What Operating System are you using (both controller, and any agents involved in the problem)?
Ubuntu 18.04.2 LTS
Reproduction steps
After updating Jenkins from 2.361.4 to version 2.387.3 AND Publish Over SSH plugin from 1.22 to 1.24
My ssh connexions to servers that have ubuntu 14.04.6 LTS OS stopped working
Expected Results
Connexion Success
Actual Results
jenkins.plugins.publish_over.BapPublisherException: Failed to connect and initialize SSH connection. Message: [Failed to connect session for config [My Server]. Message [Auth fail for methods 'publickey,password']]
/var/log/auth.log :
May 17 01:18:11 sshd[5951]: userauth_pubkey: unsupported public key algorithm: rsa-sha2-512 [preauth]
May 17 01:18:11 sshd[5951]: userauth_pubkey: unsupported public key algorithm: rsa-sha2-256 [preauth]
May 17 01:18:11 sshd[5951]: error: Received disconnect from [private_IP]: 3: com.jcraft.jsch.JSchException: Auth fail for methods 'publickey,password' [preauth]
Anything else?
using the same key, i can connect from the server that hosts Jenkins getting this logs :
/var/log/auth.log :
May 17 01:22:19 sshd[9871]: Accepted publickey for [user] from [IP] port [port] ssh2: RSA ...
May 17 01:22:19 sshd[9871]: pam_unix(sshd:session): session opened for user [user] by (uid=0)
Jenkins and plugins versions report
Environment
```Jenkins: 2.387.3 OS: Linux - 4.15.0-55-generic Java: 11.0.4 - Ubuntu (OpenJDK 64-Bit Server VM) --- Office-365-Connector:4.18.0 ace-editor:1.1 ansible:204.v8191fd551eb_f ansicolor:1.0.2 ant:487.vd79d090d4ea_e antisamy-markup-formatter:159.v25b_c67cd35fb_ apache-httpcomponents-client-4-api:4.5.14-150.v7a_b_9d17134a_5 atlassian-jira-software-cloud:2.0.7 audit-trail:333.vb_e1b_b_0f1238c authentication-tokens:1.53.v1c90fd9191a_b_ authorize-project:1.6.0 aws-credentials:191.vcb_f183ce58b_9 aws-java-sdk-ec2:1.12.447-382.vda_68e2007233 aws-java-sdk-minimal:1.12.447-382.vda_68e2007233 bootstrap4-api:4.6.0-5 bootstrap5-api:5.2.2-3 bouncycastle-api:2.27 branch-api:2.1071.v1a_188a_562481 build-timeout:1.30 caffeine-api:3.1.6-115.vb_8b_b_328e59d8 checks-api:2.0.0 cloudbees-folder:6.815.v0dd5a_cb_40e0e command-launcher:100.v2f6722292ee8 commons-httpclient3-api:3.1-3 commons-lang3-api:3.12.0-36.vd97de6465d5b_ commons-text-api:1.10.0-36.vc008c8fcda_7b_ conditional-buildstep:1.4.2 credentials:1254.vb_96f366e7b_a_d credentials-binding:604.vb_64480b_c56ca_ data-tables-api:1.13.3-3 dependency-check-jenkins-plugin:5.4.0 display-url-api:2.3.7 docker-commons:419.v8e3cd84ef49c docker-workflow:563.vd5d2e5c4007f durable-task:506.v1b_3e14b_6f5da_ echarts-api:5.4.0-3 email-ext:2.96 font-awesome-api:6.3.0-2 git:5.0.2 git-client:4.2.0 git-server:99.va_0826a_b_cdfa_d github:1.37.0 github-api:1.314-431.v78d72a_3fe4c3 github-branch-source:1703.vd5a_2b_29c6cdc gradle:2.7 handlebars:3.0.8 http_request:1.16 instance-identity:142.v04572ca_5b_265 ionicons-api:45.vf54fca_5d2154 jackson2-api:2.15.0-334.v317a_165f9b_7c jacoco:3.3.3 jakarta-activation-api:2.0.1-3 jakarta-mail-api:2.0.1-3 javadoc:233.vdc1a_ec702cff javax-activation-api:1.2.0-6 javax-mail-api:1.6.2-9 jaxb:2.3.8-1 jdk-tool:66.vd8fa_64ee91b_d jjwt-api:0.11.5-77.v646c772fddb_0 jnr-posix-api:3.1.16-2 jquery-detached:1.2.1 jquery3-api:3.6.4-1 jsch:0.2.8-65.v052c39de79b_2 