From b1a77a30b9fd502eaeca2f2ea3374a636c8adb55 Mon Sep 17 00:00:00 2001
From: Hari Sekhon <harisekhon@gmail.com>
Date: Mon, 26 Aug 2024 14:58:45 +0200
Subject: [PATCH] added ssh_dump_logs.sh

---
 bin/ssh_dump_logs.sh | 80 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100755 bin/ssh_dump_logs.sh

diff --git a/bin/ssh_dump_logs.sh b/bin/ssh_dump_logs.sh
new file mode 100755
index 00000000..494af798
--- /dev/null
+++ b/bin/ssh_dump_logs.sh
@@ -0,0 +1,80 @@
+#!/usr/bin/env bash
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2024-08-26 14:38:31 +0200 (Mon, 26 Aug 2024)
+#
+#  https///github.com/HariSekhon/DevOps-Bash-tools
+#
+#  License: see accompanying Hari Sekhon LICENSE file
+#
+#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
+#
+#  https://www.linkedin.com/in/HariSekhon
+#
+
+set -euo pipefail
+[ -n "${DEBUG:-}" ] && set -x
+srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# shellcheck disable=SC1090,SC1091
+. "$srcdir/lib/utils.sh"
+
+# shellcheck disable=SC1090,SC1091
+. "$srcdir/lib/kubernetes.sh"
+
+# shellcheck disable=SC2034,SC2154
+usage_description="
+Uses SSH to dump logs to local text files for servers given as arguments for uploading to vendor support cases
+
+Collects:
+
+/var/log/messages
+/var/log/dmesg
+
+
+Dumps logs to files of this name format:
+
+log.YYYY-MM-DD-HHSS.<server>.<log>.txt
+
+
+For each server that is not prefixed by root@, uses sudo in ssh to copy the log file to the user's home directory first
+to work around root file permissions issues and chown it to the login user
+
+
+Requires SSH client to be installed and configured to preferably passwordless ssh key access
+"
+
+# used by usage() in lib/utils.sh
+# shellcheck disable=SC2034
+usage_args="<server1> [<server2> <server3>]"
+
+help_usage "$@"
+
+min_args 1 "$@"
+
+for server in "$@"; do
+    echo
+    tstamp="$(date '+%F_%H%M')"
+    #for log in messages secure dmesg; do
+    for log in messages dmesg; do
+        log_file="log.$tstamp.$server.$log.txt"
+        # ignore && && || it works
+        # shellcheck disable=SC2015
+        timestamp "Dumping server $log log: $server" &&
+        if ! [[ "$server" =~ ^root@ ]]; then
+            # want client side expansion
+            # shellcheck disable=SC2029
+            ssh "$server" "sudo cp -v /var/log/$log ~/$log_file && sudo chown -v \$USER ~/$log_file" &&
+            scp "$server":"./$log_file" .
+        else
+            scp "$server":"/var/log/$log" "$log_file"
+        fi &&
+        timestamp "Dumped server $log log to file: $log_file" ||
+        warn "Failed to get $log log for server '$server'"
+        # XXX: because race condition - spot instances can go away during execution
+        # and we still want to collect the rest of the servers
+    done
+done
+echo
+timestamp "Log dumps completed"