SSH Key Injection fails with jenkins/ssh-agent container #1167
Description
Jenkins and plugins versions report
Environment
Jenkins: 2.516.3
OS: Linux - 6.8.0-84-generic
Java: 21.0.8 - Ubuntu (OpenJDK 64-Bit Server VM)
ant:518.v8d8dc7945eca_
antisamy-markup-formatter:173.v680e3a_b_69ff3
apache-httpcomponents-client-4-api:4.5.14-269.vfa_2321039a_83
apache-httpcomponents-client-5-api:5.5-170.v023de017ccd7
asm-api:9.8-163.vb_2a_96d3f9c3c
authentication-tokens:1.144.v5ff4a_5ec5c33
bootstrap5-api:5.3.8-890.v1c5cf4fa_178e
bouncycastle-api:2.30.1.81-264.v95c79c0e772c
branch-api:2.1253.v6e7f7519f710
build-blocker-plugin:166.vc82fc20b_a_ed6
build-timeout:1.38
build-token-root:151.va_e52fe3215fc
caffeine-api:3.2.2-178.v353b_8428ed56
checks-api:373.vfe7645102093
cloud-stats:377.vd8a_6c953e98e
cloudbees-folder:6.1045.vb_ddd55e2d03f
commons-compress-api:1.28.0-1
commons-lang3-api:3.18.0-98.v3a_674c06072d
commons-text-api:1.14.0-194.v804a_dc3a_1b_d8
configuration-as-code:1985.vdda_32d0c4ea_b_
credentials:1447.v4cb_b_539b_5321
credentials-binding:702.vfe613e537e88
dark-theme:574.va_19f05d54df5
display-url-api:2.217.va_6b_de84cc74b_
docker-commons:457.v0f62a_94f11a_3
docker-java-api:3.5.3-122.v156e51f30c0a_
docker-plugin:1274.vc0203fdf2e74
durable-task:605.v9a_b_9040c9970
echarts-api:6.0.0-1146.v5c8f3b_8f0573
eddsa-api:0.3.0.1-19.vc432d923e5ee
email-ext:1925.v1598902b_58dd
font-awesome-api:7.0.1-859.v128d3a_efb_6e5
git:5.7.0
git-client:6.4.0
github:1.45.0
github-api:1.330-492.v3941a_032db_2a_
github-branch-source:1864.v411feec5e78e
gradle:2.16.1149.v711b_998b_0532
gson-api:2.13.2-173.va_a_092315913c
instance-identity:203.v15e81a_1b_7a_38
ionicons-api:94.vcc3065403257
jackson2-api:2.20.0-411.v6ef8fdee4fe9
jakarta-activation-api:2.1.3-2
jakarta-mail-api:2.1.3-3
javax-activation-api:1.2.0-8
javax-mail-api:1.6.2-11
jaxb:2.3.9-133.vb_ec76a_73f706
jjwt-api:0.11.5-120.v0268cf544b_89
job-dsl:1.93
joda-time-api:2.14.0-149.v1c3ce991d1b_9
jquery3-api:3.7.1-594.vb_3864f326cf0
json-api:20250517-173.v596efb_962a_31
json-path-api:2.9.0-190.veefca_05d5477
jsoup:1.21.2-66.v6ea_38164b_8a_2
junit:1355.v45e2ea_65863c
ldap:780.vcb_33c9a_e4332
mailer:522.va_995fa_cfb_8b_d
matrix-auth:3.2.8
matrix-project:858.vb_b_eb_9a_7ea_99e
metrics:4.2.33-484.v2fcd689980d1
mina-sshd-api-common:2.16.0-167.va_269f38cc024
mina-sshd-api-core:2.16.0-167.va_269f38cc024
okhttp-api:4.12.0-195.vc02552c04ffd
pipeline-build-step:571.v08a_fffd4b_0ce
pipeline-github-lib:65.v203688e7727e
pipeline-graph-view:642.v39f37c8e1e70
pipeline-groovy-lib:763.v13008816b_de7
pipeline-input-step:534.v352f0a_e98918
pipeline-milestone-step:138.v78ca_76831a_43
pipeline-model-api:2.2273.v643f36ed9e94
pipeline-model-definition:2.2273.v643f36ed9e94
pipeline-model-extensions:2.2273.v643f36ed9e94
pipeline-stage-step:322.vecffa_99f371c
pipeline-stage-tags-metadata:2.2273.v643f36ed9e94
plain-credentials:199.v9f8e1f741799
plugin-util-api:6.1167.v022176c7e0ca_
prism-api:1.30.0-609.vf0a_df102d9a_f
resource-disposer:0.25
saferestart:102.v4dc1b_9636a_ee
scm-api:709.v6c27075a_b_1c7
script-security:1378.vf25626395f49
snakeyaml-api:2.3-125.v4d77857a_b_402
ssh-credentials:361.vb_f6760818e8c
ssh-slaves:3.1071.v0d059c7b_c555
sshd:3.374.v19b_d59ce6610
structs:353.v261ea_40a_80fb_
theme-manager:319.v9193461f9671
timestamper:1.30
token-macro:477.vd4f0dc3cb_cf1
trilead-api:2.209.v0e69b_c43c245
variant:70.va_d9f17f859e0
workflow-aggregator:608.v67378e9d3db_1
workflow-api:1384.vdc05a_48f535f
workflow-basic-steps:1098.v808b_fd7f8cf4
workflow-cps:4204.v2894b_cd7b_92f
workflow-durable-task-step:1464.v2d3f5c68f84c
workflow-job:1546.v62a_c59c112dd
workflow-multibranch:821.vc3b_4ea_780798
workflow-scm-step:452.vdf1ca_c8d3a_87
workflow-step-api:706.v518c5dcb_24c0
workflow-support:989.va_20a_1a_57710a_
ws-cleanup:0.49
What Operating System are you using (both controller, and any agents involved in the problem)?
Controller: Ubuntu Noble
Agent: Docker image jenkins/ssh-agent:latest
Reproduction steps
- set up docker cloud as normal
- set agent image to
jenkins/ssh-agent:latest - observe jenkins failing to provision agents
Expected Results
Agent connecting and running pipeline
Actual Results
Pipeline stayed stuck waiting for node, cloud stats showed container failed with error:
java.io.IOException: SSH service hadn't started after 60 seconds and 41 milliseconds.
Anything else?
I found below issue in the image's repo, and setting the image to jenkins/ssh-agent:6.11.1 fixed it as described.
Searched for a corresponding issue here as the conclusion there was it was a problem with this plugin not the image, did not find one so created this.
jenkinsci/docker-ssh-agent#513
Are you interested in contributing a fix?
No response