junit:1202.v79a_986785076 ldap:673.v034ec70ec2b_b_ locale:262.ved03281fa_64f lockable-resources:1156.v5e9f897ece02 mailer:448.v5b_97805e3767 mapdb-api:1.0.9-28.vf251ce40855d matrix-auth:3.1.7 matrix-project:789.v57a_725b_63c79 maven-plugin:3.22 mina-sshd-api-common:2.10.0-69.v28e3e36d18eb_ mina-sshd-api-core:2.10.0-69.v28e3e36d18eb_ momentjs:1.1.1 naginator:1.18.2 nexus-artifact-uploader:2.14 okhttp-api:4.10.0-132.v7a_7b_91cef39c pam-auth:1.10 parameterized-trigger:2.45 periodicbackup:2.0 pipeline-build-step:491.v1fec530da_858 pipeline-github-lib:42.v0739460cda_c4 pipeline-graph-analysis:202.va_d268e64deb_3 pipeline-groovy-lib:656.va_a_ceeb_6ffb_f7 pipeline-input-step:468.va_5db_051498a_4 pipeline-milestone-step:111.v449306f708b_7 pipeline-model-api:2.2131.vb_9788088fdb_5 pipeline-model-definition:2.2131.vb_9788088fdb_5 pipeline-model-extensions:2.2131.vb_9788088fdb_5 pipeline-rest-api:2.32 pipeline-stage-step:305.ve96d0205c1c6 pipeline-stage-tags-metadata:2.2131.vb_9788088fdb_5 pipeline-stage-view:2.32 plain-credentials:143.v1b_df8b_d3b_e48 plugin-util-api:3.2.1 popper-api:1.16.1-3 popper2-api:2.11.6-2 publish-over:0.22 publish-over-ssh:1.24 resource-disposer:0.22 run-condition:1.5 scm-api:667.v8b_6e07cdc7f2 script-security:1244.ve463715a_f89c snakeyaml-api:1.33-95.va_b_a_e3e47b_fa_4 sonar:2.15 ssh-credentials:305.v8f4381501156 sshd:3.275.v9e17c10f2571 structs:324.va_f5d6774f3a_d text-finder:1.24 thinBackup:1.17 timestamper:1.25 token-macro:359.vb_cde11682e0c trilead-api:2.84.v72119de229b_7 variant:59.vf075fe829ccb workflow-aggregator:596.v8c21c963d92d workflow-api:1213.v646def1087f9 workflow-basic-steps:1017.vb_45b_302f0cea_ workflow-cps:3659.v582dc37621d8 workflow-cps-global-lib:609.vd95673f149b_b workflow-durable-task-step:1246.v5524618ea_097 workflow-job:1292.v27d8cc3e2602 workflow-multibranch:746.v05814d19c001 workflow-scm-step:408.v7d5b_135a_b_d49 workflow-step-api:639.v6eca_cd8c04a_a_ workflow-support:839.v35e2736cfd5c ws-cleanup:0.45 ```What Operating System are you using (both controller, and any agents involved in the problem)?
Ubuntu 18.04.2 LTS
Reproduction steps
After updating Jenkins from 2.361.4 to version 2.387.3 AND Publish Over SSH plugin from 1.22 to 1.24 My ssh connexions to servers that have ubuntu 14.04.6 LTS OS stopped working
Expected Results
Connexion Success
Actual Results
jenkins.plugins.publish_over.BapPublisherException: Failed to connect and initialize SSH connection. Message: [Failed to connect session for config [My Server]. Message [Auth fail for methods 'publickey,password']]
/var/log/auth.log :
May 17 01:18:11 sshd[5951]: userauth_pubkey: unsupported public key algorithm: rsa-sha2-512 [preauth] May 17 01:18:11 sshd[5951]: userauth_pubkey: unsupported public key algorithm: rsa-sha2-256 [preauth] May 17 01:18:11 sshd[5951]: error: Received disconnect from [private_IP]: 3: com.jcraft.jsch.JSchException: Auth fail for methods 'publickey,password' [preauth]
Anything else?
using the same key, i can connect from the server that hosts Jenkins getting this logs :
/var/log/auth.log : May 17 01:22:19 sshd[9871]: Accepted publickey for [user] from [IP] port [port] ssh2: RSA ... May 17 01:22:19 sshd[9871]: pam_unix(sshd:session): session opened for user [user] by (uid=0)