# Upgrade issue on linux like os (kali, proxmox) **URL:** \ **Category:** Elastic Agent\ **Created:** [May 8, 2024, 2:02pm UTC](https://discuss.elastic.co/t/upgrade-issue-on-linux-like-os-kali-proxmox/359074 "2024-05-08T14:02:32Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![GKre](https://avatars.discourse-cdn.com/v4/letter/g/ecae2f/32.png) [@GKre](https://discuss.elastic.co/u/GKre)\ **Post date:** [May 8, 2024, 2:02pm UTC](https://discuss.elastic.co/t/upgrade-issue-on-linux-like-os-kali-proxmox/359074/1 "2024-05-08T14:02:32Z")
i am currently updating my agents to 8.13.1 via fleet. The upgrade is failing on linux machines while my windows were updated like expected. The error is ```auto elastic-agent upgrade 8.13.1 Error: Failed trigger upgrade of daemon: failed verification of agent binary: 2 errors occurred: * could not get .asc file: fetching asc file from '/opt/Elastic/Agent/data/elastic-agent-de80b0/downloads/elastic-agent-8.13.1-linux-x86_64.tar.gz.asc': open /opt/Elastic/Agent/data/elastic-agent-de80b0/downloads/elastic-agent-8.13.1-linux-x86_64.tar.gz.asc: no such file or directory * fetching asc file from https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-8.13.1-linux-x86_64.tar.gz.asc: failed loading public key: Get "https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-8.13.1-linux-x86_64.tar.gz.asc": context deadline exceeded ``` I can download both files directly with wget so guess this is not a download problem. In the debug log i can see hints about PGP / certificate issues? ```auto [elastic_agent][warn] Skipped remote PGP located at "https://artifacts.elastic.co/GPG-KEY-elastic-agent" because it's unavailable: 2 errors occurred: * Get "https://artifacts.elastic.co/GPG-KEY-elastic-agent": context deadline exceeded * Remote PGP download failed 15:55:46.555 elastic_agent [elastic_agent][info] Using 1 PGP keys 15:55:46.555 elastic_agent [elastic_agent][warn] Verifier failed! ``` i also tested wget [https://artifacts.elastic.co/GPG-KEY-elastic-agent](https://artifacts.elastic.co/GPG-KEY-elastic-agent) worked without a problem also if i launch by hand... any help with this issue? ---
**Author:** ![GKre](https://avatars.discourse-cdn.com/v4/letter/g/ecae2f/32.png) [@GKre](https://discuss.elastic.co/u/GKre)\ **Post date:** [June 7, 2024, 12:50pm UTC](https://discuss.elastic.co/t/upgrade-issue-on-linux-like-os-kali-proxmox/359074/2 "2024-06-07T12:50:40Z")
I wonder why this triggered no reactions. Just updated to agent 8.14.0 or "wanted to update" my fleet server first. Still the same issues: ```auto 14:34:09.506 elastic_agent [elastic_agent][error] failed to get start time for scheduled upgrade action [id = 4bd7453e-3cc2-4513-9197-d1f13040e1c1] 14:34:09.579 elastic_agent [elastic_agent][warn] Skipping addition to action-queue, issue gathering start time from action id 4bd7453e-3cc2-4513-9197-d1f13040e1c1: action has no start time 14:34:09.680 elastic_agent [elastic_agent][info] starting upgrade to version 8.14.0 in background 14:34:09.762 elastic_agent [elastic_agent][info] updated upgrade details 14:34:09.763 elastic_agent [elastic_agent][info] Upgrading agent 14:34:09.797 elastic_agent [elastic_agent][info] Cleaning up non-matching downloaded versions 14:34:09.798 elastic_agent [elastic_agent][info] updated upgrade details 14:34:09.813 elastic_agent [elastic_agent][info] Downloading upgrade artifact 14:34:09.844 elastic_agent [elastic_agent][info] updated upgrade details 14:34:09.860 elastic_agent [elastic_agent][info] download attempt 1 14:36:25.850 elastic_agent [elastic_agent][info] updated upgrade details 14:42:25.850 elastic_agent [elastic_agent][info] download progress from https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-8.14.0-linux-x86_64.tar.gz is 330.7MB/338.2MB (97.77% complete) @ 918.7kBps 14:42:25.876 elastic_agent [elastic_agent][info] updated upgrade details 14:42:30.398 elastic_agent [elastic_agent][info] download from https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-8.14.0-linux-x86_64.tar.gz completed in 6 minutes @ 929.2kBps 14:42:30.399 elastic_agent [elastic_agent][info] updated upgrade details 14:42:30.813 elastic_agent [elastic_agent][info] updated upgrade details 14:42:30.813 elastic_agent [elastic_agent][info] download from https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-8.14.0-linux-x86_64.tar.gz.sha512 completed in Less than a second @ +InfYBps 14:42:30.813 elastic_agent [elastic_agent][info] updated upgrade details 14:42:30.814 elastic_agent [elastic_agent][info] updated upgrade details 14:42:30.814 elastic_agent [elastic_agent][info] updated upgrade details 14:42:36.509 elastic_agent [elastic_agent][info] Default PGP appended 14:43:06.547 elastic_agent [elastic_agent][warn] Skipped remote PGP located at "https://artifacts.elastic.co/GPG-KEY-elastic-agent" because it's unavailable: 2 errors occurred: * Get "https://artifacts.elastic.co/GPG-KEY-elastic-agent": context deadline exceeded * Remote PGP download failed 14:43:06.739 elastic_agent [elastic_agent][warn] Skipped remote PGP located at "https://localhost:8221/api/agents/upgrades/8.14.0/pgp-public-key" because it's unavailable: 2 errors occurred: * Get "https://localhost:8221/api/agents/upgrades/8.14.0/pgp-public-key": x509: certificate signed by unknown authority * Remote PGP download failed 14:43:06.739 elastic_agent [elastic_agent][info] Using 1 PGP keys 14:43:06.760 elastic_agent [elastic_agent][warn] Verifier failed! 14:43:41.523 elastic_agent [elastic_agent][warn] Verifier failed! 14:43:41.543 elastic_agent [elastic_agent][info] Cleaning up non-matching downloaded versions 14:43:41.916 elastic_agent [elastic_agent][info] updated upgrade details 14:43:41.917 elastic_agent [elastic_agent][error] upgrade to version 8.14.0 failed: failed verification of agent binary: 2 errors occurred: * could not get .asc file: fetching asc file from '/opt/Elastic/Agent/data/elastic-agent-8.13.4-a2e31a/downloads/elastic-agent-8.14.0-linux-x86_64.tar.gz.asc': open /opt/Elastic/Agent/data/elastic-agent-8.13.4-a2e31a/downloads/elastic-agent-8.14.0-linux-x86_64.tar.gz.asc: no such file or directory * fetching asc file from https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-8.14.0-linux-x86_64.tar.gz.asc: failed loading public key: Get "https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-8.14.0-linux-x86_64.tar.gz.asc": context deadline exceeded ``` ---
**Author:** ![GKre](https://avatars.discourse-cdn.com/v4/letter/g/ecae2f/32.png) [@GKre](https://discuss.elastic.co/u/GKre)\ **Post date:** [June 13, 2024, 6:01am UTC](https://discuss.elastic.co/t/upgrade-issue-on-linux-like-os-kali-proxmox/359074/3 "2024-06-13T06:01:22Z")
so here's the latest info. I found a way to avoid this problem by login in to the linux vm, starting the upgrade with fleet and **using wget to download the missing ".asc" file**. This is working fine and now the update is running. Sill no idea what causes the problem but maybe others with the same issue might think the solution helpfull.