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JCES-273: Add load balancers to Data Center
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7 changes: 4 additions & 3 deletions
7
src/main/kotlin/com/atlassian/performance/tools/infrastructure/api/Infrastructure.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,10 +1,11 @@ | ||
| package com.atlassian.performance.tools.infrastructure.api | ||
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| import com.atlassian.performance.tools.infrastructure.api.jira.install.TcpHost | ||
| import com.atlassian.performance.tools.infrastructure.api.jira.node.JiraNode | ||
| import com.atlassian.performance.tools.infrastructure.api.jira.node.JiraNodePlan | ||
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| interface Infrastructure : AutoCloseable { | ||
| fun serve(jiraNodePlans: List<JiraNodePlan>): List<JiraNode> | ||
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| /** | ||
| * @return can be reached by the caller via [TcpHost.publicIp] and by the rest of the infra via [TcpHost.privateIp] | ||
| */ | ||
| fun serve(port: Int, name: String): TcpHost | ||
| } |
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81 changes: 81 additions & 0 deletions
81
...kotlin/com/atlassian/performance/tools/infrastructure/api/loadbalancer/ApacheProxyPlan.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| package com.atlassian.performance.tools.infrastructure.api.loadbalancer | ||
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| import com.atlassian.performance.tools.infrastructure.api.Infrastructure | ||
| import com.atlassian.performance.tools.infrastructure.api.Sed | ||
| import com.atlassian.performance.tools.infrastructure.api.jira.install.InstalledJira | ||
| import com.atlassian.performance.tools.infrastructure.api.jira.node.JiraNode | ||
| import com.atlassian.performance.tools.infrastructure.api.jira.report.Reports | ||
| import com.atlassian.performance.tools.infrastructure.api.jira.start.hook.PreStartHook | ||
| import com.atlassian.performance.tools.infrastructure.api.jira.start.hook.PreStartHooks | ||
| import com.atlassian.performance.tools.infrastructure.api.os.Ubuntu | ||
| import com.atlassian.performance.tools.jvmtasks.api.ExponentialBackoff | ||
| import com.atlassian.performance.tools.jvmtasks.api.IdempotentAction | ||
| import com.atlassian.performance.tools.ssh.api.SshConnection | ||
| import java.net.URI | ||
| import java.time.Duration | ||
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| class ApacheProxyPlan( | ||
| private val httpPort: Int, | ||
| private val infrastructure: Infrastructure | ||
| ) : LoadBalancerPlan { | ||
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| private val configPath = "/etc/apache2/sites-enabled/000-default.conf" | ||
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| override fun materialize(nodes: List<JiraNode>): LoadBalancer { | ||
| val proxyNode = infrastructure.serve(httpPort, "apache-proxy") | ||
| IdempotentAction("Installing and configuring apache load balancer") { | ||
| proxyNode.ssh.newConnection().use { connection -> | ||
| tryToProvision(connection, nodes) | ||
| } | ||
| }.retry(2, ExponentialBackoff(Duration.ofSeconds(5))) | ||
| val balancerEndpoint = URI("http://${proxyNode.privateIp}:$httpPort/") | ||
| nodes.forEach { it.plan.hooks.preStart.insert(InjectProxy(balancerEndpoint)) } | ||
| return ApacheProxy(balancerEndpoint) | ||
| } | ||
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| private fun tryToProvision(ssh: SshConnection, nodes: List<JiraNode>) { | ||
| Ubuntu().install(ssh, listOf("apache2")) | ||
| ssh.execute("sudo rm $configPath") | ||
| ssh.execute("sudo touch $configPath") | ||
| val mods = listOf( | ||
| "proxy", "proxy_ajp", "proxy_http", "rewrite", "deflate", "headers", "proxy_balancer", "proxy_connect", | ||
| "proxy_html", "xml2enc", "lbmethod_byrequests" | ||
| ) | ||
| ssh.execute("sudo a2enmod ${mods.joinToString(" ")}") | ||
| appendConfig( | ||
| ssh, | ||
| "Header add Set-Cookie \\\"ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/\\\" env=BALANCER_ROUTE_CHANGED" | ||
| ) | ||
| appendConfig(ssh, "<Proxy balancer://mycluster>") | ||
| nodes.forEachIndexed { index, node -> | ||
| appendConfig(ssh, "\tBalancerMember http://${node.host.publicIp}:${node.host.port} route=$index") | ||
| } | ||
| appendConfig(ssh, "</Proxy>\n") | ||
| appendConfig(ssh, "ProxyPass / balancer://mycluster/ stickysession=ROUTEID") | ||
| appendConfig(ssh, "ProxyPassReverse / balancer://mycluster/ stickysession=ROUTEID") | ||
| ssh.execute("sudo service apache2 restart", Duration.ofMinutes(3)) | ||
| } | ||
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| private fun appendConfig(connection: SshConnection, line: String) { | ||
| connection.execute("echo \"$line\" | sudo tee -a $configPath") | ||
| } | ||
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| private class ApacheProxy( | ||
| override val uri: URI | ||
| ) : LoadBalancer { | ||
| override fun waitUntilHealthy(timeout: Duration) {} | ||
| } | ||
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| private class InjectProxy( | ||
| private val proxy: URI | ||
| ) : PreStartHook { | ||
| override fun call(ssh: SshConnection, jira: InstalledJira, hooks: PreStartHooks, reports: Reports) { | ||
| Sed().replace( | ||
| ssh, | ||
| "bindOnInit=\"false\"", | ||
| "bindOnInit=\"false\" scheme=\"http\" proxyName=\"${proxy.host}\" proxyPort=\"${proxy.port}\"", | ||
| "${jira.installation.path}/conf/server.xml" | ||
| ) | ||
| } | ||
| } | ||
| } |
7 changes: 7 additions & 0 deletions
7
...otlin/com/atlassian/performance/tools/infrastructure/api/loadbalancer/LoadBalancerPlan.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| package com.atlassian.performance.tools.infrastructure.api.loadbalancer | ||
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| import com.atlassian.performance.tools.infrastructure.api.jira.node.JiraNode | ||
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| interface LoadBalancerPlan { | ||
| fun materialize(nodes: List<JiraNode>): LoadBalancer | ||
| } |
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