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  1. Infrastructure
  2. INFRA-2903

infra.ci.jenkins.io: HTTP/504 errors while logging with LDAP

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    • Similar Issues:

      Description

      We are currently facing issues with infra.ci.jenkins.io instance with "HTTP/504 gateway timeout" errors while logging in.

      What we were able to verify so far:

      • The issue happen when a user tries to login. Jenkins tries to contact the LDAP to verify the identity and after 1min it answers an HTTP/504. The logs are reporting a read timeout while contacting the LDAP server:
      2021-02-24 11:31:35.191+0000 [id=15629] WARNING h.security.LDAPSecurityRealm#throwUnlessConfigIsIgnorable: Failed communication with ldap server <REDACTED> (ldaps://<REDACTED>:636), will _not_ try the next configuration
      javax.naming.NamingException: LDAP response read timed out, timeout used: 60000 ms.
              at java.naming/com.sun.jndi.ldap.LdapRequest.getReplyBer(LdapRequest.java:129)
              at java.naming/com.sun.jndi.ldap.Connection.readReply(Connection.java:434)
              at java.naming/com.sun.jndi.ldap.LdapClient.getSearchReply(LdapClient.java:639)
              at java.naming/com.sun.jndi.ldap.LdapClient.getSearchReply(LdapClient.java:607)
              at java.naming/com.sun.jndi.ldap.LdapCtx.getSearchReply(LdapCtx.java:1947)
              at java.naming/com.sun.jndi.ldap.AbstractLdapNamingEnumeration.getNextBatch(AbstractLdapNamingEnumeration.java:130)
              at java.naming/com.sun.jndi.ldap.AbstractLdapNamingEnumeration.hasMoreImpl(AbstractLdapNamingEnumeration.java:217)
              at java.naming/com.sun.jndi.ldap.AbstractLdapNamingEnumeration.hasMore(AbstractLdapNamingEnumeration.java:189)
              at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:365)
      Caused: org.springframework.ldap.UncategorizedLdapException: Uncategorized exception occured during LDAP processing; nested exception is javax.naming.NamingException: LDAP response read timed out, timeout used: 60000 ms.
              at org.springframework.ldap.support.LdapUtils.convertLdapException(LdapUtils.java:228)
              at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:397)
              at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:328)
              at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:629)
              at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:570)
              at org.springframework.security.ldap.SpringSecurityLdapTemplate.searchForMultipleAttributeValues(SpringSecurityLdapTemplate.java:197)
              at org.springframework.security.ldap.userdetails.DefaultLdapAuthoritiesPopulator.getGroupMembershipRoles(DefaultLdapAuthoritiesPopulator.java:223)
              at hudson.security.LDAPSecurityRealm$AuthoritiesPopulatorImpl.getGroupMembershipRoles(LDAPSecurityRealm.java:1422)
              at org.springframework.security.ldap.userdetails.DefaultLdapAuthoritiesPopulator.getGrantedAuthorities(DefaultLdapAuthoritiesPopulator.java:203)
              at jenkins.security.plugins.ldap.FromGroupSearchLDAPGroupMembershipStrategy.getGrantedAuthorities(FromGroupSearchLDAPGroupMembershipStrategy.java:80)
              at hudson.security.LDAPSecurityRealm$LDAPUserDetailsService.loadUserByUsername(LDAPSecurityRealm.java:1306)
      Caused: org.springframework.security.authentication.AuthenticationServiceException: Failed to search LDAP for <REDACTED>
              at hudson.security.LDAPSecurityRealm$LDAPUserDetailsService.loadUserByUsername(LDAPSecurityRealm.java:1343)
              at hudson.security.LDAPSecurityRealm$DelegateLDAPUserDetailsService.loadUserByUsername(LDAPSecurityRealm.java:1227)
      Caused: hudson.security.UserMayOrMayNotExistException2
              at hudson.security.LDAPSecurityRealm$DelegateLDAPUserDetailsService.loadUserByUsername(LDAPSecurityRealm.java:1234)
              at jenkins.security.ImpersonatingUserDetailsService2.loadUserByUsername(ImpersonatingUserDetailsService2.java:29)
              at org.springframework.security.web.authentication.rememberme.TokenBasedRememberMeServices.processAutoLoginCookie(TokenBasedRememberMeServices.java:104)
              at hudson.security.TokenBasedRememberMeServices2.processAutoLoginCookie(TokenBasedRememberMeServices2.java:166)
              at org.springframework.security.web.authentication.rememberme.AbstractRememberMeServices.autoLogin(AbstractRememberMeServices.java:133)
              at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:104)
              at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:92)
              at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
              at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:218)
              at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:212)
              at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
              at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
              at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
              at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:110)
              at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80)
              at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:62)
              at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
              at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:109)
              at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:168)
              at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
              at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
              at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:51)
              at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
              at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
              at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
              at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
              at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
              at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
              at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
              at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
              at jenkins.security.SuspiciousRequestFilter.doFilter(SuspiciousRequestFilter.java:36)
              at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
              at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
              at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
              at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
              at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578)
              at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
              at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
              at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
              at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
              at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
              at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
              at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
              at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
              at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
              at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
              at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
              at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
              at org.eclipse.jetty.server.Server.handle(Server.java:516)
              at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
              at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
              at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
              at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
              at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
              at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
              at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
              at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
              at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
              at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
              at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
              at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
              at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:773)
              at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:905)
              at java.base/java.lang.Thread.run(Thread.java:834)
      
