java.lang.NoSuchMethodError: No such DSL method 'sshagent' found among steps [archive, bat, build, catchError Jenkins

Question

I use Jenkins CI/CD and do the building for the script below

def secret = 'server'
def server = 'jenkins@103.171.85.155'
def directory = 'wayshub-frontend'
def branch = 'master'

pipeline{
        agent any
    stages{
            stage ('compose down and pull'){
            steps{
                sshagent([secret]) {
                    sh '''
                    ssh -o StrictHostkeyChecking=no ${server} << EOF
                    cd ${directory}
                    docker-compose down
                    docker system prune -f
                    git pull origin ${branch}
                    exit
                    EOF
                    '''
                }
            }
        }
    stage ('build images'){
            steps{
                sshagent([secret]) {
                    sh '''
                    ssh -o StrictHostkeyChecking=no ${server} << EOF
                    cd ${directory}
                    docker-compose build
                    exit
                    EOF
                    '''
                 }
             }
        }
        stage ('deploy'){
            steps{
                sshagent([secret]) {
                    sh '''
                    ssh -o StrictHostkeyChecking=no ${server} << EOF
                    cd ${directory}
                    docker-compose up -d
                    exit
                    EOF
            '''
                }
            }
        }
    }
}

i got error during build

Error build

java.lang.NoSuchMethodError: No such DSL method 'sshagent' found among steps [archive, bat, build, catchError, checkout, deleteDir, dir, dockerFingerprintFrom, dockerFingerprintRun, echo, emailext, emailextrecipients, envVarsForTool, error, fileExists, findBuildScans, getContext, git, input, isUnix, junit, library, libraryResource, load, mail, milestone, node, parallel, powershell, properties, publishChecks, publishHTML, pwd, pwsh, readFile, readTrusted, resolveScm, retry, script, sh, sleep, stage, stash, step, timeout, timestamps, tm, tool, unarchive, unstable, unstash, validateDeclarativePipeline, waitUntil, warnError, withChecks, withContext, withCredentials, withDockerContainer, withDockerRegistry, withDockerServer, withEnv, withGradle, wrap, writeFile, ws] or symbols [GitUsernamePassword, all, allBranchesSame, allOf, always, ant, antFromApache, antOutcome, antTarget, any, anyOf, apiToken, architecture, archiveArtifacts, artifactManager, a uthorizationMatrix, batchFile, bitbucketServer, booleanParam, branch, brokenBuildSuspects, brokenTestsSuspects, buildButton, buildDiscarder, buildDiscarders, buildRetention, buildUser, buildingTag, builtInNode, caseInsensitive, caseSensitive, certificate, changeRequest, changelog, changeset, checkoutToSubdirectory, choice, choiceParam, cleanWs, clock, command, contributor, credentials, cron, crumb, culprits, defaultFolderConfiguration, defaultView, demand, developers, disableConcurrentBuilds, disableResume, docker, dockerCert, dockerServer, dockerTool, dockerfile, downstream, dumb, durabilityHint, email-ext, envVars, envVarsFilter, environment, equals, expression, extendedEmailPublisher, file, fileParam, filePath, fingerprint, fingerprints, frameOptions, freeStyle, freeStyleJob, fromDocker, fromScm, fromSource, git, gitBranchDiscovery, gitHubBranchDiscovery, gitHubBranchHeadAuthority, gitHubExcludeArchivedRepositories, gitHubExcludeForkedRepositories, gitHubExclud ePrivateRepositories, gitHubExcludePublicRepositories, gitHubForkDiscovery, gitHubIgnoreDraftPullRequestFilter, gitHubPullRequestDiscovery, gitHubSshCheckout, gitHubTagDiscovery, gitHubTopicsFilter, gitHubTrustContributors, gitHubTrustEveryone, gitHubTrustNobody, gitHubTrustPermissions, gitTagDiscovery, gitUsernamePassword, github, githubProjectProperty, githubPush, gradle, headRegexFilter, headWildcardFilter, hyperlink, hyperlinkToModels, inheriting, inheritingGlobal, installSource, isRestartedRun, jdk, jdkInstaller, jgit, jgitapache, jnlp, jobBuildDiscarder, jobName, junitTestResultStorage, label, lastDuration, lastFailure, lastGrantedAuthorities, lastStable, lastSuccess, legacy, legacySCM, list, local, location, logRotator, loggedInUsersCanDoAnything, mailer, masterBuild, maven, maven3Mojos, mavenErrors, mavenGlobalConfig, mavenMojos, mavenWarnings, modernSCM, myView, namedBranchesDifferent, newContainerPerStage, node, nodeProperties, nonInheriting, n one, not, organizationFolder, overrideIndexTriggers, paneStatus, parallelsAlwaysFailFast, parameters, password, pattern, permanent, pipeline, pipeline-model, pipeline-model-docker, pipelineTriggers, plainText, plugin, pollSCM, preserveStashes, projectNamingStrategy, proxy, pruneTags, queueItemAuthenticator, quietPeriod, rateLimit, rateLimitBuilds, recipients, requestor, resourceRoot, retainOnlyVariables, run, runParam, sSHLauncher, schedule, scmRetryCount, scriptApproval, scriptApprovalLink, search, security, shell, simpleBuildDiscarder, skipDefaultCheckout, skipStagesAfterUnstable, slave, sourceRegexFilter, sourceWildcardFilter, ssh, sshPublicKey, sshUserPrivateKey, standard, status, string, stringParam, suppressAutomaticTriggering, suppressFolderAutomaticTriggering, swapSpace, tag, teamSlugFilter, text, textParam, timestamper, timestamperConfig, timezone, tmpSpace, toolLocation, triggeredBy, unsecured, untrusted, upstream, upstreamDevelopers, userSeed, usernameCol onPassword, usernamePassword, viewsTabBar, weather, withAnt, x509ClientCert, zip] or globals [currentBuild, docker, env, params, pipeline, scm] at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:219)

Github repository: https://github.com/pinoezz/Jenkins-Frontend

Guess what's wrong please help

Answer 1

It seems you have not installed the sshagent plugin. Here is the documentation for the plugin. Go to manage Jenkins and make sure it's installed.