PREROUTING (policy ACCEPT)
num target prot opt source destination
1 DOCKER all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL
Chain POSTROUTING (policy ACCEPT)
num target prot opt source destination
1 MASQUERADE all -- 172.17.0.0/16 0.0.0.0/0
2 MASQUERADE tcp -- 172.17.0.1 172.17.0.1 tcp dpt:8080
3 MASQUERADE tcp -- 172.17.0.2 172.17.0.2 tcp dpt:8080
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
1 DOCKER all -- 0.0.0.0/0 !127.0.0.0/8 ADDRTYPE match dst-type LOCAL
Chain DOCKER (2 references)
num target prot opt source destination
1 DNAT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:8091 to:172.17.0.1:8080
2 DNAT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:18091 to:172.17.0.2:8080
Table: filter
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:10050 state NEW,ESTABLISHED
2 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:21 state NEW,ESTABLISHED
3 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:3306 state NEW,ESTABLISHED
4 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:3036
5 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
6 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0
7 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
8 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
9 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain FORWARD (policy ACCEPT)
num target prot opt source destination
1 DOCKER all -- 0.0.0.0/0 0.0.0.0/0
2 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
3 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
4 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
5 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp spt:10050 state ESTABLISHED
2 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp spt:3306 state ESTABLISHED
Chain DOCKER (1 references)
num target prot opt source destination
1 ACCEPT tcp -- 0.0.0.0/0 172.17.0.1 tcp dpt:8080
2 ACCEPT tcp -- 0.0.0.0/0 172.17.0.2 tcp dpt:8080
[root@mysqlserver ~]#
查看Tomcat管理运行IP地址
Tomcat 管理地址：http://10.10.11.218:18091/manager/html
| Server Information | |||||||
| Tomcat Version | JVM Version | JVM Vendor | OS Name | OS Version | OS Architecture | Hostname | IP Address |
| Apache Tomcat/8.5.16 | 1.8.0_121-b13 | Oracle Corporation | Linux | 2.6.32-504.el6.x86_64 | amd64 | a74e9c3227c0 | 172.17.0.2 |
所有映射地址都对上了，但是确仍然报无法路由到主机。
推测错误原因
docker -d
INFO[0000] Listening for HTTP on unix (/var/run/)
WARN[0000] You are running linux kernel version 2.6.32-504.el6.x86_64, which might be unstable running docker. Please upgrade your kernel to 3.10.0.
INFO[0000] [graphdriver] using prior storage driver "devicemapper"
WARN[0000] Running modprobe bridge nf_nat failed with message: , error: exit status 1
INFO[0000] Loading containers: start.
............
INFO[0000] Loading containers: done.
INFO[0000] Daemon has completed initialization
INFO[0000] Docker daemon commit=786b29d/1.7.1 execdriver=native-0.2 graphdriver=devicemapper version=1.7.1
INFO[0470] GET /v1.19/containers/json?all=1
INFO[0484] POST /v1.19/containers/cvnavi-centos-jenkins-20170814/start
INFO[0492] POST /v1.19/containers/cvnavi-centos-tomcat-20170814/start
注：很有可能是Linux内核版本过低导致的奇葩问题。
路由问题解决
原因：此路由问题是因为部署设置的tomcat 主机没有设置为Docker tomcat的容器IP。
设置之后部署成功：
Docker容器查看：
注意：我用Oracle VM通过实现的时候直接用的宿主IP 这里在centos直接自己安装的docker，所以出现差异导致找不到主机路由。