      • All the jobs continue to be built without any error (incoming webhooks included)
      • When the error appears, all login attempts are failing in the next minutes. After ~15 min everything come back as normal and we can login again.
      • During this 15 min of “errors”:
        • LDAP connection are working quite well in the Jenkins’s container using either curl of ldapseach CLIs. Example of a curl request from the jenkins container, executed while HTTP/504 are happening:
      time curl --fail --verbose ldaps://ldap.jenkins.io
      * Expire in 0 ms for 6 (transfer 0x55f0aa504f90)
      * Expire in 1 ms for 1 (transfer 0x55f0aa504f90)
      // ...
      * Expire in 4 ms for 1 (transfer 0x55f0aa504f90)
      * Expire in 6 ms for 1 (transfer 0x55f0aa504f90)
      *   Trying 52.184.219.77...
      * TCP_NODELAY set
      * Expire in 200 ms for 4 (transfer 0x55f0aa504f90)
      * Connected to ldap.jenkins.io (52.184.219.77) port 636 (#0)
      * successfully set certificate verify locations:
      *   CAfile: none
        CApath: /etc/ssl/certs
      * TLSv1.3 (OUT), TLS handshake, Client hello (1):
      * TLSv1.3 (IN), TLS handshake, Server hello (2):
      * TLSv1.2 (IN), TLS handshake, Certificate (11):
      * TLSv1.2 (IN), TLS handshake, Server key exchange (12):
      * TLSv1.2 (IN), TLS handshake, Server finished (14):
      * TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
      * TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
      * TLSv1.2 (OUT), TLS handshake, Finished (20):
      * TLSv1.2 (IN), TLS handshake, Finished (20):
      * SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
      * Server certificate:
      *  subject: CN=ldap.jenkins.io
      *  start date: Jan 28 11:49:55 2021 GMT
      *  expire date: Apr 28 11:49:55 2021 GMT
      *  subjectAltName: host "ldap.jenkins.io" matched cert's "ldap.jenkins.io"
      *  issuer: C=US; O=Let's Encrypt; CN=R3
      *  SSL certificate verify ok.
      * LDAP local: ldaps://ldap.jenkins.io
      DN: 
              objectClass: top
              objectClass: OpenLDAProotDSE
      
      
      * Connection #0 to host ldap.jenkins.io left intact
      
      real    0m0.046s
      user    0m0.024s
      sys     0m0.008s
      
        • No other services (either in the same cluster, or somewhere else) are impacted at all with LDAP timeout
        • Ldap server does not have any error log and using tcpdump, the requests from Jenkins are not seen (while my curl are)
      • We tried to fine-tune the LDAP JNDI pooling https://github.com/jenkins-infra/charts/pull/888 by decreasing the read/write timeout and disabling connection pooling. The timeout are now happening earlier, and the “15 min error period” is now closer to 5 min, which make it easier to ignore, but still problematic.
      • The instance release.jenkins.io is the instance which is the closest in term of setup: same kubernetes cluster, same LDAP setting, same network road, and does not have the issue.
        • BUT release uses the Jenkins LTS (2.263.4) which has the LDAP plugin in version 1.26 (https://plugins.jenkins.io/ldap/#releases) which is a version WITHOUT the new spring security effort. While the “infra.ci” instance in error is using the weekly core (2.281 as for now) which has the LDAP plugin in version 2.3. We tried with the latest 2.4 version of the plugin and the behavior is still the same.

      Next steps are about checking the metrics from the JVM (GC, connections pools, threads, etc.) to see if we can find a correlation.
       

        Attachments

          Activity

          Hide
          dduportal Damien Duportal added a comment -

          I see that ci.jenkins.io has a setup with more attributes (in the JCasc export) defined than what we set up in https://github.com/jenkins-infra/charts/blob/master/config/default/jenkins-infra.yaml#L400 for infra.ci.

          The main differences are the following:

          • On the only element of the array `configurations`:
            • `groupSearchBase` is set to `ou=groups`
            • `inhibitInferRootDN` is set to `false`
            • `mailAddressAttributeName` is set to `email`
          • For the general `ldap` keys:
            • `disableMailAddressResolver` is set to false
            • `groupIdStrategy` is set to `caseInsensitive`
            • `userIdStrategy` is set to `caseInsensitive`

          Olivier Vernin shared with me an LDAP query, run with the CLI `ldapsearch` that reproduces what we saw on the log: this request answers ~100 entries, which makes us think there is something wrong there...

          Show
          dduportal Damien Duportal added a comment - I see that ci.jenkins.io has a setup with more attributes (in the JCasc export) defined than what we set up in https://github.com/jenkins-infra/charts/blob/master/config/default/jenkins-infra.yaml#L400 for infra.ci. The main differences are the following: On the only element of the array `configurations`: `groupSearchBase` is set to `ou=groups` `inhibitInferRootDN` is set to `false` `mailAddressAttributeName` is set to `email` For the general `ldap` keys: `disableMailAddressResolver` is set to false `groupIdStrategy` is set to `caseInsensitive` `userIdStrategy` is set to `caseInsensitive` Olivier Vernin shared with me an LDAP query, run with the CLI `ldapsearch` that reproduces what we saw on the log: this request answers ~100 entries, which makes us think there is something wrong there...
          Hide
          dduportal Damien Duportal added a comment -

          Today's worklog:

          • After a lot of shenanigans, I was able to find a working configuration (at least without the infamous error 500 when I log-in). See the git diff below.
          diff --git a/config/default/jenkins-infra.yaml b/config/default/jenkins-infra.yaml
          index 000ce43..a7e6c83 100644
          --- a/config/default/jenkins-infra.yaml
          +++ b/config/default/jenkins-infra.yaml
          @@ -9,6 +9,7 @@ jenkins:
                 namespaceLabels:
                   name: "jenkins-infra"
             controller:
          +    tag: "2.283"
               resources:
                 limits:
                   cpu: "2"
          @@ -16,7 +17,11 @@ jenkins:
                 requests:
                   cpu: "2"
                   memory: "4Gi"
          -    javaOpts: "-XshowSettings:vm -XX:+AlwaysPreTouch -XX:+UseStringDeduplication -XX:+ParallelRefProcEnabled -XX:+DisableExplicitGC -XX:MaxRAM=4g"
          +    javaOpts: >
          +      -XshowSettings:vm -XX:+UseStringDeduplication -XX:+ParallelRefProcEnabled -XX:+DisableExplicitGC -XX:MaxRAM=4g -XX:+AlwaysPreTouch -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/jenkins_home/logs/
          +      -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -verbose:gc -Xloggc:/var/jenkins_home/logs/gc.log -XX:NumberOfGCLogFiles=2 -XX:+UseGCLogFileRotation -XX:GCLogFileSize=100m
          +      -XX:+PrintGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintHeapAtGC -XX:+PrintGCCause -XX:+PrintTenuringDistribution -XX:+PrintReferenceGC -XX:+PrintAdaptiveSizePolicy
          +      -XX:ErrorFile=/var/jenkins_home/logs/hs_err_%p.log -XX:+LogVMOutput -XX:LogFile=jvm.log
               JCasC:
                 enabled: true
                 defaultConfig: false
          @@ -406,14 +411,13 @@ jenkins:
                               rootDN: "${LDAP_ROOT_DN}"
                               managerDN: "${LDAP_MANAGER_DN}"
                               managerPasswordSecret: "${LDAP_MANAGER_PASSWORD}"
          +                    mailAddressAttributeName: "mail"
                               userSearch: cn={0}
          -                    environmentProperties:
          -                      - name: "com.sun.jndi.ldap.connect.timeout"
          -                        value: "20000"
          -                      - name: "com.sun.jndi.ldap.read.timeout"
          -                        value: "20000"
          -                      - name: "com.sun.jndi.ldap.connect.pool"
          -                        value: "false"
          +                    userSearchBase: "ou=people"
          +                    groupSearchBase: "ou=groups"
          +                disableMailAddressResolver: false
          +                groupIdStrategy: "caseInsensitive"
          +                userIdStrategy: "caseInsensitive"
                           cache:
                             size: 100
                             ttl: 300
          @@ -453,11 +457,11 @@ jenkins:
                         globalMatrix:
                           permissions:
                             - "Overall/Administer:admins"
          -                  - "Overall/SystemRead:all"
          -                  - "Overall/Read:all"
          -                  - "Job/Read:all"
          -                  - "Job/Build:all"
          -                  - "Job/ExtendedRead:all"
          +# - "Overall/SystemRead:all"
          +# - "Overall/Read:all"
          +# - "Job/Read:all"
          +# - "Job/Build:all"
          +# - "Job/ExtendedRead:all"
                   system-settings: |
                     jenkins:
                       disabledAdministrativeMonitors:
          
          • Next steps: by changing one of these 4 elements at a time, I'll try to find which one is the culprit
          Show
          dduportal Damien Duportal added a comment - Today's worklog: After a lot of shenanigans, I was able to find a working configuration (at least without the infamous error 500 when I log-in). See the git diff below. Using the JDK8 image Setting a bunch of JDK8 JVM flags, following https://support.cloudbees.com/hc/en-us/articles/222446987#ajavaparameters (goal was to provide observability of the GC logs/heap dumps) Apply the same LDAP settings as ci.j.io Only reference the group `admin` in the RBAC setup to ensure that no LDAP request with `all` is emitted diff --git a/config/ default /jenkins-infra.yaml b/config/ default /jenkins-infra.yaml index 000ce43..a7e6c83 100644 --- a/config/ default /jenkins-infra.yaml +++ b/config/ default /jenkins-infra.yaml @@ -9,6 +9,7 @@ jenkins: namespaceLabels: name: "jenkins-infra" controller: + tag: "2.283" resources: limits: cpu: "2" @@ -16,7 +17,11 @@ jenkins: requests: cpu: "2" memory: "4Gi" - javaOpts: "-XshowSettings:vm -XX:+AlwaysPreTouch -XX:+UseStringDeduplication -XX:+ParallelRefProcEnabled -XX:+DisableExplicitGC -XX:MaxRAM=4g" + javaOpts: > + -XshowSettings:vm -XX:+UseStringDeduplication -XX:+ParallelRefProcEnabled -XX:+DisableExplicitGC -XX:MaxRAM=4g -XX:+AlwaysPreTouch -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/ var /jenkins_home/logs/ + -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -verbose:gc -Xloggc:/ var /jenkins_home/logs/gc.log -XX:NumberOfGCLogFiles=2 -XX:+UseGCLogFileRotation -XX:GCLogFileSize=100m + -XX:+PrintGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintHeapAtGC -XX:+PrintGCCause -XX:+PrintTenuringDistribution -XX:+PrintReferenceGC -XX:+PrintAdaptiveSizePolicy + -XX:ErrorFile=/ var /jenkins_home/logs/hs_err_%p.log -XX:+LogVMOutput -XX:LogFile=jvm.log JCasC: enabled: true defaultConfig: false @@ -406,14 +411,13 @@ jenkins: rootDN: "${LDAP_ROOT_DN}" managerDN: "${LDAP_MANAGER_DN}" managerPasswordSecret: "${LDAP_MANAGER_PASSWORD}" + mailAddressAttributeName: "mail" userSearch: cn={0} - environmentProperties: - - name: "com.sun.jndi.ldap.connect.timeout" - value: "20000" - - name: "com.sun.jndi.ldap.read.timeout" - value: "20000" - - name: "com.sun.jndi.ldap.connect.pool" - value: " false " + userSearchBase: "ou=people" + groupSearchBase: "ou=groups" + disableMailAddressResolver: false + groupIdStrategy: "caseInsensitive" + userIdStrategy: "caseInsensitive" cache: size: 100 ttl: 300 @@ -453,11 +457,11 @@ jenkins: globalMatrix: permissions: - "Overall/Administer:admins" - - "Overall/SystemRead:all" - - "Overall/Read:all" - - "Job/Read:all" - - "Job/Build:all" - - "Job/ExtendedRead:all" +# - "Overall/SystemRead:all" +# - "Overall/Read:all" +# - "Job/Read:all" +# - "Job/Build:all" +# - "Job/ExtendedRead:all" system-settings: | jenkins: disabledAdministrativeMonitors: Next steps: by changing one of these 4 elements at a time, I'll try to find which one is the culprit
          Hide
          danielbeck Daniel Beck added a comment -

          "all" seems such a weird entry. Why not use "authenticated" which is basically defined in Jenkins?

          Show
          danielbeck Daniel Beck added a comment - "all" seems such a weird entry. Why not use "authenticated" which is basically defined in Jenkins?
          Show
          dduportal Damien Duportal added a comment - Fix PR: https://github.com/jenkins-infra/charts/pull/968
          Hide
          dduportal Damien Duportal added a comment -
          Show
          dduportal Damien Duportal added a comment - Cherry pick to release.ci: https://github.com/jenkins-infra/charts/pull/972

            People

            Assignee:
            dduportal Damien Duportal
            Reporter:
            dduportal Damien Duportal
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              Dates

              Created:
              Updated:
              Resolved: